Globulettes in four HII regions Virtual Observatory Resource

Authors
  1. Gahm G.F.
  2. Grenman T.
  3. Fredriksson S.
  4. Kristen H.
  5. Published by
    CDS
Abstract

Some HII regions surrounding young stellar clusters contain tiny dusty clouds, which on photos look like dark spots or teardrops against a background of nebular emission. From our collection of H{alpha} images of 10 HII regions gathered at the Nordic Optical Telescope, we found 173 such clouds, which we call "globulettes", since they are much smaller than normal globules and form a distinct class of objects. Many globulettes are quite isolated and located far from the molecular shells and elephant trunks associated with the regions. Others are attached to the trunks (or shells), suggesting that globulettes may form as a consequence of erosion of these larger structures. None of our objects appear to contain stellar objects. The globulettes were measured for position, dimension, and orientation, and we find that most objects are smaller than 10kAU.

Keywords
  1. h-ii-regions
  2. interstellar-clouds
  3. galaxy-classification-systems
Bibliographic source Bibcode
2007AJ....133.1795G
See also HTML
https://cdsarc.cds.unistra.fr/viz-bin/cat/J/AJ/133/1795
IVOA Identifier IVOID
ivo://CDS.VizieR/J/AJ/133/1795
Document Object Identifer DOI
doi:10.26093/cds/vizier.51331795

Access

Web browser access HTML
http://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/AJ/133/1795
https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/AJ/133/1795
http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/AJ/133/1795
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/AJ/133/1795/table2?
https://vizier.iucaa.in/viz-bin/conesearch/J/AJ/133/1795/table2?
http://vizieridia.saao.ac.za/viz-bin/conesearch/J/AJ/133/1795/table2?

History

2009-06-21T15:17:07Z
Resource record created
2009-06-21T15:17:07Z
Created
2017-10-03T05:12:50Z
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