HE:2-90 - a Southern Planetary Nebula with Low Metal Abundances

Details HE:2-90 - a Southern Planetary Nebula with Low Metal Abundances HE:2-90 - a Southern Planetary Nebula with Low Metal Abundances

Sep 1993

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1993a%26a...276..184c&link_type=abstract

Astronomy and Astrophysics, Vol.276, NO. 1/SEPI, P. 184, 1993

Astronomy and Astrophysics

Astrophysics

14

Planetary Nebulae: Individual (He2-90), Stars: Abundances, Stars: Evolution

Scientific paper

Recent spectroscopic observations are presented for the southern planetary nebulae He2-90. Plasma diagnostics and chemical composition are derived, showing that the object has very low abundances of O, N, S, Ne, and Ar, despite being near the galactic plane. Estimated properties of the central star suggest that this object lies at the low-luminosity region of the HR diagram.

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