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Dust Production and Mass Loss in the Galactic Globular Cluster NGC 362
Martha L. Boyer, Iain McDonald, Jacco Th. van Loon +14
We investigate dust production and stellar mass loss in the Galactic globular cluster NGC 362. Due to its close proximity to the Small Magellanic Cloud (SMC), NGC 362 was imaged wi…
Spitzer detection of PAH and silicate features in post-AGB stars and young Planetary Nebulae
L. Cerrigone, J. L. Hora, G. Umana +1
We have observed a small sample of hot post-AGB stars with the InfraRed Array Camera (IRAC) and the InfraRed Spectrograph (IRS) on-board the Spitzer Space Telescope. The stars were…
Spitzer 24 um Images of Planetary Nebulae
Y. -H. Chu, R. A. Gruendl, M. A. Guerrero +9
Spitzer MIPS 24 um images were obtained for 36 Galactic planetary nebulae (PNe) whose central stars are hot white dwarfs (WDs) or pre-WDs with effective temperatures of ~100,000 K…
Spitzer/IRAC Limits to Planetary Companions of Fomalhaut and epsilon Eridani
M. Marengo, K. Stapelfeldt, M. W. Werner +5
Fomalhaut and epsilon Eridani are two young, nearby stars that possess extended debris disks whose structures suggest the presence of perturbing planetary objects. With its high se…
Spatial variations of dust abundances across the Large Magellanic Cloud
Deborah Paradis, William T. Reach, Jean-Philippe Bernard +11
Using the data obtained with the Spitzer Space telescope as part of the Surveying the Agents of a Galaxy's Evolution (SAGE) legacy survey, we have studied the variations of the dus…
Diverse protostellar evolutionary states in the young cluster AFGL961
Jonathan P. Williams, Rita K. Mann, Christopher N. Beaumont +6
We present arcsecond resolution mid-infrared and millimeter observations of the center of the young stellar cluster AFGL961 in the Rosette molecular cloud. Within 0.2 pc of each ot…