The XMM-Newton SSC survey of the Galactic plane | Astronomy & Astrophysics (A&A)

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Table 1

Target fields and source classification.

#	Field	l [°]	b [°]	N_H^†	Observation	Epic pn	N_tot	Active	HMXB	Pre-MS	EG	unID
				[cm^-2]	ID	exp [ks]		coronae

Optically bright sample, Rlim ~ 17
1	Ridge 1	33.1	+0.0	1.4 × 10²³	0017740401	26	4	1 (25%)	0	0	0	3
2	RX J0002+6246	117.0	+0.5	4.2 × 10²¹	0016140101	[17]	40	7 (18%)	1	0	0	32
3	LHB-3	111.1	+1.1	1.3 × 10²²	0203130201	19	42	13 (31%)	0	0	0	29
4	GRB 010220	135.1	+1.4	4.8 × 10²¹	0128530401	9	23	12 (52%)	0	0	0	11
5	Saturn	187.0	–1.6	6.2 × 10²¹	0089370501	21	44	6 (14%)	0	0	0	38
6	RX J0925.7-4758	271.4	+1.9	1.4 × 10²²	0111150201	57	42	9 (21%)	0	0	0	33
7	Ridge 2	33.0	+2.0	1.5 × 10²²	0017740601	20	39	12 (31%)	0	1	0	26
8	HTCas	125.2	–2.7	3.9 × 10²¹	0111310101	18	34	6 (18%)	0	0	0	28
9	PSR J0117+5914	126.3	–3.4	3.4 × 10²¹	0112200201	6	27	4 (14%)	1	0	0	22
10	Geminga	195.1	+4.3	3.0 × 10²¹	0111170101	[86]	88	9 (10%)	0	0	0	79
11	SS Cyg	90.7	–7.1	2.5 × 10²¹	0111310201	[12]	13	5 (38%)	0	0	2	6
12	ARLac	95.6	–8.3	1.9 × 10²¹	0111370101	[20]	24	5 (22%)	0	0	0	20
13	PSR0656+14	201.1	+8.3	5.0 × 10²⁰	0112200101	[21]	36	6 (17%)	0	0	0	30
14	PSR J2043+2740	70.6	–9.2	1.4 × 10²¹	0037990101	[17]	54	10(19%)	0	0	1	43
15	AX J2019+112	53.6	–13.5	1.2 × 10²¹	0112960301	12	69	6 (9%)	0	0	1	62
16	3C449	95.4	–15.9	8.9 × 10²⁰	0002970101	18	52	9 (17%)	0	1	3	39
17	3C436	80.2	–18.8	5.0 × 10²⁰	0201230101	29	65	5 (8%)	0	0	1	59

	All						696	125	2	2	8	560
								17.9%	0.3%	0.3%	1.1%	80.3%

Optically faint sample, Rlim ~ 21
18	GC2	0.9	+0.0	4.0 × 10²³	0112970201	13	38	15 (39%)	0	0	0	23
19	Ridge 3	20.0	+0.0	1.1 × 10²³	0104460301	8	22	11 (54%)	0	1	0	10
20	Ridge 4	20.4	+0.0	1.1 × 10²³	0104460401	5	12	2 (17%)	0	0	0	10
21	WR110	10.8	+0.4	5.5 × 10²²	0024940201	23	52	21 (40%)	1	1	0	28
22	G21.5-09 offset 2	21.5	–0.9	5.0 × 10²²	0122700301	25	24	5 (22%)	0	0	0	19
23	PKS 0745-19-offset	236.4	+3.3	2.3 × 10²¹	0105870201	36	88	24 (27%)	0	0	18	46
24	GRO J1655-40	345.0	+2.4	6.1 × 10²¹	0112460201	21	59	15 (25%)	0	0	1	43
25	Z And	109.0	–12.1	8.9 × 10²⁰	0093552701	17	48	13 (27%)	0	0	0	35
26	GRB 001025	237.4	+16.3	3.3 × 10²⁰	0128530301	26	87	4 (5%)	0	0	6	77

	All						430	110	1	2	25	291
								25.8%	0.2%	0.4%	5.8%	67.7%

	Total						1126	235	3	4	33	851

Notes. Field, Galactic coordinates, observation ID, EPIC-pn exposure time (EPIC-MOS exposure time in brackets), total number of 2XMMi-DR3 sources detected, number of identified active coronae (AC), High-mass X-ray binaries (HMXB), pre-main sequence stars (pre-MS), extragalactic sources (EG), and unidentified sources (unID). We restricted to sources with .

^(†)

Calculated hydrogen column density. We used the Schlegel et al. (1998) maps to estimate the colour excess E(B − V) at each Galactic position. We transformed into optical extinction A_V using the relation from Savage & Mathis (1979), and we used the empirical relation from Predehl & Schmitt (1995) to calculate N_H. We note that for very low Galactic latitudes (|b| < 5°) values could be wrong, but we use the values for orientative purposes.

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