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GALAXIES ON DIET: FEEDBACK SIGNATURES IN RADIO-AGN HOST GALAXIES KCI 등재

  • 언어ENG
  • URLhttps://db.koreascholar.com/Article/Detail/384327
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천문학논총 (Publications of the Korean Astronomical Society)
한국천문학회 (Korean Astronomical Society)
초록

There exists strong evidence supporting the co-evolution of central supermassive black holes and their host galaxies; however it is still under debate how such a relation comes about and whether it is relevant for all or only a subset of galaxies. An important mechanism connecting AGN to their host galaxies is AGN feedback, potentially heating up or even expelling gas from galaxies. AGN feedback may hence be responsible for the eventual quenching of star formation and halting of galaxy growth. A rich multi- wavelength dataset ranging from the X-ray regime (Chandra), to far-IR (Herschel), and radio (WSRT) is available for the North Ecliptic Pole field, most notably surveyed by the AKARI infrared space telescope, covering a total area on the sky of 5.4 sq. degrees. We investigate the star formation properties and possible signatures of radio feedback mechanisms in the host galaxies of 237 radio sources below redshift z = 2 and at a radio 1.4 GHz ux density limit of 0.1 mJy. Using broadband SED modelling, the nuclear and host galaxy components of these sources are studied simultaneously as a function of their radio luminosity. Here we present results concerning the AGN content of the radio sources in this eld, while also offering evidence showcasing a link between AGN activity and host galaxy star formation. In particular, we show results supporting a maintenance type of feedback from powerful radio-jets.

목차
ABSTRACT
1. AGN AS REGULATORS OF COSMIC GROWTH
2. NEP field and the spectral energy distributions of radio-AGN
3. RADIO-AGN AND THE &quat;MAIN SEQUENCE&quat; OFSTAR FORMATION
4. RADIO-JETS AS REGULATORS OF SF
REFERENCES
저자
  • Marios Karouzos(Department of Physics and Astronomy, Seoul National University)
  • Myungshin Im(Department of Physics and Astronomy, Seoul National University)
  • Markos Trichas(Airbus Defence and Space, Gunnels Wood Road)
  • Tomogotsu Goto(Department of Physics, National Tsing Hua University)
  • Matthew Malkan(Division of Astronomy and Astrophysics)
  • Angel Ruiz(Inter-University Centre for Astronomy and Astrophysics (IUCAA))
  • Yiseul Jeon(Department of Physics and Astronomy, Seoul National University)
  • Ji Hoon Kim(Subaru Telescope, National Astronomical Observatory of Japan)
  • Hyung Mok Lee(Department of Physics and Astronomy, Seoul National University)
  • Seong Jin Kim(Department of Physics and Astronomy, Seoul National University)
  • Nagisa Oi(Institute of Space and Astronautical Science, JAXA)
  • Hideo Matsuhara(Institute of Space and Astronautical Science, JAXA)
  • Toshinobu Takagi(Institute of Space and Astronautical Science, JAXA)
  • Kazumi Murata(Institute of Space and Astronautical Science, JAXA)
  • Takehiko Wada(Institute of Space and Astronautical Science, JAXA)
  • Kensuke Wada(Institute of Space and Astronautical Science, JAXA)
  • Hyunjin Shim(Department of Earth Science Education, Kyungpook National University)
  • Hitoshi Hanami(Physics Section, Faculty of Humanities, Iwate University)
  • Stephen Serjeant(Department of Physics & Astronomy, The Open University/RALSpace, Science and Technology Facilities Council, Rutherford Appleton Laboratory)
  • Youichi Ohyama(Academia Sinica, Institute of Astronomy and Astrophysics)