Cold DUst around NEarby Stars (DUNES). First results: A resolved exo-Kuiper belt around the solar-like star ζ^2 Ret
- Creators
- Eiroa, C.
- Ardila, D.
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Beichman, C.
Abstract
We present the first far-IR observations of the solar-type stars δ Pav, HR 8501, 51 Peg and ζ^2 Ret, taken within the context of the DUNES Herschel open time key programme (OTKP). This project uses the PACS and SPIRE instruments with the objective of studying infrared excesses due to exo-Kuiper belts around nearby solar-type stars. The observed 100 μm fluxes from δ Pav, HR 8501, and 51 Peg agree with the predicted photospheric fluxes, excluding debris disks brighter than L_(dust)/L_* ~ 5 × 10^(-7) (1σ level) around those stars. A flattened, disk-like structure with a semi-major axis of ~100 AU in size is detected around ζ^2 Ret. The resolved structure suggests the presence of an eccentric dust ring, which we interpret as an exo-Kuiper belt with L_(dust)/L_* ≈ 10^(-5).
Additional Information
© 2010 ESO. Received 31 March 2010; Accepted 11 May 2010; Published online 16 July 2010. Herschel is an ESA space observatory with science instruments provided by European-led Principal Investigator consortia and with important participation from NASA.Attached Files
Published - Eiroa2010p11920Astron_Astrophys.pdf
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Additional details
- Eprint ID
- 20973
- Resolver ID
- CaltechAUTHORS:20101123-094844780
- Created
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2010-11-23Created from EPrint's datestamp field
- Updated
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2021-11-09Created from EPrint's last_modified field