ACDS V10.0 - Fri Sep 01 08:35:48 CEST 2023
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Detailed Description of VII/290 : The Million Quasars (Milliquas) catalogue, version 7.2 (Flesch, 2021)
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Note : this is the description file of the original catalog.
This HTML page corresponds well to the original description, but some minor
changes in the format may have been introduced in the FITS output
files in order to allow for arithmetic operations on quantities
such as coordinates and times. h:m:s and d:m:s units are normally
converted into degrees, and YYYY-MM-DD into julian days.
Similarly, some slight changes may have been introduced in the
units; the value given in the HTML files supersedes the value indicated in the ReadMe
file for this catalogue.
VII/290 The Million Quasars (Milliquas) catalogue, version 7.2 (Flesch, 2021)
================================================================================
The Million Quasars (MILLIQUAS) catalogue, version 7.2.
Flesch E.W.
<Pub. Astron. Soc. Australia 32, 10 (2015)>
=2015PASA...32...10F
=2021yCat.7290....0F
================================================================================
ADC_Keywords: QSOs ; Active gal. nuclei ; Redshifts ; Magnitudes
Keywords: catalogs - quasars: general
Description:
This is a compendium of 829666 type-I QSOs and AGN, largely complete
from the literature to 30 April 2021 including SDSS-DR16 quasars and
VLASS radio. Also included are 703348 candidates which are calculated
as 60%-100% likely to be quasars, including 225051 which are
radio/X-ray associated. Type-II and Bl Lac objects are also included,
bringing the total count to 1573824. Gaia-DR2 astrometry is used
where available, amounting to ~66% of all objects.
Changes from version 7.1 are:
(1) Quasars added from publications to 30 April 2021.
(2) The VLASS Quick Look radio catalog is included, which adds 34189
new radio core associations and 6793 probable double radio lobe
associations.
(3) Ongoing audits of SDSS & LAMOST quasars have led to a few
additions & drops. Some WISEA-supported SDSS/LAMOST pipeline
quasars are now accepted which were otherwise marginal. Also
some likely galaxies removed.
Low-confidence/quality or questionable objects (so deemed by their
researchers) are not included in Milliquas. Additional quality cuts
can apply as detailed in the HMQ paper (Flesch, 2015PASA...32...10F).
Full QSO/AGN classification is via spectral lines, thus hidden /
occluded objects may be absent from Milliquas. Two NIQs offset
<2-arcsecs can be reported as a single object if within the same host.
The aim here is to present one unique reliable object per each data
row.
The catalog format is simple, each object is shown as one line bearing
the J2000 coordinates, its original name, object class, red and blue
optical magnitudes, PSF class, redshift, the citations for the name
and redshift, plus up to four radio/X-ray identifiers where
applicable.
Please cite as Milliquas v7.2, Flesch, E.W. 2021, arXiv:2105.12985 or
as Milliquas v7.2 (2021) update, Flesch, E.W. 2015PASA...32...10F.
Questions/comments/praise/complaints may be directed to me at
eric(at)flesch.org.
File Summary:
FileName Lrecl Records Explanations
× 80 . This file
× ReadMe 80 . This file
× catalog.dat 192 1573824 The catalogue (v7.2), 30-April-2021
× refs.dat 162 2171 References (for numerical references)
See also:
VII/273 : The Half Million Quasars (HMQ) catalogue (Flesch, 2015)
VII/277 : The Million Quasars (Milliquas) catalogue (V4.8) (Flesch, 2016)
VII/280 : The Million Quasars (Milliquas) catalogue (V5.2) (Flesch, 2017)
VII/283 : The Million Quasars (Milliquas) catalogue (V6.3) (Flesch, 2019)
Byte-by-byte Description of file: catalog.dat
Bytes Format Units Label Explanations
1- 11 F11.7 deg RAdeg Right ascension J2000 (degrees) (1)
13- 23 F11.7 deg DEdeg Declination J2000 (degrees) (1)
26- 50 A25 --- Name ID from the literature, or J2000 (2)
52- 55 A4 --- Type Classification of object, and associations (3)
57- 61 F5.2 mag Rmag ?=0 Red optical magnitude (4)
63- 67 F5.2 mag Bmag ?=0 Blue optical magnitude (4)
69- 71 A3 --- Comment Comment on optical object (5)
73 A1 --- R Red Optical PSF class (6)
75 A1 --- B Blue Optical PSF class (6)
77- 82 F6.3 --- z ? Redshift from the literature or estimated (7)
84- 89 A6 --- rName Citation for name (8)
91- 96 A6 --- rz Citation for redshift (8)
98-100 I3 pct Qpct ? Probability that this object is a QSO (9)
102-123 A22 --- XName X-ray ID, if any (10)
125-146 A22 --- RName Radio ID, if any (10)
148-169 A22 --- Lobe1 Radio lobe ID or extra R/X ID, if any (10)
171-192 A22 --- Lobe2 Radio lobe ID or extra R/X ID, if any (10)
Note (1): These are to 7 decimals which suits Gaia-DR2 astrometry.
