Astronomy and Astrophysics – Astronomy
Scientific paper
Jul 1989
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1989a%26a...218..264p&link_type=abstract
Astronomy and Astrophysics (ISSN 0004-6361), vol. 218, no. 1-2, July 1989, p. 264-266.
Astronomy and Astrophysics
Astronomy
6
Color-Color Diagram, Infrared Photometry, Infrared Sources (Astronomy), Near Infrared Radiation, Planetary Nebulae, Astronomical Catalogs, Infrared Astronomy Satellite, Radio Emission, Thermal Emission
Scientific paper
New J, H, K photometry of 26 compact southern planetary nebulae is
presented. Fourteen objects are sources that were classified as S-type
by Persi et al. (1987), while 12 objects are observed for the first
time. The new near-IR observations suggest that approximately 2/3 of the
sources previously classified as S-type are in effect N-type sources.
Persi Paolo
Preite-Martinez Andrea
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