2006ApJ...643..356W

Query : 2006ApJ...643..356W

2006ApJ...643..356W - Astrophys. J., 643, 356-375 (2006/May-3)

A catalog of transient X-ray sources in M31.

WILLIAMS B.F., NAIK S., GARCIA M.R. and CALLANAN P.J.

Abstract (from CDS):

From 1999 October to 2002 August, 45 transient X-ray sources were detected in M31 by Chandra and XMM-Newton. We have performed spectral analysis of all XMM-Newton and Chandra ACIS detections of these sources, as well as flux measurements of Chandra HRC detections. The result is absorption-corrected X-ray light curves for these sources covering this 2.8 yr period, along with spectral parameters for several epochs of the outbursts of most of the transient sources. We supply a catalog of the locations, outburst dates, peak observed luminosities, decay time estimates, and spectral properties of the transient sources, and we discuss similarities with Galactic X-ray novae. Duty cycle estimates are possible for eight of the transients and range from 34% to 2%; upper limits to the duty cycles are estimated for an additional 15 transients and cover a similar range. We find five transients that have rapid decay times and may be ultracompact X-ray binaries. Spectra of three of the transients suggest that they may be faint Galactic foreground sources. If even one is a foreground source, this suggests a surface density of faint transient X-ray sources of ≳1/deg2.

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Journal keyword(s): Accretion, Accretion Disks - Stars: Binaries: Close - Galaxies: Individual: Messier Number: M31 - X-Rays: Binaries - X-Rays: Stars

VizieR on-line data: <Available at CDS (J/ApJ/643/356): table1.dat table2.dat>

Simbad objects: 53

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Number of rows : 53
N Identifier Otype ICRS (J2000)
RA 		ICRS (J2000)
DEC 		Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2026 		#notes
1 CXOM31 J003838.7+401511 X 00 38 38.7 +40 15 11           ~ 3 0
2 [KGP2002] s1-79 X 00 40 55.16 +40 56 03.5           ~ 3 0
3 EV* M31 V0661 Ir* 00 41 39.9472625664 +41 04 25.188583944     20.90     ~ 6 0
4 CXOM31 J004141.9+410716 X 00 41 41.9 +41 07 17           ~ 4 0
5 CXOM31 J004149.2+405643 X 00 41 49.2 +40 56 44           ~ 4 0
6 [KGP2002] s1-80 X 00 41 54.63 +40 56 47.4           ~ 3 0
7 CXOM31 J004205.7+411330 XB? 00 42 05.84 +41 13 30.0           ~ 10 0
8 [HPH2013] 40 XB? 00 42 16.997 +41 15 08.54           ~ 11 0
9 [KGP2002] s1-82 X 00 42 20.82 +40 51 36.3           ~ 3 0
10 CXOM31 J004221.0+411808 X 00 42 21.075 +41 18 08.55           ~ 4 0
11 2MASS J00423442+4118106 No* 00 42 34.428 +41 18 10.64           ~ 13 1
12 [HPH2013] 93 XB? 00 42 34.771 +41 15 23.32           ~ 6 0
13 2XMM J004234.9+405720 XB? 00 42 34.97 +40 57 21.2           ~ 5 0
14 CXOM31 J004239.2+411424 X 00 42 39.2 +41 14 24           ~ 4 0
15 [BGM2013] BHC 9 X 00 42 39.57 +41 16 14.5           ~ 10 0
16 [KGP2002] r2-69 X 00 42 42.16 +41 14 24.4           ~ 2 0
17 2XMM J004242.1+411607 XB* 00 42 42.17 +41 16 08.3           ~ 17 0
18 V* S And No* 00 42 43.12368 +41 16 03.2124           ~ 190 2
19 [HPH2013] 152 XB? 00 42 43.793 +41 15 14.54           ~ 5 0
20 [HPH2013] 156 XB? 00 42 43.856 +41 16 04.05           ~ 7 0
21 [K2002] J004243.80+411629.2 X 00 42 43.883 +41 16 29.97           ~ 4 0
22 M31N 2000-07a No* 00 42 44.144 +41 17 54.90       16.8   ~ 23 0
23 M 31 AGN 00 42 44.330 +41 16 07.50 4.86 4.36 3.44     ~ 13622 1
24 [O2006] QSS 8 X 00 42 44.365 +41 16 07.65           ~ 9 0
25 CXOM31 J004245.2+411722 XB? 00 42 45.111 +41 17 22.41           ~ 10 0
26 [HPH2013] 186 XB? 00 42 45.996 +41 16 19.77           ~ 6 0
27 CXOM31 J004247.0+411412 X 00 42 47.16 +41 14 14.2           ~ 8 0
28 CXOM31 J004247.3+411507 No* 00 42 47.45 +41 15 07.7       18.6   ~ 13 0
29 2MASS J00424904+4119453 rG 00 42 49.0438817856 +41 19 45.714400896         17.80 ~ 8 0
30 [KGP2002] r2-72 X 00 42 51.2 +41 16 40           ~ 2 0
31 CXOM31 J004256.9+411844 XB? 00 42 56.914 +41 18 44.37           ~ 10 0
32 2MASS J00425938+4116461 No* 00 42 59.383 +41 16 46.14           ~ 15 0
33 Bol 146 GlC 00 43 02.921 +41 15 22.51 18.34 17.851 16.930 16.348 15.870 ~ 58 1
34 [BGM2013] BHC 27 XB* 00 43 03.241 +41 15 28.00           ~ 10 1
35 CXOM31 J004305.6+411702 XB? 00 43 05.66 +41 17 02.7           ~ 16 0
36 CXOM31 J004306.9+411810 No* 00 43 06.96 +41 18 09.9           ~ 17 1
37 INTREF 26 X 00 43 08.611 +41 18 21.43           ~ 9 0
38 2MASS J00430986+4119006 Gl? 00 43 09.8481275808 +41 19 00.778534248 19.586 18.829 17.723 17.045 16.452 ~ 37 0
39 RX J004318.6+412024 CV* 00 43 18.851 +41 20 18.52           ~ 24 0
40 NAME M31PSS CV* 00 43 19.59 +41 17 56.9           ~ 26 0
41 [KGP2002] n1-86 X 00 44 14.0 +01 22 04           ~ 2 0
42 INTREF 29 XB* 00 44 16.00 +41 30 57.5           ~ 8 1
43 [KGP2002] n1-88 X 00 44 28.4 +41 56 28           ~ 2 0
44 RX J0044.6+4145 AG? 00 44 37.80 +41 45 13.3           ~ 15 0
45 RX J0045.4+4154 No* 00 45 28.80 +41 54 10.1           ~ 263 1
46 PTF1 J004546.00+415030.0 ** 00 45 45.909 +41 50 30.07   18.9   16.8   DA+M3 9 0
47 CXOM31 J004639.0+413907 * 00 46 39.0691236120 +41 39 08.222762160           ~ 3 0
48 V* V822 Cen LXB 14 58 21.9347842080 -31 40 07.515432768 11.95 12.85 12.8     K3-K7V 555 0
49 V* V381 Nor HXB 15 50 58.6637920704 -56 28 35.258385000           K3III 1254 0
50 V* V1033 Sco HXB 16 54 00.1423963019 -39 50 44.761701340       16.14   F3-6IV 1980 0
51 X Sgr X-4 LXB 18 23 40.57 -30 21 40.6   19.06 18.81     ~ 1056 1
52 V* V406 Vul HXB 18 58 41.49127200 +22 39 29.7746640           G5V-K0V 409 0
53 X Aql X-1 LXB 19 11 16.0571313336 +00 35 05.868232692           ~ 1186 1

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