Note (2): Nameless radio/X-ray associated objects here show the J2000 position
in HHMMSS.SS+DDMMSS.S for the convenience of the user. If needing a name
for it, just preface the J2000 with "MQ", e.g., MQ J000001.89+443053.8 .
Note (3): Legend of type/class:
Q = QSO, type-I broad-line core-dominated, 790776 of these.
A = AGN, type-I Seyferts/host-dominated, 38890 of these.
B = BL Lac object, 2704 of these.
L = lensed quasar extra image, only 64 of these in this optical data.
K = NLQSO, type-II narrow-line core-dominated, 5316 of these.
N = NLAGN, type-II Seyferts/host-dominated, 32726 of these. Includes an
unquantified residue of legacy NELGs/ELGs/LINERs.
q = quasar candidate of the displayed QSO likelihood, 559424 of these.
R = radio association displayed.
X = X-ray association displayed.
2 = double radio lobes displayed (declared by data-driven algorithm).
Note (4): Optical data is mostly from the ASP optical catalog
(Flesch, 2017PASA...34...25F) which presents data from the APM
(http://www.ast.cam.ac.uk/~mike/apmcat), USNO-A & USNO-B
(http://www.nofs.navy.mil), and the SDSS (http://sdss.org).
APM/USNO-A magnitudes were recalibrated as documented in
2004A&A...427..387F, so such USNO-A magnitudes are often used in
preference to USNO-B. APM/USNO-B galaxies < mag 17 are usually shown
too bright due to PSF modelling. Integer magnitudes (e.g., 22.00) are
estimates if both bands are integer or one band empty. Note: many SDSS
magnitudes are "extinction-corrected" ~0.3 mag brighter than observed.
Note (5): Legend as follows:
p = optical magnitudes are POSS-I O (violet 4050A) and E (red 6400A).
These are preferred because O is well-offset from E, and those plates
were always taken on the same night, thus the red-blue color is
correct even for variable objects. Epoch is 1950's.
j = optical magnitudes are SERC J (Bj 4850A) and R (red 6400A) from the
POSS-II or UKST surveys. Red-blue color is less reliable because the
red & blue plates were taken in different epochs, i.e., years apart.
b = blue magnitude is Vega 4400A (Johnson), red is 6400A (Cousins).
g = blue magnitude is SDSS-type green 4900A, red is r 6200A.
u = blue magnitude is SDSS ultraviolet 3850A.
v = red magnitude is visual., i.e., white, 5500A midpoint.
i = red magnitude is infrared 7500A.
z = red magnitude is infrared z 8600A.
r = red magnitude is r 6200A.
(blank) = Pan-STARRS r 6200A & g 4900A, but red alone is 6400A (Cousins).
G = Gaia-DR2 astrometry shown, precessed to J2000 by CDS. If 'G' is alone
then the magnitudes are Gaia RP & BP, or Gaia G if red band only.
+ = variability nominally detected in both red/blue over multi-epoch data.
m = proper motion nominally detected, from USNO-B.
% = swap of two "unplugged" SDSS spectra which crossed wires (7 of these).
a = object is host-dominated with faint nuclear activity, such as an SDSS
pipeline galaxy with an AGN subclass or AGN-classed elsewhere, see its
citation. Milliquas class is 'A' if BROADLINE, else 'N'. (see note 2)
Note (6): The APM, USNO-B, and SDSS provide PSF class, albeit using different
criteria. These are shown here as:
- = point source / stellar PSF (APM notation: -1, here truncated)
1 = fuzzy / galaxy shape (APM notation: 1 and some 2)
n = no PSF available, whether borderline or too faint to tell, etc.
x = not seen in this band (fainter than plate depth, or confused, etc.)
Note (7): Spectroscopic/grism redshifts are required for objects classified as
Q/A/K/N/L and is optional for B (BL Lac type). Photometric redshifts
rounded to 0.1z can be displayed for B/R/X/2 objects, and are either taken
from the cited catalogue or calculated here using the four-colour method of
Flesch 2015PASA...32...10F, Appendix 2, using 4 colours from SDSS ugriz,
Pan-STARRS grizy, or, for WISEA, the 4 colours B-R, R-W1, W1-W2, and W2-W3.
