2011A&A...527A...7S


C.D.S. - SIMBAD4 rel 1.7 - 2020.07.03CEST22:33:36

2011A&A...527A...7S - Astronomy and Astrophysics, volume 527A, 7-7 (2011/3-1)

Finding a 24-day orbital period for the X-ray binary 1A 1118-616.

STAUBERT R., POTTSCHMIDT K., DOROSHENKO V., WILMS J., SUCHY S., ROTHSCHILD R. and SANTANGELO A.

Abstract (from CDS):

We report the first determination of the binary period and orbital ephemeris of the Be X-ray binary containing the pulsar 1A 1118-616 (35 years after the discovery of the source). The orbital period is found to be Porb=24.0±0.4days. The source was observed by RXTE during its last large X-ray outburst in January 2009, which peaked at MJD 54845.4, by taking short observations every few days, covering an elapsed time comparable to the orbital period. Using the phase connection technique, pulse arrival time delays could be measured and an orbital solution determined. The data are consistent with a circular orbit and the time of 90 degrees longitude was found to be Tπ/2=MJD54845.37(10), which is coincident with that of the peak X-ray flux.

Abstract Copyright:

Journal keyword(s): binaries: general - stars: neutron - X-rays: general - X-rays: binaries - X-rays: individual: 1A 1118-616 - ephemerides

Simbad objects: 3

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Number of rows : 3

N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2020
#notes
1 V* V662 Cas HXB 01 18 02.6973905772 +65 17 29.829417242 12.27 11.99 11.14 10.33 9.58 B1Iae 231 0
2 WRAY 15-793 HXB 11 20 57.1736252056 -61 55 00.165172193 12.81 13.06 12.12     O9.5III/Ve 172 0
3 GSC 03588-00834 HXB 21 03 35.7101268891 +45 45 05.568943629   15.34 14.20 13.49 12.75 B0Ve 147 0

    Equat.    Gal    SGal    Ecl

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2020.07.03-22:33:36

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