2008ApJ...689.1222M

Query : 2008ApJ...689.1222M

2008ApJ...689.1222M - Astrophys. J., 689, 1222-1233 (2008/December-3)

Discovery and interpretation of an X-ray period in the Galactic center source CXOGC J174536.1-285638.

MIKLES V.J., EIKENBERRY S.S., BANDYOPADHYAY R.M. and MUNO M.P.

Abstract (from CDS):

We present X-ray and infrared observations of the X-ray source CXOGC J174536.1-285638. Previous observations suggest that this source may be an accreting binary with a high-mass donor (HMXB) or a colliding wind binary (CWB). Based on the Chandra and XMM-Newton light curve, we have found an apparent 189±6 day periodicity with better than 99.997% confidence. We discuss several possible causes of this periodicity, including both orbital and superorbital interpretations. We explore in detail the possibility that the X-ray modulation is related to an orbital period and discuss the implications for two scenarios; one in which the variability is caused by obscuration of the X-ray source by a stellar wind, and the other in which it is caused by an eclipse of the X-ray source. We find that in the first case, CXOGC J174536.1-285638 is consistent with both CWB and HMXB interpretations, but in the second, CXOGC J174536.1-285638 is more likely a HMXB.

Abstract Copyright: ∼

Journal keyword(s): Accretion, Accretion Disks - Infrared: Stars - stars: individual (CXOGC J174536.1-2856 (read: CXOGC J174536.1-285638)) - X-Rays: Binaries - X-Rays: Stars

CDS comments: Fig.1 : Star 2 not identified

Simbad objects: 29

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Number of rows : 29
N Identifier Otype ICRS (J2000)
RA 		ICRS (J2000)
DEC 		Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2024 		#notes
1 HD 15558 Y*O 02 32 42.5366901168 +61 27 21.572901360 7.82 8.37 7.87 7.34 6.94 O4.5III(f) 314 0
2 V* X Per HXB 03 55 23.0777456088 +31 02 45.039836148 6.090 6.840 6.720     O9.5III 978 0
3 HD 34921 HXB 05 22 35.2313961840 +37 40 33.638562768 6.78 7.64 7.48     B0IVpe 133 0
4 * iot Ori SB* 05 35 25.9819073 -05 54 35.643537 1.45 2.53 2.77     O9IIIvar 773 0
5 HD 245770 HXB 05 38 54.5748918624 +26 18 56.836952784 9.30 9.84 9.39 8.77 8.30 O9/B0III/Ve 983 0
6 HD 47129 SB* 06 37 24.0420854544 +06 08 07.369104444 5.23 6.11 6.06     O8I+O7.5III 398 0
7 * 29 CMa SB* 07 18 40.3789353696 -24 33 31.318248528 3.80 4.80 4.95 4.95 5.08 O7Iafpvar 417 0
8 * gam02 Vel WR* 08 09 31.95013 -47 20 11.7108 0.64 1.58 1.83 1.85 2.00 WC8+O7.5III-V 906 0
9 V* GP Vel HXB 09 02 06.8608812864 -40 33 16.899168060 6.85 7.37 6.87 6.31 6.05 B0.5Ia 1505 0
10 V* V560 Car SB* 10 44 33.7393258944 -59 44 15.434446956 6.89 7.80 7.75 7.56 7.46 O3.5V((f))+O8V 301 0
11 * eta Car Em* 10 45 03.545808 -59 41 03.95124 6.37 7.03 6.48 6.123 4.41 LBV 2440 0
12 V* V779 Cen HXB 11 21 15.0920532528 -60 37 25.630264596   14.4 12.27     O9III/Veq 1098 0
13 V* BR Cir HXB 15 20 40.8532547060 -57 10 00.206639033   21.4 21.4     ~ 781 1
14 IGR J16318-4848 HXB 16 31 48.3090342864 -48 49 00.665054832         16.217 B[e]I 173 0
15 HD 152248 Y*O 16 54 10.0618206816 -41 49 30.139291596 5.56 6.15 6.088     O7Iabf+O7Ib(f) 260 0
16 NAME Edd-1 WR* 17 45 36.12 -28 56 38.7           WN8-9h 18 0
17 NAME Galactic Center reg 17 45 39.60213 -29 00 22.0000           ~ 14415 0
18 NAME Sgr A* X 17 45 40.03599 -29 00 28.1699           ~ 4390 3
19 WR 102-1 WR* 17 46 45.34 -28 15 46.1           WC? 7 0
20 HD 186943 WR* 19 46 15.9393580368 +28 16 19.077099276 9.86 10.50 10.23     WN3+O9.5V 189 0
21 HD 226868 HXB 19 58 21.6757355952 +35 12 05.784512688 9.38 9.72 8.91 8.42   O9.7Iabpvar 4337 0
22 HD 190918 WR* 20 05 57.3244526328 +35 47 18.150756792 6.11 6.88 6.75     WN5+O9I 369 0
23 HD 193077 WR* 20 17 00.0260987184 +37 25 23.785483116 7.82 8.32 8.01 8.71   WN5-w+B? 290 0
24 HD 193576 WR* 20 19 32.4229160448 +38 43 53.959035756 8.15 8.53 8.00     WN5+O6II-V 707 0
25 V* V2246 Cyg HXB 20 32 15.2749858128 +37 38 14.843024844   22.16 19.41 17.32 15.18 B0Ve 440 0
26 HD 199579 SB* 20 56 34.7779063080 +44 55 29.000891928 5.16 6.01 5.96     O6.5V((f))z 365 0
27 HD 206267 SB* 21 38 57.6195772032 +57 29 20.554016280 5.09 5.83 5.62   5.56 O6.0V((f))+O9:V 499 0
28 V* V1341 Cyg LXB 21 44 41.1544345272 +38 19 17.066570988 15.00 15.13 14.68 15.00   A9III 1155 1
29 MR 114 WR* 22 09 33.4430950032 +57 44 30.527883600 12.78 12.946 12.078 11.853   WN4+O5V 141 0

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