HST FOC observations of η carinae

G. Weigelt, R. Albrecht, C. Barbieri, J. C. Blades, A. Boksenberg, P. Crane, Kris 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

Research output: Contribution to journalConference articlepeer-review

28 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 languageEnglish (US)
Pages (from-to)11-16
Number of pages6
JournalRevista Mexicana de Astronomia y Astrofisica: Serie de Conferencias
Volume2
StatePublished - Dec 1 1995
EventThe Eta Carinae Region: A Laboratory of Stellar Evolution - La Plata, Argentina
Duration: Nov 22 1993Nov 26 1993

Keywords

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

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