On the existence of young embedded clusters at high Galactic latitude
arXiv:1705.06748 · doi:10.1093/mnras/stx1258
Abstract
Careful analyses of photometric and star count data available for the nine putative young clusters identified by Camargo et al. (2015, 2016) at high Galactic latitudes reveal that none of the groups contain early-type stars, and most are not significant density enhancements above field level. 2MASS colours for stars in the groups match those of unreddened late-type dwarfs and giants, as expected for contamination by (mostly) thin disk objects. A simulation of one such field using only typical high latitude foreground stars yields a colour-magnitude diagram that is very similar to those constructed by Camargo et al. (2015, 2016) as evidence for their young groups as well as the means of deriving their reddenings and distances. Although some of the fields are coincident with clusters of galaxies, one must conclude that there is no evidence that the putative clusters are extremely young stellar groups.
Accepted for publication (MNRAS)
References in corpus (5)
- High Galactic Latitude Interstellar Neutral Hydrogen Structure and Associated (WMAP) High Frequency Continuum Emission
- Discovery of two embedded clusters with WISE in the high Galactic latitude cloud HRK 81.4-77.8
- New detections of embedded clusters in the Galactic halo
- Extinction in the Star Cluster SAI~113 and Galactic Structure in Carina
- The Usefulness of 2MASS JHKs Photometry for Open Cluster Studies