Evolution in the orbital structure of quiescent galaxies from MAGPI, LEGA-C, and SAMI surveys : direct evidence for merger-driven growth over the last 7 Gyr

D'Eugenio, Francesco; van der Wel, Arjen; Piotrowska, Joanna M; Bezanson, Rachel; Taylor, Edward N; van de Sande, Jesse; Baker, William M; Bell, Eric F; Bellstedt, Sabine; Bland-Hawthorn, Joss; Bluck, Asa F L; Brough, Sarah; Bryant, Julia J; Colless, Matthew; Cortese, Luca; Croom, Scott M; Derkenne, Caro; van Dokkum, Pieter; Fisher, Deanne; Foster, Caroline; Gallazzi, Anna; de Graaff, Anna; Groves, Brent; van Houdt, Josha; del P. Lagos, Claudia; Looser, Tobias J; Maiolino, Roberto; Maseda, Michael; Mendel, J Trevor; Nersesian, Angelos; Pacifici, Camilla; Poci, Adriano; Remus, Rhea-Silvia; Sweet, Sarah M; Thater, Sabine; Tran, Kim-Vy; Übler, Hannah; Valenzuela, Lucas M; Wisnioski, Emily; Zibetti, Stefano

Evolution in the orbital structure of quiescent galaxies from MAGPI, LEGA-C, and SAMI surveys : direct evidence for merger-driven growth over the last 7 Gyr

Francesco D'Eugenio (UGent) , Arjen van der Wel (UGent) , Joanna M Piotrowska, Rachel Bezanson, Edward N Taylor, Jesse van de Sande, William M Baker, Eric F Bell, Sabine Bellstedt, Joss Bland-Hawthorn, et al.

(2023) MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY. 525(2). p.2789-2805

Author

Francesco D'Eugenio (UGent) , Arjen van der Wel (UGent) , Joanna M Piotrowska, Rachel Bezanson, Edward N Taylor, Jesse van de Sande, William M Baker, Eric F Bell, Sabine Bellstedt, Joss Bland-Hawthorn, Asa F L Bluck, Sarah Brough, Julia J Bryant, Matthew Colless, Luca Cortese, Scott M Croom, Caro Derkenne, Pieter van Dokkum, Deanne Fisher, Caroline Foster, Anna Gallazzi, Anna de Graaff, Brent Groves, Josha van Houdt, Claudia del P. Lagos, Tobias J Looser, Roberto Maiolino, Michael Maseda, J Trevor Mendel, Angelos Nersesian (UGent) , Camilla Pacifici, Adriano Poci, Rhea-Silvia Remus, Sarah M Sweet, Sabine Thater, Kim-Vy Tran, Hannah Übler, Lucas M Valenzuela, Emily Wisnioski and Stefano Zibetti

Organization

Department of Physics and astronomy

Project

LEGA-C (The Physics of Galaxies 7 Gyr Ago)

Abstract

We present the first study of spatially integrated higher-order stellar kinematics over cosmic time. We use deep rest-frame optical spectroscopy of quiescent galaxies at redshifts z = 0.05, 0.3, and 0.8 from the SAMI, MAGPI, and LEGA-C surveys to measure the excess kurtosis h(4) of the stellar velocity distribution, the latter parametrized as a Gauss-Hermite series. Conservatively using a redshift-independent cut in stellar mass ( M (*) = 10(11) M (circle dot)) and matching the stellar-mass distributions of our samples, we find 7 sigma evidence of h(4) increasing with cosmic time, from a median value of 0.019 +/- 0.002 at z = 0.8 to 0.059 +/- 0.004 at z = 0.06. Alternatively, we use a physically motivated sample selection based on the mass distribution of the progenitors of local quiescent galaxies as inferred from numerical simulations; in this case, we find 10 sigma evidence. This evolution suggests that, over the last 7 Gyr, there has been a gradual decrease in the rotation-to-dispersion ratio and an increase in the radial anisotropy of the stellar velocity distribution, qualitatively consistent with accretion of gas-poor satellites. These findings demonstrate that massive galaxies continue to accrete mass and increase their dispersion support after becoming quiescent.

