CCD surface photometry of IC 2220

Details CCD surface photometry of IC 2220 CCD surface photometry of IC 2220

May 1991

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1991pasp..103..415w&link_type=abstract

Astronomical Society of the Pacific, Publications (ISSN 0004-6280), vol. 103, May 1991, p. 415-423. NSERC-supported research.

Astronomy and Astrophysics

Astronomy

5

Astronomical Photometry, Charge Coupled Devices, Giant Stars, M Stars, Reflection Nebulae, Color-Color Diagram, Emission Spectra, Interstellar Matter, Milky Way Galaxy

Scientific paper

BVRI color-difference measurements are reported for the unusual bipolar reflection nebula IC 2220 which surrounds an early-M giant. The data were obtained through BVRI imaging with a CCD detector. Analysis of the color difference between the nebula and the illuminating star HR 3126 indicates that the nebular dust, having formed in the outflow from the star, is similar to average interstellar dust. No evidence is found for the presence of extended red emission in this nebula, although there is an indication of nonequilibrium continuum emission. The Milky Way provides a significant amount of external illumination to IC 2220 in B and U.

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