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    Rights statement: This is a pre-copy-editing, author-produced PDF of an article accepted for publication in Monthly Notices of the Royal Astronomical Society following peer review. The definitive publisher-authenticated version Francesco D’Eugenio, Arjen van der Wel, Po-Feng Wu (吳柏锋), Tania M Barone, Josha van Houdt, Rachel Bezanson, Caroline M S Straatman, Camilla Pacifici, Adam Muzzin, Anna Gallazzi, Vivienne Wild, David Sobral, Eric F Bell, Stefano Zibetti, Lamiya Mowla, Marijn Franx, Inverse stellar population age gradients of post-starburst galaxies at z = 0.8 with LEGA-C, Monthly Notices of the Royal Astronomical Society, Volume 497, Issue 1, September 2020, Pages 389–404, is available online at: https://academic.oup.com/mnras/article-abstract/497/1/389/5872492

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Inverse stellar population age gradients of post-starburst galaxies at z=0.8 with LEGA-C

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Inverse stellar population age gradients of post-starburst galaxies at z=0.8 with LEGA-C. / D'Eugenio, Francesco; Wel, Arjen van der; Wu, Po-Feng; Barone, Tania M.; Houdt, Josha van; Bezanson, Rachel; Straatman, Caroline M. S.; Pacifici, Camilla; Muzzin, Adam; Gallazzi, Anna; Wild, Vivienne; Sobral, David; Bell, Eric F.; Zibetti, Stefano; Mowla, Lamiya; Franx, Marijn.

In: Monthly Notices of the Royal Astronomical Society, Vol. 497, No. 1, 01.09.2020, p. 389–404.

Research output: Contribution to journalJournal article

Harvard

D'Eugenio, F, Wel, AVD, Wu, P-F, Barone, TM, Houdt, JV, Bezanson, R, Straatman, CMS, Pacifici, C, Muzzin, A, Gallazzi, A, Wild, V, Sobral, D, Bell, EF, Zibetti, S, Mowla, L & Franx, M 2020, 'Inverse stellar population age gradients of post-starburst galaxies at z=0.8 with LEGA-C', Monthly Notices of the Royal Astronomical Society, vol. 497, no. 1, pp. 389–404. https://doi.org/10.1093/mnras/staa1937

APA

D'Eugenio, F., Wel, A. V. D., Wu, P-F., Barone, T. M., Houdt, J. V., Bezanson, R., Straatman, C. M. S., Pacifici, C., Muzzin, A., Gallazzi, A., Wild, V., Sobral, D., Bell, E. F., Zibetti, S., Mowla, L., & Franx, M. (2020). Inverse stellar population age gradients of post-starburst galaxies at z=0.8 with LEGA-C. Monthly Notices of the Royal Astronomical Society, 497(1), 389–404. https://doi.org/10.1093/mnras/staa1937

Vancouver

D'Eugenio F, Wel AVD, Wu P-F, Barone TM, Houdt JV, Bezanson R et al. Inverse stellar population age gradients of post-starburst galaxies at z=0.8 with LEGA-C. Monthly Notices of the Royal Astronomical Society. 2020 Sep 1;497(1):389–404. https://doi.org/10.1093/mnras/staa1937

Author

D'Eugenio, Francesco ; Wel, Arjen van der ; Wu, Po-Feng ; Barone, Tania M. ; Houdt, Josha van ; Bezanson, Rachel ; Straatman, Caroline M. S. ; Pacifici, Camilla ; Muzzin, Adam ; Gallazzi, Anna ; Wild, Vivienne ; Sobral, David ; Bell, Eric F. ; Zibetti, Stefano ; Mowla, Lamiya ; Franx, Marijn. / Inverse stellar population age gradients of post-starburst galaxies at z=0.8 with LEGA-C. In: Monthly Notices of the Royal Astronomical Society. 2020 ; Vol. 497, No. 1. pp. 389–404.

Bibtex

@article{1cb2fdfcda9e45bc9f4aa10c056eff91,
title = "Inverse stellar population age gradients of post-starburst galaxies at z=0.8 with LEGA-C",
abstract = " We use deep, spatially resolved spectroscopy from the Large Early Galaxy Astrophysics Census Survey to study radial variations in the stellar population of 17 spectroscopically selected post-starburst (PSB) galaxies. We use spectral fitting to measure two Lick indices, H δA and Fe 4383 , and find that, on average, PSB galaxies have radially decreasing H δA and increasing Fe 4383  profiles. In contrast, a control sample of quiescent, non-PSB galaxies in the same mass range shows outwardly increasing H δA and decreasing Fe 4383 . The observed gradients are weak (≈−0.2 {\AA}/Re), mainly due to seeing convolution. A two-SSP (simple stellar population) model suggests that intrinsic gradients are as strong as observed in local PSB galaxies (≈−0.8 {\AA}/Re). We interpret these results in terms of inside-out growth (for the bulk of the quiescent population) versus star formation occurring last in the centre (for PSB galaxies). At z ≈ 0.8, central starbursts are often the result of gas-rich mergers, as evidenced by the high fraction of PSB galaxies with disturbed morphologies and tidal features (40 per cent). Our results provide additional evidence for multiple paths to quiescence: a standard path, associated with inside-out disc formation and with gradually decreasing star formation activity, without fundamental structural transformation, and a fast path, associated with centrally concentrated starbursts, leaving an inverse age gradient and smaller half-light radius.",
keywords = "astro-ph.GA",
author = "Francesco D'Eugenio and Wel, {Arjen van der} and Po-Feng Wu and Barone, {Tania M.} and Houdt, {Josha van} and Rachel Bezanson and Straatman, {Caroline M. S.} and Camilla Pacifici and Adam Muzzin and Anna Gallazzi and Vivienne Wild and David Sobral and Bell, {Eric F.} and Stefano Zibetti and Lamiya Mowla and Marijn Franx",
note = "This is a pre-copy-editing, author-produced PDF of an article accepted for publication in Monthly Notices of the Royal Astronomical Society following peer review. The definitive publisher-authenticated version Francesco D{\textquoteright}Eugenio, Arjen van der Wel, Po-Feng Wu (吳柏锋), Tania M Barone, Josha van Houdt, Rachel Bezanson, Caroline M S Straatman, Camilla Pacifici, Adam Muzzin, Anna Gallazzi, Vivienne Wild, David Sobral, Eric F Bell, Stefano Zibetti, Lamiya Mowla, Marijn Franx, Inverse stellar population age gradients of post-starburst galaxies at z = 0.8 with LEGA-C, Monthly Notices of the Royal Astronomical Society, Volume 497, Issue 1, September 2020, Pages 389–404, is available online at: https://academic.oup.com/mnras/article-abstract/497/1/389/5872492",
year = "2020",
month = sep
day = "1",
doi = "10.1093/mnras/staa1937",
language = "English",
volume = "497",
pages = "389–404",
journal = "Monthly Notices of the Royal Astronomical Society",
issn = "0035-8711",
publisher = "OXFORD UNIV PRESS",
number = "1",

