Please use this identifier to cite or link to this item: http://hdl.handle.net/1959.3/68156

Title

The stellar mass Tully-Fisher relation to z = 1.2 from AEGIS

Author(s)

Kassin, Susan A.;  Weiner, Benjamin J.;  Faber, S. M.;  Koo, David C.;  Lotz, Jennifer M.;  Diemand, Jorg;  Harker, Justin J.;  Bundy, Kevin;  Metevier, A. J.;  Phillips, Andrew C.;  Cooper, Michael C.;  Croton, Darren J.;  Konidaris, Nicholas;  Noeske, Kai G.;  Willmer, Christopher N.

Abstract

We combine newly measured rotation velocities, velocity dispersions, and stellar masses to construct stellar mass Tully-Fisher relations (M*TFRs) for 544 galaxies with strong emission lines at 0.1 < z < 1.2 from the All-Wavelength Extended Groth Strip International Survey (AEGIS) and the Deep Extragalactic Evolutionary Probe 2 (DEEP2) survey. The conventional M*TFR using only rotation velocity (Vrot) shows large scatter (∼ 1.5 dex in velocity). The scatter and residuals are correlated with morphology in the sense that disturbed, compact, and major merger galaxies have lower velocities for their masses. We construct an M*TFR using the kinematic estimator S0.5, which is defined as img1.gif1/2 and accounts for disordered or noncircular motions through the gas velocity dispersion (σg). The new M*TFR, termed S0.5/M*TFR, is remarkably tight over 0.1 < z < 1.2, with no detectable evolution of its intercept or slope with redshift. The average best-fit relation has 0.47 dex scatter in stellar mass, corresponding to ∼1.2 "magnitudes," assuming a constant mass-to-light ratio. Interestingly, the S0.5/M*TFR is consistent with the absorption-line-based stellar mass Faber-Jackson relation for nearby elliptical galaxies in terms of slope and intercept, which might suggest a physical connection between the two relations.

Publication type

Journal article

Source

Astrophysical Journal Letters, Vol. 660, no. 1 (May 2007), pp. L35-L38

Publication year

2007

FOR Code(s)

0201 Astronomical and Space Sciences

Keyword(s)

Galaxy evolution;  High-redshift galaxies;  Kinematics galaxies;  Spiral galaxies;  Stellar content

Publisher

University of Chicago Press

ISSN

0004-637X

Publisher URL

http://dx.doi.org/10.1086/517932

Copyright

Copyright © 2007 The American Astronomical Society. All rights reserved. The American Astronomical Society does not allow institutions to archive either the accepted manuscript or the published version of the article. However, you can find an earlier version of the full text here: http://arxiv.org/abs/astro-ph/0702643.

Peer reviewed