Ultraviolet observations of M1-2 (= VV 8)

Details Ultraviolet observations of M1-2 (= VV 8) Ultraviolet observations of M1-2 (= VV 8)

Dec 1983

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1983apj...275..628f&link_type=abstract

Astrophysical Journal, Part 1 (ISSN 0004-637X), vol. 275, Dec. 15, 1983, p. 628-635.

Astronomy and Astrophysics

Astronomy

22

Astronomical Spectroscopy, Planetary Nebulae, Supergiant Stars, Ultraviolet Astronomy, Binary Stars, Emission Spectra, Iue, Spaceborne Astronomy, Stellar Envelopes

Scientific paper

First IUE spectrograms of the peculiar emission-line object M1-2 (= VV 8) are presented. In the wavelength region 1150-3200 A this object is characterized by emission lines superposed on a moderately strong continuum. Some ultraviolet and optical properties of M1-2 are discussed in the context of symbiotic stars and protoplanetary and planetary nebulae. An E(B-V) extinction of 0.37 mag is obtained from the ratio of the He II flux at 1640 and 4686 A and is compared with values derived from other parameters. The ultraviolet observations suggest that M1-2 is a young, high-density planetary nebula of excitation class 5 or 6 with characteristics similar to IC 4997.

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