Note (8): Legend (with counts of name and redshift) and references:
(for numerical reference code, see refs.dat file):
2dF (357,211) : 2dF galaxy survey, Colless M. et al.,
2001MNRAS.328.1039C, Cat. VII/250
2QZ (27520,24157) : Croom S.M. et al., 2004MNRAS.349.1397C, Cat. VII/241
2SLAQ (10353,8679) : Croom S.M. et al., 2009, Cat. J/MNRAS/392/19
3FGL (16,11) : Fermi cleanups, Paiano S. et al., 2017ApJ...851..135P
3FGL2 (21,19) : Fermi cleanups II, Paiano S. et al.,
2019ApJ...871..162P
3HSP (819,999) : 3HSP blazars, Chang Y.-L. et al.,
2019A&A...632A..77C, Cat. J/A+A/632/A77
3XLSS (25,25) : The XXL Survey, Pierre M. et al.,
2016A&A...592A...1P, Cat, IX/49
4FGL1 (15,3) : Fermi cleanups, de Menezes R. et al.,
2019A&A...630A..55D
4FGL2 (18,22) : Fermi cleanups X, de Menezes R. et al.,
2020Ap&SS.365..12D
4LAC (367,349) : Fermi AGN v4 + LL, Fermi-LAT collab.,
2020ApJ...892..105A
6dF (315,223) : 6dF galaxy survey, Jones D.H. et al.,
2009MNRAS.399..683J, Cat. VII/259
AAOz (1491,1498) : AAOmega XXL-South: Lidman C. et al.,
2016PASA...33....1L
AGES (2046,2046) : AGES survey, Kochanek C.S. et al.,
2012, Cat. J/ApJS/200/8
AGNELL (2,3) : DES lenses, Agnello A. et al., 2015MNRAS.454.1260A
AGNELA (4,4) : SDSS J1433+6007 4-lens, Agnello A. et al.,
2018MNRAS.474.3391A
AGNEL2 (13,13) : VST-Gaia QSO pairs, Agnello A. et al.,
2018MNRAS.475.2086A
AKARI (1,1) : overlooked luminous quasar, Aoki K. et al.,
2011PASJ...63S.457A
ALMA (4,4) : ALMA hi-z, Roberto Decarli R. et al.,
2018ApJ...854...97D
ANDIKA (2,2) : Hi-z starbursts: Andika I.T. et al.,
2020ApJ...903...34A
ANGUIT (1,1) : COSMOS lens, Anguita T. et al., 2009A&A...507...35A
ATel (5,5) : Astronomers Telegraph posts,
http://www.astronomerstelegram.org
ATHENS (86,108) : VIPERS AGN SEDs, Pouliasis E. et al.,
2020MNRAS.495.1853P, Cat. J/MNRAS/495/1853
ATLAS (229,269) : Mao M.Y. et al., 2012, Cat. J/MNRAS/426/3334
BAHM (24,24) : dust-reddened QSOs, Banerji M. et al.,
2015MNRAS.447.3368B
BASS (16,113) : Swift-BAT AGN, Koss M. et al., 2017, Cat. J/ApJ/850/74
BERGHE (1,1) : Pan-STARRS lens, Berghea C.T. et al.,
2017ApJ...844...90B
BGGFC (4,4) : COSMOS hi-z, Boutsia K. et al., 2018ApJ...869...20B
BLAZZ (0,8) : Blazar redshifts, Goldini P. et al.,
2020,arXiv:2012.05176
BMCGCS (1,1) : Belladitta S. et al., 2019A&A...629A..68B
BMCS (1,1) : Blazar at z>6, Belladitta S. et al.,
2020A&A...635L...7B
BQLS (16,16) : BOSS QSO lenses & pairs, More A. et al.,
2016MNRAS.456.1595M
BZCAT (4,3) : Blazars catalog, Massaro E. et al.,
http://www.asdc.asi.it/bzcat
C-COSM (180,180) : Chandra COSMOS IDs, Marchesi S. et al.,
2016ApJ...817...34M
ChaMP (191,187) : Trichas M. et al., 2012ApJS..200...17T
DABAST (1,1) : Diaz-Santos T. et al., 2018Sci...362.1034D
Dart (26,25) : Heavily Obscured QSOs, Hviding R. et al.,
2018MNRAS.474.1955H
DDC2 (14,14) : variable AGN, De Cicco D. et al., 2019,
Cat. J/A+A/627/A33
DEEP (143,139) : DEEP2, Newman J. et al., 2013ApJS..208....5N;
deep.ps.uci.edu/DR4
DES (1,1) : Dark Energy hi-z, Reed S.L. et al.,
2015MNRAS.454.3952R
DESQQ (26,26) : STRIDES lenses, Anguita T. et al., 2018MNRAS.480.5017A
DESQQ2 (12,12) : STRIDES lenses, Treu T. et al., 2018MNRAS.481.1041T
DPeake (683,656) : Double-peaked NELGs, Ge J.-Q. et al., 2012,
Cat. J/ApJS/201/31
DR12 (6,6) : Alam S. et al., 2015ApJS..219...12A,
https://sdss.org/dr12
DR12Q (244,15) : SDSS-DR12Q, Paris I. et al., 2017A&A...597A..79P,
Cat. VII/279
DR14 (12,44) : Abolfathi B. et al., 2018ApJS..235...42A, pipeline,
data at
https://data.sdss.org/sas/dr14/sdss/spectro/redux
DR14Q (1527,1538) : SDSS-DR14Q, Paris I. et al., 2018A&A...613A..51P
data at
https://data.sdss.org/sas/dr14/eboss/qso/DR14Q
DR16 (41065,374519) : Ahumada R. et al., 2020ApJS..249....3A, pipeline,
data at
https://data.sdss.org/sas/dr16/sdss/spectro/redux
DR16Q (715827,395233) : SDSS-DR16Q, Lyke B. et al., 2020ApJS..250....8L
2 files, data at
https://data.sdss.org/sas/dr16/eboss/qso/DR16Q
DR16QN (0,2132) : same as above, using the QuasarNET redshift supplied.
