Research

Cep OB3b

Cep OB3b is one of the largest nearby young clusters, with an age of ~3-4 Myr (Mayne et al. 2007, Littlefair et al. 2010) and an estimated 3000 members (Allen et al. 2012), it is located at a distance of 700pc (Moscadelli et al. 2009). Composed of two sub-clusters with different disk fractions (32% and 50%) and stellar ages, Cep OB3b is a unique laboratory to study the evolution of the accretion properties of young protoplanetary disks. Most of the young sources are located in a cavity with a V band extinction of less than 2.5 magnitudes. Our group has compiled an extensive multi-wavelength database of this interesting young cluster. This database includes photometry from the Visible to the Far-Infrared wavelength regimes, including Spitzer Space Telescope and Herschel Space Observatory imaging, deep X-ray images from the Chandra X-ray Observatory, moderate resolution spectroscopy of ~800 candidate members (349 with Infrared excesses and 460 without Infrared excesses) and high resolution spectroscopy of ~230 candidate members (152 with Infrared excesses and 146 without Infrared excesses). This database gives us a large sample of young stars that are well characterized with spectral types, bolometric luminosities, masses, isochronal ages, rotation rates, X-ray properties and the presence (or lack) of a disk.

Data

X-ray

Visible

Infrared