Spectroscopy of the protoplanetary nebula AFGL 618.

Details Spectroscopy of the protoplanetary nebula AFGL 618. Spectroscopy of the protoplanetary nebula AFGL 618.

Sep 1997

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1997a%26a...325..277b&link_type=abstract

Astronomy and Astrophysics, v.325, p.277-281

Astronomy and Astrophysics

Astrophysics

3

Planetary Nebulae: Afgl 618, Stars: Agb, Post: Agb

Scientific paper

We report on new optical spectroscopic observations of the
protoplanetary nebula AFGL 618. Compared to older observations we find a
change in some emission line ratios indicating dynamical evolutionary
processes during the last few years. Possible reasons for this behaviour
are discussed.

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