Ultraviolet observations of M 1-2 (= VV8).
Abstract
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.
- Publication:
-
The Astrophysical Journal
- Pub Date:
- December 1983
- DOI:
- Bibcode:
- 1983ApJ...275..628F
- Keywords:
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- Astronomical Spectroscopy;
- Planetary Nebulae;
- Supergiant Stars;
- Ultraviolet Astronomy;
- Binary Stars;
- Emission Spectra;
- Iue;
- Spaceborne Astronomy;
- Stellar Envelopes;
- Astrophysics