X-shooter Spectroscopy and HST Imaging of 15 Massive Quiescent Galaxies at z ≳ 2

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X-shooter Spectroscopy and HST Imaging of 15 Massive Quiescent Galaxies at z ≳ 2. / Stockmann, Mikkel; Toft, Sune; Gallazzi, Anna; Zibetti, Stefano; Conselice, Christopher J.; Margalef-Bentabol, Berta; Zabl, Johannes; Jørgensen, Inger; Magdis, Georgios E.; Gómez-Guijarro, Carlos; Valentino, Francesco M.; Brammer, Gabriel B.; Ceverino, Daniel; Cortzen, Isabella; Davidzon, Iary; Demarco, Richardo; Faisst, Andreas; Hirschmann, Michaela; Krogager, Jens-Kristian; Lagos, Claudia D.; Man, Allison W. S.; Mundy, Carl J.; Peng, Yingjie; Selsing, Jonatan; Steinhardt, Charles L.; Whitaker, Kathrine E.

In: Astrophysical Journal, Vol. 888, No. 1, 4, 01.01.2020.

Research output: Contribution to journal › Journal article › Research › peer-review

Harvard

Stockmann, M, Toft, S, Gallazzi, A, Zibetti, S, Conselice, CJ, Margalef-Bentabol, B, Zabl, J, Jørgensen, I, Magdis, GE, Gómez-Guijarro, C, Valentino, FM, Brammer, GB, Ceverino, D, Cortzen, I, Davidzon, I, Demarco, R, Faisst, A, Hirschmann, M, Krogager, J-K, Lagos, CD, Man, AWS, Mundy, CJ, Peng, Y, Selsing, J, Steinhardt, CL & Whitaker, KE 2020, 'X-shooter Spectroscopy and HST Imaging of 15 Massive Quiescent Galaxies at z ≳ 2', Astrophysical Journal, vol. 888, no. 1, 4. https://doi.org/10.3847/1538-4357/ab5af4

APA

Stockmann, M., Toft, S., Gallazzi, A., Zibetti, S., Conselice, C. J., Margalef-Bentabol, B., Zabl, J., Jørgensen, I., Magdis, G. E., Gómez-Guijarro, C., Valentino, F. M., Brammer, G. B., Ceverino, D., Cortzen, I., Davidzon, I., Demarco, R., Faisst, A., Hirschmann, M., Krogager, J-K., ... Whitaker, K. E. (2020). X-shooter Spectroscopy and HST Imaging of 15 Massive Quiescent Galaxies at z ≳ 2. Astrophysical Journal, 888(1), [4]. https://doi.org/10.3847/1538-4357/ab5af4

Vancouver

Stockmann M, Toft S, Gallazzi A, Zibetti S, Conselice CJ, Margalef-Bentabol B et al. X-shooter Spectroscopy and HST Imaging of 15 Massive Quiescent Galaxies at z ≳ 2. Astrophysical Journal. 2020 Jan 1;888(1). 4. https://doi.org/10.3847/1538-4357/ab5af4

Author

Stockmann, Mikkel ; Toft, Sune ; Gallazzi, Anna ; Zibetti, Stefano ; Conselice, Christopher J. ; Margalef-Bentabol, Berta ; Zabl, Johannes ; Jørgensen, Inger ; Magdis, Georgios E. ; Gómez-Guijarro, Carlos ; Valentino, Francesco M. ; Brammer, Gabriel B. ; Ceverino, Daniel ; Cortzen, Isabella ; Davidzon, Iary ; Demarco, Richardo ; Faisst, Andreas ; Hirschmann, Michaela ; Krogager, Jens-Kristian ; Lagos, Claudia D. ; Man, Allison W. S. ; Mundy, Carl J. ; Peng, Yingjie ; Selsing, Jonatan ; Steinhardt, Charles L. ; Whitaker, Kathrine E. / X-shooter Spectroscopy and HST Imaging of 15 Massive Quiescent Galaxies at z ≳ 2. In: Astrophysical Journal. 2020 ; Vol. 888, No. 1.

Bibtex

@article{e3868c0b9ebd4254a3d77fdd64995e40,
title = "X-shooter Spectroscopy and HST Imaging of 15 Massive Quiescent Galaxies at z ≳ 2",
abstract = "We present a detailed analysis of a large sample of spectroscopically confirmed massive quiescent galaxies (MQGs; log(M */M ⊙) ∼ 11.5) at z ≳ 2. This sample comprises 15 galaxies selected in the COSMOS and UDS fields by their bright K-band magnitudes and followed up with Very Large Telescope (VLT) X-shooter spectroscopy and Hubble Space Telescope (HST)/WFC3 H F160W imaging. These observations allow us to unambiguously confirm their redshifts, ascertain their quiescent nature and stellar ages, and reliably assess their internal kinematics and effective radii. We find that these galaxies are compact, consistent with the high-mass end of the stellar mass–size relation for quiescent galaxies at z = 2. Moreover, the distribution of the measured stellar velocity dispersions of the sample is consistent with the most massive local early-type galaxies from the MASSIVE Survey, showing that evolution in these galaxies is dominated by changes in size. The HST images reveal, as surprisingly high, that 40% of the sample has tidal features suggestive of mergers and companions in close proximity, including three galaxies experiencing ongoing major mergers. The absence of velocity dispersion evolution from z = 2 to 0, coupled with a doubling of the stellar mass, with a factor of 4 size increase and the observed disturbed stellar morphologies, supports dry minor mergers as the primary drivers of the evolution of the MQGs over the last 10 billion yr.",
keywords = "Infrared galaxies, Compact galaxies, Quenched galaxies, Near infrared astronomy, Infrared astronomy, Galaxy kinematics, Galaxy dynamics, Stellar masses, Stellar ages, Stellar radii, High resolution spectroscopy, Hubble Space Telescope",
author = "Mikkel Stockmann and Sune Toft and Anna Gallazzi and Stefano Zibetti and Conselice, {Christopher J.} and Berta Margalef-Bentabol and Johannes Zabl and Inger J{\o}rgensen and Magdis, {Georgios E.} and Carlos G{\'o}mez-Guijarro and Valentino, {Francesco M.} and Brammer, {Gabriel B.} and Daniel Ceverino and Isabella Cortzen and Iary Davidzon and Richardo Demarco and Andreas Faisst and Michaela Hirschmann and Jens-Kristian Krogager and Lagos, {Claudia D.} and Man, {Allison W. S.} and Mundy, {Carl J.} and Yingjie Peng and Jonatan Selsing and Steinhardt, {Charles L.} and Whitaker, {Kathrine E.}",
year = "2020",
month = jan,
day = "1",
doi = "10.3847/1538-4357/ab5af4",
language = "English",
volume = "888",
journal = "Astrophysical Journal",
issn = "0004-637X",
publisher = "Institute of Physics Publishing, Inc",
number = "1",

