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ZFIRE : the evolution of the stellar mass Tully-Fisher relation to redshift ∼ 2.2

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Abstract
Using observations made with MOSFIRE on Keck I as part of the ZFIRE survey, we present the stellar mass Tully-Fisher relation at 2.0 < z < 2.5. The sample was drawn from a stellar-mass-limited, K-s-band-selected catalog from ZFOURGE over the CANDELS area in the COSMOS field. We model the shear of the Ha emission line to derive rotational velocities at 2.2 x the scale radius of an exponential disk (V-2.2). We correct for the blurring effect of a 2D point-spread function (PSF) and the fact that the MOSFIRE PSF is better approximated by a Moffat than a Gaussian, which is more typically assumed for natural seeing. We find for the Tully-Fisher relation at 2.0 < z < 2.5 that log V-2.2=(2.18 +/- 0.051)+(0.193 +/- 0.108)(logM/M-circle dot - 10) and infer an evolution of the zero- point of Delta M/M-circle dot = - 0.25 +/- 0.16 dex or Delta M/M-circle dot = -0.39 +/- 0.21 dex compared to z = 0 when adopting a fixed slope of 0.29 or 1/4.5, respectively. We also derive the alternative kinematic estimator S-0.5, with a best-fit relation log S-0.5=(2.06 +/- 0.032) + (0.211 +/- 0.086) (logM/M-circle dot - 10), and infer an evolution of Delta M/M-circle dot = -0.45 +/- 0.13 dex compared to z < 1.2 if we adopt a fixed slope. We investigate and review various systematics, such as PSF effects, projection effects, systematics related to stellar mass derivation, selection biases, and slope. We find that discrepancies between the various literature values are reduced when taking these into account. Our observations correspond well with the gradual evolution predicted by semianalytic models.
Keywords
STAR-FORMING GALAXIES, SIMILAR-TO 2, TKRS/GOODS-N FIELD, LESS-THAN 4, DISK GALAXIES, MORPHOLOGICAL EVOLUTION, SPECTROSCOPIC SURVEY, QUIESCENT, GALAXIES, ROTATION, ZFOURGE, galaxies: evolution, galaxies: high-redshift, galaxies: kinematics and dynamics

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MLA
Straatman, Caroline, Karl Glazebrook, Glenn G Kacprzak, et al. “ZFIRE : the Evolution of the Stellar Mass Tully-Fisher Relation to Redshift ∼ 2.2.” ASTROPHYSICAL JOURNAL 839.1 (2017): n. pag. Print.
APA
Straatman, C., Glazebrook, K., Kacprzak, G. G., Labbe, I., Nanayakkara, T., Alcorn, L., Cowley, M., et al. (2017). ZFIRE : the evolution of the stellar mass Tully-Fisher relation to redshift ∼ 2.2. ASTROPHYSICAL JOURNAL, 839(1).
Chicago author-date
Straatman, Caroline, Karl Glazebrook, Glenn G Kacprzak, Ivo Labbe, Themiya Nanayakkara, Leo Alcorn, Michael Cowley, et al. 2017. “ZFIRE : the Evolution of the Stellar Mass Tully-Fisher Relation to Redshift ∼ 2.2.” Astrophysical Journal 839 (1).
Chicago author-date (all authors)
Straatman, Caroline, Karl Glazebrook, Glenn G Kacprzak, Ivo Labbe, Themiya Nanayakkara, Leo Alcorn, Michael Cowley, Lisa J Kewley, Lee R Spitler, Kim-Vy H Tran, and Tiantian Yuan. 2017. “ZFIRE : the Evolution of the Stellar Mass Tully-Fisher Relation to Redshift ∼ 2.2.” Astrophysical Journal 839 (1).
Vancouver
1.
Straatman C, Glazebrook K, Kacprzak GG, Labbe I, Nanayakkara T, Alcorn L, et al. ZFIRE : the evolution of the stellar mass Tully-Fisher relation to redshift ∼ 2.2. ASTROPHYSICAL JOURNAL. 2017;839(1).
IEEE
[1]
C. Straatman et al., “ZFIRE : the evolution of the stellar mass Tully-Fisher relation to redshift ∼ 2.2,” ASTROPHYSICAL JOURNAL, vol. 839, no. 1, 2017.
@article{8582601,
  abstract     = {Using observations made with MOSFIRE on Keck I as part of the ZFIRE survey, we present the stellar mass Tully-Fisher relation at 2.0 < z < 2.5. The sample was drawn from a stellar-mass-limited, K-s-band-selected catalog from ZFOURGE over the CANDELS area in the COSMOS field. We model the shear of the Ha emission line to derive rotational velocities at 2.2 x the scale radius of an exponential disk (V-2.2). We correct for the blurring effect of a 2D point-spread function (PSF) and the fact that the MOSFIRE PSF is better approximated by a Moffat than a Gaussian, which is more typically assumed for natural seeing. We find for the Tully-Fisher relation at 2.0 < z < 2.5 that log V-2.2=(2.18 +/- 0.051)+(0.193 +/- 0.108)(logM/M-circle dot - 10) and infer an evolution of the zero- point of Delta M/M-circle dot = - 0.25 +/- 0.16 dex or Delta M/M-circle dot = -0.39 +/- 0.21 dex compared to z = 0 when adopting a fixed slope of 0.29 or 1/4.5, respectively. We also derive the alternative kinematic estimator S-0.5, with a best-fit relation log S-0.5=(2.06 +/- 0.032) + (0.211 +/- 0.086) (logM/M-circle dot - 10), and infer an evolution of Delta M/M-circle dot = -0.45 +/- 0.13 dex compared to z < 1.2 if we adopt a fixed slope. We investigate and review various systematics, such as PSF effects, projection effects, systematics related to stellar mass derivation, selection biases, and slope. We find that discrepancies between the various literature values are reduced when taking these into account. Our observations correspond well with the gradual evolution predicted by semianalytic models.},
  articleno    = {57},
  author       = {Straatman, Caroline and Glazebrook, Karl and Kacprzak, Glenn G and Labbe, Ivo and Nanayakkara, Themiya and Alcorn, Leo and Cowley, Michael and Kewley, Lisa J and Spitler, Lee R and Tran, Kim-Vy H and Yuan, Tiantian},
  issn         = {0004-637X},
  journal      = {ASTROPHYSICAL JOURNAL},
  keywords     = {STAR-FORMING GALAXIES,SIMILAR-TO 2,TKRS/GOODS-N FIELD,LESS-THAN 4,DISK GALAXIES,MORPHOLOGICAL EVOLUTION,SPECTROSCOPIC SURVEY,QUIESCENT,GALAXIES,ROTATION,ZFOURGE,galaxies: evolution,galaxies: high-redshift,galaxies: kinematics and dynamics},
  language     = {eng},
  number       = {1},
  pages        = {20},
  title        = {ZFIRE : the evolution of the stellar mass Tully-Fisher relation to redshift ∼ 2.2},
  url          = {http://dx.doi.org/10.3847/1538-4357/aa643e},
  volume       = {839},
  year         = {2017},
}

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