M giants at high galactic latitudes: an old metal-rich population?

Details M giants at high galactic latitudes: an old metal-rich population? M giants at high galactic latitudes: an old metal-rich population?

Jan 1995

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1995mnras.272..139s&link_type=abstract

Monthly Notices of the Royal Astronomical Society, Volume 272, Issue 1, pp. 139-149.

Astronomy and Astrophysics

Astronomy

8

Stars, Abundances-Stars, Kinematics-Stars, Late-Type-Galaxy, Kinematics And Dynamics-Galaxy, Stellar Content-Infrared, Stars.

Scientific paper

Spectroscopic and photometric observations are presented for a sample of 227 late-M giants in the extended solar neighbourhood, catalogued by Stephenson using objective prism plates. The kinematics and scaleheight of these stars suggest that they belong to a mixed population, extending from the old thin disc to the thick disc. They show evidence of the differential galactic rotation predicted theoretically. Metallicities have been determined from a comparison of TiO band strengths and infrared colours with model atmospheres for late-type stars, and suggest a mean metallicity close to solar.

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