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- Centre National de la Recherche ScientifiqueFR348 papers
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5 papers · 2 filters
Calibration of Nebular Emission-Line Diagnostics: I. Stellar Effective Temperatures
M. S. Oey, M. A. Dopita, J. C. Shields +1
We present a detailed comparison of optical H II region spectra to photoionization models based on modern stellar atmosphere models. We examine both spatially resolved and integrat…
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…
On the Nuclear Rotation Curve of M31
Thomas S. Statler
The nuclear rotation curve of M31, as observed by the Hubble Space Telescope Faint Object Camera Spectrograph, shows a significant disturbance coinciding with the off-center bright…
The Nuclear Spectral Energy Distribution of NGC 4395, The Least Luminous Type 1 Seyfert Galaxy
E. C. Moran, A. V. Filippenko, L. C. Ho +5
We present X-ray (ROSAT), infrared, and radio observations of NGC 4395, which harbors the optically least luminous type 1 Seyfert nucleus discovered thus far. In combination with p…
Physical Conditions in the Emission Line Gas in the Extremely Low Luminosity Seyfert Nucleus of NGC 4395
Steven B. Kraemer, Luis C. Ho, D. Michael Crenshaw +2
We have combined Hubble Space Telescope/Faint Object Spectrograph, ground-based, and Infrared Space Observatory spectra of the nucleus of NGC 4395, the least luminous and nearest k…