HST FOC observations of η carinae

G. Weigelt; R. Albrecht; C. Barbieri; J. C. Blades; A. Boksenberg; P. Crane; K. Davidson; J. M. Deharveng; M. J. Disney; P. Jakobsen; T. M. Kamperman; I. R. King; F. Macchetto; C. D. Mackay; F. Paresce; D. Baxter; P. Greenfield; R. Jedrzejewski; A. Nota; W. B. Sparks

HST FOC observations of η carinae

G. Weigelt, R. Albrecht, C. Barbieri, J. C. Blades, A. Boksenberg, P. Crane, K. Davidson, J. M. Deharveng, M. J. Disney, P. Jakobsen, T. M. Kamperman, I. R. King, F. Macchetto, C. D. Mackay, F. Paresce, D. Baxter, P. Greenfield, R. Jedrzejewski, A. Nota, W. B. Sparks

Minnesota Institute for Astrophysics

Research output: Contribution to journal › Conference article › peer-review

32 Scopus citations

Abstract

The Faint Object Camera (FOC) on the HST was used to observe the inner regions of η Carinae through the filters F550M, F307M, and F190M. η Carinae is a very massive LBV with spectacular episodic shell ejections at an enormous mass loss rate. The new high-resolution FOC images resolved for the first time at visible and UV wavelengths the 3 speckle objects B, C, and D at separations of ∼ 0.1 to 0.3''. In addition to these objects new circumstellar structures were found. The image of the central object A is more extended than the core of the corresponding PSF. In the two UV images a new ring-shaped nebulosity was discovered. We discuss the HST FOC observations, compare the HST images with the diffraction-limited speckle masking observations at near-IR wavelengths, and discuss the nature and motion of the objects near the dominant star.

Original language	English (US)
Pages (from-to)	11-16
Number of pages	6
Journal	Revista Mexicana de Astronomia y Astrofisica: Serie de Conferencias
Volume	2
State	Published - 1995
Event	The Eta Carinae Region: A Laboratory of Stellar Evolution - La Plata, Argentina Duration: Nov 22 1993 → Nov 26 1993

Keywords

Circumstellar matter
Stars: Individual: (η CAR)
Stars: Mass loss

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Weigelt, G., Albrecht, R., Barbieri, C., Blades, J. C., Boksenberg, A., Crane, P., Davidson, K., Deharveng, J. M., Disney, M. J., Jakobsen, P., Kamperman, T. M., King, I. R., Macchetto, F., Mackay, C. D., Paresce, F., Baxter, D., Greenfield, P., Jedrzejewski, R., Nota, A., & Sparks, W. B. (1995). HST FOC observations of η carinae. Revista Mexicana de Astronomia y Astrofisica: Serie de Conferencias, 2, 11-16.

Weigelt, G, Albrecht, R, Barbieri, C, Blades, JC, Boksenberg, A, Crane, P, Davidson, K, Deharveng, JM, Disney, MJ, Jakobsen, P, Kamperman, TM, King, IR, Macchetto, F, Mackay, CD, Paresce, F, Baxter, D, Greenfield, P, Jedrzejewski, R, Nota, A & Sparks, WB 1995, 'HST FOC observations of η carinae', Revista Mexicana de Astronomia y Astrofisica: Serie de Conferencias, vol. 2, pp. 11-16.

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abstract = "The Faint Object Camera (FOC) on the HST was used to observe the inner regions of η Carinae through the filters F550M, F307M, and F190M. η Carinae is a very massive LBV with spectacular episodic shell ejections at an enormous mass loss rate. The new high-resolution FOC images resolved for the first time at visible and UV wavelengths the 3 speckle objects B, C, and D at separations of ∼ 0.1 to 0.3''. In addition to these objects new circumstellar structures were found. The image of the central object A is more extended than the core of the corresponding PSF. In the two UV images a new ring-shaped nebulosity was discovered. We discuss the HST FOC observations, compare the HST images with the diffraction-limited speckle masking observations at near-IR wavelengths, and discuss the nature and motion of the objects near the dominant star.",

keywords = "Circumstellar matter, Stars: Individual: (η CAR), Stars: Mass loss",

author = "G. Weigelt and R. Albrecht and C. Barbieri and Blades, {J. C.} and A. Boksenberg and P. Crane and K. Davidson and Deharveng, {J. M.} and Disney, {M. J.} and P. Jakobsen and Kamperman, {T. M.} and King, {I. R.} and F. Macchetto and Mackay, {C. D.} and F. Paresce and D. Baxter and P. Greenfield and R. Jedrzejewski and A. Nota and Sparks, {W. B.}",

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T1 - HST FOC observations of η carinae

AU - Weigelt, G.

AU - Albrecht, R.

AU - Barbieri, C.

AU - Blades, J. C.

AU - Boksenberg, A.

AU - Crane, P.

AU - Davidson, K.

AU - Deharveng, J. M.

AU - Disney, M. J.

AU - Jakobsen, P.

AU - Kamperman, T. M.

AU - King, I. R.

AU - Macchetto, F.

AU - Mackay, C. D.

AU - Paresce, F.

AU - Baxter, D.

AU - Greenfield, P.

AU - Jedrzejewski, R.

AU - Nota, A.

AU - Sparks, W. B.

PY - 1995

Y1 - 1995

N2 - The Faint Object Camera (FOC) on the HST was used to observe the inner regions of η Carinae through the filters F550M, F307M, and F190M. η Carinae is a very massive LBV with spectacular episodic shell ejections at an enormous mass loss rate. The new high-resolution FOC images resolved for the first time at visible and UV wavelengths the 3 speckle objects B, C, and D at separations of ∼ 0.1 to 0.3''. In addition to these objects new circumstellar structures were found. The image of the central object A is more extended than the core of the corresponding PSF. In the two UV images a new ring-shaped nebulosity was discovered. We discuss the HST FOC observations, compare the HST images with the diffraction-limited speckle masking observations at near-IR wavelengths, and discuss the nature and motion of the objects near the dominant star.

AB - The Faint Object Camera (FOC) on the HST was used to observe the inner regions of η Carinae through the filters F550M, F307M, and F190M. η Carinae is a very massive LBV with spectacular episodic shell ejections at an enormous mass loss rate. The new high-resolution FOC images resolved for the first time at visible and UV wavelengths the 3 speckle objects B, C, and D at separations of ∼ 0.1 to 0.3''. In addition to these objects new circumstellar structures were found. The image of the central object A is more extended than the core of the corresponding PSF. In the two UV images a new ring-shaped nebulosity was discovered. We discuss the HST FOC observations, compare the HST images with the diffraction-limited speckle masking observations at near-IR wavelengths, and discuss the nature and motion of the objects near the dominant star.

KW - Circumstellar matter

KW - Stars: Individual: (η CAR)

KW - Stars: Mass loss

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AN - SCOPUS:5944247767

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JO - Revista Mexicana de Astronomia y Astrofisica: Serie de Conferencias

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T2 - The Eta Carinae Region: A Laboratory of Stellar Evolution

Y2 - 22 November 1993 through 26 November 1993

ER -

HST FOC observations of η carinae

Abstract

Keywords

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