Field giants - Selection efficiency from photometry and metallicity gradient in the galactic bulge

Details Field giants - Selection efficiency from photometry and metallicity gradient in the galactic bulge Field giants - Selection efficiency from photometry and metallicity gradient in the galactic bulge

Mar 1985

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1985a%26a...144..327s&link_type=abstract

Astronomy and Astrophysics (ISSN 0004-6361), vol. 144, no. 2, March 1985, p. 327-334. Research supported by the Swiss National S

Astronomy and Astrophysics

Astrophysics

Galactic Bulge, Giant Stars, Metallicity, Milky Way Galaxy, Star Distribution, Stellar Composition, Stellar Spectrophotometry, Broadband, Calibrating, Galactic Structure, Late Stars, Stellar Color, Stellar Magnitude

Scientific paper

Spectroscopic observations of 29 field giant stars covering a wide range of metal abundance are presented (-2.5< [M/H]*sun <0.1). Using these stars for the physical calibration of the RGU broadband colours, we derive the metallicity gradient in a field of the inner bulge (SA 133, l=6.°5 , b = l0.°3) with the help of photographic RGUBV photometry of 150 K-type giants. Furthermore we discuss briefly the role of broadband magnitude colour surveys for the search of late type field giants.

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