The structure and spectral characteristics of the low-excitation planetary nebula HD 316248

Details The structure and spectral characteristics of the low-excitation planetary nebula HD 316248 The structure and spectral characteristics of the low-excitation planetary nebula HD 316248

Dec 1985

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1985a%26a...153..245h&link_type=abstract

Astronomy and Astrophysics (ISSN 0004-6361), vol. 153, no. 1, Dec. 1985, p. 245-248.

Astronomy and Astrophysics

Astrophysics

3

Planetary Nebulae, Stellar Evolution, Stellar Spectrophotometry, Visible Spectrum, Emission Spectra, H Ii Regions, Line Spectra

Scientific paper

Analysis of two medium dispersion (39 Å/mm) optical spectra of the compact planetary nebula HD 316248 is reported here. When compared with observations collected in 1968 - 70, the authors' data obtained in 1978 reveal a net increase of the [O III] λλ4959, 5007 line intensities. Furthermore, despite showing unusual emission lines due to [Ti III], the low-excitation spectrum of HD 316248 presents striking similarities with that of a typical H II region. Direct plates taken through broad-band and interference filters at the prime focus of the ESO 3.6 m telescope clearly show that HD 316248 is an elongated (d ≅ 4arcsec.4) and diffuse object as seen in the light of Hα.

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