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    PHIBSS: Molecular Gas, Extinction, Star Formation, And Kinematics In The Z=1.5 Star-Forming Galaxy Egs13011166

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    Date
    2013-08
    Author
    Genzel, R.
    Tacconi, L. J.
    Kurk, Jaron
    Wuyts, S.
    Combes, Francoise
    Freundlich, J.
    Bolatto, A.
    Cooper, Michael C.
    Neri, R.
    Nordon, R.
    Bournaud, F.
    Burkert, A.
    Comerford, J.
    Cox, P.
    Davis, M.
    Schreiber, N. M. F.
    Garcia-Burillo, S.
    Gracia-Carpio, J.
    Lutz, D.
    Naab, T.
    Newman, S.
    Saintonge, A.
    Griffin, K. S.
    Shapley, A.
    Sternberg, Assaf
    Weiner, B.
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    Abstract
    We report matched resolution imaging spectroscopy of the CO 3-2 line (with the IRAM Plateau de Bure millimeter interferometer) and of the Ha line (with LUCI at the Large Binocular Telescope) in the massive z = 1.53 main-sequence galaxy EGS 13011166, as part of the "Plateau de Bure high-z, blue-sequence survey" (PHIBSS: Tacconi et al.). We combine these data with Hubble Space Telescope V-I-J-H-band maps to derive spatially resolved distributions of stellar surface density, star formation rate, molecular gas surface density, optical extinction, and gas kinematics. The spatial distribution and kinematics of the ionized and molecular gas are remarkably similar and are well modeled by a turbulent, globally Toomre unstable, rotating disk. The stellar surface density distribution is smoother than the clumpy rest-frame UV/ optical light distribution and peaks in an obscured, star-forming massive bulge near the dynamical center. The molecular gas surface density and the effective optical screen extinction track each other and are well modeled by a "mixed" extinction model. The inferred slope of the spatially resolved molecular gas to star formation rate relation, N = d(log)Sigma(star form)/dlog Sigma(mol) (gas), depends strongly on the adopted extinction model, and can vary from 0.8 to 1.7. For the preferred mixed dust-gas model, we find N = 1.14 +/- 0.1.
    Department
    Astronomy
    Subject
    galaxies: evolution
    galaxies: high-redshift
    galaxies: ism
    ism:
    molecules
    stars: formation
    ultra deep field
    similar-to 2
    extragalactic legacy survey
    formation
    rate indicators
    high-redshift
    nearby galaxies
    formation law
    massive
    galaxies
    depletion time
    sins survey
    astronomy & astrophysics
    URI
    http://hdl.handle.net/2152/34746
    xmlui.dri2xhtml.METS-1.0.item-citation
    Genzel, R., L. J. Tacconi, J. Kurk, S. Wuyts, F. Combes, J. Freundlich, A. Bolatto et al. "PHIBSS: Molecular gas, extinction, star formation, and kinematics in the z= 1.5 star-forming galaxy EGS13011166." The Astrophysical Journal, Vol. 773, No. 1 (Aug., 2013): 68.
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