Astronomy and Astrophysics – Astronomy
Scientific paper
May 1987
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1987rmxaa..14..534p&link_type=abstract
(IAU, Reunion Regional Latinoamericana de Astronomia, 5th, Merida, Mexico, Oct. 6-10, 1986) Revista Mexicana de Astronomia y Ast
Astronomy and Astrophysics
Astronomy
12
Astronomical Photometry, Cosmic Dust, Infrared Astronomy, Interstellar Matter, Planetary Nebulae, Color-Color Diagram, Helium Ions, Infrared Spectroscopy, Ionized Gases, Radio Emission
Scientific paper
The authors present near-infrared photometry of 31 compact planetary
nebulae. A correlation of (J-H)0 with He+
abundance is found. Most high density nebulae show infrared excess in H
and K showing that they have warmer dust than lower density nebulae.
Peña Manuel
Torres-Peimbert Silvia
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