Optical & Spitzer photometry in IC 1805 Virtual Observatory Resource

Authors
  1. Sung H.
  2. Bessell M.S.
  3. Chun M.-Y.
  4. Yi J.
  5. Naze Y.
  6. Lim B.
  7. Karimov R.,Rauw G.
  8. Park B.-G.
  9. Hur H.
  10. Published by
    CDS
Abstract

We present deep wide-field optical CCD photometry and mid-infrared Spitzer/IRAC and MIPS 24{mu}m data for about 100000 stars in the young open cluster IC 1805. The members of IC 1805 were selected from their location in the various color-color and color-magnitude diagrams, and the presence of H{alpha} emission, mid-infrared excess emission, and X-ray emission. The reddening law toward IC 1805 is nearly normal (R_V_=3.05+/-0.06). However, the distance modulus of the cluster is estimated to be 11.9+/-0.2mag (d=2.4+/-0.2kpc) from the reddening-free color-magnitude diagrams, which is larger than the distance to the nearby massive star-forming region W3(OH) measured from the radio VLBA astrometry. We also determined the age of IC 1805 ({tau}_MSTO_=3.5Myr). In addition, we critically compared the age and mass scale from two pre-main-sequence evolution models. The initial mass function with a Salpeter-type slope of {Gamma}=-1.3+/-0.2 was obtained and the total mass of IC 1805 was estimated to be about 2700+/-200M_{sun}_. Finally, we found our distance determination to be statistically consistent with the Tycho-Gaia Astrometric Solution Data Release 1, within the errors. The proper motion of the B-type stars shows an elongated distribution along the Galactic plane, which could be explained by some of the B-type stars being formed in small clouds dispersed by previous episodes of star formation or supernova explosions.

Keywords
  1. open-star-clusters
  2. infrared-photometry
  3. visible-astronomy
  4. Wide-band photometry
  5. h-alpha-photometry
  6. young-stellar-objects
Bibliographic source Bibcode
2017ApJS..230....3S
See also HTML
https://cdsarc.cds.unistra.fr/viz-bin/cat/J/ApJS/230/3
IVOA Identifier IVOID
ivo://CDS.VizieR/J/ApJS/230/3
Document Object Identifer DOI
doi:10.26093/cds/vizier.22300003

Access

Web browser access HTML
https://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/ApJS/230/3
https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/ApJS/230/3
http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/ApJS/230/3
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/ApJS/230/3/table2?
https://vizier.iucaa.in/viz-bin/conesearch/J/ApJS/230/3/table2?
http://vizieridia.saao.ac.za/viz-bin/conesearch/J/ApJS/230/3/table2?
IVOA Cone Search SCS
For use with a cone search client (e.g., TOPCAT).
https://vizier.cds.unistra.fr/viz-bin/conesearch/J/ApJS/230/3/table5?
https://vizier.iucaa.in/viz-bin/conesearch/J/ApJS/230/3/table5?
http://vizieridia.saao.ac.za/viz-bin/conesearch/J/ApJS/230/3/table5?
IVOA Cone Search SCS
For use with a cone search client (e.g., TOPCAT).
https://vizier.cds.unistra.fr/viz-bin/conesearch/J/ApJS/230/3/table6?
https://vizier.iucaa.in/viz-bin/conesearch/J/ApJS/230/3/table6?
http://vizieridia.saao.ac.za/viz-bin/conesearch/J/ApJS/230/3/table6?
IVOA Cone Search SCS
For use with a cone search client (e.g., TOPCAT).
https://vizier.cds.unistra.fr/viz-bin/conesearch/J/ApJS/230/3/table8?
https://vizier.iucaa.in/viz-bin/conesearch/J/ApJS/230/3/table8?
http://vizieridia.saao.ac.za/viz-bin/conesearch/J/ApJS/230/3/table8?

History

2017-08-03T07:06:53Z
Resource record created
2017-08-03T07:06:53Z
Created
2018-01-15T14:10:41Z
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