A background galaxy in the field of the beta Pic debris disk
arXiv:1203.0475 · doi:10.1051/0004-6361/201118631
Abstract
Herschel images in six photometric bands show the thermal emission of the debris disk surrounding beta Pic. In the three PACS bands at 70 micron, 100 micron and 160 micron and in the 250 micron SPIRE band, the disk is well-resolved, and additional photometry is available in the SPIRE bands at 350 micron and 500 micron, 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.
References in corpus (15)
- Validation of the new Hipparcos reduction
- Herschel Space Observatory - An ESA facility for far-infrared and submillimetre astronomy
- The Photodetector Array Camera and Spectrometer (PACS) on the Herschel Space Observatory
- The Herschel-SPIRE instrument and its in-flight performance
- A giant planet imaged in the disk of the young star Beta Pictoris
- A planet on an inclined orbit as an explanation of the warp in the Beta Pictoris disk
- Cosmological parameters from supernova observations: A critical comparison of three data sets
- In-flight calibration of the Herschel-SPIRE instrument
- STIS Coronagraphic Observations of Beta Pictoris
- Herschel-ATLAS: Dust temperature and redshift distribution of SPIRE and PACS detected sources using submillimetre colours
- Close stellar encounters with planetesimal discs: The dynamics of asymmetry in the Beta Pictoris system
- First results from HerMES on the evolution of the submillimetre luminosity function
- The β Pictoris disk imaged by Herschel PACS and SPIRE
- A Submillimetre Search for Cold Extended Debris Disks in the Beta Pictoris Moving Group
- The 1.2 Millimeter Image of the beta Pictoris Disk