2007MNRAS.377.1295J


C.D.S. - SIMBAD4 rel 1.7 - 2021.04.15CEST06:54:20

2007MNRAS.377.1295J - Mon. Not. R. Astron. Soc., 377, 1295-1300 (2007/May-3)

The quasi-persistent neutron star soft X-ray transient 1M 1716-315 in quiescence.

JONKER P.G., BASSA C.G. and WACHTER S.

Abstract (from CDS):

We report on our analysis of a 20 ks Chandra X-ray observation of the quasi-persistent neutron star soft X-ray transient (SXT) 1M 1716-315 in quiescence. Only one source was detected in the HEAO-1 error region. Its luminosity is 1.6x1032-1.3x1033 erg/s. In this, the range is dominated by the uncertainty in the source distance. The source spectrum is well described by an absorbed soft spectrum, e.g. a neutron star atmosphere or blackbody model. No optical or near-infrared counterpart is present at the location of the X-ray source, down to a magnitude limit of I ≳ 23.5 and Ks≳ 19.5. The positional evidence, the soft X-ray spectrum together with the optical and near-infrared non-detections provide strong evidence that this source is the quiescent neutron star SXT. The source is 10-100 times too bright in X-rays in order to be explained by stellar coronal X-ray emission. Together with the interstellar extinction measured in outburst and estimates for the source distance, the reported optical and near-infrared limit give an upper limit on the absolute magnitude of the counterpart of I > 8.6 and Ks> 5.1. This implies that the system is either an ultra-compact X-ray binary having Porb< 1h or the companion star is an M-dwarf. We reconstructed the long-term X-ray light curve of the source. 1M 1716-315 has been active for more than 12 yr before returning to quiescence, the reported Chandra observation started 16.9±4.1 yr after the outburst ended.

Abstract Copyright: 2007 The Authors. Journal compilation © 2007 RAS

Journal keyword(s): accretion: accretion discs - stars: individual: 1M 1716-315 - binaries: general - stars: neutron - X-rays: binaries

Simbad objects: 34

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Number of rows : 34

N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2021
#notes
1 V* UY Vol LXB 07 48 33.71 -67 45 07.7 16.10 17.00 16.9 16.7 17.05 ~ 586 0
2 V* BW Ant LXB 09 29 20.19 -31 23 03.2   18.50 18.63     ~ 177 0
3 MXB 1658-298 LXB 17 02 06.54 -29 56 44.1 18.35 18.75 18.3     ~ 336 0
4 4U 1711-34 LXB 17 14 19.78 -34 02 47.3           ~ 43 0
5 CXOU J171830.7-320927 X 17 18 30.690 -32 09 27.31           ~ 1 0
6 CXOU J171833.1-320630 X 17 18 33.1127754788 -32 06 30.959867564           ~ 1 0
7 CXOU J171836.0-320940 X 17 18 36.010 -32 09 40.40           ~ 1 0
8 CXOU J171841.2-321228 X 17 18 41.240 -32 12 28.90           ~ 1 0
9 2MASS J17184240-3206437 X 17 18 42.40 -32 06 43.7           ~ 1 0
10 CXOU J171845.6-321117 X 17 18 45.610 -32 11 17.32           ~ 1 0
11 CXOU J171847.0-321013 X 17 18 47.020 -32 10 13.54           ~ 1 0
12 1H 1715-321 LXB 17 18 47.40 -32 10 40.0           ~ 74 0
13 CXOU J171849.4-321209 X 17 18 49.380 -32 12 09.93           ~ 1 0
14 CXOU J171850.2-321053 X 17 18 50.190 -32 10 53.03           ~ 1 0
15 CXOU J171850.3-321106 X 17 18 50.300 -32 11 06.35           ~ 1 0
16 CXOU J171851.3-320851 X 17 18 51.340 -32 08 51.77           ~ 1 0
17 2MASS J17185390-3210065 X 17 18 53.90 -32 10 06.6           ~ 1 0
18 CXOU J171856.8-321041 X 17 18 56.80 -32 10 41.2           ~ 1 0
19 CXOU J171856.8-320943 X 17 18 56.81 -32 09 43.8           ~ 1 0
20 CXOU J171858.0-320932 X 17 18 58.000 -32 09 32.44           ~ 1 0
21 CXOU J171859.2-321147 X 17 18 59.220 -32 11 47.86           ~ 1 0
22 CXOU J171900.2-320958 X 17 19 00.250 -32 09 58.98           ~ 1 0
23 2MASS J17190330-3211234 * 17 19 03.3115580438 -32 11 23.421107415           ~ 2 0
24 CXOU J171903.4-320925 X 17 19 03.33 -32 09 25.8           ~ 1 0
25 2MASS J17190499-3210228 X 17 19 04.99 -32 10 22.8           ~ 1 0
26 KS 1731-260 LXB 17 34 13.46 -26 05 18.6       22.8 20.9 ~ 399 0
27 1RXS J173546.9-302859 LXB 17 35 46.88 -30 29 00.4           ~ 68 1
28 [KRL2007b] 291 LXB 17 51 13.49 -30 37 23.4           ~ 234 0
29 [KRL2007b] 297 LXB 17 59 45.7 -22 01 39           ~ 61 1
30 [KRL2007b] 304 LXB 18 06 59.8 -29 24 30           ~ 203 0
31 V* V4634 Sgr LXB 18 29 28.2 -23 47 49 18.90 19.40 19     ~ 300 0
32 2MAXI J1900-248 LXB 19 00 08.65 -24 55 13.7     18.09     ~ 188 0
33 4U 1857+01 LXB 19 08 26.97 +00 10 07.7 20.50 21.00 20.5     ~ 124 0
34 V* V1727 Cyg LXB 21 31 26.2132551598 +47 17 24.514506031 16.75 17.05 16.4     ~ 232 0

    Equat.    Gal    SGal    Ecl

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2021.04.15-06:54:20

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