VizieR Online Data Catalog: IC 4996 Vilnius phot. and Gaia DR2 astrometry (Straizys+, 2019)
Abstract
Table 1 contains the results of photoelectric photometry of 76 stars down to V=12.5mag obtained at the Maidanak Observatory in the Vilnius seven-color system in a 1x1 deg area centered on the open cluster IC 4996. The identification numbers, equatorial coordinates J2000, V magnitudes, six color indices in the Vilnius system, and the photometric spectral types are given. The identification numbers have the prefix AK, the asterisks at star numbers designate the stars common with Table2. The coordinates are from PPMXL catalog (Roeser et al. 2010AJ....139.2440R, Cat.I/317).
Table 2 contains the results of CCD photometry of 1337 stars down to V=18.8mag in the Vilnius system in 13x13 arcmin area centered on the cluster IC 4996 observed with the VATT 1.8m telescope. The same data as in Table 1 are given. Table 4 contains the list of probable cluster members, identified in this investigation. The identification numbers, equatorial coordinates, spectral types, extinction values in the V band and dereddened V magnitudes are given. The bolometric corrections and effective temperatures of stars were taken according to their spectral type from Straizys (1992, Multicolor Stellar Photometry, http://www.itpa.lt/MulticolorStellarPhotometry), the luminosities (in the solar units) are calculated in this investigation. The proper motions are taken from Gaia DR2, the distances from Bailer-Jones et. al (2018, Cat. I/347). The membership probabilities were determined in this investigation. Table 5 contains the list of probable members of Cyg OB1 association. The star names, equatorial coordinates, V magnitudes, MK spectral types, proper motions and distances are given. (4 data files).- Publication:
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VizieR Online Data Catalog
- Pub Date:
- January 2019
- DOI:
- 10.26093/cds/vizier.36230022
- Bibcode:
- 2019yCat..36230022S
- Keywords:
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- Clusters: open;
- Photometry: Vilnius