The very young planetary nebula LS IV -12 111

Details The very young planetary nebula LS IV -12 111 The very young planetary nebula LS IV -12 111

2005-05-31

arxiv.org/abs/astro-ph/0505617v1

Astronomy and Astrophysics

Astrophysics

3 pages, 5 images, Proceedings of the "Stellar end products" workshop, 13-15 April 2005, Granada, Spain, ed. M.A. P\'erez-Torr

Scientific paper

In the last few years we have started a systematic study aimed at detecting very young Planetary Nebulae (YPNs). The project, based on both radio (multi-frequency and high resolution) and optical observations, has already provided interesting results, including the identification of new YPNs and the observation, for the first time in PN in this very early phase of their formation, of radio bipolar morphologies. In this paper we present radio and optical results on one of our targets, namely IRAS 19590-1249 (LS IV -12 111). The analysis of spectroscopic observations, obtained with the Anglo Australian Telescope (AAT) in different epochs, has allowed us to conclude that the optical spectrum of this object has evolved quite rapidly, showing, very recently, strong forbidden nebular emission lines consistent with a young PN. This result confirms that IRAS 19590-1249, has turned into a PN within the last decades and makes this source a perfect target for studying the early evolution and structure of Planetary Nebulae.

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