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Masers as probes of proto-planetary discs

Published online by Cambridge University Press:  26 May 2016

A.M.S. Richards ,
R. J. Cohen ,
M. Crocker ,
E. E. Lekht ,
V. Samodourov ,
I. I. Berulis ,
A. Lobanov  and
L. Moscadelli
A.M.S. Richards
Affiliation:
JBO, University of Manchester, Cheshire, SK11 9DL. UK
R. J. Cohen
Affiliation:
JBO, University of Manchester, Cheshire, SK11 9DL. UK
M. Crocker
Affiliation:
JBO, University of Manchester, Cheshire, SK11 9DL. UK
E. E. Lekht
Affiliation:
INAOEP, Apartado Postal 51 y 216, 72000, Puebla, Pue. Mexico
V. Samodourov
Affiliation:
LPI, 4/32 Profsoyuznaya St., Moscow, 117810, Russia
I. I. Berulis
Affiliation:
LPI, 4/32 Profsoyuznaya St., Moscow, 117810, Russia
A. Lobanov
Affiliation:
MPIfRA, Auf dem Högel 69, D-53121 Bonn, Germany
L. Moscadelli
Affiliation:
Stazione Astronomica, Strada 54, 09012 Capoterra (CA), Italy

Abstract

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Water maser emission from star forming regions has been monitored for several decades using the Puschino radio telescope, showing radial velocity variations consistent with material in Keplerian orbit around protostars. MERLIN and the EVN are now being used to image the 22 GHz emission on au scales and measure proper motions. This will distinguish discs from outflows, and provide an estimate of the central mass and possibly orbiting condensations.

Type
Part IV: Protoplanetary and β Pic disks
Information
Symposium - International Astronomical Union , Volume 202: Planetary Systems in the Universe – Observation, Formation and Evolution , 2004 , pp. 362 - 364
Copyright
Copyright © Astronomical Society of the Pacific 2004 

References

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