Mapping the ionised gas around the luminous QSO HE 1029-1401: evidence for minor merger events?
Mapping the ionised gas around the luminous QSO HE 1029-1401: evidence for minor merger events?
复制标题
绘制发光 QSO HE 1029-1401 周围的电离气体图:小型合并事件的证据?
DOI:
10.1051/0004-6361/201014559
复制
发表时间:
2010
影响因子:
6.5
通讯作者:
Wisotzki
中科院分区:
文献类型:
--
作者:
Husemann;Sánchez;Wisotzki
We present VIMOS integral field spectroscopy of the brightest radio-quiet QSO on the southern sky HE 1029-1401 at a redshift ofz= 0.086. Standard decomposition techniques for broad-band imaging are extended to integral field data in order to deblend the QSO and host emission. We perform a tentative analysis of the stellar continuum, finding a young stellar population (<100 Myr) or a featureless continuum embedded in an old stellar population (10 Gyr) typical for a massive elliptical galaxy. The stellar velocity dispersion ofσ*= 320±90 km s-1and the estimated black hole mass log(MBH/) = 8.7±0.3 are consistent with the localMBH–σ*relation within the errors. For the first time, we map the two-dimensional ionised gas distribution and the gas velocity field around HE 1029-1401. While the stellar host morphology is purely elliptical, we find a highly structured distribution of ionised gas out to 16 kpc from the QSO. The gas is highly ionised solely by the QSO radiation and has a significantly lower metallicity than would be expected for the stellar mass of the host, indicating an external origin of the gas most likely due to minor mergers. We find a rotating gas disc around the QSO and a dispersion-dominated non-rotating gas component within the central 3 kpc. At larger distances the velocity field is heavily disturbed, which could be interpreted as another signature of past minor merger events. Alternatively, the arc-like structure seen in the ionised gas might also be indicative of a large-scale expanding bubble, centred on and possibly driven by the active nucleus.
登录
查看更多内容
影响因子:
1.9
作者:
M. Villar;C. Tadhunter;R. Morganti;D. Axon;A. K. IAP;UK Univ.ofSheffield;Itto. di Radioastronomia ;Italy;UK UniversityofHertfordshire;STScI Baltimore;Usa
通讯作者:
Usa
DOI:
--
发表时间:
1984
期刊:
影响因子:
--
作者:
T. Boroson;J. B. Oke
通讯作者:
J. B. Oke
DOI:
--
发表时间:
2003
期刊:
影响因子:
--
作者:
K. Jahnke;L. Wisotzki
通讯作者:
L. Wisotzki
影响因子:
6
作者:
S. Sánchez;B. García;K. Jahnke;E. Mediavilla;J. Gonzalez;L. Christensen;L. Wisotzki
通讯作者:
L. Wisotzki
DOI:
10.1086/423234
发表时间:
2004-03
期刊:
--
影响因子:
--
作者:
S. F. Sanchez;K. Jahnke;L. Wisotzki;D. H. McIntosh;E. F. Bell;M. Barden;Svw V. W. Beckwith;A. Borch;J. Caldwell;B. Haeussler;B. Häußler;S. Jogee;K. Meisenheimer;C. Y. Peng;H. Rix;R. S. Somerville;C. Wolf
通讯作者:
S. F. Sanchez;K. Jahnke;L. Wisotzki;D. H. McIntosh;E. F. Bell;M. Barden;Svw V. W. Beckwith;A. Borch;J. Caldwell;B. Haeussler;B. Häußler;S. Jogee;K. Meisenheimer;C. Y. Peng;H. Rix;R. S. Somerville;C. Wolf