Serendipitous discovery of a distant Galactic RR Lyrae star in front of the Virgo elliptical NGC 4472

Details Serendipitous discovery of a distant Galactic RR Lyrae star in front of the Virgo elliptical NGC 4472 Serendipitous discovery of a distant Galactic RR Lyrae star in front of the Virgo elliptical NGC 4472

Nov 1989

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1989aj.....98.1648c&link_type=abstract

Astronomical Journal (ISSN 0004-6256), vol. 98, Nov. 1989, p. 1648-1651.

Astronomy and Astrophysics

Astronomy

7

Charge Coupled Devices, Elliptical Galaxies, Lyra Constellation, Variable Stars, Virgo Galactic Cluster, Astronomical Photometry, Galactic Nuclei, Milky Way Galaxy, Planetary Nebulae, Sky Surveys (Astronomy)

Scientific paper

The discovery of a new ab-type RR Lyrae variable, projected in front of the giant elliptical galaxy NGC 4472 in the Virgo Cluster, is reported. CCD photometry of the star shows it has a period of 0.6661 day, a mean V magnitude of 19.23, and a V amplitude of 0.40 mg. These properties place the star far above the Galactic plane and about 50 kpc from the Galactic center, making it the field halo star with the largest well-established distance now known.

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