Water maser survey of late-type stars Virtual Observatory Resource

Authors
  1. Takaba H.
  2. Iwata T.
  3. Miyaji T.
  4. Deguchi S.
  5. Published by
    CDS
Abstract

This paper presents new results of a water maser survey of late-type stellar objects at 22.235GHz with the Kashima 34-m radio telescope. We have detected 179 out of 643 observed sources, including 32 new detections. The sources were selected in terms of the IRAS flux density and colors of late-type stars, involving optically observable Mira/semi-regular variables, IRC objects, OH/IR sources and proto-planetary nebulae. We found the highest H_2_O detection rate for the type of stars with a thin dust envelope (Mira/semi-regular variables) among other types of sources. This is attributed to the smaller distances to such stars in the sample. The velocity spread of the H_2_O maser profile has an increasing tendency with the IRAS color, though it becomes more difficult to access this color dependence beyond an edge of the transition of the (oxygen-rich) Asymptotic Giant Branch stars to protoplanetary nebulae in the two-color diagram.

Keywords
  1. Astrophysical masers
  2. Radio astronomy
  3. Late-type stars
  4. Radial velocity
Bibliographic source Bibcode
2001PASJ...53..517T
See also HTML
https://cdsarc.cds.unistra.fr/viz-bin/cat/J/PASJ/53/517
IVOA Identifier IVOID
ivo://CDS.VizieR/J/PASJ/53/517
Document Object Identifer DOI

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History

2007-07-06T19:20:32Z
Resource record created
2007-07-06T19:20:32Z
Created
2017-12-12T14:45:13Z
Updated

Contact

Name
CDS support team
Postal Address
CDS, Observatoire de Strasbourg, 11 rue de l'Universite, F-67000 Strasbourg, France
E-Mail
cds-question@unistra.fr