Hidden supernova remnants in the large magellanic cloud H II complex N44

You Hua Chu; Mordecai Mark Mac Low; Guillermo Garcia-Segura; Bart Wakker; Robert C. Kennicutt

doi:10.1086/173069

Hidden supernova remnants in the large magellanic cloud H II complex N44

You Hua Chu, Mordecai Mark Mac Low, Guillermo Garcia-Segura, Bart Wakker, Robert C. Kennicutt

Astronomy

Research output: Contribution to journal › Article › peer-review

Abstract

We have obtained ROSAT PSPC observations of N44, one of the largest H II complexes in the Large Magellanic Cloud. The X-ray emission mostly falls within the ionized shell structures in N44. We find that one faint shell is a classical supernova remnant overlooked by previous surveys. If we model the two largest shells as pressure-driven superbubbles, the predicted X-ray luminosity falls far below the observed value. Instead, we show that off-center supernova remnants hitting superbubble shells can explain the excess X-ray emission.

Original language	English (US)
Pages (from-to)	213-218
Number of pages	6
Journal	Astrophysical Journal
Volume	414
Issue number	1
DOIs	https://doi.org/10.1086/173069
State	Published - Sep 1 1993

Keywords

H II regions
Magellanic Clouds
Supernova remnants
X-rays: interstellar

ASJC Scopus subject areas

Astronomy and Astrophysics
Space and Planetary Science

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10.1086/173069

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title = "Hidden supernova remnants in the large magellanic cloud H II complex N44",

abstract = "We have obtained ROSAT PSPC observations of N44, one of the largest H II complexes in the Large Magellanic Cloud. The X-ray emission mostly falls within the ionized shell structures in N44. We find that one faint shell is a classical supernova remnant overlooked by previous surveys. If we model the two largest shells as pressure-driven superbubbles, the predicted X-ray luminosity falls far below the observed value. Instead, we show that off-center supernova remnants hitting superbubble shells can explain the excess X-ray emission.",

keywords = "H II regions, Magellanic Clouds, Supernova remnants, X-rays: interstellar",

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AU - Mac Low, Mordecai Mark

AU - Garcia-Segura, Guillermo

AU - Wakker, Bart

AU - Kennicutt, Robert C.

PY - 1993/9/1

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N2 - We have obtained ROSAT PSPC observations of N44, one of the largest H II complexes in the Large Magellanic Cloud. The X-ray emission mostly falls within the ionized shell structures in N44. We find that one faint shell is a classical supernova remnant overlooked by previous surveys. If we model the two largest shells as pressure-driven superbubbles, the predicted X-ray luminosity falls far below the observed value. Instead, we show that off-center supernova remnants hitting superbubble shells can explain the excess X-ray emission.

AB - We have obtained ROSAT PSPC observations of N44, one of the largest H II complexes in the Large Magellanic Cloud. The X-ray emission mostly falls within the ionized shell structures in N44. We find that one faint shell is a classical supernova remnant overlooked by previous surveys. If we model the two largest shells as pressure-driven superbubbles, the predicted X-ray luminosity falls far below the observed value. Instead, we show that off-center supernova remnants hitting superbubble shells can explain the excess X-ray emission.

KW - H II regions

KW - Magellanic Clouds

KW - Supernova remnants

KW - X-rays: interstellar

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Hidden supernova remnants in the large magellanic cloud H II complex N44

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