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Silicon in the dust formation zone of IRC +10216 as observed with PACS and SPIRE on board Herschel
L. Decin, J. Cernicharo, M. J. Barlow +36
The interstellar medium is enriched primarily by matter ejected from evolved low and intermediate mass stars. The outflows from these stars create a circumstellar envelope in which…
The β Pictoris disk imaged by Herschel PACS and SPIRE
B. Vandenbussche, B. Sibthorpe, B. Acke +40
We obtained Herschel PACS and SPIRE images of the thermal emission of the debris disk around the A5V star β Pic. The disk is well resolved in the PACS filters at 70, 100, and 160 μ…
PACS and SPIRE Spectroscopy of the Red Supergiant VY CMa
P. Royer, L. Decin, R. Wesson +34
With a luminosity > 10^5 Lsun and a mass-loss rate of about 2.10-4 Msun/yr, the red supergiant VY CMa truly is a spectacular object. Because of its extreme evolutionary state, it c…
The detached dust shells of AQ And, U Ant, and TT Cyg
F. Kerschbaum, D. Ladjal, R. Ottensamer +14
Detached circumstellar dust shells are detected around three carbon variables using Herschel-PACS. Two of them are already known on the basis of their thermal CO emission and two a…
Herschel PACS and SPIRE imaging of CW Leo
D. Ladjal, M. J. Barlow, M. A. T. Groenewegen +25
Herschel PACS and SPIRE images have been obtained over a 30'x30' area around the well-known carbon star CW Leo (IRC +10 216). An extended structure is found in an incomplete arc of…
Determining the forsterite abundance of the dust around Asymptotic Giant Branch stars
B. L. de Vries, M. Min, L. B. F. M. Waters +2
Aims. We present a diagnostic tool to determine the abundance of the crystalline silicate forsterite in AGB stars surrounded by a thick shell of silicate dust. Using six infrared s…