DR7 (2,26) : SDSS DR7, Abazajian K.N. et al., 2009ApJS..182..543A
files at
http://classic.sdss.org/dr7/products/spectra/getspectra.html
DR7Q (1967,200) : SDSS Quasar DR7, Schneider D. et al.,
2010AJ....139.2360S, Cat. VII/26 data
http://classic.sdss.org/dr7/products/value_added/qsocat_dr7.html
DUALQ (1,1) : Dual QSOs HSC, Silverman J.D. et al.,
2020ApJ...899..154S
DUHIZ (2,2) : DECaLS-UKIRT hi-z, Wang F. et al.,
2017ApJ...839...27W
Dusty (11,11) : Dusty Starbursts, Rodighiero G. et al.,
2019ApJ...877...38H
DUz6 (18,18) : DESI & UKIRT hi-z, Wang F. et al., 2019ApJ...884...30W
eHAQ (82,80) : Extended High AV, Krogager J.-K., 2016ApJ...832...49K
ELQ-PS (216,215) : ELQS on PS1, Schindler J.-T. et al.,
2019, Cat. J/ApJS/243/5
ELQS-N (38,38) : ELQS in NGC, Schindler J.-T. et al.,
2018ApJ...863..144S
ELQS-S (126,126) : ELQS in SGC, Schindler J.-T. et al.,
2019ApJ...871..258S
FISCBA (1,1) : HST lens, Fischer/Schade/Barrientos,
1998ApJ...503L.127F
FLES40 (40,0) : Salvaged QSOs, Flesch E.W., 2021MNRAS.504..621F
FYNBO (1,1) : LiBAL QSO, Fynbo J.P.U. et al., 2020A&A...634A..11D
GAIA1 (21,21) : Gaia DR1, Gaia Collaboration et al.,
2016A&A...595A...1G, Cat. I/337
GAIA2 (236,232) : Gaia DR2, Gaia Collaboration et al.,
2018A&A...616A...1G, Cat. I/345 (GAIA data as
presented by SIMBAD,
http://simbad.u-strasbg.fr/simbad)
GEIER (1,1) : Geier S.J. et al., 2019A&A...625L...9G
GGLS (3,4) : Gaia GraL, Krone-Martins A. et al.,
2019, arXiv:1912.08977
GLDD (1,1) : Lensed QSO data-driven, Ostrovski F. et al.,
2017MNRAS.465.4325O
GLIKMA (28,28) : red WISE QSOs, Glikman E. et al.,
2018, Cat. J/ApJ/861/37
GLOH (1,1) : Grav Lensed Objs HSC, Jaelani A.T. et al.,
2020,arXiv:2006.16584
GLRED (1,1) : lensed red QSO, Glikman E. et al.,
2018,arXiv:1807.05434
GQ (2,2) : serendipitous binary, Altamura E. et al.,
2020AJ....159..122A
GRAL4 (10,10) : Gaia Grav Lens quads, Stern D. et al.,
2020,arXiv:2012.10051
GUTI (1,1) : not a ULX, Gutierrez C.M., 2013A&A...549A..81G
GZPM (23,23) : Gaia zero pm, Heintz K.E. et al.,
2020, Cat. J/A+A/644/A17
H-DOGs (16,16) : Herschel DOGs, Riguccini L.A. et al.,
2019A&A...625A...9D
HAQ (2,2) : High AV serendipitous, Heintz K.E. et al.,
2016AJ....152...13H
HAQC (1,1) : High AV in COSMOS, Heintz K.E. et al.,
2016A&A...595A..13H
HE2QS (103,103) : HeII quasar survey, Schmidt T.M. et al.,
2017, Cat. J/ApJ/847/81
HE2QS2 (5,5) : HeII HST/COS quasars, Worseck G. et al.,
2019ApJ...875..111W
HEINTZ (1,1) : dusty absorbed QSO, Heintz K.E. et al.,
2018A&A...615A..43H
HIZ7.5 (1,1) : QSO z=7.5, Banados E. et al., 2018Natur.553..473B
HSC (3,3) : Low-luminosity QSOs, Niida M. et al.,
2020ApJ...904...89N
HSTvar (42,42) : variable AGN, Pouliasis E. et al.,
2019, Cat. J/MNRAS/487/4285
ICECUB (9,12) : IceCube spectra, Paiano S. et al.,
2021,arXiv:2104.05290
IGMCP (10,10) : IGM close pairs, Rorai A. et al., 2017Sci...356..418R
IKEDA (1,1) : Ikeda H. et al., 2017ApJ...846...57I
