Young star clusters 2nd Galactic quadrant Virtual Observatory Resource

Authors
  1. Molina Lera J.A.
  2. Baume G.
  3. Gamen R.
  4. Published by
    CDS
Abstract

Galactic spiral arms are traced using young objects as giant molecular clouds, HII regions, OB stars, or young open/embedded clusters. To improve the knowledge of the Galactic structure in the second quadrant we selected, from more than 200 open clusters covered by the SDSS, a sample of 10 young stellar clusters to conduct a spectrophotometric study. Photometric data were provided by SDSS and APASS in the optic bands and by 2MASS and WISE in the infrared. Spectroscopic information was obtained from observations acquired with GMOS/GEMINI complemented with data from the literature. For six of the 10 clusters, distances were also obtained with our astrometric Gaia data analysis. To perform all tasks we used a suite of tools developed by us. Our results show that these open clusters are distributed along three spiral arms, covering distances from 1.8 to 8.0kpc. We confirm, using our novel spectroscopic data, our previews photometric estimations regarding the Galactic location of the cluster Teutsch 45. We found that it is located beyond the 'Outer Arm' and probably belong to the more distant 'New Arm' extending its trace almost to the anticentre. Hence, it was possible to get a better picture of the structure of the outer regions of the Galaxy. For clusters with pre-main-sequence populations we also found traces of coeval star formation processes. Regarding spectroscopic data and most massive members of the clusters, we discovered seven B-type stars, all earlier than B4 and we also confirmed the spectral classification of one O8-8.5 type star.

Keywords
  1. early-type-stars
  2. infrared-photometry
  3. visible-astronomy
  4. Wide-band photometry
  5. astrometry
  6. stellar-spectral-types
  7. open-star-clusters
  8. spectroscopy
Bibliographic source Bibcode
2019MNRAS.488.2158M
See also HTML
https://cdsarc.cds.unistra.fr/viz-bin/cat/J/MNRAS/488/2158
IVOA Identifier IVOID
ivo://CDS.VizieR/J/MNRAS/488/2158

Access

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http://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/MNRAS/488/2158
https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/MNRAS/488/2158
http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/MNRAS/488/2158
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https://vizier.iucaa.in/viz-bin/conesearch/J/MNRAS/488/2158/table2?
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http://vizier.cds.unistra.fr/viz-bin/conesearch/J/MNRAS/488/2158/table3?
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http://vizier.cds.unistra.fr/viz-bin/conesearch/J/MNRAS/488/2158/phbd2003?
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http://vizier.cds.unistra.fr/viz-bin/conesearch/J/MNRAS/488/2158/phngc654?
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http://vizier.cds.unistra.fr/viz-bin/conesearch/J/MNRAS/488/2158/phngc659?
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History

2023-02-03T14:12:14Z
Resource record created
2023-02-03T14:12:14Z
Created
2024-08-19T20:19:30Z
Updated

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