The Manchester occulting mask imager (MOMI): first results on the environment of P Cygni

被引：14

作者：

O'Connor, JA ^{[1
]}

Meaburn, J ^{[1
]}

Bryce, M ^{[1
]}

机构：

[1] Univ Manchester, Dept Phys & Astron, Manchester M13 9PL, Lancs, England

来源：

MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY | 1998年 / 300卷 / 02期

关键词：

line : profiles; stars : individual : P Cygni; stars : mass-loss; ISM : bubbles;

D O I：

10.1046/j.1365-8711.1998.01900.x

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

The design and first use of the Manchester occulting mask imager (MOMI) is described. This device, when combined with the Cassegrain or Ritchey-Chretien foci of large telescopes, is dedicated to the imagery of faint-line emission regions around bright central sources. Initial observations, with MOMI on the Nordic Optical Telescope (NOT), of the V = 4.8 mag P Cygni environment have revealed a greater than or equal to 5 arcmin long [N II] lambda 6584-Angstrom emitting filament projecting from the outer nebular shell of this luminous blue variable (LBV) star. The presence of a monopolar lobe older than both the inner (22 arcsec diameter) and outer (1.6 arcmin diameter) shells is suggested.

引用

页码：411 / 416

页数：6

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