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J/PASJ/63/S677   MAXI/GSC catalog in high Galactic-latitude sky  (Hiroi+, 2011)

The first MAXI/GSC catalog in the high Galactic-latitude sky. Hiroi K., Ueda Y., Isobe N., Hayashida M., Eguchi S., Sugizaki M., Kawai N., Tsunemi H., Matsuoka M., Mihara T., Yamaoka K., Ishikawa M., Kimura M., Kitayama H., Kohama M., Matsumura T., Morii M., Nakagawa Y.E., Nakahira S., Nakajima M., Negoro H., Serino M., Shidatsu M., Sootome T., Sugimori K., Suwa F., Toizumi T., Tomida H., Tsuboi Y., Ueno S., Usui R., Yamamoto T., Yamazaki K., Yoshida A. <Publ. Astron. Soc. Jap., 63, S677-S689 (2011)> =2011PASJ...63S.677H
ADC_Keywords: X-ray sources ; Redshifts ; Cross identifications Keywords: catalogs - galaxies: active - surveys - X-rays: galaxies Abstract: We present the first unbiased source catalog of the Monitor of All-sky X-ray Image (MAXI) mission at high Galactic latitudes (|b|>10°), produced from the first 7-month data (2009 September 1 to 2010 March 31) of the Gas Slit Camera in the 4-10keV band. We have developed an analysis procedure to detect faint sources from the MAXI data, utilizing a maximum likelihood image fitting method, where the image response, background, and detailed observational conditions are taken into account. The catalog consists of 143 X-ray sources above the 7σ significance level with a limiting sensitivity of ∼1.5x10-11erg/cm2/s (1.2mCrab) in the 4-10keV band. Among them, we have identified 38 Galactic/LMC/SMC objects, 48 galaxy clusters, 39 Seyfert galaxies, 12 blazars, and 1 galaxy. Four other sources are confused with multiple objects, and one remains unidentified. The logN-logS relation of extragalactic objects is in good agreement with the HEAO-1 A-2 result, although the list of the brightest AGNs in the entire sky has significantly changed since that produced 30yr ago. Description: For catalog production, we use the MAXI/GSC data taken between 2009 September 1 and 2010 March 31. Monitor of All-sky X-ray Image (MAXI mission, see Matsuoka et al. 2009PASJ...61..999M) is the first scientific mission operated on the international space station (ISS). It carries two types of X-ray cameras: Gas Slit Camera (GSC: Sugizaki et al. 2011PASJ...63S.635S; Mihara et al. 2011PASJ...63S.623M) and Solid-state Slit Camera (SSC: Tsunemi et al. 2010PASJ...62.1371T; Tomida et al. 2011PASJ...63..397T) covering energy bands of 2­30 keV and 0.5­ 12 keV, respectively. MAXI/GSC observes nearly the whole sky every 92 min with two instantaneous fields of view of 160x3°. File Summary:
FileName Lrecl Records Explanations
ReadMe 80 . This file table1.dat 176 148 Cataloged sources in the MAXI/GSC survey
Byte-by-byte Description of file: table1.dat
Bytes Format Units Label Explanations
1- 3 I3 --- Seq Sequential number 5- 8 A4 --- --- [MAXI] 10- 18 A9 --- MAXI MAXI name (JHHMM+DDd) 20- 24 F5.1 deg RAdeg MAXI right ascension (J2000) 26- 30 F5.1 deg DEdeg MAXI declination (J2000) 32- 37 F6.1 --- Signi Significance 39- 45 F7.1 10-14W/m2 Flux Flux in the 4-10keV band (1) 47- 49 F3.1 10-14W/m2 e_Flux rms uncertainty on Flux 51- 73 A23 --- CName Counterpart name 75- 81 F7.3 deg RACdeg ? Counterpart right ascension (J2000) 83- 89 F7.3 deg DECdeg ? Counterpart declination (J2000) 91-117 A27 --- Type Type (2) 119-126 F8.6 --- z ? Redshift (3) 129-174 A46 --- OName Other name(s) 176 A1 --- Note Note (4)
Note (1): The flux is in units of 10-11erg/cm2^/s in the 4-10keV band, converted from Crab units; 1Crab=1.21x10-8erg/cm2/s Note (2): Abbreviations used: Sy = Seyfert galaxy LMXB = low-mass X-ray binary HMXB = high-mass X-ray binary Symb = symbiotic star NS = neutron star BHC = black hole candidate CV = cataclysmic variable ULX = ultra-luminous X-ray source msPSR = millisecond pulsar Note (3): The redshifts are taken from the online database SIMBAD and NED. A blank indicates the source is Galactic, and indicates the source has no redshift information. Note (4): Notes as follows: A = Identified by individual inspection since in the image fitting the position is unable to be determined due to significant source confusion with Perseus Cluster B = The data is extended compared with the PSF model C = Matsumura et al. (2011, ATel, 3308) D = Suzuki et al. (2010, ATel, 2401) E = Isobe et al. (2010PASJ...62L..55I) F = This source is likely to be contaminated by 1RXS J133344.4-231734 and TV Hya. ESO 509-IG66 has double nuclei with similar fluxes in the 2-10keV band (Guainazzi et al. 2005A&A...429L...9G). The redshift is adopted from Sekiguchi and Wolstencroft (1992MNRAS.255..581S). G = This source is possibly contaminated by V893 Sco and other nearby sources.
History: From electronic version of the journal
(End) Patricia Vannier [CDS] 20-Feb-2012
The document above follows the rules of the Standard Description for Astronomical Catalogues.From this documentation it is possible to generate f77 program to load files into arrays or line by line

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