HD 105262, A Newly-Discovered HR 4049 Star with a Large Proper Motion

Details HD 105262, A Newly-Discovered HR 4049 Star with a Large Proper Motion HD 105262, A Newly-Discovered HR 4049 Star with a Large Proper Motion

Oct 1996

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1996pasp..108..844a&link_type=abstract

Publications of the Astronomical Society of the Pacific, v.108, p.844

Astronomy and Astrophysics

Astronomy

Stars: Pre-Main Sequence, Stars: Individual: Hd 105262

Scientific paper

HD 105262 has a spectrum like that of HR 4049 in having Balmer liens as in a Ib supergiant but very weak lines due to He I, Ca II, Si II, Ti II, fe I, Fe II, and Mg II. It has a published proper motion of 0.057" +/- 0.011" yr^-1. If the star had the luminosity of a Ib supergiant, its space motion would be several times the escape velocity from the Galaxy. HD 105262 does not have the spectral appearance of a horizontal-branch or post AGB star. The most likely explanation for the spectrum is the model proposed for HR 4049 by Lamers et al. (1986), Waelkens et al. (1987), and Lambert et al. (1988), namely a low-mass proto-planetary nebula star in which the narrow Balmer lines are formed in an extended atmosphere. (SECTION: Stars)

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