Demographics and physics of active supermassive black holes

2014 Fiscal Year Research-status Report

• Project/Area Number: 26800098
• Research Institution: The University of Tokyo
• Principal Investigator: SCHULZE ANDREAS 東京大学, カブリ数物連携宇宙研究機構, 特任研究員 (60721842)
• Project Period (FY): 2014-04-01 – 2017-03-31
• Keywords: AGN evolution / SMBH growth / AGN downsizing

Outline of Annual Research Achievements

I finished an ongoing research project, directly addressing the goals of the grant project, cosmic evolution of the supermassive black hole population, on studying the active BH mass and accretion rate function and its evolution out to z～2, utilizing AGN samples in the COSMOS, VVDS and SDSS. This work was published in FY2014. The study established these distribution functions down to the typical mass and accretion rate regime, and revealed BH mass as the main driver of the well known AGN downsizing trend, seen the AGN luminosity function.
I contributed as a co-author to 3 papers, which studied the demographics of the AGN population in context to their host galaxies, their dark matter halos and their co-evolution.
As described in the research plan, I analyzed near-IR spectroscopic data from FMOS of AGN in the COSMOS field. I modeled the Halpha and Hbeta emission line regions, investigated the broad and narrow emission line properties and compiled a black hole mass catalog. The analysis is ongoing and a paper is in preparation, to be published in FY2015.
I successfully applied for observing time with Subaru/HSC to obtain deep imaging of the HETDEX main field, with 1 night allocated in S15A in May. This imaging is essential for the HETDEX main goal, namely the cosmology, but also for the AGN study I plan to carry out. In this context, I established a new collaboration between the HETDEX team and the Japanese community, with Masami Ouchi (ICRR, UTokyo) and his group, who will together with myself be responsible for obtaining, reducing and analyzing the HSC imaging data.

Current Status of Research Progress

2: Research has progressed on the whole more than it was originally planned.

Reason

I published an important paper on the growth and demographics of the active black hole population, based on the COSMOS sample, which will also lead the path for demographic AGN studies within HETDEX and beyond. I have analyzed the FMOS data as outlined in the proposal. A publication on the broad line properties is in preparation and we currently carry out the analysis of the narrow line properties.
Due to technical issues of the HETDEX survey itself, we could not start work on these data. We therefore started another project, studying the z～1.4 population of LoBAL QSOs.

Strategy for Future Research Activity

The start of the HETDEX survey has been delayed by at least one year, compared to the statement in the proposal, due to technical problems in the telescope upgrade. It is now expected to start in mid 2015. The first year dataset will thus only be available in mid-2016. While I will start work on the initial HETDEX data, as outlined in the proposal for FY2014, at the moment I do not expect to achieve a publication on the HETDEX data itself during FY2015.
I will work together with Masami Ouchi and a student on our initiated HSC imaging survey of the HETDEX field. The student will here take the lead on the data reduction and analysis and I will conduct the observation and supervise him together with Ouchi-san.
I will continue and finish the work on the FMOS AGN data set, which will be presented in at least one publication within FY2015.
Furthermore, I started an additional project in the context of the goals of my proposal, by obtaining near-IR spectroscopy of an interesting AGN subclass, LoBAL QSOs at z～1.4. I am currently analyzing the data and expect a publication in FY2015.

