Emission Line Gas in LINER-type Galaxies:\\Physical Conditions and Kinematics

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Session 46 -- Seyfert Galaxies and LINERS
Display presentation, Thursday, January 13, 9:30-6:45, Salons I/II Room (Crystal Gateway)

[46.13] Emission Line Gas in LINER-type Galaxies:\\Physical Conditions and Kinematics

S.E. Deustua (IGPP/LLNL), A.P. Koratkar (STScI), G. MacAlpine (U.Mich), M. Gregg (UC-Davis)

In terms of activity in the nucleus, LINER-like galaxies form an important link between giant HII region galaxies and low-luminosity Seyferts. Despite their large numbers and evolutionary significance, we do not know whether these galaxies form a homogeneous class of objects; nor do we know how the distribution, and kinematics of the emission-line gas are affected by the properties of the central engine, if present.

To address these issues we have constructed a large sample of nearby galaxies with LINER-like characteristics. While studies of individual "LINERS" have led to a certain understanding of the phenomemon, these studies have not provided a global framework, thus requiring a statistically large sample.

Here we present the kinematic and spectroscopic results of a sub-sample of galaxies obtained at the Michigan-Dartmouth-M.I.T. Observatory. The information gleaned from spectroscopic data, when combined with data at other wavelengths, will enable a thorough investigation into the nature of low luminosity nuclear activity.

The research in this work was partially supported by a grant from the California Space Institute.

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