Astronomy and Astrophysics – Astrophysics
Scientific paper
May 1976
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1976apj...206l..71p&link_type=abstract
Astrophysical Journal, vol. 206, May 15, 1976, pt. 2, p. L71, L72.
Astronomy and Astrophysics
Astrophysics
12
Binary Stars, Stellar Spectrophotometry, Ultraviolet Spectra, White Dwarf Stars, Astronomical Photography, Early Stars, Skylab Program
Scientific paper
The letter reports the discovery of a cool star with excess brightness in the vacuum ultraviolet on an objective-prism photograph obtained during the second Skylab mission. This star, HD 149499, is of type K0 V and has a companion with an apparent magnitude of about 11.8; the relatively flat UV spectrum observed at the position of HD 149499 is characteristic of a 10th or 11th magnitude unreddened O- or early B-type star. It is shown that the excess VUV brightness is due to the companion, HD 149499B, which probably lies in the region of the H-R diagram occupied by the hot white dwarfs. Inspection of white dwarf lists indicates that this star is the sixth or seventh brightest white dwarf known. A maximum orbital motion of 0.025 arcsec/yr is estimated along with a period of just under 500 yr.
Benedict George F.
Henize Karl G.
Laget Michel
Parsons Sidney B.
Wray James D.
No associations
LandOfFree
SKYLAB ultraviolet stellar spectra - A new white dwarf, HD 149499 B 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 SKYLAB ultraviolet stellar spectra - A new white dwarf, HD 149499 B, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and SKYLAB ultraviolet stellar spectra - A new white dwarf, HD 149499 B will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-1795815