An 11.6 micron Keck search for exo-zodiacal dust

被引:10
作者
Kuchner, MJ [1 ]
Brown, ME [1 ]
Koresko, CD [1 ]
机构
[1] CALTECH, Pasadena, CA 91125 USA
关键词
D O I
10.1086/316267
中图分类号
P1 [天文学];
学科分类号
0704 ;
摘要
We have begun an observational program to search nearby stars for dust disks that are analogous to the disk of zodiacal dust that fills the interior of our solar system. We imaged six nearby main-sequence stars with the Keck telescope at 11.6 mu m, correcting for atmosphere-induced wavefront aberrations and deconvolving the point spread function via classical speckle analysis. We compare our data to a simple model of the solar zodiacal dust based on COBE/DIRBE observations and place upper limits on the concentration of exo-zodiacal dust around these stars.
引用
收藏
页码:1336 / 1341
页数:6
相关论文
共 21 条
[1]   DISCOVERY OF A SHELL AROUND ALPHA-LYRAE [J].
AUMANN, HH ;
GILLETT, FC ;
BEICHMAN, CA ;
DEJONG, T ;
HOUCK, JR ;
LOW, FJ ;
NEUGEBAUER, G ;
WALKER, RG ;
WESSELIUS, PR .
ASTROPHYSICAL JOURNAL, 1984, 278 (01) :L23-L27
[2]  
Backman D.E., 1986, ADV SPACE RES, V6, P43
[3]  
Backman D. E., 1993, Protostars and Planets III, P1253
[4]  
BEICHMAN C, 1996, JPL PUBL, V9622
[6]   Spectral irradiance calibration in the infrared .7. New composite spectra, comparison with model atmospheres, and far-infrared extrapolations [J].
Cohen, M ;
Witteborn, FC ;
Carbon, DF ;
Davies, JK ;
Wooden, DH ;
Bregman, JD .
ASTRONOMICAL JOURNAL, 1996, 112 (05) :2274-2285
[7]  
DERMOTT SF, 1992, IAU SYMP, V152, P333
[8]  
EGRET D, 1991, DATABASES ONLINE DAT, P79
[9]  
ENGELKE CW, 1990, SDP327 LINC LAB
[10]  
ESA, 1997, ESA SP-1200, The Hipparcos and Tycho Catalogues