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The Assembly History of Disk Galaxies. I. The Tully-Fisher Relation to z ≃ 1.3 from Deep Exposures with DEIMOS

Miller, Sarah H. and Bundy, Kevin and Sullivan, Mark and Ellis, Richard S. and Treu, Tommaso (2011) The Assembly History of Disk Galaxies. I. The Tully-Fisher Relation to z ≃ 1.3 from Deep Exposures with DEIMOS. Astrophysical Journal, 741 (2). Art. No. 115. ISSN 0004-637X.

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We present new measures of the evolving scaling relations between stellar mass, luminosity and rotational velocity for a morphologically inclusive sample of 129 disk-like galaxies with z_(AB) < 22.5 in the redshift range 0.2 <z < 1.3, based on spectra from DEep Imaging Multi-Object Spectrograph on the Keck II telescope, multi-color Hubble Space Telescope (HST) Advanced Camera for Surveys photometry, and ground-based K_s -band imaging. A unique feature of our survey is the extended spectroscopic integration times, leading to significant improvements in determining characteristic rotational velocities for each galaxy. Rotation curves are reliably traced to the radius where they begin to flatten for ~90% of our sample, and we model the HST-resolved bulge and disk components in order to accurately de-project our measured velocities, accounting for seeing and dispersion. We demonstrate the merit of these advances by recovering an intrinsic scatter on the stellar mass Tully-Fisher relation a factor of two to three less than in previous studies at intermediate redshift and comparable to that of locally determined relations. With our increased precision, we find that the relation is well established by langzrang ~ 1, with no significant evolution to (z) ~ 0.3, ΔM * ~ 0.04 ± 0.07 dex. A clearer trend of evolution is seen in the B-band Tully-Fisher relation corresponding to a decline in luminosity of ΔM_B ~ 0.85 ± 0.28 magnitudes at fixed velocity over the same redshift range, reflecting the changes in star formation over this period. As an illustration of the opportunities possible when gas masses are available for a sample such as ours, we show how our dynamical and stellar mass data can be used to evaluate the likely contributions of baryons and dark matter to the assembly history of spiral galaxies.

Item Type:Article
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URLURL TypeDescription
Bundy, Kevin0000-0001-9742-3138
Sullivan, Mark0000-0001-9053-4820
Ellis, Richard S.0000-0001-7782-7071
Treu, Tommaso0000-0002-8460-0390
Additional Information:© 2011 The American Astronomical Society. Received 2011 February 18; accepted 2011 August 15; published 2011 October 25. S.H.M. thanks the Rhodes Trust, the Oxford Astrophysics Department, New College, Oxford, and the California Institute of Technology for supporting her work. M.S. and R.S.E. acknowledge financial support from the Royal Society. We thank S. Moran, N. Miller, G. Mikelsons, and K. Chiu for considerable initial assistance with the organization of this data set. We thank C. Peng for supplying us with galfit 3.0 and acknowledge useful discussions with A. Benson, A. Brooks, A. Bunker, M. Bureau, M. Cappellari, R. Davies, H. Flores, F. Hammer, S. Kassin, L. Miller, and M. Puech. The referee, B. Weiner, is acknowledged for his constructive comments in the improvement of this paper. The spectroscopic data was secured with the W. M. Keck Observatory on Mauna Kea. We thank the observatory staff for their dedication and support. The authors recognize and acknowledge the cultural role and reverence that the summit of Mauna Kea has always had with the indigenous Hawaiian community. We are most fortunate to have the opportunity to conduct observations from this mountain.
Funding AgencyGrant Number
Oxford Astrophysics DepartmentUNSPECIFIED
Subject Keywords: galaxies: evolution; galaxies: fundamental parameters; galaxies: kinematics and dynamics; galaxies: spiral
Issue or Number:2
Record Number:CaltechAUTHORS:20120127-070332795
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Official Citation: The Assembly History of Disk Galaxies. I. The Tully-Fisher Relation to z 1.3 from Deep Exposures with DEIMOS Sarah H. Miller et al. 2011 ApJ 741 115
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:28988
Deposited By: Ruth Sustaita
Deposited On:30 Jan 2012 16:14
Last Modified:22 Nov 2019 21:38

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