Radial Velocities of Six OB Stars

Abstract

We present new results from a radial velocity study of six bright OB stars with little or no prior measurements. One of these, HD 45314, may be a long-period binary, but the velocity variations of this Be star may be related to changes in its circumstellar disk. Significant velocity variations were also found for HD 60848 (possibly related to nonradial pulsations) and HD 61827 (related to wind variations). The other three targets, HD 46150, HD 54879, and HD 206183, are constant velocity objects, but we note that HD 54879 has H$\alpha$ emission that may originate from a binary companion. We illustrate the average red spectrum of each target.

arXiv commentAccepted for publication in PASP July 2007 issue

References in corpus (6)

• The Origin of Massive O-type Field Stars. Part II: Field O stars as runaways
• On the class of Oe stars
• A Spectroscopic Study of Field and Runaway OB Stars
• The Massive Runaway Stars HD 14633 and HD 15137
• Non-LTE Abundances of Magnesium, Aluminum and Sulfur in OB Stars Near the Solar Circle
• The Long Period, Massive Binaries HD 37366 and HD 54662: Potential Targets for Long Baseline Optical Interferometry

Cited by in corpus (12)

• XHIP: An Extended Hipparcos Compilation
• Adaptive Optics Photometry and Astrometry of Binary Stars. III. A Faint Companion Search of O-Star Systems
• Spectroscopic and photometric variability of the O9.5Vp star HD93521
• Intriguing X-ray and optical variations of the gamma Cas analog HD45314
• HD45314: a new gamma Cas analog among Oe stars
• The very slow rotation of the magnetic O9.7V star HD54879
• The $\text{Gaia}$ view of the Cepheus OB2 association
• HST/COS Spectra of the Wind Lines of VFTS 102 and 285
• Detection of anomalous element distribution in the extremely slowly rotating magnetic O9.7 V star HD 54879
• Variability in Optical Spectra of epsilon Orionis
• Spectroscopic variability of two Oe stars
• Irregular emission cycles in the Oe star HD 60848