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VLA observations of water maser emission associated with SVS 13

Published online by Cambridge University Press:  03 August 2017

Luis F. Rodríguez ,
Guillem Anglada ,
José M. Torrelles ,
J. Eduardo Mendoza-Torres ,
Aubrey D. Haschick  and
Paul T. P. Ho
Luis F. Rodríguez
Affiliation:
Instituto de Astronomía, UNAM, Campus Morelia, Apdo. Postal 3-72, Morelia, Michoacán 58089, México
Guillem Anglada
Affiliation:
Instituto de Astrofísica de Andalucía, CSIC, Camino Bajo de Huétor 24, E-18008 Granada, Spain and Harvard-Smithsonian Center for Astrophysics, Cambridge, MA 02138, USA
José M. Torrelles
Affiliation:
Institut d'Estudis Espacials de Catalunya (IEEC/CSIC) and Instituto de Ciencias del Espacio (CSIC), Edifici Nexus, c/ Gran Capità 2-4, E-08034 Barcelona, Spain
J. Eduardo Mendoza-Torres
Affiliation:
Instituto Nacional de Astrofísica, Optica y Electrónica, Luis Enrique Erro No. 1, Apdo. Postal 51 y 216, 72840 Tonantzintla, Puebla, México
Aubrey D. Haschick
Affiliation:
MIT Haystack Observatory, Westford, MA 01886, USA
Paul T. P. Ho
Affiliation:
Harvard-Smithsonian Center for Astrophysics, Cambridge, MA 02138, USA

Abstract

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The young stellar object SVS 13 has been proposed as the powering source of the HH 7-11 objects. Recent observations have revealed that in the radio continuum (3.6-cm) the source is a binary separated by about 0.3 in the east-west direction. We present Very Large Array observations, made in the highest angular resolution A configuration, of H2O maser emission toward this source. Our data show that the H2O spots appear to be segregated in two velocity groups: a group with radial velocity similar to that of the ambient cloud (VLSR ⋍ 8 km s−1) that is associated with the western radio source, and a blueshifted (by ∼20 km s−1) velocity group that is associated with the eastern radio source. We discuss the possible implications of this observation.

Type
Part 1. Star Formation
Information
Symposium - International Astronomical Union , Volume 206: Cosmic Masers: From Protostars to Blackholes , 2002 , pp. 59 - 62
Copyright
Copyright © Astronomical Society of the Pacific 2002 

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