2010A&A...518L.131E

Query : 2010A&A...518L.131E

2010A&A...518L.131E - Astronomy and Astrophysics, volume 518, L131-131 (2010/7-2)

Cold DUst around NEarby stars (DUNES). First results. A resolved exo-Kuiper belt around the solar-like star ζ² Ret.

EIROA C., FEDELE D., MALDONADO J., GONZALEZ-GARCIA B.M., RODMANN J., HERAS A.M., PILBRATT G.L., AUGEREAU J.-C., MORA A., MONTESINOS B., ARDILA D., BRYDEN G., LISEAU R., STAPELFELDT K., LAUNHARDT R., SOLANO E., BAYO A., ABSIL O., AREVALO M., BARRADO D., BEICHMAN C., DANCHI W., DEL BURGO C., ERTEL S., FRIDLUND M., FUKAGAWA M., GUTIERREZ R., GRUEN E., KAMP I., KRIVOV A., LEBRETON J., LOEHNE T., LORENTE R., MARSHALL J., MARTINEZ-ARNAIZ R., MEEUS G., MONTES D., MORBIDELLI A., MUELLER S., MUTSCHKE H., NAKAGAWA T., OLOFSSON G., RIBAS I., ROBERGE A., SANZ-FORCADA J., THEBAULT P., WALKER H., WHITE G.J. and WOLF S.

Abstract (from CDS):

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 L_dust/L_*∼5x10^–7 (1σ level) around those stars. A flattened, disk-like structure with a semi-major axis of ∼100AU 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 L_dust/L_*≃10^–5.

Abstract Copyright: ∼

Journal keyword(s): stars: general - planetary system - space vehicles: instruments

Simbad objects: 8

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Number of rows : 8

N	Identifier	Otype	ICRS (J2000) RA	ICRS (J2000) DEC	Mag U	Mag B	Mag V	Mag R	Mag I	Sp type	#ref 1850 - 2022	#notes
1	* q01 Eri	PM*	01 42 29.3145176952	-53 44 26.991453264		6.05	5.52			F9V	296	1
2	* zet02 Ret	**	03 18 12.8188824117	-62 30 22.904711032		5.814	5.228			G1V	346	0
3	HD 61005	PM*	07 35 47.4623556456	-32 12 14.045086368		8.96	8.22			G8Vk	198	0
4	* alf Boo	RG*	14 15 39.67207	+19 10 56.6730	2.46	1.18	-0.05	-1.03	-1.68	K1.5IIIFe-0.5	2232	0
5	* del Pav	PM*	20 08 43.6088716052	-66 10 55.442769229	4.78	4.32	3.56	2.95	2.61	G8IV	371	0
6	HD 211415	PM*	22 18 15.6133953371	-53 37 37.466806476		5.98	5.39	6.52		G0V	179	0
7	* 51 Peg	PM*	22 57 27.9804852576	+20 46 07.797040104	6.39	6.16	5.46	4.97	4.61	G2IV	1120	1
8	* alf PsA	**	22 57 39.04625	-29 37 20.0533	1.31	1.25	1.16	1.11	1.09	A4V	1185	3

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