Discovery of a little Homunculus within the Homunculus Nebula of η Carinae

被引：93

作者：

Ishibashi, K

Gull, TR

Davidson, K

Smith, N

Lanz, T

Lindler, D

Feggans, K

Verner, E

Woodgate, BE

Kimble, RA

Bowers, CW

Kraemer, S

Heap, SR

Danks, AC

Maran, SP

Joseph, CL

Kaiser, ME

Linsky, JL

Roesler, F

Weistrop, D

机构：

[1] NASA, Goddard Space Flight Ctr, Astron & Solar Phys Lab, Greenbelt, MD 20771 USA

[2] Univ Minnesota, Dept Astron, Minneapolis, MN 55455 USA

[3] Univ Maryland, Dept Astron, College Pk, MD 20742 USA

[4] Adv Comp Concepts Inc, Potomac, MD 20854 USA

[5] Catholic Univ Amer, Dept Phys, Washington, DC 20064 USA

[6] SGT Inc, Greenbelt, MD 20770 USA

[7] NASA, Goddard Space Flight Ctr, Space Sci Directorate, Greenbelt, MD 20771 USA

[8] Rutgers State Univ, Dept Phys & Astron, Piscataway, NJ USA

[9] Johns Hopkins Univ, Dept Phys & Astron, Baltimore, MD 21218 USA

[10] Univ Colorado, Joint Inst Lab Astrophys, Boulder, CO 80309 USA

[11] Univ Wisconsin, Dept Phys, Madison, WI 53711 USA

[12] Univ Nevada, Dept Phys, Las Vegas, NV 89154 USA

来源：

ASTRONOMICAL JOURNAL | 2003年 / 125卷 / 06期

关键词：

circumstellar matter; ISM : individual (Little Homunculus); ISM : jets and outflows; stars : individual (eta Carinae); stars : mass loss; stars; winds; outflows;

D O I：

10.1086/375306

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We report long-slit spectroscopic mapping of the eta Carinae nebula obtained using the Space Telescope Imaging Spectrograph. The observations reveal the presence of a previously unknown bipolar emission nebula ( roughly +/-2" along its major axis) embedded within the well-known and larger Homunculus Nebula. A preliminary analysis suggests that this embedded nebula may have originated from a minor eruption event circa 1890, 50 years after the formation of the larger Homunculus.

引用

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页码：3222 / 3236

页数：15

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