Zobrazeno 1 - 10
of 32
pro vyhledávání: '"Kay, Laura E."'
We have discovered an extremely broad, double-peaked H-alpha emission line in the polarized flux spectrum of NGC 2110, establishing that this well-studied Seyfert 2 galaxy contains a disk-like hidden broad-line region (BLR). Several properties of NGC
Externí odkaz:
http://arxiv.org/abs/0708.3221
Publikováno v:
Astron.J.134:1263-1275,2007
We have compared the X-ray--to--optical flux ratios (F_x/F_opt) of absorbed active galactic nuclei (AGNs) in the Chandra Deep Field North (CDF-N) with those of nearby, optically classified Seyfert 2 galaxies. The comparison provides an opportunity to
Externí odkaz:
http://arxiv.org/abs/0706.1777
Autor:
Kishimoto, Makoto, Kay, Laura E., Antonucci, Robert, Hurt, Todd W., Cohen, Ross D., Krolik, Julian H.
We present the results of UV imaging polarimetry of the Seyfert 2 galaxy Mrk 477 taken by the Faint Object Camera onboard the Hubble Space Telescope (HST). From a previous HST UV image (lambda ~ 2180A), Mrk 477 has been known to have a pointlike brig
Externí odkaz:
http://arxiv.org/abs/astro-ph/0112520
Autor:
Kishimoto, Makoto, Kay, Laura E., Antonucci, Robert, Hurt, Todd W., Cohen, Ross D., Krolik, Julian H.
We present UV imaging polarimetry data of the Seyfert 2 galaxy Mrk 3 taken by the Hubble Space Telescope. The polarized flux is found to be extended to ~1 kpc from the nucleus, and the position angles of polarization are centrosymmetric, confirming t
Externí odkaz:
http://arxiv.org/abs/astro-ph/0110101
We present a composite 1-10 keV Seyfert 2 X-ray spectrum, derived from ASCA observations of a distance-limited sample of nearby galaxies. All 29 observed objects were detected. Above ~3 keV, the composite spectrum is inverted, confirming that Seyfert
Externí odkaz:
http://arxiv.org/abs/astro-ph/0106519
The X-ray spectra of two intermediate type Seyfert galaxies are investigated using ASCA observations separated by more than a year. Both NGC 4388 and ESO 103-G35 exhibit strong, narrow Fe K alpha line emission and absorption by cold neutral gas with
Externí odkaz:
http://arxiv.org/abs/astro-ph/9903424
We observed the narrow-line Seyfert 1 galaxies IRAS 20181-2244 and IRAS 13324-3809 with a new spectropolarimeter on the RC spectrograph at the CTIO 4m telescope. Previously it had been suggested that IRAS 20181-2244 was a Type 2 QSO and thus might co
Externí odkaz:
http://arxiv.org/abs/astro-ph/9901308
Autor:
Kay, Laura E., Moran, Edward C.
We have detected a broad H alpha 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
Externí odkaz:
http://arxiv.org/abs/astro-ph/9807248
We report the detection of ionized absorption in the ASCA spectrum of the narrow-line Seyfert 1 galaxy IRAS 17020+4544. Subsequent optical spectropolarimetry revealed high polarization increasing from 3% in the red to 5% in the blue, indicating elect
Externí odkaz:
http://arxiv.org/abs/astro-ph/9709097
Autor:
Tran, Hien D., Kay, Laura E.
Publikováno v:
AIP Conference Proceedings; May1992, Vol. 254 Issue 1, p504-507, 4p
