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| Query : 2006ApJ...638..982N |
2006ApJ...638..982N - Astrophys. J., 638, 982-986 (2006/February-3)
The optical counterpart to the peculiar X-ray transient XTE J1739-302.
NEGUERUELA I., SMITH D.M., HARRISON T.E. and TORREJON J.M.
Abstract (from CDS):
The weak X-ray transient XTE J1739-302, characterized by extremely short outbursts, has recently been identified with a reddened star. Here we present spectroscopy and photometry of the counterpart, identifying it as a O8 Iab(f) supergiant at a distance of ∼2.3 kpc. XTE J1739-302 thus becomes the prototype of the new class of supergiant fast X-ray transients (SFXTs). The optical and infrared spectra of the counterpart to XTE J1739-302 do not reveal any obvious characteristics setting it apart from other X-ray binaries with supergiant companions, which display a very different type of X-ray light curve.
Abstract Copyright: ∼
Journal keyword(s): Stars: Binaries: Close - Stars: Supergiants - X-Rays: Binaries - X-rays: individual (XTE J1739-302)
CDS comments: Star A = 2MASS J17391155-3020380
Simbad objects: 11
| Number of rows : 11 |
| 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 | V* GP Vel | HXB | 09 02 06.8608812864 | -40 33 16.899168060 | 6.85 | 7.37 | 6.87 | 6.31 | 6.05 | B0.5Ia | 1588 | 0 |
| 2 | V* BP Cru | HXB | 12 26 37.5605188992 | -62 46 13.261044684 | 12.482 | 10.803 | 10.304 | B1Ia+ | 731 | 0 | ||
| 3 | HD 112244 | s*b | 12 55 57.1336250856 | -56 50 08.900570292 | 4.49 | 5.33 | 5.32 | 5.21 | 5.21 | O8.5Iab(f)p | 217 | 0 |
| 4 | HD 150698 | PM* | 16 43 51.4343921640 | -26 48 32.196563712 | 7.38 | 6.71 | G2/3V | 69 | 0 | |||
| 5 | IGR J16465-4507 | HXB | 16 46 35.2590465192 | -45 07 04.609890912 | 14.033 | O9.5Ia | 105 | 0 | ||||
| 6 | HD 151804 | s*b | 16 51 33.7218052272 | -41 13 49.919519496 | 4.45 | 5.29 | 5.22 | O8Iaf | 389 | 0 | ||
| 7 | AX J1739.1-3020 | HXB | 17 39 11.5515537336 | -30 20 37.787917704 | 14.40 | 13.91 | O8.5Iab(f) | 166 | 1 | |||
| 8 | IGR J17544-2619 | HXB | 17 54 25.2722906112 | -26 19 52.576928292 | 14.71 | 12.94 | 12.10 | 10.38 | O9Ib | 207 | 0 | |
| 9 | 4U 1907+09 | HXB | 19 09 38.0514267264 | +09 49 47.270139132 | 19.41 | 16.35 | 15.570 | 12.53 | O9.5Iab | 362 | 0 | |
| 10 | HD 226868 | HXB | 19 58 21.6757355952 | +35 12 05.784512688 | 9.38 | 9.72 | 8.91 | 8.42 | O9.7Iabpvar | 4590 | 0 | |
| 11 | NAME Galactic Bulge | reg | ~ | ~ | ~ | 4794 | 0 |
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