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Title:
NGC 2371: A high excitation planetary nebula with an O VI nucleus
Authors:
Kaler, J. B.; Stanghellini, L.; Shaw, R. A.
Affiliation:
AA(Univ. of Illinois, Urbana, IL, US), AB(Univ. of Illinois, Urbana, IL, US), AC(Space Telescope Science Inst., Baltimore, MD, US)
Publication:
Astronomy and Astrophysics (ISSN 0004-6361), vol. 279, no. 2, p. 529-535 (A&A Homepage)
Publication Date:
11/1993
Category:
Astronomy
Origin:
STI
NASA/STI Keywords:
EARLY STARS, PLANETARY NEBULAE, SPECTRUM ANALYSIS, STELLAR EVOLUTION, STELLAR SPECTRA, ULTRAVIOLET ASTRONOMY, ULTRAVIOLET SPECTRA, VISIBLE SPECTRUM, ABSORPTION SPECTRA, ASTRONOMICAL SPECTROSCOPY, LIGHT (VISIBLE RADIATION), LINE SPECTRA, OXYGEN SPECTRA, SPECTROGRAPHS, STELLAR LUMINOSITY
Bibliographic Code:
1993A&A...279..529K

Abstract

We have analyzed the spectrum of the planetary nebula NGC 2371 and its nucleus to identify the evolutionary stage of this singular object. By means of nebular and stellar data we calculate fundamental stellar parameters and acquire more insight into the nebular characteristics. The nucleus is hot (Teff greater than or = 120,000 K) and luminous (log L/solar luminosity = 3.0), is probably close to the blue bend of the Post-Asymptotic Giant Branch (P-AGB) evolutionary sequence, and shows prominent O VI emissions with (so far) unique double narrow and broad features. A preliminary correlation between the stellar parameters and the O VI strength is derived.

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