An X-ray spectral survey of the disc of M 31 with XMM-Newton

Home

All issues

Volume 495 / No 3 (March I 2009)

A&A, 495 3 (2009) 733-741

Full HTML

Free Access

Table 5:

X-ray properties of the 18 candidate HMXBs with a photon index between 0.8 and 1.2. Coordinates are astrometrically corrected. The parameters of the best fit power law model are quoted in Cols. 5 & 6. The symbol f signifies that the absorption was fixed to $0.1 \times 10^{22}$ H atoms cm^-2. 90% confidence interval errors are quoted for both the absorption and photon index. Next we give the luminosity derived from the best fit model, the bracketed numbers are the error in the last significant figure. The luminosity and its errors are calculated from the 90% confidence interval. We also give the V magnitude absorption at the distance of M 31. The final column indicates the Massey et al. (2006) designation of any optical source within 3.3'' of the astrometrically corrected position. The strong candidates are listed in the top section of the table and the secondary candidates in the lower section.
Field	Source	RA	Dec	$n_{\rm H}$	Photon index	Luminosity	$A_{\rm v}$	Optical
	Number	(J2000)	(J2000)	/10²² H atom cm^-2		/10³⁶ erg s^-1		coincidence
South 2	21	00:40:01.50	+40:32:45.9	$0.4^{\rm +0.6}_{-0.3}$	$0.9^{\rm +0.4}_{-0.5}$	2.3(10)	2.29	-
South 2	34	00:40:17.07	+40:48:40.7	$0.21^{\rm +0.67}_{-0.14}$	$1.2^{\rm +1.0}_{-0.7}$	8(4)	1.17	-
South 1	99	00:42:10.97	+41:06:47.6	f	$0.8^{\rm +0.5}_{-0.4}$	9(4)	0.56	J004210.83+410647.2
South 1	106	00:42:16.76	+41:00:21.0	$0.4^{\rm +0.6}_{-0.3}$	$1.1^{\rm +0.6}_{-0.4}$	5(2)	2.12	-
North 1	123	00:43:01.44	+41:30:17.5	$0.18^{\rm +0.07}_{-0.06}$	$0.9^{\rm +0.1}_{-0.1}$	74(6)	1.01	J004301.51+413017.5
North 1	149	00:43:54.50	+41:31:04.0	f	$0.9^{\rm +0.7}_{-0.7}$	1.0(7)	0.56	J004354.62+413101.0
North 1	160	00:44:06.64	+41:38:57.8	f	$1.0^{\rm +0.6}_{-0.7}$	1.1(8)	0.56	-
North 1	172	00:44:20.87	+41:35:41.9	f	$1.1^{\rm +0.6}_{-0.6}$	1.3(9)	0.56	J004421.01+413544.3
North 1	197	00:44:47.29	+41:44:12.6	f	$1.0^{\rm +0.8}_{-0.7}$	5(3)	0.56	-
North 2	256	00:45:58.82	+42:04:27.5	$0.3^{\rm +0.4}_{-0.2}$	$1.2^{\rm +0.4}_{-0.5}$	5(2)	1.62	J004558.98+420426.5
North 3	234	00:45:34.96	+42:17:53.0	f	$0.9^{\rm +0.7}_{-0.6}$	4(3)	0.56	J004534.90+421752.8
North 3	236	00:45:37.31	+42:12:33.4	f	$0.9^{\rm +0.6}_{-0.5}$	3(2)	0.56	-
North 3	294	00:46:43.80	+42:09:48.2	f	$1.1^{\rm +0.4}_{-0.3}$	1.9(10)	0.56	J004644.02+420950.0
North 3	295	00:46:42.82	+42:27:16.3	f	$1.1^{\rm +0.7}_{-0.5}$	3(2)	0.56	-
North 3	302	00:46:53.52	+42:19:14.4	f	$0.9^{\rm +0.6}_{-0.7}$	1.1(7)	0.56	J004653.49+421914.4
North 3	305	00:46:58.61	+42:24:15.5	f	$1.1^{\rm +0.8}_{-0.7}$	2.0(14)	0.56	-
South 2	9	00:39:38.77	+40:47:55.9	f	$0.8^{\rm +0.9}_{-0.7}$	5(4)	0.56	-
North 2	226	00:45:26.66	+41:56:35.3	f	$0.9^{\rm +0.9}_{-0.9}$	1.7(13)	0.56	J004526.58+415633.1

Source LaTeX | All tables | In the text

Current usage metrics show cumulative count of Article Views (full-text article views including HTML views, PDF and ePub downloads, according to the available data) and Abstracts Views on Vision4Press platform.

Data correspond to usage on the plateform after 2015. The current usage metrics is available 48-96 hours after online publication and is updated daily on week days.

Initial download of the metrics may take a while.