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A background galaxy in the field of the beta Pictoris debris disk
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2012 (English)In: Astronomy and Astrophysics, ISSN 0004-6361, E-ISSN 1432-0746, Vol. 541, A3- p.Article in journal (Refereed) Published
Abstract [en]

Herschel images in six photometric bands show the thermal emission of the debris disk surrounding beta Pic. In the three PACS bands at 70 mu m, 100 mu m and 160 mu m and in the 250 mu m SPIRE band, the disk is well-resolved, and additional photometry is available in the SPIRE bands at 350 mu m and 500 mu m, where the disk is only marginally resolved. The SPIRE maps reveal a blob to the southwest of beta Pic, coinciding with submillimetre detection of excess emission in the disk. We investigated the nature of this blob. Our comparison of the colours, spectral energy distribution and size of the blob, the disk and the background sources shows that the blob is most likely a background source with a redshift between z = 1.0 and z = 1.6.

Place, publisher, year, edition, pages
2012. Vol. 541, A3- p.
Keyword [en]
stars: early-type, stars: individual: beta Pictoris, planetary systems, techniques: image processing
National Category
Astronomy, Astrophysics and Cosmology
URN: urn:nbn:se:su:diva-80079DOI: 10.1051/0004-6361/201118631ISI: 000304390900003OAI: diva2:555991


Available from: 2012-09-23 Created: 2012-09-12 Last updated: 2012-09-23Bibliographically approved

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Olofsson, Göran
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Department of Astronomy
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