IMDS (3,3) : IR medium-deep hi-z VII, Shin S. et al.,
2020ApJ...893...45S
IMS (1,1) : IR medium-deep hi-z, Kim Y. et al.,
2015ApJ...813...35H
IMS2 (10,11) : IR medium-deep hi-z, Kim Y. et al.,
2019ApJ...870...86K
INAF (1,1) : UV bright hi-z, Grazian A. et al., 2020ApJ...897...94G
JERAM (1,1) : extremely bright, Jeram S. et al., 2020ApJ...899...76J
JPLUS (24,24) : luminous Ly, Spinoso D. et al.,
2020, Cat. J/A+A/643/A149
K4K (2,2) : K4000 bz, Uwitonze/Nkundabakura/Mutabazi,
2020, arXiv:2004.03154
KHOR1 (7,6) : 3XMM hi-z, Khorunzhev G.A. et al., 2017,AstL,43,135
KHOR2 (11,11) : 3XMM hi-z, Khorunzhev G.A. et al., 2019AstL...45..411K
KHOR3 (1,1) : X-ray luminous, Khorunzhev G.A. et al.,
2021, arXiv:2104.05142
KODQ3 (4,4) : KODIAQ DR3, O'Meara J.M. et al., 2020,arXiv:2010.09061
KOVACS (1,1) : bright QSO behind Milky Way, Kovacs T. et al.,
2019, RNAAS, 3, 3
LAMDR6 (2966,3341) : LAMOST-DR6, pipeline, http://dr6.lamost.org
LAMQ1 (684,625) : LAMOST QUASAR DR1, Ai Y.L. et al.,
2016, Cat. J/AJ/151/24
LAMQ3 (6698,6587) : LAMOST QUASAR DR3/DR2, Dong X.Y. et al.,
2018, Cat. J/AJ/155/189
LAMQ5 (7938,7937) : LAMOST QUASAR DR5/DR4, Yao S. et al.,
2019ApJS..240....6Y
LEMON (40,40) : 24 Gaia lenses, Lemon C. et al., 2018MNRAS.479.5060L
LEMON2 (30,30) : 22 Gaia lenses, Lemon/Auger/McMahon,
2019MNRAS.483.4242L
LEMON3 (53,52) : STRIDES lenses etc, Lemon C. et al.,
2020MNRAS.494.3491L
LGGS (11,11) : M31/M33 area, Massey/Neugent/Levesque,
2019AJ....157..227M
LIDMAN (1,1) : SN Host Galaxy redshifts, Lidman C. et al.,
2013PASA...30....1L
LIN (1,1) : DES lens, Lin H. et al., 2017ApJ...838...15L
LIRAS (169,154) : LoCuSS IR AGNs, Xu, L. et al.,
2015, Cat. J/ApJS/219/18
LOZAGN (38,10997) : Low-redshift AGN, Liu H.-Y. et al.,
2019, Cat. J/ApJS/243/21
LSSA (2,1) : 2 lenses, Lucey/Schechter/Smith/Anguita,
2018MNRAS.476..927L
LUMIz5 (66,66) : Luminous hi-z, Yang J. et al., 2019ApJ...871..199Y
M31UV (1,1) : UV flare QSO on M31, Meusinger H. et al.,
2010A&A...512A...1M
MALS-N (69,68) : MEERKAT QSOs, Krogager J.-K. et al.,
2018ApJS..235...10K
MFJC (52,51) : McGreer I.D., Fan X., Jiang L. & Cai Z.,
2018, Cat. J/AJ/155/131
MQ (143925,539324) : MILLIQUAS, original data in this catalog, Flesch E.,
2021
NBCKDE (2559,2656) : Richards G.T. et al., 2009, Cat. J/ApJS/180/67
NBCKv3 (13224,67795) : NBCKDE v3, Richards G.T. et al.,
2015, Cat. J/ApJS/219/39
NED (5,6) : NASA/IPAC Extragalactic Database,
https://ned.ipac.caltech.edu
OGLE2 (2,2) : OGLE quasars, Kozlowski S. et al., 2019ApJ...878..115K
OVRLAP (5,5) : SDSS overlap hi-z QSOs, Jiang L. et al.,
2015AJ....149..188J
OzDES (608,435) : Dark Energy SN QSOs, Tie S.S. et al.,
2017AJ....153..107T
OzDES2 (751,921) : DESN QSOs, Lidman C. et al., 2020MNRAS.496...19L
P352-1 (1,1) : P352-15, Banados E. et al., 2018ApJ...861L..14B
PETERS (245,268) : photo special., Peters C.M. et al, 2015ApJ...811...95P
PFTS (2,11) : blazar spectroscopy, Paiano S. et al.,
2020MNRAS.497...94P
