J/A+A/495/733 XMM-Newton spectral survey of M31 disc (Shaw+, 2009)
An X-ray spectral survey of the disc of M31 with XMM-Newton.
Shaw Greening L., Barnard R., Kolb U., Tonkin C., Osborne J.P.
<Astron. Astrophys., 495, 733-741 (2009)>
=2009A&A...495..733S 2009A&A...495..733S
ADC_Keywords: Galaxies, nearby ; X-ray sources
Keywords: galaxies: individual: M 31 - X-rays: general - X-rays: binaries
Abstract:
We present the results of a complete spectral survey of the X-ray
point sources detected in five XMM-Newton observations along the major
axis of M 31 but avoiding the central bulge, aimed at establishing the
population characteristics of X-ray sources in this galaxy.
We obtained background subtracted spectra and lightcurves for each of
the 335 X-ray point sources detected across the five observations from
2002. We also correlate our source list with those of earlier X-ray
surveys and radio, optical and infra-red catalogues. Sources with more
than 50 source counts are individually spectrally fit in order to
create the most accurate luminosity functions of M 31 to date.
Description:
One observation of each disc field of M 31 was taken using the EPIC pn
and MOS cameras on XMM-Newton in January and June 2002
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
tablea1.dat 131 335 Position and spectral properties of each source
detected in five archival XMM-Newton
observations of the disc of M 31
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See also:
B/xmm : XMM-Newton Observation Log (XMM-Newton SOC, 2002)
J/ApJ/577/738 : M31 Chandra X-ray point sources (Kong+, 2002)
J/ApJ/578/114 : Chandra HRC source in M31 (Kaaret, 2002)
J/A+A/373/63 : M31 second ROSAT PSPC survey (Supper+, 2001)
J/A+A/434/483 : An XMM-Newton survey of M 31 (Pietsch+, 2005)
Byte-by-byte Description of file: tablea1.dat
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Bytes Format Units Label Explanations
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1- 3 I3 --- [SBK2009] [1/335] Source sequential number
5- 6 I2 h RAh Right ascension (J2000)
8- 9 I2 min RAm Right ascension (J2000)
11- 14 F4.1 s RAs Right ascension (J2000)
16 A1 --- DE- Declination sign (J2000)
17- 18 I2 deg DEd Declination (J2000)
20- 21 I2 arcmin DEm Declination (J2000)
23- 24 I2 arcsec DEs Declination (J2000)
26- 33 A8 --- Cam Detection camera(s)
35- 40 A6 --- Fit Best fit model (1)
43 A1 --- n_nH [f] f for fixed nH to 0.1x1022Hatom/cm2
45- 48 F4.2 10+22cm-2 nH ? Hydrogen column density
50- 53 F4.2 10+22cm-2 e_nH ? Error on nH (lower limit)
55- 59 F5.2 10+22cm-2 E_nH ? Error on nH (upper limit)
61- 65 F5.2 keV Gamma/kT ? Gamma or kT value (2)
67- 70 F4.2 keV e_Gamma/kT ? Error on Gamma/kT (lower limit)
72- 77 F6.2 keV E_Gamma/kT ? Error on Gamma/kT (upper limit)
80- 87 F8.3 10+29W Lum ? X-ray luminosity (3)
90- 97 F8.3 10+29W e_Lum ? rms uncertainty on Lum
99 A1 --- --- [/]
100-107 F8.3 10+29W Lum2 ? Second value of X-ray luminosity
109-116 F8.3 10+29W e_Lum2 ? rms uncertainty on Lum2
118-126 A9 --- Class Classification of X-ray source (4)
128-130 I3 --- [PFH2005] ? Source name in Pietsch et al.,
2005, Cat. J/A+A/434/483
131 A1 --- r_Class [?a] Reference for classification (5)
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Note (1): The best fit model to a source can be as follows:
faint = less than 50 source counts (no Gamma/kT value)
pl = power law (Gamma)
bb = blackbody (kT)
br = bremsstrahlung (kT)
nsa = neutron star atmosphere (kT)
diskbb = disk blackbody (kT)
Note (2): Appropriate parameter (photon index, Gamma, or temperature, kT)
of the best fit model
Note (3): derived from the model parameters with 90% confidence;
in 1036erg/s
Note (4): Classifications as follows:
fg Star = foreground star
= foreground star candidate
AGN = active galactic nucleus
= AGN candidate
Gal = galaxy
GCl = galaxy cluster
= supersoft source candidate in M 31
SNR = supernova remnant in M 31
= supernova remnant candidate in M 31
GlC = source in globular cluster
<GlC> = source in globular cluster candidate
XRB = X-ray binary in M 31
= HR2-e_HR2>-0.2 or only HR3 and HR4 defined,
and no other classification
Note (5): Flag "a" for this work classification, else from [PFH2005]
(Pietsch et al., 2005, Cat. J/A+A/434/483)
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History:
* 16-Sep-2009: From electronic version of the journal
* 22-June-2010: in tablea1, [PFH2005] 513 corrected in 512 (for
[SBK2009] 153) and [PFH2005] 512 corrected in 513.
(End) Patricia Vannier [CDS] 13-Aug-2009