DUst around NEarby Stars. The survey observational results

被引：188

作者：

Eiroa, C. ^{[1
]}

Marshall, J. P. ^{[1
]}

Mora, A. ^{[2
]}

Montesinos, B. ^{[3
]}

Absil, O. ^{[4
]}

Augereau, J. Ch. ^{[5
]}

Bayo, A. ^{[6
,7
]}

Bryden, G. ^{[8
]}

Danchi, W. ^{[9
]}

del Burgo, C. ^{[10
]}

Ertel, S. ^{[5
]}

Fridlund, M. ^{[11
]}

Heras, A. M. ^{[11
]}

Krivov, A. V. ^{[12
,13
]}

Launhardt, R. ^{[7
]}

Liseau, R. ^{[14
]}

Loehne, T. ^{[12
,13
]}

Maldonado, J. ^{[1
]}

Pilbratt, G. L. ^{[11
]}

Roberge, A. ^{[9
]}

Rodmann, J. ^{[15
]}

Sanz-Forcada, J. ^{[3
]}

Solano, E. ^{[3
]}

Stapelfeldt, K. ^{[9
]}

Thebault, P. ^{[16
]}

Wolf, S. ^{[17
]}

Ardila, D. ^{[18
]}

Arevalo, M. ^{[3
,34
]}

Beichmann, C. ^{[19
]}

Faramaz, V. ^{[5
]}

Gonzalez-Garcia, B. M. ^{[20
]}

Gutierrez, R. ^{[3
]}

Lebreton, J. ^{[5
]}

Martinez-Arnaiz, R. ^{[21
]}

Meeus, G. ^{[1
]}

Montes, D. ^{[21
]}

Olofsson, G. ^{[22
]}

Su, K. Y. L. ^{[23
]}

White, G. J. ^{[24
,25
]}

Barrado, D. ^{[3
,26
]}

Fukagawa, M. ^{[27
]}

Gruen, E. ^{[28
]}

Kamp, I. ^{[29
]}

Lorente, R. ^{[30
]}

Morbidelli, A. ^{[31
]}

Mueller, S. ^{[12
,13
]}

Mutschke, H. ^{[12
,13
]}

Nakagawa, T. ^{[32
]}

Ribas, I. ^{[33
]}

Walker, H. ^{[25
]}

机构：

[1] Univ Autonoma Madrid, Fac Ciencias, Dpto Fis Teor, E-28049 Madrid, Spain

[2] ESA ESAC Gaia SOC, Madrid 28691, Spain

[3] Ctr Astrobiol INTA CSIC, Madrid 28691, Spain

[4] Univ Liege, Inst Astrophys & Geophys, B-4000 Sart Tilman Par Liege, Belgium

[5] UJF Grenoble 1 CNRS INSU, IPAG, F-38041 Grenoble, France

[6] European Space Observ, Santiago 19, Chile

[7] Max Planck Inst Astron, D-69117 Heidelberg, Germany

[8] CALTECH, Jet Prop Lab, Pasadena, CA 91109 USA

[9] NASA, Goddard Space Flight Ctr, Greenbelt, MD 20771 USA

[10] Inst Nacl Astrofis Opt & Electr, Puebla, Mexico

[11] ES TEC SRE, ESA Astrophys & Fundamental Phys Miss Div, NL-2201 AZ Noordwijk, Netherlands

[12] Inst Astrophys, D-07745 Jena, Germany

[13] Univ Jena, D-07745 Jena, Germany

[14] Onsala Space Observ, Chalmers Univ Technol, Dept Earth & Space Sci, SE-43992 Onsala, Sweden

[15] Univ Gottingen, Inst Astrophys, D-37077 Gottingen, Germany

[16] LESIA, Observ Paris, F-92195 Meudon, France

[17] Univ Kiel, Inst Theoret Phys & Astrophys, D-24098 Kiel, Germany

[18] CALTECH, NASA, Herschel Sci Ctr, Pasadena, CA 91125 USA

[19] CALTECH, NASA, ExoPlanet Sci Inst, Pasadena, CA 91125 USA

[20] ISDEFE ESAC, Madrid 28691, Spain

[21] Univ Complutense Madrid, Fac Ciencias Fis, Dpt Astrofis, E-28040 Madrid, Spain

[22] Stockholm Univ, AlbaNova Univ Ctr, Dept Astron, S-10691 Stockholm, Sweden

[23] Univ Arizona, Steward Observ, Tucson, AZ 85721 USA

[24] Rutherford Appleton Lab, Didcot OX11 0QX, Oxon, England

[25] Open Univ, Dept Phys & Astrophys, Milton Keynes MK7 6AA, Bucks, England

[26] Ctr Astron Hispano Aleman, Calar Alto Observ, Almeria 04004, Spain

[27] Nagoya Univ, Nagoya, Aichi 4648601, Japan

[28] Max Planck Inst Kernphys, D-69117 Heidelberg, Germany

[29] Univ Groningen, Kapteyn Astron Inst, NL-9700 AV Groningen, Netherlands

[30] ESAC ESA, Herschel Sci Ctr, Madrid 28691, Spain

[31] Observ Cote Azur, F-06304 Nice 4, France

[32] Japan Aerosp Explorat Agcy JAXA, ISAS, Chuo Ku, Sagamihara, Kanagawa 2525210, Japan

[33] Inst Ciencies Espai CSIC IEEC, Fac Ciencias, Barcelona 08193, Spain

[34] ESA ESAC, Sci Arch Team, Madrid 28691, Spain

来源：

ASTRONOMY & ASTROPHYSICS | 2013年 / 555卷

关键词：

circumstellar matter; planetary systems; infrared: stars; SOLAR-TYPE STARS; DEBRIS DISKS; KUIPER-BELT; TEMPERATURE MINIMUM; MODEL ATMOSPHERES; MASSIVE PLANETS; NSTARS PROJECT; FGK STARS; MU-M; SEARCH;

D O I：

10.1051/0004-6361/201321050

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

Context. Debris discs are a consequence of the planet formation process and constitute the fingerprints of planetesimal systems. Their solar system counterparts are the asteroid and Edgeworth-Kuiper belts. Aims. The DUNES survey aims at detecting extra-solar analogues to the Edgeworth-Kuiper belt around solar-type stars, putting in this way the solar system into context. The survey allows us to address some questions related to the prevalence and properties of planetesimal systems. Methods. We used Herschel/PACS to observe a sample of nearby FGK stars. Data at 100 and 160 mu m were obtained, complemented in some cases with observations at 70 mu m, and at 250, 350 and 500 mu m using SPIRE. The observing strategy was to integrate as deep as possible at 100 mu m to detect the stellar photosphere. Results. Debris discs have been detected at a fractional luminosity level down to several times that of the Edgeworth-Kuiper belt. The incidence rate of discs around the DUNES stars is increased from a rate of similar to 12.1% +/- 5% before Herschel to similar to 20.2% +/- 2%. A significant fraction (similar to 52%) of the discs are resolved, which represents an enormous step ahead from the previously known resolved discs. Some stars are associated with faint far-IR excesses attributed to a new class of cold discs. Although it cannot be excluded that these excesses are produced by coincidental alignment of background galaxies, statistical arguments suggest that at least some of them are true debris discs. Some discs display peculiar SEDs with spectral indexes in the 70-160 mu m range steeper than the Rayleigh-Jeans one. An analysis of the debris disc parameters suggests that a decrease might exist of the mean black body radius from the F-type to the K-type stars. In addition, a weak trend is suggested for a correlation of disc sizes and an anticorrelation of disc temperatures with the stellar age.

引用

页数：30

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