39 citations · 93 across the 8 of their papers we have counts for
8 papers
NIR spectral classification of the companion in the gamma-ray binary HESS J1832-093 as an O6 V star
Brian van Soelen, Pol Bordas, Ignacio Negueruela +3
HESS J1832-093 is a member of the rare class of gamma-ray binaries, as recently confirmed by the detection of orbitally modulated X-ray and gamma-ray emission with a period of ~86…
Web-based telluric correction made in Spain: spectral fitting of Vega-type telluric standards
D. de la Fuente, A. Marco, L. R. Patrick +7
Infrared spectroscopic observations from the ground must be corrected from telluric contamination to make them ready for scientific analyses. However, telluric correction is often…
A newly identified Luminous Blue Variable in the galactic starburst cluster Westerlund 1
J. Simon Clark, Ignacio Negueruela
We present observations of the massive transitional star W243 in Westerlund 1. We find an apparent spectral type of early-mid A from our data, in contrast to an earlier classificat…
Unveiling the nature of the 321s Orbital Period X-ray source RX J0806.3+1527
GianLuca Israel, Luigi Stella, Stefano Covino +5
A nearly simultaneous X-ray/optical (Chandra and VLT) observational campaign of RX J0806.3+1527 has been carried out during November 2001. These observations allowed us to phase th…
A hidden population of Wolf-Rayet stars in the massive galactic cluster Westerlund 1
J. Simon Clark, Ignacio Negueruela
We report the discovery of a hitherto undetected population of Wolf-Rayet stars in the young galactic open cluster Westerlund 1. Optical spectroscopy of the cluster identified 11 s…
The identification of the optical/IR counterpart of the 29.5-s transient X-ray pulsar GS 1843+009
GianLuca Israel, Ignacio Negueruela, Sergio Campana +7
We report on the identification of the optical/IR counterpart of the 29.5-s transient X-ray pulsar GS 1843+009. We re-analysed an archival ROSAT HRI observation of GS 1843+009, obt…