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

Kazunori Ishibashi; Theodore R. Gull; Kris Davidson; Nathan Smith; Thierry Lanz; Don Lindler; Keith Feggans; Ekaterina Verner; Bruce E. Woodgate; Randy A. Kimble; Charles W. Bowers; Steven Kraemer; Sarah R. Heap; Anthony C. Danks; Stephen P. Maran; Charles L. Joseph; Mary Elizabeth Kaiser; Jeffrey L. Linsky; Fred Roesler; Donna Weistrop

doi:10.1086/375306

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

Kazunori Ishibashi, Theodore R. Gull, Kris Davidson, Nathan Smith, Thierry Lanz, Don Lindler, Keith Feggans, Ekaterina Verner, Bruce E. Woodgate, Randy A. Kimble, Charles W. Bowers, Steven Kraemer, Sarah R. Heap, Anthony C. Danks, Stephen P. Maran, Charles L. Joseph, Mary Elizabeth Kaiser, Jeffrey L. Linsky, Fred Roesler, Donna Weistrop

Minnesota Institute for Astrophysics

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86 Scopus citations

Abstract

We report long-slit spectroscopic mapping of the η 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.

Original language	English (US)
Pages (from-to)	3222-3236
Number of pages	15
Journal	Astronomical Journal
Volume	125
Issue number	6 1770
DOIs	https://doi.org/10.1086/375306
State	Published - Jun 2003

Keywords

Circumstellar matter
ISM: individual (Little Homunculus)
ISM: jets and outflows
Stars: individual (η Carinae)
Stars: mass loss
Stars: winds, outflows

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Ishibashi, K., Gull, T. R., Davidson, K., Smith, N., Lanz, T., Lindler, D., Feggans, K., Verner, E., Woodgate, B. E., Kimble, R. A., Bowers, C. W., Kraemer, S., Heap, S. R., Danks, A. C., Maran, S. P., Joseph, C. L., Elizabeth Kaiser, M., Linsky, J. L., Roesler, F., & Weistrop, D. (2003). Discovery of a little homunculus within the Homunculus Nebula of η Carinae. Astronomical Journal, 125(6 1770), 3222-3236. https://doi.org/10.1086/375306

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, Elizabeth Kaiser, M, Linsky, JL, Roesler, F & Weistrop, D 2003, 'Discovery of a little homunculus within the Homunculus Nebula of η Carinae', Astronomical Journal, vol. 125, no. 6 1770, pp. 3222-3236. https://doi.org/10.1086/375306

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title = "Discovery of a little homunculus within the Homunculus Nebula of η Carinae",

abstract = "We report long-slit spectroscopic mapping of the η 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.",

keywords = "Circumstellar matter, ISM: individual (Little Homunculus), ISM: jets and outflows, Stars: individual (η Carinae), Stars: mass loss, Stars: winds, outflows",

author = "Kazunori Ishibashi and Gull, {Theodore R.} and Kris Davidson and Nathan Smith and Thierry Lanz and Don Lindler and Keith Feggans and Ekaterina Verner and Woodgate, {Bruce E.} and Kimble, {Randy A.} and Bowers, {Charles W.} and Steven Kraemer and Heap, {Sarah R.} and Danks, {Anthony C.} and Maran, {Stephen P.} and Joseph, {Charles L.} and {Elizabeth Kaiser}, Mary and Linsky, {Jeffrey L.} and Fred Roesler and Donna Weistrop",

year = "2003",

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doi = "10.1086/375306",

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T1 - Discovery of a little homunculus within the Homunculus Nebula of η Carinae

AU - Ishibashi, Kazunori

AU - Gull, Theodore R.

AU - Davidson, Kris

AU - Smith, Nathan

AU - Lanz, Thierry

AU - Lindler, Don

AU - Feggans, Keith

AU - Verner, Ekaterina

AU - Woodgate, Bruce E.

AU - Kimble, Randy A.

AU - Bowers, Charles W.

AU - Kraemer, Steven

AU - Heap, Sarah R.

AU - Danks, Anthony C.

AU - Maran, Stephen P.

AU - Joseph, Charles L.

AU - Elizabeth Kaiser, Mary

AU - Linsky, Jeffrey L.

AU - Roesler, Fred

AU - Weistrop, Donna

PY - 2003/6

Y1 - 2003/6

N2 - We report long-slit spectroscopic mapping of the η 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.

AB - We report long-slit spectroscopic mapping of the η 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.

KW - Circumstellar matter

KW - ISM: individual (Little Homunculus)

KW - ISM: jets and outflows

KW - Stars: individual (η Carinae)

KW - Stars: mass loss

KW - Stars: winds, outflows

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ER -

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

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