THE CHANDRA CARINA COMPLEX PROJECT: DECIPHERING THE ENIGMA OF CARINA'S DIFFUSE X-RAY EMISSION

被引：53

作者：

Townsley, Leisa K. ^{[1
]}

Broos, Patrick S. ^{[1
]}

Chu, You-Hua ^{[2
]}

Gagne, Marc ^{[3
]}

Garmire, Gordon P. ^{[1
]}

Gruendl, Robert A. ^{[2
]}

Hamaguchi, Kenji ^{[4
,5
,6
]}

Mac Low, Mordecai-Mark ^{[7
]}

Montmerle, Thierry ^{[8
]}

Naze, Yael ^{[9
]}

Oey, M. S. ^{[10
]}

Park, Sangwook ^{[11
]}

Petre, Robert ^{[12
]}

Pittard, Julian M. ^{[13
]}

机构：

[1] Penn State Univ, Dept Astron & Astrophys, University Pk, PA 16802 USA

[2] Univ Illinois, Dept Astron, Urbana, IL 61801 USA

[3] W Chester Univ, Dept Geol & Astron, W Chester, PA 19383 USA

[4] NASA, Goddard Space Flight Ctr, CRESST, Greenbelt, MD 20771 USA

[5] NASA, Goddard Space Flight Ctr, Xray Astrophys Lab, Greenbelt, MD 20771 USA

[6] Univ Maryland Baltimore Cty, Dept Phys, Baltimore, MD 21250 USA

[7] Amer Museum Nat Hist, Dept Astrophys, New York, NY 10024 USA

[8] Inst Astrophys, F-75014 Paris, France

[9] Univ Liege, Dept AGO, GAPHE, B-4000 Liege, Belgium

[10] Univ Michigan, Dept Astron, Ann Arbor, MI 48109 USA

[11] Univ Texas Arlington, Dept Phys, Arlington, TX 76019 USA

[12] NASA, Goddard Space Flight Ctr, Astrophys Sci Div, Greenbelt, MD 20771 USA

[13] Univ Leeds, Sch Phys & Astron, Leeds, W Yorkshire, England

来源：

ASTROPHYSICAL JOURNAL SUPPLEMENT SERIES | 2011年 / 194卷 / 01期

关键词：

H II regions; stars: massive; stars:; winds; outflows; X-rays: individual (Carina); X-rays: ISM; X-rays: stars; YOUNG STELLAR OBJECTS; STAR-FORMING GALAXIES; TURBULENT DESTRUCTION; SUZAKU OBSERVATION; SCALE STRUCTURE; NEBULA; MODELS; ACIS; CLUMPS; CLOUD;

D O I：

10.1088/0067-0049/194/1/15

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We present a 1.42 deg(2) mosaic of diffuse X-ray emission in the Great Nebula in Carina from the Chandra X-ray Observatory Advanced CCD Imaging Spectrometer camera. After removing > 14,000 X-ray point sources from the field, we smooth the remaining unresolved emission, tessellate it into segments of similar apparent surface brightness, and perform X-ray spectral fitting on those tessellates to infer the intrinsic properties of the X-ray-emitting plasma. By modeling faint resolved point sources, we estimate the contribution to the extended X-ray emission from unresolved point sources and show that the vast majority of Carina's unresolved X-ray emission is truly diffuse. Line-like correlated residuals in the X-ray spectral fits suggest that substantial X-ray emission is generated by charge exchange at the interfaces between Carina's hot, rarefied plasma and its many cold neutral pillars, ridges, and clumps.

引用

页数：23

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