95GHz methanol maser survey toward GLIMPSE EGOs Virtual Observatory Resource

Authors
  1. Chen X.
  2. Ellingsen S.P.
  3. Shen Z.-Q.
  4. Titmarsh A.
  5. Gan C.-G.
  6. Published by
    CDS
Abstract

We report the results of a systematic survey for 95GHz class I methanol masers toward a new sample of 192 massive young stellar object candidates associated with ongoing outflows (known as extended green objects or EGOs) identified from the Spitzer Galactic Legacy Infrared Mid-Plane Survey Extraordinaire (GLIMPSE) survey. The observations were made with the Australia Telescope National Facility (ATNF) Mopra 22m radio telescope and resulted in the detection of 105 new 95GHz class I methanol masers. For 92 of the sources our observations provide the first identification of a class I maser transition associated with these objects (i.e., they are new class I methanol maser sources). Our survey proves that there is indeed a high detection rate (55%) of class I methanol masers toward EGOs. Comparison of the GLIMPSE point sources associated with EGOs with and without class I methanol maser detections shows that they have similar mid-IR colors, with the majority meeting the color selection criteria -0.6<[5.8]-[8.0]<1.4 and 0.5<[3.6]-[4.5]<4.0. Investigations of the Infrared Array Camera and Multiband Imaging Photometer for Spitzer 24um colors and the associated millimeter dust clump properties (mass and density) of the EGOs for the sub-samples based on the class of methanol masers they are associated with suggest that the stellar mass range associated with class I methanol masers extends to lower masses than for class II methanol masers, or alternatively class I methanol masers may be associated with more than one evolutionary phase during the formation of a high-mass star.

Keywords
  1. infrared-sources
  2. millimeter-astronomy
  3. submillimeter-astronomy
  4. interstellar-masers
  5. interstellar-medium
  6. radio-astronomy
Bibliographic source Bibcode
2011ApJS..196....9C
See also HTML
https://cdsarc.cds.unistra.fr/viz-bin/cat/J/ApJS/196/9
IVOA Identifier IVOID
ivo://CDS.VizieR/J/ApJS/196/9
Document Object Identifer DOI
doi:10.26093/cds/vizier.21960009

Access

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http://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/ApJS/196/9
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http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/ApJS/196/9
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Run SQL-like queries with TAP-enabled clients (e.g., TOPCAT).
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https://vizier.iucaa.in/viz-bin/conesearch/J/ApJS/196/9/table1?
http://vizieridia.saao.ac.za/viz-bin/conesearch/J/ApJS/196/9/table1?

History

2011-12-07T13:21:08Z
Resource record created
2011-12-07T13:21:08Z
Created
2017-10-16T14:57:26Z
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