A spectroscopic analysis of three supergiants

Details A spectroscopic analysis of three supergiants A spectroscopic analysis of three supergiants

Apr 1989

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1989mnras.237.1085g&link_type=abstract

Monthly Notices of the Royal Astronomical Society (ISSN 0035-8711), vol. 237, April 15, 1989, p. 1085-1097.

Astronomy and Astrophysics

Astronomy

13

Dwarf Stars, G Stars, K Stars, Stellar Spectrophotometry, Supergiant Stars, Abundance, Astronomical Spectroscopy, Atmospheric Models, Binary Stars, H Alpha Line, Radial Velocity, Spectral Line Width, Stellar Orbits

Scientific paper

A spectroscopic analysis based on high S-SNR high-dispersion spectra is presented for four stars suspected to be G or K supergiants lying out of the galactic plane or having peculiar high velocities. This analysis shows that three of them (HD 45829, HD 63700, and HD 68752) are likely to be normal supergiants, though closer than formerly considered; the remaining star (HD 75289) is a metal-rich dwarf, erroneously classified as a supergiant. All stars show variable radial velocities; they are likely to be spectroscopic binaries. A preliminary orbit is obtained for HD 63700.

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