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Detailed Description of J/ApJS/133/1 :
GIS catalog project : source catalog (Ueda+, 2001)

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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.
J/ApJS/133/1        GIS catalog project : source catalog     (Ueda+, 2001)
================================================================================
The ASCA Medium Sensitivity Survey (the GIS catalog project): source catalog.
    Ueda Y., Ishisaki Y., Takahashi T., Makishima K., Ohashi T.
   <Astrophys. J. Suppl. Ser. 133, 1 (2001)>
   =2001ApJS..133....1U
================================================================================
ADC_Keywords: Galaxy catalogs ; X-ray sources ;

Mission_Name: ASCA

Keywords: catalogs - diffuse radiation - galaxies: active - X-rays: galaxies -
          X-rays: general

Abstract:
    We present the first X-ray source catalog of the ASCA Medium
    Sensitivity Survey (AMSS, or the GIS catalog project), constructed
    from data at Galactic latitudes |b|>10° observed between 1993 May
    and 1996 December. The catalog utilizes 368 combined fields and
    contains 1343 sources with the detection significance above 5{sigma}
    either in the survey bands of 0.7-7keV, 2-10keV, or 0.7-2keV,
    including target sources. For each source, the ASCA source name,
    position, a 90% error radius, count rates in the three bands,
    detection significances, fluxes, and a hardness ratio are provided.
    With extensive simulations, we carefully evaluate the data quality of
    the catalog. Results from cross-correlation with other existing
    catalogs are briefly summarized.

File Summary:

FileName Lrecl Records Explanations
× 80 . This file × ReadMe 80 . This file × table1.dat 104 505 The field list of the AMSS × table2.dat 130 1343 The source list of the AMSS
See also: J/ApJ/518/656 : ASCA Large Sky Survey (Ueda+, 1999) J/ApJS/161/185 : GIS catalog project : source catalog II (Ueda+, 2005) Byte-by-byte Description of file: table1.dat
Bytes Format Units Label Explanations
1- 3 I3 --- Field Field identification 5 A1 --- f_Field [a] Indicates not used in Section 4 statistical analysis 7- 10 F4.1 10+20/cm2 NH Galactic hydrogen column density (1) 12- 19 I8 --- Seq Sequence Number 21- 38 A18 --- Target Target name 40- 46 F7.3 deg RAdeg Average right ascension pointing (J2000) 48- 54 F7.3 deg DEdeg Average declination pointing (J2000) 56- 58 I3 deg Roll Roll angle (2) 60- 69 A10 "YYYY/MM/DD" Obs1.Date Date observation began 71- 72 I2 h Obs1.h Hour observation began 74- 75 I2 min Obs1.m Minute observation began 77- 86 A10 "YYYY/MM/DD" Obs2.Date Date observation ended 88- 89 I2 h Obs2.h Hour observation ended 91- 92 I2 min Obs2.m Minute observation ended 94- 98 F5.1 ks Exp Exposure time 100-103 F4.2 ct/s CR Mean count rate of GIS2 and GIS3 including the background
Note (1): Estimated from the HI map by Dickey & Lockman (1990ARA&A..28..215D). Note (2): Defined as that of detector-y axis measured in clockwise direction from the north.
Byte-by-byte Description of file: table2.dat
Bytes Format Units Label Explanations
1- 4 A4 --- --- [1AXG] 6- 17 A12 --- 1AXG Source name (JHHMMSS+DDMM) 19- 26 F8.4 deg RAdeg Right ascension (J2000) 28- 35 F8.4 deg DEdeg Declination (J2000) 37- 40 F4.2 arcmin PosErr The 90% error radius (1) 42- 46 F5.1 ct/ks SigF The 0.7-7 keV {sigma} detection significance 48- 52 F5.1 ct/ks SigH The 2-10 keV {sigma} detection significance 54- 58 F5.1 ct/ks SigS The 0.7-2 keV {sigma} detection significance 60- 64 F5.1 ct/ks CRF The 0.7-7 keV count rate (2) 66- 70 F5.1 ct/ks CRH The 2-10 keV count rate (2) 72- 76 F5.1 ct/ks CRS The 0.7-2 keV count rate (2) 78- 82 F5.1 ct/ks CRFc The corrected 0.7-7 keV count rate (3) 84- 88 F5.1 ct/ks CRHc The corrected 2-10 keV count rate (3) 90- 94 F5.1 ct/ks CRSc The corrected 0.7-2 keV count rate (3) 96-100 F5.1 10-16W/m2 FluxF The 0.7-7keV flux in 10-13erg/s/cm2 (4) 102-106 F5.1 10-16W/m2 FluxH The 2-10keV flux in 10-13erg/s/cm2 (4) 108-112 F5.1 10-16W/m2 FluxS The 0.7-2keV flux in 10-13erg/s/cm2 (4) 114-118 F5.2 --- HR Hardness ratio (5) 120-123 F4.2 --- e_HR Uncertainty in HR 125-127 I3 --- Field Field identification 129 A1 --- f_Field Indicates the target source
Note (1): Including both the statistical and systematic errors. See text (section 3.3) for details. Note (2): Vignetting-corrected count rate at the reference position in the XRT coordinate (8.5' offset) integrated within a radius of 5.9'. Not corrected for Galactic absorption. Note (3): Corrected for Galactic absorption, estimated from Dickey & Lockman (1990ARA&A..28..215D) Note (4): Corrected for Galactic absorption. Converted from the observed count rate in the same band, by assuming a power law with Galactic absorption, with the best-fit photon index derived from the observed hardness ratio Ratio (see section 2.4). Note (5): Ratio = (H-S)/(H+S), where H and S represent the count rate corrected for Galactic absorption in the 2-10keV and 0.7-2keV bands, respectively.
History: From electronic version of the journal * 14-Oct-2001: table1.dat, record #376: target name RD_J13434 corrected into RX_J13434+0001 ================================================================================ (End) Greg Schwarz [AAS], Patricia Bauer [CDS] 24-Apr-2001