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Searching for Cool Dust in the Mid-to-Far Infrared: the Mass Loss Histories of The Hypergiants Cep, VY CMa, IRC+10420, and Cas
Dinesh Shenoy, Roberta M. Humphreys, Terry Jay Jones +6
We present mid- and far- IR imaging of four famous hypergiant stars: the red supergiants Cep and VY CMa, and the warm hypergiants IRC +10420 and Cas. Our 11 to 37 m SOFI…
IRTF/SPEX Observations of the Unusual Kepler Lightcurve System KIC8462852
C. M. Lisse, M. L. Sitko, M. Marengo
We have utilized the NASA IRTF 3m SpeX instrument's high resolution spectral mode (Rayner et al. 2003) to observe and characterize the near-infrared flux emanating from the unusual…
KIC 8462852 - The Infrared Flux
Massimo Marengo, Alan Hulsebus, Sarah Willis
We analyzed the warm Spitzer/IRAC data of KIC 8462852. We found no evidence of infrared excess at 3.6 micron and a small excess of 0.43 +/- 0.18 mJy at 4.5 micron, below the 3 sigm…
Evolution of the dust in V4332 Sagittarii
Dipankar. P. K. Banerjee, Joseph A. Nuth, Karl A. Misselt +6
An eruptive nova-like event took place in 1994 in the stellar-merger candidate V4332 Sgr. Following the eruption, dust consisting of refractory silicate rich dust grains containing…
A Spitzer/IRAC Characterization of Galactic AGB and RSG Stars
Megan Reiter, Massimo Marengo, Joseph L. Hora +1
We present new Spitzer/IRAC observations of 55 dusty Long Period Variables (LPVs, 48 AGB and 6 RSG stars) in the Galaxy that have different chemistry, variability type, and mass-lo…