Photometry of dissolving star cluster candidates. The cases of NGC7036 and NGC7772

Abstract

We present CCD UBVI observations obtained in the field of the two previously unstudied dissolving open cluster candidates NGC 7036 and NGC 7772. Our analysis suggests that both the objects are Open Cluster Remnants (OCR). NGC 7036 is an open cluster remnant with a core radius of about 3-4 arcmin. We derive for the first time estimates of its fundamental parameters. We identify 17 likely members which define a group of stars at 1 kpc from the Sun, with a low reddening E$(B-V)\approx 0.1$, and with an age of about 3-4 Gyr. As for NGC 7772, we identify 14 likely members, which define a group of stars with a very low reddening (E$(B-V)\approx 0.03$), 1.5 Gyr old and located about 1.5 kpc from the Sun.

8 pages, 10 figures, accepted for publication in Astronomy & Astrophysics

References in corpus (1)

• NGC 6994 - clearly not a physical stellar ensemble

Cited by in corpus (10)

• Clusters and mirages: cataloguing stellar aggregates in the Milky Way
• Spatial dependence of 2MASS luminosity and mass functions in the old open cluster NGC 188
• The GALAH Survey and Gaia DR2: (Non)existence of five sparse high-latitude open clusters
• Characterization of open cluster remnants
• NTT infrared imaging of star cluster candidates towards the central parts of the Galaxy
• Kinematic parameters and membership probabilities of open clusters in the Bordeaux PM2000 catalogue
• NGC2180: a disrupting open cluster
• Investigating dynamical properties of evolved Galactic open clusters
• NGC 5385, NGC 2664 and Collinder 21: three candidate Open Cluster Remnants
• NGC 1252: a high altitude, metal poor open cluster remnant