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Cold DUst around NEarby Stars (DUNES). First results: A resolved exo-Kuiper belt around the solar-like star ζ^2 Ret

Eiroa, C. and Ardila, D. and Beichman, C. (2010) Cold DUst around NEarby Stars (DUNES). First results: A resolved exo-Kuiper belt around the solar-like star ζ^2 Ret. Astronomy and Astrophysics, 518 . L131. ISSN 0004-6361.

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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).

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Beichman, C.0000-0002-5627-5471
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.
Subject Keywords:stars: general; planetary system; space vehicles: instruments
Record Number:CaltechAUTHORS:20101123-094844780
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Official Citation:Cold DUst around NEarby Stars (DUNES). First results - A resolved exo-Kuiper belt around the solar-like star ζ2 Ret C. Eiroa, D. Fedele, J. Maldonado, B. M. González-García, J. Rodmann, A. M. Heras, G. L. Pilbratt, J.-Ch. Augereau, A. Mora, B. Montesinos, D. Ardila, G. Bryden, R. Liseau, K. Stapelfeldt, R. Launhardt, E. Solano, A. Bayo, O. Absil, M. Arévalo, D. Barrado, C. Beichmann, W. Danchi, C. del Burgo, S. Ertel, M. Fridlund, M. Fukagawa, R. Gutiérrez, E. Grün, I. Kamp, A. Krivov, J. Lebreton, T. Löhne, R. Lorente, J. Marshall, R. Martínez-Arnáiz, G. Meeus, D. Montes, A. Morbidelli, S. Müller, H. Mutschke, T. Nakagawa, G. Olofsson, I. Ribas, A. Roberge, J. Sanz-Forcada, P. Thébault, H. Walker, G. J. White and S. Wolf A&A 518 L131 (2010) DOI: 10.1051/0004-6361/201014594
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:20973
Deposited By: Jason Perez
Deposited On:23 Nov 2010 21:32
Last Modified:24 Feb 2020 10:30

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