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H2O maser emission from bright rimmed globules

Published online by Cambridge University Press:  03 August 2017

Riccardo Valdettaro ,
Francesco Palla ,
Riccardo Cesaroni ,
Leonardo Testi  and
Gianni Tofani
Riccardo Valdettaro
Affiliation:
Osservatorio Astrofisico di Arcetri, L.go E. Fermi, 5, 50125 Firenze, Italy
Francesco Palla
Affiliation:
Osservatorio Astrofisico di Arcetri, L.go E. Fermi, 5, 50125 Firenze, Italy
Riccardo Cesaroni
Affiliation:
Osservatorio Astrofisico di Arcetri, L.go E. Fermi, 5, 50125 Firenze, Italy
Leonardo Testi
Affiliation:
Osservatorio Astrofisico di Arcetri, L.go E. Fermi, 5, 50125 Firenze, Italy
Gianni Tofani
Affiliation:
Osservatorio Astrofisico di Arcetri, L.go E. Fermi, 5, 50125 Firenze, Italy

Abstract

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We report the results of a multi-epoch campaign of water maser observations of Bright Rimmed Globules (BRCs) associated with IRAS point sources. We have observed all of the 44 BRCs listed by Sugitani et al. (1991), visible in the northern hemisphere. With the exception of one globule, IC 1396N, we did not detect water maser emission in any of the targets. This negative result is somewhat surprising, if the suggestion of induced massive star formation in BRCs is correct. In contrast, we believe that newly formed stars inside BRCs tend to be of low luminosity and the occurrence of H2O maser emission is rare, episodic, and highly variable.

Type
Part 1. Star Formation
Information
Symposium - International Astronomical Union , Volume 206: Cosmic Masers: From Protostars to Blackholes , 2002 , pp. 72 - 75
Copyright
Copyright © Astronomical Society of the Pacific 2002 

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