Table 1
Sample of SFXTs and candidates.
| Name (1) | Spectral type (2) | Distance (kpc) (3) | Pspin (s) (4) | Porb (d) (5) | Psup (d) (6) | Eclipse (7) | e (8) | Ref. Disc (9) | References | |||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Sp.T. (10) | D (11) | Pspin (12) | Porb; e (13) | Psup (14) | Eclipse (15) | |||||||||
| IGR J08408−4503 | O8.5Ib-II(f)p |  |
– | 9.5436 ± 0.0002 | 285±10 | N | 0.63 ± 0.03 | 1 | 2 | 3 | – | 4; 4 | 4 | – |
| IGR J11215−5952 | B0.5Ia |  |
186.78 ± 0.3 | 164.6 | – | N | >0.8 | 5 | 6 | 3 | 7 | 8; 9 | – | – |
| IGR J16328−4726 | O8Iafpe | 7.2±0.3 | – | 10.076 ± 0.003 | – | N | – | 10 | 11 | 12 | – | 13 | – | – |
| IGR J16418−4532 | BN0.5Ia | 13 | 1209.12 ± 0.42 | 3.73886 ± 0.00003 | 14.730 ± 0.006 | Y | – | 14 | 15 | 15 | 16 | 17 | 18 | 19 |
| IGR J16465−4507(a) | B0.5Ib/O9.5Ia |  |
228 ± 6 | 30.243 ± 0.035 | – | N | <0.6,<0.8 | 23 | 21,15 | 15,22 | 23 | 24; 25 | – | – |
| IGR J16479−4514 | O8.5I | 4.45 | – | 3.3193 ± 0.0005 | 11.880 ± 0.002 | Y | – | 26 | 15 | 27 | – | 28 | 18 | 29 |
| XTE J1739−302 | O8Iab(f) | 2.01±0.16 | – | 51.47 ± 0.02(b) | – | N | <0.8 | 30,31 | 32 | 3 | – | 33; 33 | – | – |
| IGR J17544−2619 | O9Ib | 3.0±0.2 | 71.49 ± 0.02(c) | 4.926 ± 0.001 | – | N | >0 | 34 | 35 | 36 | 37 | 38; 38 | – | – |
| SAX J1818.6−1703 | O9I-B1I | 2.1 ± 0.1 | – | 30 ± 0.1 | – | N | 0.3–0.4 | 39 | 40 | 41 | – | 42,43; 43 | – | – |
| AX J1841.0−0536 | B1Ib |  |
4.7394 ± 0.0008?(d) | 6.4565 ± 0.0055(e) | – | N | – | 44,45 | 22 | 22,46 | 45 | 47 | – | – |
| AX J1845.0−0433 | O9.5I | 6.4 ± 0.76 | – | 5.7195 ± 0.0007 | – | N | <0.37 | 48 | 49 | 50 | – | 51; 51 | – | – |
| IGR J18483−0311 1 | B0.5Ia/B0-B1Iab | 2.83 ± 0.05 | 21.0526 ± 0.0005(f) | 18.545 ± 0.003 | – | N | 0.4 | 52 | 15,41 | 41 | 53 | 54,17; 55 | – | – |
| 2XMM J185114.3(g) | – | 12 | – | – | – | – | – | 56,57 | – | 58 | – | – | – | – |
Notes. Binary properties and optical counterparts. (a) Classical HMXB, not considered further. (b) See Romano et al. (2009b, Porb = 12.8658 ± 0.0073 d). (c) See Romano et al. (2015a, Pspin = 11.6 ± 0.13 s). (d) See Bozzo et al. (2011). (e) Tentative.(f) See Ducci et al. (2013). (g) Candidate SFXT.
References. (1) Götz et al. (2006); (2) Sota et al. (2014); (3) Bailer-Jones et al. (2021); (4) Gamen et al. (2015); (5) Lubinski et al. (2005); (6) Vijapurkar & Drilling (1993); (7) Swank et al. (2007); (8) Romano et al. (2009c); (9) Lorenzo et al. (2014); (10) Bird et al. (2007); (11) Coleiro et al. (2013); (12) Persi et al. (2015); (13) Corbet et al. (2010); (14) Tomsick et al. (2004); (15) Rahoui et al. (2008); (16) Drave et al. (2013); (17) Levine et al. (2011); (18) Corbet & Krimm (2013); (19) Corbet et al. (2006); (20) Lutovinov et al. (2004); (21) Negueruela et al. (2007); (22) Nespoli et al. (2008); (23) Lutovinov et al. (2005); (24) La Parola et al. (2010); (25) Clark et al. (2010); (26) Molkov et al. (2003); (27) Arnason et al. (2021); (28) Romano et al. (2009b); (29) Bozzo et al. (2008a); (30) Smith et al. (1997); (31) Smith et al. (1998); (32) Negueruela et al. (2006); (33) Drave et al. (2010); (34) Sunyaev et al. (2003); (35) Pellizza et al. (2006); (36) Gimenez-Garcia et al. (2016); (37) Drave et al. (2012); (38) Clark et al. (2009); (39) in’t Zand et al. (1998); (40) Negueruela & Schurch (2007); (41) Torrejón et al. (2010); (42) Bird et al. (2009); (43) Zurita Heras & Chaty (2009); (44) Bamba & Koyama (1999); (45) Bamba et al. (2001); (46) Sguera et al. (2009); (47) González-Galán (2015); (48) Yamauchi et al. (1995); (49) Coe et al. (1996); (50) Coleiro & Chaty (2013); (51) Goossens et al. (2013); (52) Chernyakova et al. (2003); (53) Sguera et al. (2007); (54) Levine & Corbet (2006); (55) Romano et al. (2010a); (56) Watson et al. (2009); (57) Lin et al. (2012); (58) Romano et al. (2016).
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