LMC far-UV HST observations Virtual Observatory Resource

Authors
  1. Almoznino E.
  2. Brosch N.
  3. Shara M.
  4. Zurek D.
  5. Published by
    CDS
Abstract

We present a new analysis of the deepest pure-ultraviolet (UV) observations with the highest angular resolution ever performed. A set of 12 exposures with the Hubble Space Telescope (HST) WFPC2 and F160BW filter obtained in parallel observing mode, which cover ~12arcmin^2^ in the Large Magellanic Cloud (LMC), north of the bar and in the 'general field' region of the LMC, contain stars with far-UV monochromatic magnitudes as faint as 22mag. The 198 detected UV sources represent an accumulated exposure of 2x10^4^s and reveal stars as faint as m_UV_=~20mag. We combine these observations with deep UBVI charge-coupled device (CCD) imaging of the same region reaching as faint as V=~26mag, and reselect probable optical counterparts for the UV sources. After a two-stage search-and-analysis process, we detect robust counterparts for 129 stars. These are mostly upper main-sequence stars, from early B to early A spectral classes, with several F stars. We point out the lack of blue supergiants, which could have been easily detected in our survey. We measure a foreground extinction E(B-V)=~0.08mag by Galactic dust and a surface density of star formation rate twice the average Galactic value. These observations indicate that relatively recent star formation took place even off the bar of the LMC.

Keywords
  1. magellanic-clouds
  2. ultraviolet-astronomy
  3. ccd-photometry
Bibliographic source Bibcode
2005MNRAS.357..645A
See also HTML
https://cdsarc.cds.unistra.fr/viz-bin/cat/J/MNRAS/357/645
IVOA Identifier IVOID
ivo://CDS.VizieR/J/MNRAS/357/645
Document Object Identifer DOI
doi:10.26093/cds/vizier.73570645

Access

Web browser access HTML
http://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/MNRAS/357/645
https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/MNRAS/357/645
http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/MNRAS/357/645
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/MNRAS/357/645/table2?
https://vizier.iucaa.in/viz-bin/conesearch/J/MNRAS/357/645/table2?
http://vizieridia.saao.ac.za/viz-bin/conesearch/J/MNRAS/357/645/table2?

History

2007-06-17T11:32:34Z
Resource record created
2007-06-17T11:32:34Z
Created
2024-06-30T20:17:15Z
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