Browsing Research publications by Author "Matsuda, Y."

Now showing items 1-11 of 11

    • ALMA Deep Field in SSA22: A Concentration of Dusty Starbursts in a z = 3.09 Protocluster Core 

      Umehata, H.; Tamura, Y.; Kohno, K.; Ivison, R.~J.; Alexander, D.~M.; Geach, J.~E.; Hatsukade, B.; Hughes, D.~H.; Ikarashi, S.; Kato, Y.; Izumi, T.; Kawabe, R.; Kubo, M.; Lee, M.; Lehmer, B.; Makiya, R.; Matsuda, Y.; Nakanishi, K.; Saito, T.; Smail, I.; Yamada, T.; Yamaguchi, Y.; Yun, M. (2015-12-04)
      We report the results of 1farcm5 × 3' mapping at 1.1 mm with the Atacama Large Millimeter/submillimeter Array toward the central region of the z = 3.09 SSA22 protocluster. By combining our source catalog with archival ...

    • ALMA observations of a z ≈ 3.1 protocluster : Star formation from active galactic nuclei and Lyman-alpha blobs in an overdense environment 

      Alexander, D. M.; Simpson, J. M.; Harrison, C. M.; Mullaney, J. R.; Smail, I.; Geach, J. E.; Hickox, R. C.; Karim, A.; Kubo, M.; Lehmer, B. D.; Matsuda, Y.; Rosario, D. J.; Stanley, F.; Swinbank, A. M.; Umehata, H.; Yamada, T.; Hine, Nancy (2016-09-21)
      We exploit Atacama Large Interferometer Array (ALMA) 870 μm observations to measure the star formation rates (SFRs) of eight X-ray detected active galactic nuclei (AGNs) in a z ≈ 3.1 protocluster, four of which reside in ...

    • ALMA Observations of Ly-alpha Blob 1: Halo Substructure Illuminated from Within 

      Geach, J.~E.; Narayanan, D.; Matsuda, Y.; Hayes, M.; Mas-Ribas, L.; Dijkstra, M.; Steidel, C.~C.; Chapman, S.~C.; Feldmann, R.; Avison, A.; Agertz, O.; Ao, Y.; Birkinshaw, M.; Bremer, M.~N.; Clements, D.~L.; Dannerbauer, H.; Farrah, D.; Harrison, C.~M.; Kubo, M.; Michalowski, M.~J.; Scott, D.; Spaans, M.; Simpson, J.~M.; Swinbank, A.~M.; Taniguchi, Y.; van der Werf, P.; Verma, A.; Yamada, T. (2016-11-14)
      We present new Atacama Large Millimeter/Submillimeter Array (ALMA) 850 μm continuum observations of the original Lyα Blob (LAB) in the SSA22 field at z = 3.1 (SSA22-LAB01). The ALMA map resolves the previously identified ...

    • An ALMA survey of the brightest sub-millimetre sources in the SCUBA-2 COSMOS field 

      Simpson, James; Smail, Ian; Dudzeviciute, U.; Matsuda, Y.; Hsieh, B. -C.; Swinbank, A. M.; Stach, S. M.; An, Fang Xia; Birkin, J. E.; Ao, Y.; Bunker, A. J.; Chapman, S. C.; Chen, Chian-Chou; Coppin, K. E. K.; Ikarashi, S.; Ivison, R. J.; Mitsuhashi, I.; Saito, T.; Umehata, H.; Wang, R.; Zhao, Y. (2020-07-01)
      We present an ALMA study of the ~180 brightest sources in the SCUBA-2 map of the COSMOS field from the S2COSMOS survey, as a pilot study for AS2COSMOS - a full survey of the ~1,000 sources in this field. In this pilot we ...

    • The average submillimetre properties of Lyman-alpha Blobs at z=3 

      Hine, N. K.; Geach, J. E.; Matsuda, Y.; Lehmer, B. D.; Michalowski, M. J.; Farrah, D.; Spaans, M.; Oliver, S. J.; Smith, D. J. B.; Chapman, S. C.; Jenness, T.; Alexander, D. M.; Robson, I.; Werf, P. van der (2016-08-21)
      Ly-alpha blobs (LABs) offer insight into the complex interface between galaxies and their circumgalactic medium. Whilst some LABs have been found to contain luminous star-forming galaxies and active galactic nuclei that ...

