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Astrophysics

Title: PG 1002+506: a Be Star Apparently at Z Greater Than +10 kpc

Authors: F. A. Ringwald (Penn State), W. R. J. Rolleston (Queen's Univ. Belfast), R. A. Saffer (Villanova), J. R. Thorstensen (Dartmouth)
Abstract: PG 1002+506 is found to be a Be star, one of two so far found by the Palomar-Green survey. Its spectrum is classified as a B5 +/- 1 Ve, with Teff = 14,900 +/- 1200, log g = 4.2 +/- 0.2, and v sin i = 340 +/- 50 km/s. At b = +51 degrees, its height above the Galactic plane would therefore be Z = +10.8 kpc, putting this apparently young, rapidly rotating star well into the Galactic halo. Its heliocentric radial velocity is found to be -2 +/- 15 km/s, consistent with either having been formed in the Galactic disk and subsequently ejected, or having been formed in the halo.
Comments: 7 pages, LaTeX including 1 table and 2 PostScript figures, requires AAS style files and rotate; ApJ, accepted
Subjects: Astrophysics (astro-ph)
Journal reference: Bull.Am.Astron.Soc. 29 (1997) 1384
Cite as: arXiv:astro-ph/9706272v1

Submission history

From: Fred Ringwald [view email]
[v1] Fri, 27 Jun 1997 03:01:51 GMT (30kb)