HE-2-90 - A SOUTHERN PLANETARY-NEBULA WITH LOW METAL ABUNDANCES

Authors
COSTA RDD PACHECO JAD MACIEL WJ
Citation
Rdd. Costa et al., HE-2-90 - A SOUTHERN PLANETARY-NEBULA WITH LOW METAL ABUNDANCES, Astronomy and astrophysics, 276(1), 1993, pp. 184-186
Citations number
22
Categorie Soggetti
Astronomy & Astrophysics
Journal title
Astronomy and astrophysics → ACNP
ISSN journal
00046361
Volume
276
Issue
1
Year of publication
1993
Pages
184 - 186
Database
ISI
SICI code
0004-6361(1993)276:1<184:H-ASPW>2.0.ZU;2-5
Abstract
Recent spectroscopic observations are presented for the southern plane tary nebulae He2-90. Plasma diagnostics and chemical composition are d erived, 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-luminosit y region of the HR diagram.