RADIAL VELOCITIES OF GALACTIC O-TYPE STARS. I. SHORT-TERM CONSTANT VELOCITY STARS

Journal Article · Tue Nov 15 00:00:00 EST 2011 · Astronomical Journal (New York, N.Y. Online)

DOI:https://doi.org/10.1088/0004-6256/142/5/146· OSTI ID:21582804

Williams, S J; Gies, D R ^[1]; Hillwig, T C ^[2]; McSwain, M V ^[3]; Huang, W ^[4]

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1. Center for High Angular Resolution Astronomy and Department of Physics and Astronomy, Georgia State University, Atlanta, GA 30302-4106 (United States)
2. Department of Physics and Astronomy, Valparaiso University, Valparaiso, IN 46383 (United States)
3. Department of Physics, Lehigh University, Bethlehem, PA 18015 (United States)
4. Department of Astronomy, University of Washington, Seattle, WA 98195-1580 (United States)

We present radial velocities for 18 Galactic O-type stars. These stars display small radial velocity scatter over timescales of one to two weeks. Some of them are long-period binaries while others are probably single stars. By fitting model spectra to our observed spectra we obtain estimates for effective temperature, log g, rotational velocity, and average radial velocity for each target.

• OSTI ID: 21582804
• Journal Information: Astronomical Journal (New York, N.Y. Online), Vol. 142, Issue 5; Other Information: DOI: 10.1088/0004-6256/142/5/146; ISSN 1538-3881
• Country of Publication: United States
• Language: English

Related Subjects

79 ASTROPHYSICS
COSMOLOGY AND ASTRONOMY
ASTROPHYSICS
RADIAL VELOCITY
SPECTRA
STAR EVOLUTION
STARS
EVOLUTION
PHYSICS
VELOCITY