A DEEPLY EMBEDDED COMPANION TO LKH-ALPHA-198

被引：40

作者：

LAGAGE, PO

OLOFSSON, G

CABRIT, S

CESARSKY, CJ

NORDH, L

ESPINOSA, JMR

机构：

[1] STOCKHOLMS OBSERV,S-13336 SALTSJOBADEN,SWEDEN

[2] OBSERV GRENOBLE,F-38041 GRENOBLE,FRANCE

[3] INST ASTROFIS CANARIAS,E-38200 LA LAGUNA,SPAIN

来源：

ASTROPHYSICAL JOURNAL | 1993年 / 417卷 / 02期

关键词：

ASTROMETRY; BINARIES; GENERAL; INFRARED; STARS; INSTRUMENTATION; DETECTORS; ISM; JETS AND OUTFLOWS; INDIVIDUAL; (LKH-ALPHA-198);

D O I：

10.1086/187099

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

The region around the Herbig Ae/Be star LkHalpha 198 was imaged with the 10 mum CAMIRAS camera mounted on the Canada-France-Hawaii Telescope and on the Nordic Optical Telescope. We discovered, 6'' north of LkHalpha 198, a deeply embedded source (A(V) > 35), which may play an important role in the region, as indicated by its observed flux (approximately 40% of LkHalpha 198 at 12.3 mum) and its position on the optical images (on the axis of the elliptical optical nebula). It is quite likely that it is in fact the new embedded source, and not LkHalpha 198, which drives the CO molecular outflow seen in this region. At the resolution of our observations (FWHM = 1.3''), LkHalpha 198 appears pointlike, so that the mid-infrared excess from this object cannot be due to an extended envelope with a large amount of transiently heated small grains.

引用

页码：L79 / &

共 33 条

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