Journal Article

On the nature of the Galactic nebula We 1∓12

S. Kimeswenger

in Monthly Notices of the Royal Astronomical Society

Published on behalf of The Royal Astronomical Society

Volume 294, issue 2, pages 312-314
Published in print February 1998 | ISSN: 0035-8711
Published online February 1998 | e-ISSN: 1365-2966 | DOI:
On the nature of the Galactic nebula We 1∓12

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In 1977, Weinberger published a list of 12 new extended possible planetary nebulae (PNe). Whereas, because of their characteristic morphology and/or the presence of a blue central star, almost all of them could easily be suspected to be genuine planetary nebulae, one object (No. 12) captivated because of its unusually bright central star. This find prompted Kaler & Feibelman to question the PN nature of this object (We 1∓12) on the basis of IUE spectra. A definite conclusion could, however, not be drawn by them; thus, until now, the real nature of We 1∓12 remained unsolved. For the first time, a spectral investigation of both the central star and the nebula is presented in this paper. It definitely shows that this intriguing object is an (isolated) H ii region and its central star, as previously assumed, is an early B star which serves as the ionizing source. We 1∓12, a part of which is coincident with a weak IRAS point source, is at a distance of 2∓2.6 kpc and is reddened by E(B-V)=0.6∓0.8 mag.

Keywords: H ii regions; ISM: individual: We 1∓12; ISM: individual: LS III+5949; ISM: individual: IRAS 23100+5919; planetary nebulae: general

Journal Article.  0 words. 

Subjects: Astronomy and Astrophysics

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