Astronomy and Astrophysics – Astrophysics
Scientific paper
Jul 2010
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2010a%26a...518l.135m&link_type=abstract
Astronomy and Astrophysics, Volume 518, id.L135
Astronomy and Astrophysics
Astrophysics
20
Circumstellar Matter, Stars: Individual: Β Leo, Infrared: Stars, Stars: Individual: Β Uma, Stars: Individual: Η Corvi
Scientific paper
We present results from the earliest observations of DEBRIS, a Herschel key programme to conduct a volume- and flux-limited survey for debris discs in A-type through M-type stars. PACS images (from chop/nod or scan-mode observations) at 100 and 160 μm are presented toward two A-type stars and one F-type star: β Leo, β UMa and η Corvi. All three stars are known disc hosts. Herschel spatially resolves the dust emission around all three stars (marginally, in the case of β UMa), providing new information about discs as close as 11 pc with sizes comparable to that of the Solar System. We have combined these data with existing flux density measurements of the discs to refine the SEDs and derive estimates of the fractional luminosities, temperatures and radii of the discs.
Herschel is an ESA space observatory with science instruments provided by European-led Principal Investigator consortia and with important participation from NASA.
Bastien Pierre
Biggs Andy
Bouvier Jerome
Butner Harold M.
Churcher Laura
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