2008A&A...484...43F


C.D.S. - SIMBAD4 rel 1.7 - 2021.02.25CET16:14:32

2008A&A...484...43F - Astronomy and Astrophysics, volume 484, 43-50 (2008/6-2)

Intermediate long X-ray bursts from the ultra-compact binary candidate SLX 1737-282.

FALANGA M., CHENEVEZ J., CUMMING A., KUULKERS E., TRAP G. and GOLDWURM A.

Abstract (from CDS):

The low persistent flux X-ray burster source SLX 1737-282 is classified as an ultra-compact binary candidate. We compare the data on SLX 1737-282 with the other similar objects and attempt to derive constraints on the physical processes responsible for the formation of intermediate long bursts. Up to now only four bursts, all with duration between ≃15-30min, have been recorded for SLX 1737-282. The properties of three of these intermediate long X-ray bursts observed by INTEGRAL are investigated and compared to other burster sources. The broadband spectrum of the persistent emission in the 3-100keV energy band is studied with the INTEGRAL data. The persistent emission is measured to be 0.5% Eddington luminosity. From the photospheric radius expansion observed during at least one burst we derive the source distance at 7.3kpc assuming a pure helium atmosphere. The observed intermediate long burst properties from SLX 1737-282 are consistent with helium ignition at the column depth of 5-8x109g/cm2 and a burst energy release of ∼1041erg. The apparent recurrence time of ≃86 days between the intermediate long bursts from SLX 1737-282 suggests a regime of unstable burning of a thick, pure helium layer slowly accreted from a helium donor star.

Abstract Copyright:

Journal keyword(s): stars: binaries: close - stars: individual: SLX 1737-282 - stars: neutron - X-rays: bursts

Simbad objects: 17

goto Full paper

goto View the reference in ADS

Number of rows : 17

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* V1055 Ori LXB 06 17 07.3 +09 08 13   18.80 18.5     ~ 520 1
2 V* UY Vol LXB 07 48 33.71 -67 45 07.7 16.10 17.00 16.9 16.7 17.05 ~ 582 0
3 4U 0919-54 LXB 09 20 26.4814865475 -55 12 24.507988707 20.40 21.30 21.0     ~ 147 0
4 V* QX Nor LXB 16 12 43.0 -52 25 23           ~ 846 1
5 X Oph X-2 X 17 08 23 -22 48.2           ~ 27 1
6 [KRL2007b] 238 LXB 17 25 25.50 -32 57 17.5     14.50     ~ 41 0
7 1ES 1735-26.9 LXB 17 38 17.12 -26 59 38.6           ~ 152 0
8 2E 1737.5-2817 LXB 17 40 42.84 -28 18 08.5           ~ 72 0
9 NAME Gal Center reg 17 45 40.04 -29 00 28.1           ~ 11992 0
10 X Sgr X-1 LXB 17 47 56.0 -26 33 49           ~ 351 0
11 Granat 1747-312 LXB 17 50 46.862 -31 16 28.86           ~ 102 1
12 [KRL2007b] 291 LXB 17 51 13.49 -30 37 23.4           ~ 233 0
13 [KRL2007b] 304 LXB 18 06 59.8 -29 24 30           ~ 202 0
14 V* V4580 Sgr LXB 18 08 27.54 -36 58 44.3   16.81 16.51     ~ 890 0
15 V* NP Ser LXB 18 16 01.389 -14 02 10.62   18.8       K 606 2
16 X Sgr X-4 LXB 18 23 40.57 -30 21 40.6   19.06 18.81     ~ 918 1
17 2MAXI J1900-248 LXB 19 00 08.65 -24 55 13.7     18.09     ~ 186 0

    Equat.    Gal    SGal    Ecl

To bookmark this query, right click on this link: simbad:objects in 2008A&A...484...43F and select 'bookmark this link' or equivalent in the popup menu


2021.02.25-16:14:32

© Université de Strasbourg/CNRS

    • Contact