Hst wfpc2h alpha imagery of the nebula M1-67: A clumpy LBV wind imprintingitself on the nebular structure?

Citation
Y. Grosdidier et al., Hst wfpc2h alpha imagery of the nebula M1-67: A clumpy LBV wind imprintingitself on the nebular structure?, ASTROPHYS J, 506(2), 1998, pp. L127-L131
Citations number
32
Categorie Soggetti
Space Sciences
Journal title
ASTROPHYSICAL JOURNAL
ISSN journal
0004637X → ACNP
Volume
506
Issue
2
Year of publication
1998
Part
2
Pages
L127 - L131
Database
ISI
SICI code
0004-637X(19981020)506:2<L127:HWAIOT>2.0.ZU;2-O
Abstract
With the Hubble Space Telescope's Wide Field Planetary Camera 2 we have obt ained a deep, H alpha image of the relatively young ejection-type nebula M1 -67 around the runaway Population I Wolf-Rayet star WR 124 (WN 8). This ima ge shows a wealth of complex detail, some of which have never been seen bef ore in such a nebula. In particular, large arcs of nebulosity extend around the central star yet with no overall global shell structure to the nebula and no clear bipolar signature as claimed by Sirianni et al. In addition, n umerous bright, mostly unresolved knots of emission, each less than or simi lar to 10(-4) M-circle dot, occur in the inner part of the nebula, often su rrounded by what appear to be their own local "wind" diffuse bubbles. Is th is the first direct evidence of spatially resolved hot clumps being ejected from a hot central star?