EDP Sciences
Free access
Volume 376, Number 3, September IV 2001
Page(s) 917 - 927
Section Formation, structure and evolution of stars
DOI http://dx.doi.org/10.1051/0004-6361:20010947

A&A 376, 917-927 (2001)
DOI: 10.1051/0004-6361:20010947

The $\eta$ Carinae spectrum of SS73 11 (=Ve 2-27)

S. J. C. Landaberry, C. B. Pereira and F. X. de Araújo

Observatório Nacional-MCT, Rua José Cristino, 77, CEP 20921-400, São Cristóvão, Rio de Janeiro-RJ, Brazil

(Received 20 March 2001 / Accepted 14 June 2001)

We report new spectroscopic observations of the peculiar emission-line star SS73 11, between 3200 Å and 7200 Å. A line list is provided with their suggested identifications. From the measurements of several forbidden and permitted emission lines of single ionized iron, we derived the color excess and the excitation temperature. We also discuss the nature of SS73 11 based on data obtained. The spectrum closely resembles not only $\eta$ Car but also some proto-planetary nebulae. On the other hand we concluded that this object is not a B[e]-supergiant, a symbiotic star or a Herbig AeB[e]-star.

Key words: stars: emission-line, Be -- stars: AGB and post-AGB -- stars: individual: $\eta$ Car

Offprint request: S. J. C. Landaberry, sayd@on.br

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© ESO 2001