NASA/IPAC EXTRAGALACTIC DATABASE
Date and Time of the Query: 2019-08-25 T18:54:14 PDT
Help | Comment | NED Home

For refcode 2012A&A...548A..93V:
Retrieve 22 NED objects in this reference.
Please click here for ADS abstract

NED Abstract

Copyright by European Southern Observatory (ESO). Reproduced by permission
2012A&A...548A..93V A relation between circumnuclear H I, dust, and optical cores in low-power radio galaxies van Bemmel, I. M.; Morganti, R.; Oosterloo, T.; van Moorsel, G. Abstract. From new observations and literature data we investigate the presence of H I, dust, and optical cores in the central kiloparsec of low-power radio galaxies. The goal of this pilot study is to identify physical relations between these components, which can help us to study kinematics and feeding mechanisms in future samples of active galaxies. Our results are consistent with neutral gas being associated with dust on sub-kiloparsec scales. Objects that have H I absorption always have significant amounts of dust in their host galaxy. If there is no visible dust in the host galaxy, there is also no H I absorption. The presence of an unresolved optical core correlates with the H I column density, with the core being absent in high-column density sources. This work opens a path for studying the kinematics of cold material in the central regions of active galaxies by combining information of H I absorption and molecular lines. Consistent with previous work, we find no evidence for a compact, parsec-scale obscuring torus in low-power radio galaxies. Key words: galaxies: active, radio lines: galaxies, radio lines: ISM, radio continuum: galaxies, galaxies: ISM, galaxies: evolution
Retrieve 22 NED objects in this reference.
Please click here for ADS abstract

Back to NED Home