}

RIS

TY - JOUR

T1 - X-shooter Spectroscopy and HST Imaging of 15 Massive Quiescent Galaxies at z ≳ 2

AU - Stockmann, Mikkel

AU - Toft, Sune

AU - Gallazzi, Anna

AU - Zibetti, Stefano

AU - Conselice, Christopher J.

AU - Margalef-Bentabol, Berta

AU - Zabl, Johannes

AU - Jørgensen, Inger

AU - Magdis, Georgios E.

AU - Gómez-Guijarro, Carlos

AU - Valentino, Francesco M.

AU - Brammer, Gabriel B.

AU - Ceverino, Daniel

AU - Cortzen, Isabella

AU - Davidzon, Iary

AU - Demarco, Richardo

AU - Faisst, Andreas

AU - Hirschmann, Michaela

AU - Krogager, Jens-Kristian

AU - Lagos, Claudia D.

AU - Man, Allison W. S.

AU - Mundy, Carl J.

AU - Peng, Yingjie

AU - Selsing, Jonatan

AU - Steinhardt, Charles L.

AU - Whitaker, Kathrine E.

PY - 2020/1/1

Y1 - 2020/1/1

N2 - We present a detailed analysis of a large sample of spectroscopically confirmed massive quiescent galaxies (MQGs; log(M */M ⊙) ∼ 11.5) at z ≳ 2. This sample comprises 15 galaxies selected in the COSMOS and UDS fields by their bright K-band magnitudes and followed up with Very Large Telescope (VLT) X-shooter spectroscopy and Hubble Space Telescope (HST)/WFC3 H F160W imaging. These observations allow us to unambiguously confirm their redshifts, ascertain their quiescent nature and stellar ages, and reliably assess their internal kinematics and effective radii. We find that these galaxies are compact, consistent with the high-mass end of the stellar mass–size relation for quiescent galaxies at z = 2. Moreover, the distribution of the measured stellar velocity dispersions of the sample is consistent with the most massive local early-type galaxies from the MASSIVE Survey, showing that evolution in these galaxies is dominated by changes in size. The HST images reveal, as surprisingly high, that 40% of the sample has tidal features suggestive of mergers and companions in close proximity, including three galaxies experiencing ongoing major mergers. The absence of velocity dispersion evolution from z = 2 to 0, coupled with a doubling of the stellar mass, with a factor of 4 size increase and the observed disturbed stellar morphologies, supports dry minor mergers as the primary drivers of the evolution of the MQGs over the last 10 billion yr.

AB - We present a detailed analysis of a large sample of spectroscopically confirmed massive quiescent galaxies (MQGs; log(M */M ⊙) ∼ 11.5) at z ≳ 2. This sample comprises 15 galaxies selected in the COSMOS and UDS fields by their bright K-band magnitudes and followed up with Very Large Telescope (VLT) X-shooter spectroscopy and Hubble Space Telescope (HST)/WFC3 H F160W imaging. These observations allow us to unambiguously confirm their redshifts, ascertain their quiescent nature and stellar ages, and reliably assess their internal kinematics and effective radii. We find that these galaxies are compact, consistent with the high-mass end of the stellar mass–size relation for quiescent galaxies at z = 2. Moreover, the distribution of the measured stellar velocity dispersions of the sample is consistent with the most massive local early-type galaxies from the MASSIVE Survey, showing that evolution in these galaxies is dominated by changes in size. The HST images reveal, as surprisingly high, that 40% of the sample has tidal features suggestive of mergers and companions in close proximity, including three galaxies experiencing ongoing major mergers. The absence of velocity dispersion evolution from z = 2 to 0, coupled with a doubling of the stellar mass, with a factor of 4 size increase and the observed disturbed stellar morphologies, supports dry minor mergers as the primary drivers of the evolution of the MQGs over the last 10 billion yr.

KW - Infrared galaxies

KW - Compact galaxies

KW - Quenched galaxies

KW - Near infrared astronomy

KW - Infrared astronomy

KW - Galaxy kinematics

KW - Galaxy dynamics

KW - Stellar masses

KW - Stellar ages

KW - Stellar radii

KW - High resolution spectroscopy

KW - Hubble Space Telescope

U2 - 10.3847/1538-4357/ab5af4

DO - 10.3847/1538-4357/ab5af4

M3 - Journal article

VL - 888

JO - Astrophysical Journal

JF - Astrophysical Journal

SN - 0004-637X

IS - 1

M1 - 4

ER -

ID: 236164757