IRAS 06562-0337 - Final mass-loss episodes before the formation of a planetary nebula?

Bibcode
1993A&A...267L..11G
Garcia-Lario, P.; Manchado, A.; Sahu, K. C.; Pottasch, S. R.
Bibliographical reference

Astronomy and Astrophysics (ISSN 0004-6361), vol. 267, no. 1, p. L11-L14.

Advertised on:
1
1993
Number of authors
4
IAC number of authors
2
Citations
11
Refereed citations
11
Description
The onset of forbidden line emission in the spectrum of a proto-planetary nebula has been detected for the first time in the lapse of only two years. IRAS 06562-0337 was first observed in December 1987 and October 1988, showing only the Balmer lines in emission. A third spectrum obtained in February 1990 shows a quite different appearance, with forbidden emission lines typical of a low excitation planetary nebula. The effective temperature of the central star has clearly increased over these two years. Another spectrum obtained in March 1992 however, shows that the forbidden lines have disappeared. This, combined with the nature of the H-alpha profiles at different times, reveals the episodic nature of the mass loss mechanism which most likely precedes the formation of a planetary nebula.
Type
Refereed
Planetary nebulae
Star formation

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