PGC (12914,8) : Principal Galaxy Catalog, Paturel G. et al.,
2003A&A...412...45P, Cat. VII/237
PHILLI (1,0) : MERLIN lens, Phillips P.M. et al., 2000MNRAS.319L...7P
PS1 (63,63) : PAN-STARRS1 hi-z, Banados E. et al.,
2016, Cat. J/ApJS/227/11
PS1hiz (1,1) : Tang, Ji-Jia et al., 2017MNRAS.466.4568T
PS1MAZ (6,6) : Mazzucchelli C. et al., 2017ApJ...849...91M
PSO (3,3) : PAN-STARRS z-dropouts, Venemans B.P. et al.,
2015ApJ...801L..11V
QLSV (21,20) : QUEST-La Silla, Sanchez-Saez P. et al.,
2019ApJS..242...10S
QPQ10 (70,70) : Quasar pair DB, Findlay J.R. et al.,
2018ApJS..236...44F
QUBRIC (91,91) : QUBRICS I, Calderone G. et al., 2019ApJ...887....2Y
QUBRIX (249,252) : QUBRICS II, Boutsia K. et al., 2020ApJS..250...26B
RBS (3,3) : Laporte N. et al., 2017ApJ...851...40L
Redden (25,25) : Reddened QSOs, Temple M.J. et al., 2019MNRAS.487.2594R
REQ4 (6,6) : Reionization-Era quasars, Yang J. et al.,
2019AJ....157..236Y
REQ7 (1,1) : Reionization-Era QSO z=7.5,Yang J. et al.,
2020ApJ...897...14C
RLQ (4,3) : Tuccillo D./Gonzalez-Serrano J.I./Benn C.R.,
2015, Cat. J/MNRAS/449/2818
RSG (1,1) : Dorn-Wallenstein T.Z. & Levesque E.,
2017, IAUS, 329, 376
S82X (71,75) : Stripe 82 AGN, LaMassa S.M. et al.,
2019ApJ...876...50L
S82XRQ (8,8) : Red Quasars, LaMassa S.M. et al., 2017ApJ...847..100L
SAGE1 (1,1) : SAGE IR AGN, Hony S. et al., 2011A&A...531A.137H
SCULPT (2,3) : Sculptor X-ray, Arnason R. M. et al.,
2019MNRAS.485.2259A
SDLENS (3,3) : SDSS Lenses, Williams P.R. et al., 2018MNRAS.477L..70W
SDSSHI (6,6) : SDSS hi-z, Jiang L. et al., 2016ApJ...833..222J
SELMAN (1,1) : serendipitous, Selman F.J. et al., 2020AN...341...26S
SFM201 (1,1) : Schulze S. et al., 2012A&A...546A..20S
SHELLQ (33,33) : Subaru hi-z, Matsuoka Y. et al., 2018PASJ...70S..35M
SHELQ3 (28,28) : Subaru hi-z, Matsuoka Y. et al., 2019ApJ...883..183M
SHELQS (30,30) : SHELLQS hi-z, Matsuoka Y. et al., 2018ApJS..237....5M
SHELz7 (1,1) : SHELLQS z=7, Matsuoka Y. et al., 2019ApJ...872L...2M
SMSSQ (2,2) : SkyMapper hi-z, Zefeng Li Z. et al.,
2018,arXiv:1805.03429
SOLARZ (13,13) : AllWISE anomalies, Solarz A. et al.,
2020A&A...642A.103S
SPIN18 (1,1) : KiDS-SQuaD lens, Spiniello C. et al.,
2018MNRAS.480.1163S
SPIN19 (2,2) : 2 lensed quasars, Spiniello C. et al.,
2019MNRAS.485.5086S
SQLS (60,51) : SDSS DR7 QSO Lens Search, Inada N. et al.,
2012, Cat. J/AJ/143/119
SQUAD (13,13) : UVES DB DR1, Murphy M.T. et al., 2019MNRAS.482.3458M
SSLENS (3,3) : South sky lenses, Spiniello C. et al.,
2019MNRAS.483.3888S
SUV (22,22) : SDSS-ULAS/VHS QSOs, Yang J. et al.,
2017AJ....153..184Y
SXDF (39,39) : Subaru-XMMDF redshifts, Simpson C. et al.,
2012, Cat. J/MNRAS/421/3060
SXDS (307,306) : Subaru-XMMDF spectra, Akiyama M. et al.,
2015PASJ...67...82A
ULTRA (1,1) : Ultraluminous hi-z, Wu, X.-B. et al.,
2015Natur.518..512W
UVQS (435,503) : UV QSOs, Monroe T.R. et al., 2016, Cat. J/AJ/152/25
VAHIZ (2,2) : VST ATLAS hi-z, Carnall A.C. et al.,
2015MNRAS.451L..16C
