A case study of a WC planetary nebula nucleus - Henize 2-99

Journal Article · Mon May 01 04:00:00 EDT 1989 · Astrophys. J., Suppl. Ser.; (United States)

DOI:https://doi.org/10.1086/191338· OSTI ID:5841948

Kaler, J B; Shaw, R A; Feibelman, W A; Lutz, J H

The WC spectrum of the nucleus of the planetary nebula Henize 2-99. Fluxes are given, emission lines are identified, and blends are described. The most powerful emissions are C III, C II, and C IV. O, H, and Si lines are also observed, but little stellar nitrogen is found except for N V. The interstellar extinction is estimated at c = 0.9 + or - 0.2. Blackbody, Zanstra, and Stoy temperatures are found to be 70,000 K, 26,000 K, and 27,000 K, respectively. It is shown that He 2-99 is binebulous with a prominent enhancement in H-alpha along the minor axis. The structural characteristics of He 2-99 are very similar to BD +30 deg 3639 and NGC 40. 69 refs.

• Research Organization: Illinois Univ., Urbana (USA); Lick Observatory, Santa Cruz, CA (USA); NASA, Goddard Space Flight Center, Greenbelt, MD (USA); Washington State Univ., Pullman (USA)
• OSTI ID: 5841948
• Journal Information: Astrophys. J., Suppl. Ser.; (United States), Journal Name: Astrophys. J., Suppl. Ser.; (United States) Vol. 70; ISSN APJSA
• Country of Publication: United States
• Language: English

Related Subjects

640102* -- Astrophysics & Cosmology-- Stars & Quasi-Stellar
Radio & X-Ray Sources
71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
CARBON
ELEMENTS
EMISSION SPECTRA
INTERSTELLAR SPACE
MAIN SEQUENCE STARS
NEBULAE
NONMETALS
PLANETARY NEBULAE
SPACE
SPECTRA
STARS
STELLAR ACTIVITY
STELLAR WINDS
VISIBLE SPECTRA
WOLF-RAYET STARS