Keywords

galaxies: elliptical and lenticular, cD, galaxies: evolution, galaxies: formation, galaxies: fundamental parameters, galaxies: structure, TO-LIGHT RATIO, VELOCITY-DISPERSION EVOLUTION, STELLAR POPULATION SYNTHESIS, POST-STARBURST GALAXIES, HIGH-REDSHIFT GALAXIES, DIGITAL SKY SURVEY, DATA RELEASE 2, STAR-FORMATION, ATLAS(3D) PROJECT, ILLUSTRISTNG SIMULATIONS

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Citation

Please use this url to cite or link to this publication: http://hdl.handle.net/1854/LU-01KG2JCX5G2S9WZ1XC2ANHC1Y6

MLA: D’Eugenio, Francesco, et al. “Evolution in the Orbital Structure of Quiescent Galaxies from MAGPI, LEGA-C, and SAMI Surveys : Direct Evidence for Merger-Driven Growth over the Last 7 Gyr.” MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY, vol. 525, no. 2, 2023, pp. 2789–805, doi:10.1093/mnras/stad800.
APA: D’Eugenio, F., van der Wel, A., Piotrowska, J. M., Bezanson, R., Taylor, E. N., van de Sande, J., … Zibetti, S. (2023). Evolution in the orbital structure of quiescent galaxies from MAGPI, LEGA-C, and SAMI surveys : direct evidence for merger-driven growth over the last 7 Gyr. MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY, 525(2), 2789–2805. https://doi.org/10.1093/mnras/stad800
Chicago author-date: D’Eugenio, Francesco, Arjen van der Wel, Joanna M Piotrowska, Rachel Bezanson, Edward N Taylor, Jesse van de Sande, William M Baker, et al. 2023. “Evolution in the Orbital Structure of Quiescent Galaxies from MAGPI, LEGA-C, and SAMI Surveys : Direct Evidence for Merger-Driven Growth over the Last 7 Gyr.” MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY 525 (2): 2789–2805. https://doi.org/10.1093/mnras/stad800.
Chicago author-date (all authors): D’Eugenio, Francesco, Arjen van der Wel, Joanna M Piotrowska, Rachel Bezanson, Edward N Taylor, Jesse van de Sande, William M Baker, Eric F Bell, Sabine Bellstedt, Joss Bland-Hawthorn, Asa F L Bluck, Sarah Brough, Julia J Bryant, Matthew Colless, Luca Cortese, Scott M Croom, Caro Derkenne, Pieter van Dokkum, Deanne Fisher, Caroline Foster, Anna Gallazzi, Anna de Graaff, Brent Groves, Josha van Houdt, Claudia del P. Lagos, Tobias J Looser, Roberto Maiolino, Michael Maseda, J Trevor Mendel, Angelos Nersesian, Camilla Pacifici, Adriano Poci, Rhea-Silvia Remus, Sarah M Sweet, Sabine Thater, Kim-Vy Tran, Hannah Übler, Lucas M Valenzuela, Emily Wisnioski, and Stefano Zibetti. 2023. “Evolution in the Orbital Structure of Quiescent Galaxies from MAGPI, LEGA-C, and SAMI Surveys : Direct Evidence for Merger-Driven Growth over the Last 7 Gyr.” MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY 525 (2): 2789–2805. doi:10.1093/mnras/stad800.
Vancouver: 1.
D’Eugenio F, van der Wel A, Piotrowska JM, Bezanson R, Taylor EN, van de Sande J, et al. Evolution in the orbital structure of quiescent galaxies from MAGPI, LEGA-C, and SAMI surveys : direct evidence for merger-driven growth over the last 7 Gyr. MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY. 2023;525(2):2789–805.
IEEE: [1]
F. D’Eugenio et al., “Evolution in the orbital structure of quiescent galaxies from MAGPI, LEGA-C, and SAMI surveys : direct evidence for merger-driven growth over the last 7 Gyr,” MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY, vol. 525, no. 2, pp. 2789–2805, 2023.

