Approaching NGC 3079 with VLBI

被引：0
|
作者：
Middelberg, E [1 ]
Krichbaum, TP [1 ]
Roy, AL [1 ]
Witzel, A [1 ]
Zensus, JA [1 ]
机构：
[1] Max Planck Inst Radioastron, D-5300 Bonn, Germany
来源：
Future Directions in High Resolution Astronomy: The 10th Anniversary of the VLBA | 2005年 / 340卷
关键词：
D O I：
暂无
中图分类号：
P1 [天文学];
学科分类号：
0704 ;
摘要：
The Seyfert 2 galaxy NGC 3079 is one of the nearest radio-weak AGN. We have carried out multi-frequency, multi-epoch VLBI observations of this object and detected new components, proper motion of the order of 0.1 c, strong spectral variability, and free-free absorption. Based on phase-referenced astrometry, we suggest a new identification of components seen at 1.7 GHz. Our results suggest that the nucleus in NGC3079 is embedded in a dense medium which strongly affects the radio appearance of the AGN ejecta. We supplement our work with Seyfert VLBI observations taken from the literature.
引用
收藏
页码：140 / 144
页数：5
相关论文
共 50 条
  • [31] GALEX UV Spectroscopy of Extended Objects: The Case of NGC 3079
    Gonzalez, Daniel Rosa
    Buat, Veronique
    Burgarella, Denis
    Boissier, Samuel
    Boselli, Alessandro
    de Paz, Armando Gil
    NEW QUESTS IN STELLAR ASTROPHYSICS II: ULTRAVIOLET PROPERTIES OF EVOLVED STELLAR POPULATIONS, 2009, : 109 - +
  • [32] SPIRAL AND IRREGULAR GALAXIES AT 2.7 AND 8.1 GHZ IV - NGC 3079 AND NGC4490
    SEAQUIST, ER
    DAVIS, L
    BIGNELL, RC
    ASTRONOMY & ASTROPHYSICS, 1978, 63 (1-2) : 199 - 208
  • [33] Proper motion of a nuclear jet relative to a maser feature in NGC 3079
    Sawada-Satoh, S
    Inoue, M
    Shibata, KM
    Kameno, S
    Nakai, N
    Migenes, V
    Diamond, PJ
    COSMIC MASERS: FROM PROTOSTARS TO BLACKHOLES, 2002, (206): : 404 - 407
  • [34] ISOPHOT far-infrared photometry of NGC3079
    Klaas, U
    Walker, HJ
    ASTRONOMY & ASTROPHYSICS, 2002, 391 (03) : 911 - 915
  • [35] BIPOLAR OUTFLOW OF GAS IN THE SPIRAL GALAXY NGC-3079
    DURIC, N
    SEAQUIST, ER
    CANADIAN JOURNAL OF PHYSICS, 1986, 64 (04) : 531 - 535
  • [36] Water maser emission and the parsec-scale jet in NGC 3079
    Trotter, AS
    Greenhill, LJ
    Moran, JM
    Reid, MJ
    Irwin, JA
    Lo, KY
    ASTROPHYSICAL JOURNAL, 1998, 495 (02): : 740 - 748
  • [37] AKARI infrared observations of the edge-on spiral galaxy NGC 3079
    Graduate School of Science, Nagoya University, Chikusa-ku, Nagoya 464-8602, Japan
    不详
    不详
    Publ. Astron. Soc. Jpn., 1600, 4 (1085-1092):
  • [38] Water maser emission and the parsec-scale jet in NGC 3079
    Trotter, AS
    Moran, JM
    Greenhill, LJ
    RADIO EMISSION FROM GALACTIC AND EXTRAGALACTIC COMPACT SOURCES, 1998, 144 : 239 - 240
  • [39] Jet-cloud collisions in the jet of the Seyfert galaxy NGC 3079
    Middelberg, E.
    Agudo, I.
    Roy, A. L.
    Krichbaum, T. P.
    MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY, 2007, 377 (02) : 731 - 740
  • [40] AKARI Infrared Observations of the Edge-On Spiral Galaxy NGC 3079
    Yamagishi, Mitsuyoshi
    Kaneda, Hidehiro
    Ishihara, Daisuke
    Komugi, Shinya
    Suzuki, Toyoaki
    Onaka, Takashi
    PUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF JAPAN, 2010, 62 (04) : 1085 - 1092
12345