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Detailed Description of J/ApJS/181/227 :
Catalog of 24um sources toward Galactic Center (Hinz+, 2009)

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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/181/227  Catalog of 24um sources toward Galactic Center  (Hinz+, 2009)
================================================================================
A catalog of 24 µm sources toward the Galactic center.
    Hinz J.L., Rieke G.H., Yusef-Zadeh F., Hewitt J., Balog Z., Block M.
   <Astrophys. J. Suppl. Ser., 181, 227-232 (2009)>
   =2009ApJS..181..227H
================================================================================
ADC_Keywords: Infrared sources

Mission_Name: Spitzer

Keywords: Galaxy: center - infrared: stars


Abstract:
    We present a ~1.5x8°2 (220x1195pc2) multiband imaging
    photometer for Spitzer 24um image of the Galactic center (GC) and an
    accompanying point-source list. This image is the highest spatial
    resolution (6"~0.25pc) and sensitivity map ever taken across the
    GC at this wavelength, showing the emission by warm dust in
    unprecedented detail. Over 120000 point sources are identified in
    this catalog with signal-to-noise ratios greater than five and flux
    densities from 0.6mJy to 9Jy.

Description:
    Starting with raw data from the Spitzer Science Center (SSC), data
    reduction was performed using version 3.02 of the MIPS (multiband imaging
    photometer for Spitzer) data analysis tool.

File Summary:

FileName Lrecl Records Explanations
× 80 . This file × ReadMe 80 . This file × table2.dat 89 120883 Point source catalog at 24microns
See also: II/295 : Spitzer IRAC survey of the galactic center (Ramirez+, 2008) II/293 : GLIMPSE Source Catalog (I + II) (IPAC 2008) VII/233 : The 2MASS Extended sources (IPAC/UMass, 2003-2006) II/246 : 2MASS All-Sky Catalog of Point Sources (Cutri+ 2003) J/A+A/499/483 : NIR observations of sources in galactic center (Buchholz+ 2009) Byte-by-byte Description of file: table2.dat
Bytes Format Units Label Explanations
1- 16 A16 --- 2MASS 2MASS identification (HHMMSSss+DDMMSSs) if any (1) 18- 27 F10.6 deg RAdeg Right Ascension in decimal degrees (J2000) 29- 38 F10.6 deg DEdeg Declination in decimal degrees (J2000) 40- 49 E10.5 arcsec e_RAdeg Calculated 1{sigma} error in RAdeg (2) 51- 60 E10.5 arcsec e_DEdeg Calculated 1{sigma} error in DEdeg (2) 62- 70 F9.7 Jy F24um MIPS 24micron band flux density 72- 81 E10.5 Jy e_F24um Calculated 1{sigma} error in F24um (2) 83- 89 F7.4 --- Corr [-1,1] Correlation to the input PSF (3)
Note (1): Positions for sources were compared and cross-correlated with the Two Micron All Sky Survey (2MASS; Cat. II/246) to test for possible distortion effects or other systematic problems. Over the entire field, we find an average systematic offset of +1.6" in right ascension and +0.5" in declination between the 2MASS and 24um sources. Note (2): These errors are the Starfinder nominal fitting errors only. More representative uncertainties are of order 7% for the flux densities and 0.6" for the positions (see the discussion in Section 4.1). Note (3): Higher numbers indicate closer matches, with 1 being perfect.
Nomenclature note: Objects = <[HRY2009] DDD.dddddd+DD.dddddd> in Simbad History: From electronic version of the journal ================================================================================ (End) Greg Schwarz [AAS], Emmanuelle Perret [CDS] 23-Oct-2009