@article{01KG2JCX5G2S9WZ1XC2ANHC1Y6,
  abstract     = {{We present the first study of spatially integrated higher-order stellar kinematics over cosmic time. We use deep rest-frame optical spectroscopy of quiescent galaxies at redshifts z = 0.05, 0.3, and 0.8 from the SAMI, MAGPI, and LEGA-C surveys to measure the excess kurtosis h(4) of the stellar velocity distribution, the latter parametrized as a Gauss-Hermite series. Conservatively using a redshift-independent cut in stellar mass ( M (*) = 10(11) M (circle dot)) and matching the stellar-mass distributions of our samples, we find 7 sigma evidence of h(4) increasing with cosmic time, from a median value of 0.019 +/- 0.002 at z = 0.8 to 0.059 +/- 0.004 at z = 0.06. Alternatively, we use a physically motivated sample selection based on the mass distribution of the progenitors of local quiescent galaxies as inferred from numerical simulations; in this case, we find 10 sigma evidence. This evolution suggests that, over the last 7 Gyr, there has been a gradual decrease in the rotation-to-dispersion ratio and an increase in the radial anisotropy of the stellar velocity distribution, qualitatively consistent with accretion of gas-poor satellites. These findings demonstrate that massive galaxies continue to accrete mass and increase their dispersion support after becoming quiescent.}},
  author       = {{D'Eugenio, Francesco and van der Wel, Arjen and Piotrowska, Joanna M and Bezanson, Rachel and Taylor, Edward N and van de Sande, Jesse and Baker, William M and Bell, Eric F and Bellstedt, Sabine and Bland-Hawthorn, Joss and Bluck, Asa F L and Brough, Sarah and Bryant, Julia J and Colless, Matthew and Cortese, Luca and Croom, Scott M and Derkenne, Caro and van Dokkum, Pieter and Fisher, Deanne and Foster, Caroline and Gallazzi, Anna and de Graaff, Anna and Groves, Brent and van Houdt, Josha and del P. Lagos, Claudia and Looser, Tobias J and Maiolino, Roberto and Maseda, Michael and Mendel, J Trevor and Nersesian, Angelos and Pacifici, Camilla and Poci, Adriano and Remus, Rhea-Silvia and Sweet, Sarah M and Thater, Sabine and Tran, Kim-Vy and Übler, Hannah and Valenzuela, Lucas M and Wisnioski, Emily and Zibetti, Stefano}},
  issn         = {{0035-8711}},
  journal      = {{MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY}},
  keywords     = {{galaxies: elliptical and lenticular, cD,galaxies: evolution,galaxies: formation,galaxies: fundamental parameters,galaxies: structure,TO-LIGHT RATIO,VELOCITY-DISPERSION EVOLUTION,STELLAR POPULATION SYNTHESIS,POST-STARBURST GALAXIES,HIGH-REDSHIFT GALAXIES,DIGITAL SKY SURVEY,DATA RELEASE 2,STAR-FORMATION,ATLAS(3D) PROJECT,ILLUSTRISTNG SIMULATIONS}},
  language     = {{eng}},
  number       = {{2}},
  pages        = {{2789--2805}},
  title        = {{Evolution in the orbital structure of quiescent galaxies from MAGPI, LEGA-C, and SAMI surveys : direct evidence for merger-driven growth over the last 7 Gyr}},
  url          = {{http://doi.org/10.1093/mnras/stad800}},
  volume       = {{525}},
  year         = {{2023}},
}

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Evolution in the orbital structure of quiescent galaxies from MAGPI, LEGA-C, and SAMI surveys : direct evidence for merger-driven growth over the last 7 Gyr

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