Discovery of bipolar OH maser emission from the high-latitude supergiant star HD 101584

Abstract

view Abstract Citations (41) References (37) Co-Reads Similar Papers Volume Content Graphics Metrics Export Citation NASA/ADS Discovery of Bipolar OH Maser Emission from the High-Latitude Supergiant Star HD 101584 te Lintel Hekkert, P. T. L. ; Chapman, J. M. ; Zijlstra, A. A. Abstract The discovery of OH 1667-MHz maser emission from the circumstellar envelope of the F-type supergiant star, HD 101584 (IRAS 11385 - 5517) is reported. The OH spectrum has a total velocity range of 84 km/s and shows two unusually broad emission features. Images obtained show that the OH masers are located in a bipolar outflow. Along the bipolar axis there is a strong velocity gradient which is interpreted as resulting from an interaction between a hot stellar wind and a remnant circumstellar envelope. The presence of high-velocity, bipolar molecular gas in the circumstellar envelope of HD 101584, together with the optical classification, provides strong evidence that the star is a protoplanetary nebula. High-velocity outflows associated with axisymmetric geometries are likely to be a general phenomenon for stars in this short-lived evolutionary stage. Publication: The Astrophysical Journal Pub Date: May 1992 DOI: 10.1086/186363 Bibcode: 1992ApJ...390L..23T Keywords: Hydroxyl Radicals; Interstellar Masers; Stellar Envelopes; Supergiant Stars; F Stars; Protoplanets; Solar System Evolution; Stellar Winds; Astrophysics; MASERS; STARS: CIRCUMSTELLAR MATTER; STARS: SUPERGIANTS full text sources ADS | data products SIMBAD (17)