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.
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页码:3222 / 3236
页数:15
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