2009ApJ...698..514A


C.D.S. - SIMBAD4 rel 1.7 - 2020.08.09CEST01:54:28

2009ApJ...698..514A - Astrophys. J., 698, 514-518 (2009/June-2)

The orbits of the gamma-ray binaries LS I +61 303 and LS 5039.

ARAGONA C., McSWAIN M.V., GRUNDSTROM E.D., MARSH A.N., ROETTENBACHER R.M., HESSLER K.M., BOYAJIAN T.S. and RAY P.S.

Abstract (from CDS):

LS I +61 303 and LS 5039 are two of only a handful of known high-mass X-ray binaries (HMXBs) that exhibit very high energy emission in the MeV-TeV range, and these "γ-ray binaries" are of renewed interest due to the recent launch of the Fermi Gamma-ray Space Telescope. Here we present new radial velocities of both systems based on recent red and blue optical spectra. Both systems have somewhat discrepant orbital solutions available in the literature, and our new measurements result in improved orbital elements and resolve the disagreements. The improved geometry of each orbit will aid in studies of the high-energy emission region near each source.

Abstract Copyright:

Journal keyword(s): binaries: spectroscopic - stars: individual (LS 5039, LS I +61 303)

VizieR on-line data: <Available at CDS (J/ApJ/698/514): table1.dat>

Simbad objects: 5

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Number of rows : 5

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 LS I +61 303 HXB 02 40 31.6641883136 +61 13 45.591138110 11.27 11.61 10.75 10.19 9.55 B0Ve 762 2
2 HD 259440 HXB 06 32 59.2566624297 +05 48 01.162565528 9.17 9.58 9.12     B0pe 187 0
3 CPD-63 2495 HXB 13 02 47.6541729595 -63 50 08.625922862 10.34 10.72 9.98 10.03   O9.5Ve 675 1
4 V* V479 Sct HXB 18 26 15.0561532140 -14 50 54.249464136 12.02 12.23 11.27 11.04   ON6V((f))z 493 2
5 HD 226868 HXB 19 58 21.6758193269 +35 12 05.782512305 9.38 9.72 8.91 8.42   O9.7Iabpvar 3934 0

    Equat.    Gal    SGal    Ecl

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2020.08.09-01:54:28

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