H I bubble around the Wolf-Rayet star HD 156385 and its environs

Journal Article · Mon Oct 31 23:00:00 EST 1988 · Astron. J.; (United States)

DOI:https://doi.org/10.1086/114918· OSTI ID:6439036

Cappa De Nicolau, C E; Niemela, V S; Dubner, G M; Arnal, E M

Based upon a study of the distribution of the interstellar H I 21-cm-line emission around the Wolf Rayet star HD 156385, the presence of a remarkable expanding H I bubble, radio-counterpart of the optical nebula RCW 114, has been discovered which is surrounded by a thick H I shell. Both the H I and optical features display outstandingly similar morphologies, and have been created by the action of the strong stellar wind of the WR star and its massive progenitor. The H I bubble has a radius of 57 pc, an expansion velocity of 10 km/s, and a swept-up H I mass of 6300 solar masses. 33 references.

• Research Organization: Instituto Argentino de Radioastronomia, Villa Elisa (Argentina); CONICET, Instituto de Astronomia y Fisica del Espacio, Buenos Aires Argentina); Instituto Argentino de Radioastronomia, Villa Elisa; Observatorio Astronomico, La Plata (Argentina)
• OSTI ID: 6439036
• Journal Information: Astron. J.; (United States), Journal Name: Astron. J.; (United States) Vol. 96; ISSN ANJOA
• Country of Publication: United States
• Language: English

Related Subjects

640102* -- Astrophysics & Cosmology-- Stars & Quasi-Stellar
Radio & X-Ray Sources
71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
BUBBLES
COSMIC RADIO SOURCES
ELECTROMAGNETIC RADIATION
EXPANSION
H1 REGIONS
MAIN SEQUENCE STARS
MASS
MORPHOLOGY
NEBULAE
RADIATIONS
RADIOWAVE RADIATION
STAR EVOLUTION
STARS
STELLAR ACTIVITY
STELLAR WINDS
WOLF-RAYET STARS