Astronomy and Astrophysics – Astrophysics – Cosmology and Extragalactic Astrophysics
Scientific paper
2010-12-08
Astronomy and Astrophysics
Astrophysics
Cosmology and Extragalactic Astrophysics
5 pages in emulateapj; ApJL vol. 726, 2011 January 10; v2: minor cosmetic corrections to text to match published version
Scientific paper
10.1088/2041-8205/726/2/L21
NGC 3147, NGC 4698 and 1ES 1927+654 are active galaxies that are classified as Seyfert 2s, based on the line ratios of strong narrow emission lines in their optical spectra. However, they exhibit rapid X-ray spectral variability and/or little indication of obscuration in X-ray spectral fitting, contrary to expectation from the active galactic nucleus (AGN) unification model. Using optical spectropolarimetry with LRIS and near-infrared spectroscopy with NIRSPEC at the W. M. Keck Observatory, we conducted a deep search for hidden polarized broad H-alpha and direct broad Pa-beta or Br-gamma emission lines in these objects. We found no evidence for any broad emission lines from the active nucleus of these galaxies, suggesting that they are unobscured, completely "naked" AGNs that intrinsically lack broad-line regions.
Lyke James E.
Mader Jeff A.
Tran Hien D.
No associations
LandOfFree
Indecent Exposure in Seyfert 2 Galaxies: A Close Look does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Indecent Exposure in Seyfert 2 Galaxies: A Close Look, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Indecent Exposure in Seyfert 2 Galaxies: A Close Look will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-76110