Confirmation of a moving component in the H-alpha emission line of LSI+61303

Details Confirmation of a moving component in the H-alpha emission line of LSI+61303 Confirmation of a moving component in the H-alpha emission line of LSI+61303

2000-05-20

arxiv.org/abs/astro-ph/0005416v1

Astronomy and Astrophysics

Astrophysics

5 pages, 2 figures, 1 table; to appear in IAU Coll.175, ASP Conf.Series

Scientific paper

We report our attempts to detect and confirm a narrow moving component in the H-alpha emission line of the radio emitting Be/X-ray binary LSI+61 303 (V615 Cas, GT0236+610). The existence of this spectral feature was already suspected in the past. As a result, we find that this component does exist and that its radial velocity varies in agreement with the radio period of the system. We interpret it tentatively as due to a denser region, or bulge, orbiting near the outer edge of the H-alpha emitting disk.

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