The Bright DAO White Dwarf Feige 55: A New Double-Degenerate System

Details The Bright DAO White Dwarf Feige 55: A New Double-Degenerate System The Bright DAO White Dwarf Feige 55: A New Double-Degenerate System

Mar 1995

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1995aas...186.4702h&link_type=abstract

American Astronomical Society, 186th AAS Meeting, #47.02; Bulletin of the American Astronomical Society, Vol. 27, p.877

Astronomy and Astrophysics

Astronomy

1

Scientific paper

Recent optical and IUE spectra of the bright DAO white dwarf Feige 55 reveal large Doppler shifts due to orbital motion. These Doppler shifts have a period of 1.46 days with a semi-amplitude of 87 km/s. There is no photometric signature of any companion; J and K band photometry place an upper limit of approximately 0.1 solar masses on the mass of any main sequence companion. From the lower limit we derive for the companion, we conclude that the unseen component is a cooler, less luminous, degenerate star. The status of Feige 55 as a double-degenerate system has important implications for the recent suggestion by Bergeron et al. (1994), that low mass DAO stars are primarily the product of post-EHB evolution.

Affiliated with

Also associated with

No associations

Rating

The Bright DAO White Dwarf Feige 55: A New Double-Degenerate System 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 The Bright DAO White Dwarf Feige 55: A New Double-Degenerate System, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and The Bright DAO White Dwarf Feige 55: A New Double-Degenerate System will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-882672