VLT observations of the highly ionized nebula around Brey2

Y. Nazé; G. Rauw; J. Manfroid; Y. H. Chu; J. M. Vreux

doi:10.1051/0004-6361:20030260

VLT observations of the highly ionized nebula around Brey2

Y. Nazé, G. Rauw, J. Manfroid, Y. H. Chu, J. M. Vreux

Astronomy

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Abstract

We present the first high resolution He II λ4686 images of the high excitation nebula around the WR star Brey2 in the LMC. This nebula presents a striking morphology: a small arc-like feature some 3.6 pc in radius is particularly prominent in the He II λ4686 line. We further discover a previously unknown faint He II emission that extends over an area of 22 × 17 pc². An even fainter He II emission is apparently associated with the interstellar bubble blown by the progenitor of Brey2. The total He II flux corresponds to an ionizing flux of 4 × 10⁴⁷ photons s^-1. Hα, [O III], and He I λ5876 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.

Original language	English (US)
Pages (from-to)	L13-L16
Journal	Astronomy and Astrophysics
Volume	401
Issue number	2
DOIs	https://doi.org/10.1051/0004-6361:20030260
State	Published - Apr 2003

Keywords

ISM: abundances
ISM: bubbles
ISM: supernova remnants
Stars: individual: Brey2

ASJC Scopus subject areas

Astronomy and Astrophysics
Space and Planetary Science

Online availability

10.1051/0004-6361:20030260

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title = "VLT observations of the highly ionized nebula around Brey2",

abstract = "We present the first high resolution He II λ4686 images of the high excitation nebula around the WR star Brey2 in the LMC. This nebula presents a striking morphology: a small arc-like feature some 3.6 pc in radius is particularly prominent in the He II λ4686 line. We further discover a previously unknown faint He II emission that extends over an area of 22 × 17 pc2. An even fainter He II emission is apparently associated with the interstellar bubble blown by the progenitor of Brey2. The total He II flux corresponds to an ionizing flux of 4 × 1047 photons s-1. Hα, [O III], and He I λ5876 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.",

keywords = "ISM: abundances, ISM: bubbles, ISM: supernova remnants, Stars: individual: Brey2",

author = "Y. Naz{\'e} and G. Rauw and J. Manfroid and Chu, {Y. H.} and Vreux, {J. M.}",

year = "2003",

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TY - JOUR

T1 - VLT observations of the highly ionized nebula around Brey2

AU - Nazé, Y.

AU - Rauw, G.

AU - Manfroid, J.

AU - Chu, Y. H.

AU - Vreux, J. M.

PY - 2003/4

Y1 - 2003/4

N2 - We present the first high resolution He II λ4686 images of the high excitation nebula around the WR star Brey2 in the LMC. This nebula presents a striking morphology: a small arc-like feature some 3.6 pc in radius is particularly prominent in the He II λ4686 line. We further discover a previously unknown faint He II emission that extends over an area of 22 × 17 pc2. An even fainter He II emission is apparently associated with the interstellar bubble blown by the progenitor of Brey2. The total He II flux corresponds to an ionizing flux of 4 × 1047 photons s-1. Hα, [O III], and He I λ5876 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.

AB - We present the first high resolution He II λ4686 images of the high excitation nebula around the WR star Brey2 in the LMC. This nebula presents a striking morphology: a small arc-like feature some 3.6 pc in radius is particularly prominent in the He II λ4686 line. We further discover a previously unknown faint He II emission that extends over an area of 22 × 17 pc2. An even fainter He II emission is apparently associated with the interstellar bubble blown by the progenitor of Brey2. The total He II flux corresponds to an ionizing flux of 4 × 1047 photons s-1. Hα, [O III], and He I λ5876 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.

KW - ISM: abundances

KW - ISM: bubbles

KW - ISM: supernova remnants

KW - Stars: individual: Brey2

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DO - 10.1051/0004-6361:20030260

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SP - L13-L16

JO - Astronomy and Astrophysics

JF - Astronomy and Astrophysics

IS - 2

ER -

VLT observations of the highly ionized nebula around Brey2

Abstract

Keywords

ASJC Scopus subject areas

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