Embedded Clusters in Molecular Clouds

摘要: ▪ Abstract Stellar clusters are born embedded within giant molecular clouds (GMCs) and during their formation early evolution often only visible at infrared wavelengths, being heavily obscured by dust. Over the past 15 years advances in detection capabilities have enabled first systematic studies of galactic clouds. In this article we review current state empirical knowledge concerning these extremely young protocluster systems. From a survey literature compile extensive catalog clusters. We use to construct mass function estimate birthrate for ∼2 kpc sun. find that cluster exceeds open an order magnitude or more indicating high infant mortality rate Less than 4–7% survive emergence from become bound Pleiades age. Th...