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Preliminary observations of water masers associated with IRAS4A and IRAS4B

Published online by Cambridge University Press:  03 August 2017

Kevin B. Marvel ,
Mark Claussen  and
Alwyn Wootten
Kevin B. Marvel
Affiliation:
American Astronomical Society, 2000 Florida Avenue, NW, Suite 400, Washington, DC, 20009, USA
Mark Claussen
Affiliation:
National Radio Astronomy Observatory, Array Operations Center, 1003 Lopezville Road, Socorro, NM, 87801 USA
Alwyn Wootten
Affiliation:
National Radio Astronomy Observatory Headquarters, 520 Edgemont Road, Charlottesville, VA, 22903-2475, USA

Abstract

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We present preliminary observations of water masers associated with IRAS4, a pair of young stellar objects in the NGC 1333 star forming region. The masers are quite strong and spatially distinct. Proper motion observations have been obtained from various epochs of observation typically separated by about three weeks. IRAS4A consists of two regions of maser activity separated by about 114 AU along a position angle of 138 degrees. Expansion of about 68 km/s is detected. IRAS4B consists of two linear emission regions separated by about 175 AU on a 150 degree position angle. The linear features are about 15 AU in length and about 2 AU thick. They are expanding away from each other at about 70 km/s.

Type
Part 1. Star Formation
Information
Symposium - International Astronomical Union , Volume 206: Cosmic Masers: From Protostars to Blackholes , 2002 , pp. 63 - 67
Copyright
Copyright © Astronomical Society of the Pacific 2002 

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