NGC 3147: a ‘true’ type 2 Seyfert galaxy without the broad-line region
نویسندگان
چکیده
منابع مشابه
A Hidden Broad - Line Region in the Weak Seyfert 2 Galaxy NGC 788
We have detected a broad Hα emission line in the polarized flux spectrum of the Seyfert 2 galaxy NGC 788, indicating that it contains an obscured Seyfert 1 nucleus. While such features have been observed in ∼ 15 other Seyfert 2s, this example is unusual because it has a higher fraction of galaxy starlight in its spectrum, a lower average measured polarization, and a significantly lower radio lu...
متن کاملDynamics of the Narrow - Line Region in the Seyfert 2 Galaxy Ngc
We present dynamical models based on a study of high-resolution long-slit spectra of the narrow-line region (NLR) in NGC 1068 obtained with the Space Telescope Imaging Spectrograph (STIS) aboard The Hubble Space Telescope (HST). The dynamical models consider the radiative force due to the active galactic nucleus (AGN), gravitational forces from the supermassive black hole (SMBH), nuclear stella...
متن کاملThe Narrow-line Region of Seyfert Galaxies: Narrow-line Seyfert 1s versus Broad-line Seyfert 1s
It is known that the spectral energy distribution (SED) of the nuclear radiation of narrow-line Seyfert 1 galaxies (NLS1s) has different shapes with respect to that of ordinary broad-line Seyfert 1 galaxies (BLS1s), particularly in wavelengths of X-ray. This may cause some differences in the ionization degree and the temperature of gas in narrow-line regions (NLRs) between NLS1s and BLS1s. This...
متن کاملGeometry and Kinematics in the Central Broad - Line Region of a Seyfert 1 Galaxy
We recorded spectra of the highly variable Seyfert 1 galaxy Mrk 110 in a variability campaign with the 9.2m Hobby-Eberly Telescope at McDonald Observatory in order to study the detailed line profile variations of the broad emission lines. Here we show that only an AGN model predicting the formation of the broad Hβ line emission in the wind of an accretion disk matches the observed 2-D variabili...
متن کاملKinematics and morphology of the narrow - line region in the Seyfert galaxy NGC 1386 ?
We present a high spatial and spectral resolution 2-D echelle spectrogram of the Narrow–Line Region in the Seyfert 2 galaxy NGC1386. This Seyfert galaxy was observed with CASPEC in the wavelength range 5270– 7725 Å which covers the Hα and the [N ii] lines. With the use of spatially high resolved images taken with the WFPC2 aboard the Hubble Space Telescope we could identify individual component...
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ژورنال
عنوان ژورنال: Monthly Notices of the Royal Astronomical Society
سال: 2008
ISSN: 0035-8711
DOI: 10.1111/j.1365-2966.2007.12625.x