Simultaneous SiO and H2O maser observations Virtual Observatory Resource

Authors
  1. Kim J.
  2. Cho S.-H.
  3. Kim S.J.
  4. Published by
    CDS
Abstract

We present the results of simultaneous observations of SiO v=1,2, ^29^SiO v=0, J=1-0, and H_2_O 6_16_-5_23_ maser lines toward 152 known stellar H_2_O maser sources using the Yonsei 21m radio telescope of the Korean VLBI Network from 2009 June to 2011 January. Both SiO and H_2_O masers were detected from 62 sources with a detection rate of 40.8%. The SiO-only maser emission without H_2_O maser detection was detected from 27 sources, while the H_2_O-only maser without SiO maser detection was detected from 22 sources. Therefore, the overall SiO maser emission was detected from 89 sources, resulting in a detection rate of 58.6%. We have identified 70 new detections of the SiO maser emission. For both H_2_O and SiO maser detected sources, the peak and integrated antenna temperatures of SiO masers are stronger than those of H_2_O masers in both Mira variables and OH/IR stars and the relative intensity ratios of H_2_O to SiO masers in OH/IR stars are larger than those in Mira variables. In addition, distributions of 152 observed sources were investigated in the IRAS two-color diagram.

Keywords
  1. interstellar-masers
  2. variable-stars
  3. stellar-spectral-types
  4. radio-astronomy
  5. radial-velocity
Bibliographic source Bibcode
2013AJ....145...22K
See also HTML
https://cdsarc.cds.unistra.fr/viz-bin/cat/J/AJ/145/22
IVOA Identifier IVOID
ivo://CDS.VizieR/J/AJ/145/22
Document Object Identifer DOI
doi:10.26093/cds/vizier.51450022

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History

2014-03-07T14:55:52Z
Resource record created
2014-03-07T14:55:52Z
Created
2017-10-18T08:23:45Z
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