Stromgren and BV photometry of potential halo blue horizontal branch field stars

Details Stromgren and BV photometry of potential halo blue horizontal branch field stars Stromgren and BV photometry of potential halo blue horizontal branch field stars

Nov 1988

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1988mnras.235..175f&link_type=abstract

Monthly Notices of the Royal Astronomical Society (ISSN 0035-8711), vol. 235, Nov. 1, 1988, p. 175-181.

Astronomy and Astrophysics

Astronomy

7

Blue Stars, Horizontal Branch Stars, Star Distribution, Stellar Spectrophotometry, Electrophotometry, K Lines, Spectral Line Width

Scientific paper

Strömgren four-colour and broadband BV photoelectric photometry has been obtained for a sample of potential halo blue horizontal branch stars in two high galactic latitude fields. The large majority of the stars observed are classified as blue horizontal branch stars on the basis of two different surface gravity indicators. Measurements of Ca K-line equivalent widths from medium-dispersion spectra of the stars confirm that most are Population II objects. No metal-rich A stars were found beyond a few kpc from the galactic disc in the study of faint blue stars.

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