Research Products

• [Journal Article] The cosmic growth of the active black hole population at 1 <z <2 in zCOSMOS, VVDS and SDSS (2015)
  • Author(s): Schulze, A.; Bongiorno, A.; Gavignaud, I.; Schramm, M.; Silverman, J.; Merloni, A.; Zamorani, G.; Hirschmann, M.; Mainieri, V.; Wisotzki, L.; Shankar, F.; Fiore, F.; Koekemoer, A. M.; Temporin, G.
  • Journal Title: Monthly Notices of the Royal Astronomical Society Volume: 447 Pages: 2085-2111
  • DOI: 10.1093/mnras/stu2549
  • Peer Reviewed / Open Access
• [Journal Article] The Sloan Digital Sky Survey Reverberation Mapping Project: No Evidence for Evolution in the M-sigma Relation to z～1 (2015)
  • Author(s): Shen,Yue; Greene,Jenny E.; Ho,Luis C.; Brandt,W. N.; Denney,Kelly D.; Horne,Keith; Jiang,Linhua; Kochanek,Christopher S.; McGreer,Ian D.; Merloni,Andrea; Peterson,Bradley M.; Petitjean,Patrick; Schneider,Donald P.; Schulze,Andreas; Strauss,Michael A.; Tao,Charling; Trump,Jonathan R.; Pan,Kaike; Bizyaev,Dmitry
  • Journal Title: The Astrophysical Journal Volume: 印刷中 Pages: 印刷中
  • Peer Reviewed / Open Access
• [Journal Article] The dark matter haloes of moderate luminosity X-ray AGN as determined from weak gravitational lensing and host stellar masses (2015)
  • Author(s): Leauthaud, Alexie; J. Benson, Andrew; Civano, Francesca; L. Coil, Alison; Bundy, Kevin; Massey, Richard; Schramm, Malte; Schulze, Andreas; Capak, Peter; Elvis, Martin; Kulier, Andrea; Rhodes, Jason
  • Journal Title: Monthly Notices of the Royal Astronomical Society Volume: 446 Pages: 1874-1888
  • DOI: 10.1093/mnras/stu2210
  • Peer Reviewed / Open Access
• [Journal Article] The MBH-M* relation for X-ray-obscured, red QSOs at 1.2 < z < 2.6 (2014)
  • Author(s): Bongiorno, A.; Maiolino, R.; Brusa, M.; Marconi, A.; Piconcelli, E.; Lamastra, A.; Cano-Diaz, M.; Schulze, A.; Magnelli, B.; Vignali, C.; Fiore, F.; Menci, N.; Cresci, G.; La Franca, F.; Merloni, A.
  • Journal Title: Monthly Notices of the Royal Astronomical Society Volume: 443 Pages: 2077-2091
  • DOI: 10.1093/mnras/stu1248
  • Peer Reviewed / Open Access
• [Presentation] The cosmic growth of the active black hole population (2015)
  • Author(s): Andreas Schulze
  • Organizer: Conference “Unveiling the AGN-galaxy evolution connection”
  • Place of Presentation: Puerto Varas, Chile
  • Year and Date: 2015-03-09 – 2015-03-13
• [Presentation] The cosmic growth of the active black hole population out to z=2 (2015)
  • Author(s): Andreas Schulze
  • Organizer: OAR Seminar
  • Place of Presentation: INAF-OAR, Rome, Italy
  • Year and Date: 2015-02-03 – 2015-02-03
• [Presentation] The cosmic growth of the active black hole population out to z=2 (2015)
  • Author(s): Andreas Schulze
  • Organizer: INAF-OABO Seminar
  • Place of Presentation: INAF-Osservatorio Astronomico di Bologna, Italy
  • Year and Date: 2015-01-28 – 2015-01-28
• [Presentation] The cosmic growth of the active black hole population out to z=2 (2015)
  • Author(s): Andreas Schulze
  • Organizer: MPE High-Energy Group Seminar
  • Place of Presentation: MPE, Garching, Germany
  • Year and Date: 2015-01-26 – 2015-01-26
• [Presentation] The cosmic growth of the active black hole population (2015)
  • Author(s): Andreas Schulze
  • Organizer: MPIA Galaxy Coffee
  • Place of Presentation: MPIA, Heidelberg, Germany
  • Year and Date: 2015-01-22 – 2015-01-22
• [Presentation] The cosmic growth of the active black hole population (2014)
  • Author(s): Andreas Schulze
  • Organizer: Workshop “Evolution of SMBHs with HSC: First results from initial dataset”
  • Place of Presentation: ASIAA, Taipei, Taiwan
  • Year and Date: 2014-12-18 – 2014-12-20
• [Presentation] The cosmic growth of the active black hole population (2014)
  • Author(s): Andreas Schulze
  • Organizer: Workshop “AGN versus star formation: the fate of the gas in galaxies”
  • Place of Presentation: Durham, United Kingdom
  • Year and Date: 2014-07-28 – 2014-08-01
• [Presentation] HETDEX: AGN-galaxy clustering at 2<z<3.5 (2014)
  • Author(s): Andreas Schulze
  • Organizer: Workshop "Clustering Measurements of Active Galactic Nuclei"
  • Place of Presentation: European Southern Observatory, Garching, Germany
  • Year and Date: 2014-07-14 – 2014-07-18
• [Presentation] The cosmic growth of the active black hole population (2014)
  • Author(s): Andreas Schulze
  • Organizer: Seminar
  • Place of Presentation: ETH Zuerich, Zuerich, Swiss
  • Year and Date: 2014-07-11 – 2014-07-11
• [Presentation] The cosmic growth of the active black hole population (2014)
  • Author(s): Andreas Schulze
  • Organizer: Kavli IPMU Focus week Workshop on Hyper-accretion
  • Place of Presentation: Kavli IPMU, Kashiwa, Japan
  • Year and Date: 2014-04-07 – 2014-04-11