2017 Fiscal Year Annual Research Report
Dust-free Insight into the Obscured Cosmic Accretion History and Modes of Galaxy Assembly
| Project/Area Number |
15K17604
|
|---|
| Research Institution | The University of Tokyo |
|---|
Principal Investigator |
RUJOPAKARN WIPHU 東京大学, カブリ数物連携宇宙研究機構, 客員科学研究員 (60731776)
|
|---|
| Project Period (FY) |
2015-04-01 – 2018-03-31
|
| Keywords | Galaxy Evolution / Galactic Bulge Formation / Star Formation / SMBH Growth |
|---|
| Outline of Annual Research Achievements |
The data analysis of the proposed research program was completed and, by the end of FY2017, have played key roles in the publication and/or submission of eight journal papers. We have successfully answer the key questions posed in the program’s proposal.Firstly, we have determined the typical morphology of star formation (SF) in rapidly assembling galaxies at redshift z ~ 2 to be disk-wide, consistent with the scenario that galaxies assemble most of their stellar mass via accretion of cold gas, which leads to gas-rich, unstable disks and in-situ disk-wide star formation.Secondly, we have developed a new technique to localized the sites of intense SF and active galactic nuclei (AGN) at redshift z ~ 2 with ~100 parsec precision. This has previously been possible due to the extremely thick dust extinction typical near the center of rapidly star-forming galaxies at this epoch. Early results on three galaxies show the AGN and SF to be cospatial. This is consistent with a picture of in-situ galactic bulge and supermassive black hole (SMBH) growth, and may represent the dominant process regulating the bulge-SMBH relationship through which all massive galaxies may pass.The source catalog from our Jansky Very Large Array radio survey, supported by the program, has been widely distributed among collaborators and have been published, in part, in the aforementioned journal papers. Most notably, the catalog was also used by the James Webb Space Telescope (JWST) NIRCam and NIRSpec Guaranteed Time Observations (GTO) teams, which the PI is a member, to target the GTO observations.
|
-
-
[Journal Article] ALMA 26 arcmin2 Survey of GOODS-S at One-millimeter (ASAGAO): X-Ray AGN Properties of Millimeter-selected Galaxies2018
Author(s)
Ueda, Y.; Hatsukade, B.; Kohno, K.; Yamaguchi, Y.; Tamura, Y.; Umehata, H.; Akiyama, M.; Ao, Y. ; Rujopakarn, W. et.al
-
Journal Title
The Astrophysical Journal
Volume: 853, Issue 1, article id. 24
Pages: 1-11
DOI
Peer Reviewed / Int'l Joint Research
-
-
-
-
-
-
-
-
