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J/A+A/373/63        M31 second ROSAT PSPC survey             (Supper+, 2001)

The second ROSAT PSPC survey of M31 and the complete ROSAT PSPC source list. Supper R., Hasinger G., Lewin W.H.G., Magnier E.A., van Paradijs J., Pietsch W., Read A.M., Truemper J. <Astron. Astrophys. 373, 63 (2001)> =2001A&A...373...63S
ADC_Keywords: Galaxies, nearby ; X-ray sources ; Surveys Keywords: galaxies: fundamental parameters - galaxies: individual: M31 - galaxies: spiral - X-rays: galaxies Abstract: This paper reports the results of the analysis of the second ROSAT PSPC survey of M 31 performed in summer 1992. We compare our results with those of the first survey, already published in Supper et al. (1997, Cat. J/A+A/317/328). Within the ∼10.7deg2 field of view, 396 individual X-ray sources are detected in the second survey data, of which 164 are new detections. When combined with the first survey, this result in a total of 560 X-ray sources in the field of M 31. Their (0.1keV-2.0keV) fluxes range from 7x10-15erg/cm2/s to 7.6x10-12erg/cm2/s, and of these 560 sources, 55 are tentatively identified with foreground stars, 33 with globular clusters, 16 with supernova remnants, and 10 with radio sources and galaxies (including M 32). A comparison with the results of the Einstein M 31 survey reveals 491 newly detected sources, 11 long term variable sources, and 7 possible transient sources. Comparing the two ROSAT surveys, we come up with 34 long term variable sources and 8 transient candidates. File Summary:
FileName Lrecl Records Explanations
ReadMe 80 . This file table5.dat 102 396 All X-ray sources found with the ROSAT PSPC during the second M31 survey table6.dat 124 560 All X-ray sources coming out of a merge of the source lists from the first and second M31 survey table7.dat 63 69 Identification list of a correlation between the ROSAT PSPC catalog and the X-ray source list of TF91 (Trinchieri & Fabbiano, 1991ApJ...382...82T) obtained from observations with the Einstein satellite table8.dat 68 114 Table of all optical and radio identifications
See also: II/144 : Brightest stars in the field of M31 (Berkhuijsen+ 1988) IX/30 : Second ROSAT PSPC Catalog (ROSAT, 2000) IX/13 : The 2E Catalogue (Harris+ 1994) J/ApJS/118/177 : JHK photometry of M31 spiral arm (Kodaira+, 1998) J/ApJ/504/113 : F175W and F275W photometry of M31 and M32 (Brown+, 1998) J/ApJ/324/172 : M31 UBVR photometry (Hodge+, 1988) J/A+A/278/36 : M 31 new OB associations (Magnier+ 1993) J/A+A/317/328 : ROSAT PSPC survey of M 31 (Supper+ 1997) Byte-by-byte Description of file: table5.dat
Bytes Format Units Label Explanations
1 A1 --- n_SII [*] *: Bulge source 2- 4 I3 --- SII Source number (second survey) 6 I1 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- 27 I2 arcsec e_Pos 1 sigma position error 29 I1 --- Qual [1,4] Quality class (1=best, 4=worst) 31- 37 F7.1 --- LH Likelihood of detection 39 A1 --- l_RB Limit flag on RB 40- 45 F6.2 ct/ks RB Count rate 0.1-2.0keV 47- 50 F4.2 ct/ks e_RB ? 1 sigma error in RB 53 A1 --- l_RS Limit flag on RS 54- 58 F5.2 ct/ks RS Count rate 0.1-0.4keV 60- 63 F4.2 ct/ks e_RS ? 1 sigma error in RS 65 A1 --- l_RH Limit flag on RH 66- 71 F6.2 ct/ks RH Count rate 0.5-2.0keV 73- 76 F4.2 ct/ks e_RH ? 1 sigma error in RH 79 A1 --- l_RH1 Limit flag on RH1 80- 84 F5.2 ct/ks RH1 Count rate 0.5-0.9keV 86- 89 F4.2 ct/ks e_RH1 ? 1 sigma error in RH1 91 A1 --- l_RH2 Limit flag on RH2 92- 97 F6.2 ct/ks RH2 Count rate 0.9-2.0keV 99-102 F4.2 ct/ks e_RH2 ? 1 sigma error in RH2
Byte-by-byte Description of file: table6.dat
Bytes Format Units Label Explanations
