BV photometry of Bochum 7 members Virtual Observatory Resource

Authors
  1. Corti M.A.
  2. Orellana R.B.
  3. Bosch G.L.
  4. Published by
    CDS
Abstract

We plan to identify the members of the Bochum 7 association by performing simultaneous astrometric and spectrophotometric analyses, and estimate its distance and evolutionary stage. We used our own visual spectroscopic and UBV photometric data of a 30{deg}x30{deg} region centered at RA=8:44:47.2, DE=-45:58:55.5. This information enabled us to estimate the spectral classification and distance of all stars present in the region. The proper motion was analyzed with data of the UCAC 5 catalog and was used to identify the members of this association. We added JHK data from 2MASS and IRAS catalogs to check for the presence of infrared (IR) excess stars. We found that Bochum 7 is an OB association with at least 27 identified stellar members (l=265.12{deg}, b=-2{deg}) at a distance of ~=5640pc. Its proper motion is pm_RA_cosDE=-4.92+/-0.08mas/yr, pm_DE_=3.26+/-0.08mas/yr. We derived an average heliocentric radial velocity of ~35km/s and were able to confirm the binary nature of the (ALS 1135) system and detect four new binary star candidates. Analysis of data for massive Bo 7 star candidates points towards a young age (<=3x10^6^ years old) for the association, although the presence of a previous episode of star formation remains to be analyzed.

Keywords
  1. open-star-clusters
  2. visible-astronomy
  3. Wide-band photometry
  4. ob-stars
Bibliographic source Bibcode
2018A&A...616A..40C
See also HTML
https://cdsarc.cds.unistra.fr/viz-bin/cat/J/A+A/616/A40
IVOA Identifier IVOID
ivo://CDS.VizieR/J/A+A/616/A40
Document Object Identifer DOI
doi:10.26093/cds/vizier.36160040

Access

Web browser access HTML
https://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/A+A/616/A40
https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/A+A/616/A40
http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/A+A/616/A40
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/A+A/616/A40/table3?
https://vizier.iucaa.in/viz-bin/conesearch/J/A+A/616/A40/table3?
http://vizieridia.saao.ac.za/viz-bin/conesearch/J/A+A/616/A40/table3?

History

2018-08-13T12:52:33Z
Resource record created
2018-08-13T12:52:33Z
Created
2019-11-26T06:31:20Z
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