Year: 2010
Type: article
Abstract: We present the first far-IR observations of the solar-type stars δ Pav, HR 8501, 51 Peg and ζ2 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 Ldust/ ~ 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 ζ2 Ret. The resolved structure suggests the presence of an eccentric dust ring, which we interpret as an exo-Kuiper belt with Ldust/ ≈ 10-5.
Source: Astronomy and Astrophysics
Authors: 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, S. Wolf
Institutions: Universidad Autónoma de Madrid, Johns Hopkins University, Max Planck Institute for Astronomy, European Space Astronomy Centre, European Space Research and Technology Centre, Centre National de la Recherche Scientifique, Université Joseph Fourier, Institut de Planétologie et d'Astrophysique de Grenoble, Consejo Superior de Investigaciones Científicas, Centro de Astrobiología, California Institute of Technology, Jet Propulsion Laboratory, Chalmers University of Technology, University of Liège, NASA Exoplanet Science Institute, Goddard Space Flight Center, Uninova, Christian-Albrechts-Universität zu Kiel, Nagoya University, Max Planck Institute for Nuclear Physics, University of Groningen, Friedrich Schiller University Jena, The Open University, Universidad Complutense de Madrid, Observatoire de la Côte d’Azur, Japan Aerospace Exploration Agency, Institute of Space and Astronautical Science, Stockholm University, AlbaNova, Institute of Space Sciences, Observatoire de Paris, Laboratoire d’études spatiales et d’instrumentation en astrophysique, Rutherford Appleton Laboratory
Language: English
Subfield: Astronomy and Astrophysics
Field: Physics and Astronomy
Domain: Physical Sciences
Open Access status: bronze
OpenAlex ID: W4289785661