Morphology of candidate intermediate-mass SFRs Virtual Observatory Resource

Authors
  1. Lundquist M.J.
  2. Kobulnicky H.A.
  3. Alexander M.J.
  4. Kerton C.R.
  5. Arvidsson K.
  6. Published by
    CDS
Abstract

We present an all-sky sample of 984 candidate intermediate-mass Galactic star-forming regions that are color selected from the Infrared Astronomical Satellite (IRAS) Point Source Catalog and morphologically classify each object using mid-infrared Wide-field Infrared Survey Explorer (WISE) images. Of the 984 candidates, 616 are probable star-forming regions (62.6%), 128 are filamentary structures (13.0%), 39 are point-like objects of unknown nature (4.0%), and 201 are galaxies (20.4%). We conduct a study of four of these regions, IRAS 00259+5625, IRAS 00420+5530, IRAS 01080+5717, and IRAS 05380+2020, at Galactic latitudes|b|>5{deg} using optical spectroscopy from the Wyoming Infrared Observatory, along with near-infrared photometry from the Two-Micron All Sky Survey, to investigate their stellar content. New optical spectra, color-magnitude diagrams, and color-color diagrams reveal their extinctions, spectrophotometric distances, and the presence of small stellar clusters containing 20-78M_{sun}_ of stars. These low-mass diffuse star clusters contain ~65-250 stars for a typical initial mass function, including one or more mid-B stars as their most massive constituents. Using infrared spectral energy distributions we identify young stellar objects near each region and assign probable masses and evolutionary stages to the protostars. The total infrared luminosity lies in the range 190-960L_{sun}_, consistent with the sum of the luminosities of the individually identified young stellar objects.

Keywords
  1. galaxy-planes
  2. milky-way-galaxy
  3. infrared-sources
  4. galaxy-classification-systems
Bibliographic source Bibcode
2014ApJ...784..111L
See also HTML
https://cdsarc.cds.unistra.fr/viz-bin/cat/J/ApJ/784/111
IVOA Identifier IVOID
ivo://CDS.VizieR/J/ApJ/784/111
Document Object Identifer DOI
doi:10.26093/cds/vizier.17840111

Access

Web browser access HTML
https://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/ApJ/784/111
https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/ApJ/784/111
http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/ApJ/784/111
IVOA Table Access TAP
https://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).
https://vizier.cds.unistra.fr/viz-bin/conesearch/J/ApJ/784/111/table1?
https://vizier.iucaa.in/viz-bin/conesearch/J/ApJ/784/111/table1?
http://vizieridia.saao.ac.za/viz-bin/conesearch/J/ApJ/784/111/table1?

History

2016-08-05T06:45:58Z
Resource record created
2016-08-05T06:45:58Z
Created
2017-10-16T14:58:04Z
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