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The Multitude of Unresolved Continuum Sources at 1.6 microns in Hubble Space Telescope images of Seyfert Galaxies
A. C. Quillen, Colleen McDonald, A. Alonso-Herrero +4
We examine 112 Seyfert galaxies observed by the Hubble Space Telescope (HST) at 1.6 microns. We find that ~50% of the Seyfert 2.0 galaxies which are part of the Revised Shapeley-Am…
The Variability of Seyfert 1.8 and 1.9 Galaxies at 1.6 microns
A. C. Quillen, Shanna Shaked, A. Alonso-Herrero +4
We present a study of Seyfert 1.5-2.0 galaxies observed at two epochs with the Hubble Space Telescope (HST) at 1.6 microns. We find that unresolved nuclear emission from 9 of 14 nu…
Extreme Star Formation in the Interacting Galaxy Arp299 (IC694 + NGC3690)
A. Alonso-Herrero, G. H. Rieke, M. J. Rieke +1
We present a comprehensive study of the star-formation properties of the infrared luminous galaxy Arp299 (IC694 + NGC3690). The observations include HST/NICMOS imaging and MMT opti…
Discovery of a nuclear gas bar feeding the active nucleus in Circinus
R. Maiolino, A. Alonso-Herrero, S. Anders +4
We report the discovery of gas inflow motions towards the active nucleus of the Circinus galaxy caused by the non-axisymmetric potential of a nuclear gas bar. Evidence for dust ass…
The Nature of LINERs
Almudena Alonso-Herrero, Marcia J. Rieke, George H. Rieke +1
We present -band (m) spectroscopy of a sample of nine galaxies showing some degree of LINER activity (classical LINERs, weak-[O {\sc i}] LINERs and transition objec…
NICMOS Imaging of Molecular Hydrogen Emission in Seyfert Galaxies
A. C. Quillen, A. Alonso-Herrero, M. J. Rieke +3
We present NICMOS imaging of broad band and molecular hydrogen emission in Seyfert galaxies. In 6 of 10 Seyferts we detect resolved or extended emission in the 1-0 S(1) 2.121 or 1-…