POSITIONS OF THE RADIO RECOMBINATION LINE MASERS IN MWC-349

被引：55

作者：

PLANESAS, P ^{[1
]}

MARTINPINTADO, J ^{[1
]}

SERABYN, E ^{[1
]}

机构：

[1] CALTECH,DEPT PHYS 32047,PASADENA,CA 91125

来源：

ASTROPHYSICAL JOURNAL | 1992年 / 386卷 / 01期

关键词：

MASERS; RADIO LINES; ATOMIC; STARS; INDIVIDUAL; (MWC-349); MASS-LOSS; TECHNIQUES; INTERFEROMETRIC;

D O I：

10.1086/186283

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

The Owens Valley Millimeter Interferometer has been used at 232 GHz to measure the relative positions of the strongest H30-alpha-maser features toward MWC 349. Maser emission appears to originate from two positions 0.065" +/- 0.005" (80 AU) apart, located in an almost east-west direction (P.A. 107-degrees +/- 7-degrees), approximately perpendicular to the bipolar ionized wind structure observed in low-frequency radio continuum maps. We argue that the maser features originate in two positions associated with a nearly edge-on, neutral disk which is the source of high-density ionized gas. The maser spots probably arise from clumps located in the near part of the disk surface.

引用

页码：L23 / L26

页数：4

共 16 条

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