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Detections of trans-Neptunian ice in protoplanetary disks
M. K. McClure, C. Espaillat, N. Calvet +6
We present Herschel Space Observatory PACS spectra of T Tauri stars, in which we detect amorphous and crystalline water ice features. Using irradiated accretion disk models, we det…
A spectroscopic census in young stellar regions: the Sigma Orionis cluster
Jesús Hernández, Nuria Calvet, Alice Perez +7
We present a spectroscopic survey of the stellar population of the Sigma Orionis cluster. We have obtained spectral types for 340 stars. Spectroscopic data for spectral typing come…
The evolution of accretion in young stellar objects: Strong accretors at 3 - 10 Myr
Laura Ingleby, Nuria Calvet, Jesus Hernandez +4
While the rate of accretion onto T Tauri stars is predicted to decline with age, objects with strong accretion have been detected up to ages of 10 Myr. We analyze a sample of these…
Herschel evidence for disk flattening or gas depletion in transitional disks
J. T. Keane, I. Pascucci, C. Espaillat +6
Transitional disks are protoplanetary disks characterized by reduced near- and mid-infrared emission with respect to full disks. This characteristic spectral energy distribution in…
An Observational Perspective of Transitional Disks
Catherine Espaillat, James Muzerolle, Joan Najita +7
Transitional disks are objects whose inner disk regions have undergone substantial clearing. The Spitzer Space Telescope produced detailed spectral energy distributions (SEDs) of t…
CSI 2264: Simultaneous optical and infrared light curves of young disk-bearing stars in NGC 2264 with CoRoT and Spitzer-- evidence for multiple origins of variability
Ann Marie Cody, John Stauffer, Annie Baglin +42
We present the Coordinated Synoptic Investigation of NGC 2264, a continuous 30-day multi-wavelength photometric monitoring campaign on more than 1000 young cluster members using 16…