An SX Phe Variable Star in the Distant Galactic Halo

Details An SX Phe Variable Star in the Distant Galactic Halo An SX Phe Variable Star in the Distant Galactic Halo

Jun 1995

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1995pasp..107..521b&link_type=abstract

Publications of the Astronomical Society of the Pacific, v.107, p.521

Astronomy and Astrophysics

Astronomy

4

Galaxy: Halo, Stars: Population Ii

Scientific paper

We report the discovery of a pulsating field star with period 0.0607690(1) days, amplitude A_V=0.57 mag, mean magnitude (m_V) = 18.35, and late A or early F spectral type. These characteristics suggest that the star is an SX Phe variable, located approximately 11 kpc away in the Galactic halo. These Population II variables are believed to originate as blue stragglers, and only eight other such field stars, all located in the disk, are known to exist. (SECTION: Stars)

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