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Near infrared studies of the massive X-ray binary 2S 0114+65 |
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| Authors: | NM Ashok RK Manchanda DPK Banerjee S Farrell RK Sood |
| Institution: | aPhysical Research Laboratory, Navrangpura, Ahmedabad 380009, India bTata Institute of Fundamental Research, Mumbai 400005, India cSchool of PEMS, University of New South Wales, Australian Defence Force Academy, Canberra 2600, Australia |
| Abstract: | We present near-infrared spectroscopy of the massive X-ray binary 2S 0114+650. These observations covering the spectral range 1.08–2.35 μm span the region where Paschen and Brackett series recombination lines of hydrogen are expected to be seen, namely, Paβ , Brγ and Br 10–17 lines. The absence of any of these lines in emission supports earlier inferences that the optical component in 2S 0114+650 is unlikely to be a Be star but rather a B type supergiant. Near-IR photometry gives J = 8.78, H = 8.53 and K = 7.96; these values show marginal variations from earlier reported measurements. |
| Keywords: | Infrared Spectra – binaries X-ray – stars Individual (2S 0114+650) – techniques Spectroscopic |
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