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 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 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 2011PASJ...63S.635S;
Mihara et al. 2011PASJ...63S.623M 2011PASJ...63S.623M) and Solid-state Slit Camera (SSC:
Tsunemi et al. 2010PASJ...62.1371T 2010PASJ...62.1371T; Tomida et al. 2011PASJ...63..397T 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:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table1.dat 176 148 Cataloged sources in the MAXI/GSC survey
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Byte-by-byte Description of file: table1.dat
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Bytes Format Units Label Explanations
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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)
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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 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 2005A&A...429L...9G). The redshift is
adopted from Sekiguchi and Wolstencroft (1992MNRAS.255..581S 1992MNRAS.255..581S).
G = This source is possibly contaminated by V893 Sco and other nearby
sources.
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History:
From electronic version of the journal
(End) Patricia Vannier [CDS] 20-Feb-2012