Detection of the X-ray-heated companion of X1822-371

Details Detection of the X-ray-heated companion of X1822-371 Detection of the X-ray-heated companion of X1822-371

Mar 1997

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1997mnras.285..673h&link_type=abstract

Monthly Notices of the Royal Astronomical Society, Volume 285, Issue 4, pp. 673-682.

Astronomy and Astrophysics

Astronomy

21

Binaries: Eclipsing, Stars: Individual: X1822-371, Stars: Low-Mass, Brown Dwarfs

Scientific paper

We have detected the companion star in X1822-371 from the behaviour of the Hei lambda5876 in absorption around phase 0.5 and find a lower limit for the radial velocity of K_C>225+/-23kms^-1. The irradiation-induced dominant component within the Hei lambda5876 absorption profile is the only detected spectral signature of the companion star. Hα shows a narrow double-peaked emission profile embedded in a wider absorption profile. There is no evidence of any binary motion (i.e., rotational disturbance during eclipse) probably implying a vertically extended region obscuring the inner disc. The Hα emission distribution is centred towards the disc bulge at phase 0.8 rather than towards the compact object. Detection of Fe II lambda6516, in the region of phase 0.8, suggests an `iron-curtain' related to the impact region of the gas stream with supersonic velocities of Mach ~20+/-8(T/10^4K for the absorbing gas.

Affiliated with

Also associated with

No associations

Rating

Detection of the X-ray-heated companion of X1822-371 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 Detection of the X-ray-heated companion of X1822-371, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Detection of the X-ray-heated companion of X1822-371 will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-874706