An addition to the sample of evolved planetary nebulae.

Details An addition to the sample of evolved planetary nebulae. An addition to the sample of evolved planetary nebulae.

Jun 1995

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1995a%26a...298..204t&link_type=abstract

Astronomy and Astrophysics, v.298, p.204

Astronomy and Astrophysics

Astrophysics

7

Surveys, Planetary Nebulae: General, Planetary Nebulae: Individual: Tawe1 To 4

Scientific paper

We present four hitherto unknown planetary nebulae (PNe) candidates that were discovered on Palomar Observatory Sky Survey I (POSS-I) E-prints during a survey for galaxies in the "zone of avoidance" (=galactic plane). All are of low surface brightness, one being at the very limit of visibility on the POSS. Low-dispersion spectra of the brightest object (PNG065.4+03.1) led to the detection of Halpha_, Hbeta_, [OIII], [OI], and [SII], yielded an interstellar extinction of c=0.62, an excitation class of 4 to 5, and a radial velocity V_hel_=-134+/-90km/s that represents one of the most extreme velocities in this galactic longitude range.

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