Abstract
An ultraviolet-excess galaxy Markarian 313 (NGC 7465), which consists of a multiple system with NGC 7463 and NGC 7464, is studied using the low- and high-resolution optical spectrum. Emission lines of Hα, Hβ, [NII], and [OIII] have conspicuous blueward asymmetrical wings or blue slanted profiles in the spectrum of the nuclear region of the galaxy. The width of these emission lines is as broad as ∼600 km s−1 at the zero-intensity level, and the velocity difference between the narrow and broad components is estimated at around 80 km s−1 from the two-component Gaussian profile fitting. This fact could be an evidence of a large-scale dynamical motion in or surrounding the nuclear region of the galaxy, implying that it bears an intermediate characteristic between a Seyfert and a starburst galaxy.
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Maehara, H., Noguchi, T. Markarian 313: An intermediate object between a seyfert and a starburst galaxy. Astrophys Space Sci 143, 339–348 (1988). https://doi.org/10.1007/BF00637145
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DOI: https://doi.org/10.1007/BF00637145