M1-77 - A peculiar planetary nebula

Details M1-77 - A peculiar planetary nebula M1-77 - A peculiar planetary nebula

Jun 1983

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1983a%26a...123..147s&link_type=abstract

Astronomy and Astrophysics (ISSN 0004-6361), vol. 123, no. 1, June 1983, p. 147-150. Research supported by the Consiglio Naziona

Astronomy and Astrophysics

Astrophysics

8

Planetary Nebulae, Stellar Mass, Astronomical Photography, Astronomical Photometry, Astronomical Spectroscopy, Interstellar Extinction, Red Giant Stars

Scientific paper

Photographic, spectroscopic and photometric observations of M1-77 indicate that nebular emissions of forbidden line O III are absent, and high dispersion spectra of the nebula yield an upper limit gas expansion velocity of 10 km/sec. In view of these results, it is concluded that M1-77 is a low excitation planetary nebula surrounding a cold central star whose mass is close to the lower boundary for planetary nebulae nuclei.

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