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2003ApJ...588.1025W - Astrophys. J., 588, 1025-1038 (2003/May-2)
The remarkable alternating spectra of the Of?p star HD 191612.
WALBORN N.R., HOWARTH I.D., HERRERO A. and LENNON D.J.
Abstract (from CDS):
The Of?p category currently contains only five members: three in the Galaxy and two in the Small Magellanic Cloud. The other two Galactic members also display bizarre and unexplained phenomena; in the case of HD 108, they are strikingly similar to those described here. Because of their relatively high X-ray luminosities, all three Galactic objects have been suggested to have collapsed companions. If the spectral variations of HD 108 and HD 191612 are due to binary interactions, they are likely multiyear, eccentric systems like WR 140 and η Carinae. The axisymmetric shell ejections of HD 148937 could have a similar origin. Alternatively, these stars may be rapid rotators or in an unstable evolutionary transitional stage. Further intensive spectroscopic monitoring is required to reveal their nature.
Abstract Copyright: ∼
Journal keyword(s): Stars: Early-Type - Stars: Emission-Line, Be - Stars: Individual: Henry Draper Number: HD 191612 - Stars: Mass Loss - Stars: Variables: Other
Simbad objects: 15
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