VAHIZ2 (1,1) : bright z>6 QSOs, Chehade B. et al.,
2018MNRAS.478.1649C
VAHIZ3 (1,1) : VST-ATLAS lens, Schechter P.L. et al.,
2018, RNAAS, 2b, 21
VAQL (11,11) : VST-ATLAS quasar systems,Schechter P.L. et al.,
2017AJ....153..219S
VDES (8,8) : VISTA Dark Energy QSOs, Reed S.L. et al.,
2017MNRAS.468.4702R
VDES2 (2,2) : more VHS-DES quasars, Reed S.L. et al.,
2019MNRAS.487.1874R
VIKING (4,4) : VIKING IR, Venemans, G.A. et al., 2015MNRAS.453.2259V
VIPERS (241,283) : VIPERS PDR-2, Scodeggio M. et al., 2018A&A...609A..84S
VMC (34,34) : Magellanic IR QSOs, Ivanov V.D. et al.,
2016A&A...588A..93I
WARSAW (3,3) : OGLE lens, Kostrzewa-Rutkowska Z. et al.,
2018MNRAS.476..663K
WERTZ (1,1) : Gaia GraL lens, Wertz O. et al., 2019A&A...628A..17W
WGD (2,2) : DES/Gaia lenses; Agnello A. et al.,
2018MNRAS.479.4345A
WILLIG (1,1) : Williger, G., 2020, p comm., data on LJMU Robotic
Telescope
WISEA (522905,0) : AllWISE QSO candidates, Secrest N. et al.,
2015, Cat. J/ApJS/221/12
WISEHI (72,70) : Hi-z QSOs from WISE, Wang F. et al.,
2016, Cat. J/ApJ/819/24
WOLF1 (1,0) : most ultraluminous QSO, Wolf C. et al.,
2018PASA...35...24W
WOLF2 (16,16) : hi-z ultraluminous QSOs, Wolf C. et al.,
2020MNRAS.491.1970W
WYFH (1,1) : z=7.642 quasar, Wang F. et al., 2021,arXiv:2101.03179
XDQSO (20119,0) : SDSS-XDQSO, Bovy J. et al., 2011ApJ...729..141B
XLSS (306,118) : Stalin C.S. et al., 2010, Cat. J/MNRAS/401/294
XMM2 (12,12) : 2XMM-Newton cross-search, Combi J.A. et al.,
2011Ap&SS.331...53C, Cat. V/138
XMMSMC (6,6) : SMC quasars, Maitral C. et al., 2019A&A...622A..29M
XMSS (182,148) : Barcons X. et al., 2007, Cat. J/A+A/476/1191
XWAS (490,449) : Esquej P. et al., 2013, Cat. J/A+A/557/A123
YQLF (25,25) : deep CFHT QSOs, Yang J. et al.,
2018, Cat. J/AJ/155/110
YSZ (0,414) : Type 2 QSOs IDd, Yuan/Strauss/Zakamska,
2016,arXiv:1606.04976
z6.51 (1,1) : lensed quasar z=6.51, Fan X. et al.,
2019ApJ...870L..11F
z6.82 (1,1) : radio-loud z=6.82, Banados E. et al.,
2021,arXiv:2103.03295
z7.02 (1,1) : lensed quasar z=7.02, Wang F. et al.,
2018ApJ...869L...9W
4-digit numeric citations are indexed in the HMQ (2015PASA...32...10F)
references list. The citation for the classification (e.g., that the
object is a quasar) is from either the name or redshift citation.
Note (9): For QSO candidates (class starting with q/R/X/2) this shows its pQSO
(percent chance that it is a QSO) based on radio/X-ray association and/or
photometric analysis. Radio/X-ray based likelihoods are calculated as
described in Flesch & Hardcastle, 2004A&A...427..387F. WISEA photometric
pQSOs are calibrated all-sky via the colours B-R, R-W1, W1-W2, and W2-W3,
using the method of Flesch 2015PASA...32...10F, Appendix 2. SDSS-based
candidates from NBCKDE/NBCKv3/XDQSO/Peters (see Note 7 for citations)
photometric catalogs can also have photometric-based pQSOs which are here
calibrated against SDSS-DR16Q classified objects using 4-colour matching.
