VLT observations of the highly ionized nebula around Brey2

Details VLT observations of the highly ionized nebula around Brey2 VLT observations of the highly ionized nebula around Brey2

2003-02-25

arxiv.org/abs/astro-ph/0302515v1

Astron.Astrophys.401:L13,2003

Astronomy and Astrophysics

Astrophysics

4 pages, 3 figures (2 in jpg), accepted by A&A Letters, also available from http://vela.astro.ulg.ac.be/Preprints/P80/index.ht

Scientific paper

10.1051/0004-6361:20030260

We present the first high resolution HeII 4686 images of the high excitation nebula around the WR star Brey 2 in the LMC. This nebula presents a striking morphology: a small arc-like feature some 3.6pc in radius is particularly prominent in the HeII 4686 line. We further discover a previously unknown faint HeII emission that extends over an area of 22*17 pc^2. An even fainter HeII emission is apparently associated with the interstellar bubble blown by the progenitor of Brey2. The total HeII flux corresponds to an ionizing flux of 4*10^{47} photons/s. Halpha, [OIII], and HeI 5876 images and long-slit spectra are also examined in this letter, enabling us to investigate the detailed physical properties at various locations of the nebula.

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