The highly ionized, high-velocity gas in NGC 6231
نویسندگان
چکیده
منابع مشابه
Highly Ionized High Velocity Clouds
We have recently used the Hubble Space Telescope to study a pair of high velocity clouds in the direction of Mrk 509 that have unusual ionization properties. They exhibit strong C iv absorption with little or no low ion absorption or H i 21 cm emission. As the closest known analog to the outer diffuse halos of damped Lyα absorbers and the low N(H i) metal line absorption systems seen in the spe...
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We present a Far-Ultraviolet Spectroscopic Explorer survey of highly ionized high-velocity clouds (HVCs) in 66 extragalactic sight lines with S/N1030 >8. We searched the spectra for high-velocity (100 < |vLSR| < 400km s ) O VI absorption and found a total of 63 absorbers, 16 with 21 cmemitting H I counterparts and 47 “highly ionized” absorbers without 21 cm emission. The highly ionized HVC popu...
متن کاملHighly - Ionized High - Velocity Gas In the Vicinity of the Galaxy
Space Telescope Science Institute, 3700 San Martin Dr., Baltimore, MD 21218 ([email protected] Department of Astronomy, University of Wisconsin, 475 N. Charter St., Madison, WI 53706 Current address: Observatorio Astrofisico di Arcetri, Largo E. Fermi 5, Florence, Italy Center for Astrophysics and Space Astronomy, Department of Astrophysical and Planetary Sciences, University of Colorado, Bould...
متن کاملHighly Ionized High Velocity Clouds: Intergalactic Gas in the Local Group or Distant Gas in the Galactic Halo?
In the course of our studies of the gaseous halo surrounding the Milky Way, we have recently identified several high velocity (VLSR < -100 km s ) clouds in the directions of Mrk 509 and PKS 2155-304 that have unusual ionization properties. The clouds exhibit strong C IV absorption with little or no detectable low ion (C II, Si II) absorption or H I 21 cm emission down to very sensitive levels. ...
متن کاملHighly ionized iron absorption lines from outflowing gas in the X - ray spectrum of NGC 1365
We present the discovery of four absorption lines in the X-ray spectrum of the Seyfert Galaxy NGC 1365, at energies between 6.7 and 8.3 keV. The lines are detected with high statistical confidence (from > 20σ for the strongest to ∼ 4σ for the weakest) in two XMM-Newton observations 60 ksec long. We also detect the same lines, with lower signal-to-noise (but still > 2σ for each line) in two prev...
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ژورنال
عنوان ژورنال: Monthly Notices of the Royal Astronomical Society
سال: 2016
ISSN: 0035-8711,1365-2966
DOI: 10.1093/mnras/stw2762