MIDINFRARED SPECTROSCOPY OF BETA-PICTORIS - CONSTRAINTS ON THE DUST GRAIN-SIZE

被引：38

作者：

AITKEN, DK ^{[1
]}

MOORE, TJT ^{[1
]}

ROCHE, PE ^{[1
]}

SMITH, CH ^{[1
]}

WRIGHT, CM ^{[1
]}

机构：

[1] UNIV OXFORD,DEPT ASTROPHYS,OXFORD OX1 3RH,OXON,ENGLAND

来源：

MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY | 1993年 / 265卷 / 04期

关键词：

CIRCUMSTELLAR MATTER; STARS; INDIVIDUAL; BETA PIC; DUST; EXTINCTION; INFRARED;

D O I：

10.1093/mnras/265.1.L41

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We present 8-13 mu m spectroscopy of Beta Pictoris which confirms the presence of silicate emission in its infrared excess, as earlier reported on the basis of narrow-band photometry, and indicates a similarity with cometary dust. The spectral form of the infrared excess allows us to place an upper limit of 2-3 mu m on the size of the emitting grains in the circumstellar disc.

引用

页码：L41 / L43

页数：3

共 21 条

[1]

AITKEN DK, 1984, 16 P ESLAB S, P3313

[2] 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

[3] INFRARED OBSERVATIONS AND THERMAL MODELS OF THE BETA-PICTORIS DISK [J].

BACKMAN, DE ;

GILLETT, FC ;

WITTEBORN, FC .

ASTROPHYSICAL JOURNAL, 1992, 385 (02) :670-679

[4]

BREGMAN JD, 1987, ASTRON ASTROPHYS, V187, P616

[5] THE IDENTIFICATION OF CRYSTALLINE OLIVINE IN COMETARY SILICATES [J].

CAMPINS, H ;

RYAN, EV .

ASTROPHYSICAL JOURNAL, 1989, 341 (02) :1059-1066

[6] OPTICAL-PROPERTIES OF INTERSTELLAR GRAPHITE AND SILICATE GRAINS [J].

DRAINE, BT ;

LEE, HM .

ASTROPHYSICAL JOURNAL, 1984, 285 (01) :89-108

[7] TABULATED OPTICAL-PROPERTIES OF GRAPHITE AND SILICATE GRAINS [J].

DRAINE, BT .

ASTROPHYSICAL JOURNAL SUPPLEMENT SERIES, 1985, 57 (03) :587-594

[8]

Gillett F., 1986, LIGHT DARK MATTER, P61

[9] 8-13 MU-SPECTRA OF COMPACT H II REGIONS [J].

GILLETT, FC ;

FORREST, WJ ;

MERRILL, KM ;

CAPPS, RW ;

SOIFER, BT .

ASTROPHYSICAL JOURNAL, 1975, 200 (03) :609-620

[10]

HAUSER MG, 1988, COMETS COSMOLOGY, P27

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