The calibrated photometric pQSO (P1) and radio/X-ray derived pQSO (P2),
if both present, are combined into a single pQSO as
pQSO = 1/(1+((1-P1)*(1-P2))/(P1*P2)).
For a fully classified object (class starting with Q/A/B/K/N/L), this
shows the percent chance that a shown radio/X-ray detection(s) is truly
associated to it. If no radio/X-ray detection, value is blank.
Note (10): Four columns of Radio/X-ray detections are presented:
* 1st column: best X-ray detection (i.e. highest probability association).
* 2nd column: best core Radio detection.
* 3rd column: a radio lobe if the description (see note 2) shows a "2",
otherwise this is an additional radio or X-ray detection.
* 4th column: a radio lobe if the description (see note 2) shows a "2",
otherwise this is an additional radio or X-ray detection.
Legend of Radio/X-ray detection prefixes and catalog home pages:
FIRST: VLA FIRST survey, 13Jun05 version, http://sundog.stsci.edu
VL0 (abbrev of VLASS1QLCIR): VLASS Quick Look, https://cirada.ca/catalogues
NVSS: NRAO VLA sky survey, http://www.cv.nrao.edu/nvss
SUMSS: Sydney U. Molonglo, http://www.astrop.physics.usyd.edu.au/sumsscat/
MGPS: Molonglo galactic plane, www.astrop.physics.usyd.edu.au/mgpscat/
ROSAT catalogs available from http://cdsarc.u-strasbg.fr/cats/IX.htx are:
- IX/28A is 1RXH: ROSAT HRI (high resolution imager)
- IX/30 is 2RXP: ROSAT PSPC (position sensitive proportional counter)
- IX/10A & IX/29 are 1RXS: ROSAT RASS (all-sky survey, bright & faint)
2RXF: https://heasarc.gsfc.nasa.gov/W3Browse/rosat/rospspcftot.html
2RXS: 2nd RASS source catalog, http://www.mpe.mpg.de/ROSAT
1WGA: White, Giommi & Angelini, wgacat.gsfc.nasa.gov/wgacat/wgacat.html
CXOG: Chandra ACIS source catalog, Wang S. et al., 2016,ApJS,224,40
CXO: Chandra Source Catalog v1.1, http://cxc.harvard.edu/csc
2CXO: Chandra Source Catalog v2, http://cxc.harvard.edu/csc
CXOX: XAssist Chandra source list, http://xassist.pha.jhu.edu/
2XMM/2XMMi: XMM-Newton DR3, http://cdsarc.u-strasbg.fr/cats/IX.htx IX/39&40
4XMM: XMM-Newton DR10, https://www.cosmos.esa.int/web/xmm-newton/xsa
XMMSL: XMM-Newton Slew Survey Release 2.0, same attribution as 4XMM
XMMX: XAssist XMM-Newton source list, http://xassist.pha.jhu.edu/
2SXPS: Swift X-ray Point Source catalog, http://www.swift.ac.uk/2SXPS
Optical field solutions are calculated from the raw source positions of all
these catalogs (except 2CXO) as described in my MORX paper,
Flesch, 2016PASA...33...52F.
Byte-by-byte Description of file: refs.dat
Bytes Format Units Label Explanations
1- 4 I04 --- Ref Reference number
6- 11 I6 ---- N1 ? Number of this reference for Name
13- 18 I6 --- N2 ? Number of this reference for redshift
21- 39 A19 --- Bibcode BibCode
41- 71 A31 --- Aut Author's name
73-162 A90 --- Com Comments
Acknowledgements:
If using this catalogue in published research, please cite as
Milliquas v7.2, Flesch, E.W. 2021, arXiv:2105.12985 , or as
Milliquas v7.2 (2021) update, Flesch, E.W. 2015PASA...32...10F.
The confirmed quasars of this catalog (to Jan 2015) were published as
the Half Million Quasars (HMQ) catalog: Flesch E., 2015PASA...32...10F.
Note however that Milliquas uses optical sky data from ASP
(2017PASA...34...25F) whereas the HMQ used optical sky data from QORG
(2004A&A...427..387F, Cat. J/A+A/427/387) Appendix A.
This research has made use of the NASA/IPAC Extragalactic Database
(NED) which is operated by the Jet Propulsion Laboratory,California
Institute of Technology, under contract with the National Aeronautics
and Space Administration.
This research has made use of the SIMBAD database and CDS cross-match
service (to obtain Gaia DR2 data) provided by CDS, Strasbourg, France.
History:
From Eric Flesch, eric(at)flesch.org
================================================================================
(End) Patricia Vannier [CDS] 03-May-2021