    • Concurrent supermassive black hole and galaxy growth : linking environment and nuclear activity in z=2.23 alpha emitters 

      Lehmer, B.D.; Lucy, A. B.; Alexander, D.M.; Best, P.N.; Geach, J. E.; Harrison, C. M.; Hornschemeier, A. E.; Matsuda, Y.; Mullaney, J. R.; Smail, Ian; Sobral, D.; Swinbank, A.M. (2013-03-10)
      We present results from a approximate to 100 ks Chandra observation of the 2QZ Cluster 1004+00 structure at z = 2.23 (hereafter 2QZ Clus). 2QZ Clus was originally identified as an overdensity of four optically-selected ...

    • An enhanced merger fraction within the galaxy population of the SSA22 protocluster at z = 3.1 

      Hine, N.~K.; Geach, J.~E.; Alexander, D.~M.; Lehmer, B.~D.; Chapman, S.~C.; Matsuda, Y. (2016-01-21)
      The overdense environments of protoclusters of galaxies in the early Universe (z > 2) are expected to accelerate the evolution of galaxies, with an increased rate of stellar mass assembly and black hole accretion compared ...

    • An extragalactic spectroscopic survey of the SSA22 field 

      Saez, C.; Lehmer, B. D.; Bauer, F. E.; Stern, D.; Gonzales, A.; Rreza, I.; Alexander, D. M.; Matsuda, Y.; Geach, J. E.; Harrison, F. A.; Hayashino, T. (2015-07-01)
      We present Very Large Telescope VIMOS, Keck DEIMOS and Keck LRIS multi-object spectra of 367 sources in the field of the z ≈ 3.09 protocluster SSA22. Sources are spectroscopically classified via template matching, allowing ...

    • Herschel protocluster survey : A search for dusty star-forming galaxies in protoclusters at z = 2-3 

      Kato, Y.; Matsuda, Y.; Smail, Ian; Swinbank, A. M.; Hatsukade, B.; Umehata, H.; Tanaka, I.; Saito, T.; Iono, D.; Tamura, Y.; Kohno, K.; Erb, D. K.; Lehmer, B. D.; Geach, J. E.; Steidel, C. C.; Alexander, D. M.; Yamada, T.; Hayashino, T. (2016-08-21)
      We present a Herschel/Spectral and Photometric Imaging Receiver (SPIRE) survey of three protoclusters at z = 2-3 (2QZCluster, HS1700, SSA22). Based on the SPIRE colours (S350/S250 and S500/S350) of 250 μm sources, we ...

    • Multi-wavelength properties of radio and machine-learning identified counterparts to submillimeter sources in S2COSMOS 

      An, FangXia; Simpson, J. M.; Smail, Ian; Swinbank, A. M.; Ma, Cong; Liu, Daizhong; Lang, P.; Schinnerer, E.; Karim, A.; Magnelli, B.; Leslie, S.; Bertoldi, F.; Chen, Chian-Chou; Geach, J. E.; Matsuda, Y.; Stach, S. M.; Wardlow, J. L.; Gullberg, B.; Ivison, R. J.; Ao, Y.; Coogan, R. T.; Thomson, A. P.; Chapman, S. C.; Wang, R.; Wang, Wei-Hao; Yang, Y.; Asquith, R.; Bourne, N.; Coppin, K.; Hine, N. K.; Ho, L. C.; Hwang, H. S.; Kato, Y.; Lacaille, K.; Lewis, A. J. R.; Oteo, I.; Scholtz, J.; Sawicki, M.; Smith, D. (2019-11-20)
      We identify multi-wavelength counterparts to 1,147 submillimeter sources from the S2COSMOS SCUBA-2 survey of the COSMOS field by employing a recently developed radio$+$machine-learning method trained on a large sample of ...

    • A resolved map of the infrared excess in a Lyman Break Galaxy at z=3 

      Koprowski, M. P.; Coppin, K. E. K.; Geach, J. E.; Hine, N. K.; Bremer, M.; Chapman, S. C.; Davies, L. J. M.; Hayashino, T.; Knudsen, K. K.; Kubo, M.; Lehmer, B. D.; Matsuda, Y.; Smith, D. J. B.; Werf, P. P. van der; Violino, G.; Yamada, T. (2016-09-10)
      We have observed the dust continuum of ten z=3.1 Lyman Break Galaxies with the Atacama Large Millimeter/Submillimeter Array at ~450 mas resolution in Band 7. We detect and resolve the 870um emission in one of the targets ...