YSOs in N63 and N180 Virtual Observatory Resource

Authors
  1. Caulet A.
  2. Gruendl R.A.
  3. Chu Y.-H.
  4. Published by
    CDS
Abstract

We used Spitzer infrared observations to find the young stars of two HII regions in the Large Magellanic Cloud, N63 and N180. The young stellar object (YSO) candidates were identified in each nebula by means of color-color, color-magnitude diagrams, and the shapes of their spectral energy distributions (SEDs). The most luminous YSOs are found near the ionization fronts within strong 8um emission clumps. Most YSOs, less luminous, are seen in projection inside the HII regions. HST images show several Class I stars that have emerged along the borders of the HII regions; other YSOs are embedded in cometary clouds. The most luminous YSO of N63 is connected to a string of pointlike sources. Its SED can be modeled by a central source of stellar mass M_*_ between 7 and 11M_{sun}_, with a circumstellar disk of outer radius R_d_ of ~55AU, and an envelope of moderate accretion rate, M_env_ of ~2x10^-5^M_{sun}_/yr. N180 is experiencing a phase of star formation more intense than N63, attested by the properties of its most luminous YSO: M_*_ of 25M_{sun}_, R_d_ of ~200AU, and M_env_ of ~1.5x10^-3^M_{sun}_/yr. The modes of triggered star formation in N63 and N180 appear similar to those seen in Galactic HII regions.

Keywords
  1. young-stellar-objects
  2. infrared-photometry
  3. magellanic-clouds
  4. h-ii-regions
Bibliographic source Bibcode
2008ApJ...678..200C
See also HTML
https://cdsarc.cds.unistra.fr/viz-bin/cat/J/ApJ/678/200
IVOA Identifier IVOID
ivo://CDS.VizieR/J/ApJ/678/200
Document Object Identifer DOI
doi:10.26093/cds/vizier.16780200

Access

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http://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/ApJ/678/200
https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/ApJ/678/200
http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/ApJ/678/200
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http://vizier.cds.unistra.fr/viz-bin/conesearch/J/ApJ/678/200/table3?
https://vizier.iucaa.in/viz-bin/conesearch/J/ApJ/678/200/table3?
http://vizieridia.saao.ac.za/viz-bin/conesearch/J/ApJ/678/200/table3?
IVOA Cone Search SCS
For use with a cone search client (e.g., TOPCAT).
http://vizier.cds.unistra.fr/viz-bin/conesearch/J/ApJ/678/200/YSOs?
https://vizier.iucaa.in/viz-bin/conesearch/J/ApJ/678/200/YSOs?
http://vizieridia.saao.ac.za/viz-bin/conesearch/J/ApJ/678/200/YSOs?

History

2010-09-29T11:24:39Z
Resource record created
2010-09-29T11:24:39Z
Created
2017-06-30T05:47:52Z
Updated

Contact

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CDS support team
Postal Address
CDS, Observatoire de Strasbourg, 11 rue de l'Universite, F-67000 Strasbourg, France
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cds-question@unistra.fr