An [O iii] search for extended emission around AGN with H i mapping: a distant cloud ionized by Mkn 1
An [O iii] search for extended emission around AGN with H i mapping: a distant cloud ionized by Mkn 1
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[O-iii] 使用 H-i 映射搜索 AGN 周围的扩展发射:由 Mkn 1 电离的遥远云
DOI:
10.1093/mnras/staa1510
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发表时间:
2020
影响因子:
4.8
通讯作者:
Dodonov, Sergei N
中科院分区:
文献类型:
--
作者:
Knese, Erin Darnell;Keel, William C;Knese, Greg;Bennert, Vardha N;Moiseev, Alexei;Grokhovskaya, Aleksandra;Dodonov, Sergei N
Motivated by the discovery of large ionized clouds around AGN, and particularly the large fraction of those that are consistent with photoionized gaseous tidal debris, we searched for [Oiii] emission around Seyfert galaxies previously mapped in Hi, many with extended gas features. Of 26 Seyfert galaxies, we find one spatially extended emission feature, a discrete cloud projected ≈12 kpc SW from the centre of Mkn 1 and spanning a transverse extent of 8 kpc. Optical spectroscopy (Kast/Lick and SCORPIO/BTA) of this cloud confirms its association with the Mkn 1–NGC 451 galaxy pair, closely matching the kinematics of nearby Histructures, and reveals emission-line ratios requiring photoionization by the AGN at roughly the direct observed luminosity of the nucleus. For the entire sample, the full opening angle of the ionization cones (bicones) must be <20° if the AGNs are continuously bright for scales longer than the light-traveltimes to the Histructures. Since typical AGN ionization cones are observed to be much broader than this, our low detection fraction may add to evidence for the ubiquity of strong variations in AGN luminosity on scales 104–105yr.
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DOI:
10.1134/1.1883351
发表时间:
2005
期刊:
Astronomy Letters
影响因子:
--
作者:
Afanasiev V L;Moiseev A V
通讯作者:
Moiseev A V
DOI:
10.3847/1538-4357/aa9613
发表时间:
2017
期刊:
The Astrophysical Journal
影响因子:
--
作者:
Tayal, S. S.;Zatsarinny, O.
通讯作者:
Zatsarinny, O.
DOI:
--
发表时间:
2002
期刊:
影响因子:
--
作者:
A. Omar;K. Dwarakanath;M. Rupen;K. Institute;Bangalore;India. National Radio Astronomy Observatory;Socorro;Usa
通讯作者:
Usa
DOI:
--
发表时间:
1985
期刊:
影响因子:
--
作者:
W. Keel
通讯作者:
W. Keel
DOI:
10.3847/1538-4357/835/2/256
发表时间:
2016-12
期刊:
The Astrophysical Journal
影响因子:
--
作者:
W. Keel;C. Lintott;W. Maksym;V. Bennert;S. Chojnowski;A. Moiseev;A. Smirnova;K. Schawinski;L. Sartori;C. Urry;A. Pancoast;M. Schirmer;B. Scott;Charles Showley;K. Flatland
通讯作者:
W. Keel;C. Lintott;W. Maksym;V. Bennert;S. Chojnowski;A. Moiseev;A. Smirnova;K. Schawinski;L. Sartori;C. Urry;A. Pancoast;M. Schirmer;B. Scott;Charles Showley;K. Flatland