Echelle spectroscopy of SN 1986G in NGC 5128 - complex Na absorption and interstellar diffuse bands

Journal Article · Tue Sep 01 00:00:00 EDT 1987 · Astron. J.; (United States)

DOI:https://doi.org/10.1086/114501· OSTI ID:5839326

Rich, R M

Spectroscopy at 0.3 A resolution of the Type Ia supernova 1986G in NGC 5128 has resolved the Na absorption due to NGC 5128 into four components with velocities of 374, 412, 453, and 483 km/s. A fit to the line profiles shows each component to have a column density of about 10 to the 13th/sq cm. The absorption is found to agree well with the velocity structure of the ionized gas in the disk of NGC 5128, and is interpreted to arise from a line of sight that passes through the entire disk of NGC 5128. Interstellar diffuse bands at 5780.4, 5797.0, 6283.9, and 6613.6 A are also positively identified as arising in the dust lane. 17 references.

• Research Organization: Carnegie Institution of Washington, Washington, DC
• OSTI ID: 5839326
• Journal Information: Astron. J.; (United States), Journal Name: Astron. J.; (United States) Vol. 94; ISSN ANJOA
• Country of Publication: United States
• Language: English

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640102* -- Astrophysics & Cosmology-- Stars & Quasi-Stellar
Radio & X-Ray Sources
71 CLASSICAL AND QUANTUM MECHANICS
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ABSORPTION SPECTRA
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COSMIC DUST
DUSTS
ELEMENTS
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FLUIDS
GALAXIES
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