Velocity and distance of methanol maser sources Virtual Observatory Resource

Authors
  1. Xu Y.
  2. Zheng X.-W.
  3. Jiang D.-R.
  4. Published by
    CDS
Abstract

We present a statistical analysis of 482 6.7GHz methanol maser sources from the available literature, on their maser emission and the characteristics of their associated infrared sources. On the color-color diagram, more than 70% of the objects fall within a very small region (0.57<=[25-12]<=1.30 and 1.30<=[60-12]<=2.50). This suggests that 6.7GHz methanol maser emission occurs only within a very short evolutionary phase during the earliest stage of star formation. The velocity ranges of the masers belong to two main groups: one from 1 to 10km/s, and one from about 11 to 20km/s. These velocity ranges indicate that the masers are probably associated with both disks and outflows. The correlations between the maser and infrared flux densities, and between the maser and infrared luminosities, suggest that far-infrared radiation is a possible pumping mechanism for the masers which most probably originate from some outer molecular envelopes or disks.

Keywords
  1. Astrophysical masers
  2. Radio astronomy
  3. Radial velocity
  4. Stellar distance
Bibliographic source Bibcode
2003ChJAA...3...49X
See also HTML
https://cdsarc.cds.unistra.fr/viz-bin/cat/J/other/ChJAA/3.49
IVOA Identifier IVOID
ivo://CDS.VizieR/J/other/ChJAA/3.49

Access

Web browser access HTML
http://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/other/ChJAA/3.49
https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/other/ChJAA/3.49
http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/other/ChJAA/3.49
IVOA Table Access TAP
http://tapvizier.cds.unistra.fr/TAPVizieR/tap
Run SQL-like queries with TAP-enabled clients (e.g., TOPCAT).
IVOA Cone Search SCS
For use with a cone search client (e.g., TOPCAT).
http://vizier.cds.unistra.fr/viz-bin/conesearch/J/other/ChJAA/3.49/table1?
https://vizier.iucaa.in/viz-bin/conesearch/J/other/ChJAA/3.49/table1?
http://vizieridia.saao.ac.za/viz-bin/conesearch/J/other/ChJAA/3.49/table1?

History

2006-09-10T14:48:33Z
Resource record created
2006-09-10T14:48:33Z
Created
2012-11-13T13:18:13Z
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