1- 2 A2 --- Class Note (1) 3- 17 A15 --- RXJ RXJ source number 18 A1 --- f_RXJ Source also correlated with Einstein (table 7) 20- 22 I3 --- SII ? Number in this second survey 24- 26 I3 --- [SHP97] ? Source number (first survey) (2) 28 A1 --- Marker [±] Marker of data identification (3) 30 I1 h RAh Right ascension (J2000) 32- 33 I2 min RAm Right ascension (J2000) 35- 38 F4.1 s RAs Right ascension (J2000) 40 A1 --- DE- Declination sign (J2000) 41- 42 I2 deg DEd Declination (J2000) 44- 45 I2 arcmin DEm Declination (J2000) 47- 48 I2 arcsec DEs Declination (J2000) 50- 51 I2 arcsec e_Pos 1 sigma position error 53 I1 --- Qual Quality class (1=best, 4=worst) 55- 61 F7.1 --- LH Likelihood of detection 63 A1 --- l_RB Limit flag on RB 64- 69 F6.2 ct/ks RB Count rate 0.1-2.0 keV 71- 74 F4.2 ct/ks e_RB ? 1 sigma error in RB 76 A1 --- l_RS Limit flag on RS 77- 81 F5.2 ct/ks RS Count rate 0.1-0.4 keV 83- 86 F4.2 ct/ks e_RS ? 1 sigma error in RS 88 A1 --- l_RH Limit flag on RH 89- 94 F6.2 ct/ks RH Count rate 0.5-2.0 keV 96- 99 F4.2 ct/ks e_RH ? 1 sigma error in RH 101 A1 --- l_RH1 Limit flag on RH1 102-106 F5.2 ct/ks RH1 Count rate 0.5-0.9 keV 108-111 F4.2 ct/ks e_RH1 ? 1 sigma error in RH1 113 A1 --- l_RH2 Limit flag on RH2 114-119 F6.2 ct/ks RH2 Count rate 0.9-2.0 keV 121-124 F4.2 ct/ks e_RH2 ? 1 sigma error in RH2
Note (1): Notes: a: Foreground star b: Galaxy c: Supersoft source candidate d: Globular cluster e: SNR *: Bulge source ~: Variable source (ref. Table2, 3 and footnote in Sect. 4.1.1) +: Source with uncertain count rate Note (2): SI number is listed if source was seen during the first survey (number as listed in S97, Supper et al., Cat. J/A+A/317/328). No number means source was *not* seen in the first survey (only seen in the second). Note (3): Markers are: '+' = Source was seen in both surveys and listed data are from the first survey. '-' = Source was seen in both surveys and listed data are from the second survey. blank = Source was *only* seen in the first survey, listed data are being from there.
Byte-by-byte Description of file: table7.dat
Bytes Format Units Label Explanations
1 A1 --- n_RXJ [*] Bulge source 2- 16 A15 --- RXJ RXJ source number 18- 22 F5.2 10-16W/m2 FR ROSAT Flux (1) 24- 27 F4.2 10-16W/m2 e_FR 1 sigma error in FR 29- 31 I3 --- E Einstein source number (2) 33- 37 F5.2 10-16W/m2 FE Einstein Flux (1) 39- 42 F4.2 10-16W/m2 e_FE 1 sigma error in FE 44- 47 F4.1 arcsec Dist Absolute distance between correlating sources 49- 52 F4.2 --- DistRel Relative distance between correlating sources (3) 54- 58 F5.2 --- FRat Flux ratio: FR / FE 60- 63 F4.2 --- e_FRat 1 sigma error in FRat
Note (1): Model of TF91 (Trinchieri & Fabbiano, 1991ApJ...382...82T): Thermal Bremsstrahlung kT=5keV, NH=7x1020/cm2 in the 0.2-4.0 keV energy band. Note (2): According to the source list of TF91, Trinchieri & Fabbiano, 1991ApJ...382...82T. Note (3): In sigma of the geometrical combined position error of each source.
Byte-by-byte Description of file: table8.dat
Bytes Format Units Label Explanations
1- 15 A15 --- RXJ ROSAT designation 17- 27 A11 --- Class Object classification 29- 58 A30 --- Id Optical identifications (1) 60- 63 F4.1 arcsec Dist Distance between X-ray and optical sources 65- 68 F4.2 arcsec e_Dist rms uncertainty on Dist
Note (1): Identifications: BA87: Battistini et al., 1987A&AS...67..447B, Bol NNN BA93: Battistini et al., 1993A&A...272...77B, NBol NNN BW93: Braun & Walterbos, 1993A&AS...98..327B, [WB92a] NNNA DO80: D'Odorico et al., 1980A&AS...40...67D, DDB M 31 NN HA94: Haiman et al., 1994A&A...286..725H, Cat. II/208 MA94a: Magnier et al., 1994, A&AS, submitted MA95: Magnier et al., 1995, Cat. J/A+AS/114/215, [MPV95] N-NNN
Acknowledgements: Rodrigo Supper
(End) Rodrigo Supper [MPE], Patricia Bauer [CDS] 22-Jun-2001
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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