Astronomy and Astrophysics – Astronomy
Scientific paper
Jul 1998
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1998mnras.297..657c&link_type=abstract
Monthly Notices of the Royal Astronomical Society, Volume 297, Issue 3, pp. 657-666.
Astronomy and Astrophysics
Astronomy
11
Binaries: Close, Stars: Emission-Line, Be, Stars: Individual: A0535+26, Stars: Neutron, Infrared: Stars, X-Rays: Stars
Scientific paper
We present infrared spectroscopy of the Be/X-ray binary HDE 245770/A0535+26 obtained over the period 1992-1995. The spectra show significant variability, reflecting changes in the circumstellar environment during this time. A reduction in the flux observed in the Paschen series lines between 1993 December and 1994 September correlates with a similar reduction in both the strength of Hα and the optical continuum emission, which can be attributed to a reduction in the emission measure of the disc. A turnover between optically thin and thick emission is seen for both Paschen and Brackett series lines, and allows an estimate of the disc density as ~10^12 cm^-3. Echelle spectroscopy reveals strong similarities between the HeI 1.008, 2.058 mum, Hα and Paschen series line profiles, suggesting their formation in a similar (and asymmetric) region of the disc. In contrast, the line profile of HeI 6678A indicates that it is formed at smaller radii than the other transitions.
Clark Simon J.
Coe Malcolm J.
Roche Paul
Steele Iain A.
No associations
LandOfFree
Infrared spectroscopy of the Be/X-ray transient A0535+26 does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Infrared spectroscopy of the Be/X-ray transient A0535+26, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Infrared spectroscopy of the Be/X-ray transient A0535+26 will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-1270633