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The Spitzer c2d Survey of Weak-Line T Tauri Stars. III. The Transition from Primordial Disks to Debris Disks
Zahed Wahhaj, Lucas Cieza, Karl R. Stapelfeldt +15
We present 3.6 to 70 μm Spitzer photometry of 154 weak-line T Tauri stars (WTTS) in the Chamaeleon, Lupus, Ophiuchus and Taurus star formation regions, all of which are within 200…
The large-scale disk fraction of brown dwarfs in the Taurus cloud as measured with Spitzer
J. -L. Monin, S. Guieu, C. Pinte +14
Aims. The brown dwarf (BD) formation process has not yet been completely understood. To shed more light on the differences and similarities between star and BD formation processes,…
Mid-Infrared Variability of protostars in IC 1396A
M. Morales-Calderon, J. R. Stauffer, L. Rebull +7
We have used Spitzer/IRAC to conduct a photometric monitoring program of the IC1396A dark globule in order to study the mid-IR (3.6 - 8 micron) variability of the heavily embedded…
Primordial Circumstellar Disks in Binary Systems: Evidence for Reduced Lifetimes
Lucas A. Cieza, Deborah L. Padgett, Lori E. Allen +9
We combine the results from several multiplicity surveys of pre-main-sequence stars located in four nearby star-forming regions with Spitzer data from three different Legacy Projec…
Far-infrared Observations of the Very Low-Luminosity Embedded Source L1521F-IRS in the Taurus Star-Forming Region
Susan Terebey, Michel Fich, Alberto Noriega-Crespo +14
We investigate the environment of the very low-luminosity object L1521F IRS using data from the Taurus Spitzer Legacy Survey. The MIPS 160 micron image shows both extended emission…