NGC 1741 HST photometry Virtual Observatory Resource

Authors
  1. Johnson K.E.
  2. Vacca W.D.
  3. Leitherer C.
  4. Conti P.S.
  5. Lipscy S.J.
  6. Published by
    CDS
Abstract

We use Hubble Space Telescope (HST) Faint Object Camera (FOC) ultraviolet (UV) and WFPC2 optical images in conjunction with UV spectroscopic observations taken with the Goddard High Resolution Spectrograph to examine the star formation history and properties of the interacting galaxy system NGC 1741 in the Hickson Compact Group 31. The high spatial resolution afforded by HST has allowed us to identify a large number of starburst knots, or "superstar clusters" (SSCs), in the starburst regions of this system. Photometry of these SSCs in the UV and optical bands indicates that most of these objects have ages of a few Myr, with a few up to ~100Myr, and masses between 10^4^ and 10^6^M_{sun}_. The estimated age is confirmed by a spectral synthesis analysis of one knot for which we have obtained a UV spectrum. The V-band luminosity function of the SSCs is well represented by a power law {Phi}(L)~L^-{alpha}^ with an index of -1.85, with no evidence of a turnover brighter than the completeness limit. These properties are in good agreement with those found for SSCs in other starburst galaxies. Our results support the suggestion that some of these SSCs may be extremely young globular clusters formed in a relatively recent starburst episode that has been triggered by a merger event.

Keywords
  1. stellar-associations
  2. visible-astronomy
  3. photographic-photometry
  4. ultraviolet-photometry
Bibliographic source Bibcode
1999AJ....117.1708J
See also HTML
https://cdsarc.cds.unistra.fr/viz-bin/cat/J/AJ/117/1708
IVOA Identifier IVOID
ivo://CDS.VizieR/J/AJ/117/1708
Document Object Identifer DOI
doi:10.26093/cds/vizier.51171708

Access

Web browser access HTML
http://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/AJ/117/1708
https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/AJ/117/1708
http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/AJ/117/1708
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).
https://vizier.cds.unistra.fr/viz-bin/conesearch/0?
https://vizier.iucaa.in/viz-bin/conesearch/J/AJ/117/1708/table2?
http://vizieridia.saao.ac.za/viz-bin/conesearch/J/AJ/117/1708/table2?

History

2000-04-13T15:50:01Z
Resource record created
2000-04-13T15:50:01Z
Created
2023-04-06T16:50:32Z
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