}

RIS

TY - JOUR

T1 - Inverse stellar population age gradients of post-starburst galaxies at z=0.8 with LEGA-C

AU - D'Eugenio, Francesco

AU - Wel, Arjen van der

AU - Wu, Po-Feng

AU - Barone, Tania M.

AU - Houdt, Josha van

AU - Bezanson, Rachel

AU - Straatman, Caroline M. S.

AU - Pacifici, Camilla

AU - Muzzin, Adam

AU - Gallazzi, Anna

AU - Wild, Vivienne

AU - Sobral, David

AU - Bell, Eric F.

AU - Zibetti, Stefano

AU - Mowla, Lamiya

AU - Franx, Marijn

N1 - This is a pre-copy-editing, author-produced PDF of an article accepted for publication in Monthly Notices of the Royal Astronomical Society following peer review. The definitive publisher-authenticated version Francesco D’Eugenio, Arjen van der Wel, Po-Feng Wu (吳柏锋), Tania M Barone, Josha van Houdt, Rachel Bezanson, Caroline M S Straatman, Camilla Pacifici, Adam Muzzin, Anna Gallazzi, Vivienne Wild, David Sobral, Eric F Bell, Stefano Zibetti, Lamiya Mowla, Marijn Franx, Inverse stellar population age gradients of post-starburst galaxies at z = 0.8 with LEGA-C, Monthly Notices of the Royal Astronomical Society, Volume 497, Issue 1, September 2020, Pages 389–404, is available online at: https://academic.oup.com/mnras/article-abstract/497/1/389/5872492

PY - 2020/9/1

Y1 - 2020/9/1

N2 - We use deep, spatially resolved spectroscopy from the Large Early Galaxy Astrophysics Census Survey to study radial variations in the stellar population of 17 spectroscopically selected post-starburst (PSB) galaxies. We use spectral fitting to measure two Lick indices, H δA and Fe 4383 , and find that, on average, PSB galaxies have radially decreasing H δA and increasing Fe 4383  profiles. In contrast, a control sample of quiescent, non-PSB galaxies in the same mass range shows outwardly increasing H δA and decreasing Fe 4383 . The observed gradients are weak (≈−0.2 Å/Re), mainly due to seeing convolution. A two-SSP (simple stellar population) model suggests that intrinsic gradients are as strong as observed in local PSB galaxies (≈−0.8 Å/Re). We interpret these results in terms of inside-out growth (for the bulk of the quiescent population) versus star formation occurring last in the centre (for PSB galaxies). At z ≈ 0.8, central starbursts are often the result of gas-rich mergers, as evidenced by the high fraction of PSB galaxies with disturbed morphologies and tidal features (40 per cent). Our results provide additional evidence for multiple paths to quiescence: a standard path, associated with inside-out disc formation and with gradually decreasing star formation activity, without fundamental structural transformation, and a fast path, associated with centrally concentrated starbursts, leaving an inverse age gradient and smaller half-light radius.

AB - We use deep, spatially resolved spectroscopy from the Large Early Galaxy Astrophysics Census Survey to study radial variations in the stellar population of 17 spectroscopically selected post-starburst (PSB) galaxies. We use spectral fitting to measure two Lick indices, H δA and Fe 4383 , and find that, on average, PSB galaxies have radially decreasing H δA and increasing Fe 4383  profiles. In contrast, a control sample of quiescent, non-PSB galaxies in the same mass range shows outwardly increasing H δA and decreasing Fe 4383 . The observed gradients are weak (≈−0.2 Å/Re), mainly due to seeing convolution. A two-SSP (simple stellar population) model suggests that intrinsic gradients are as strong as observed in local PSB galaxies (≈−0.8 Å/Re). We interpret these results in terms of inside-out growth (for the bulk of the quiescent population) versus star formation occurring last in the centre (for PSB galaxies). At z ≈ 0.8, central starbursts are often the result of gas-rich mergers, as evidenced by the high fraction of PSB galaxies with disturbed morphologies and tidal features (40 per cent). Our results provide additional evidence for multiple paths to quiescence: a standard path, associated with inside-out disc formation and with gradually decreasing star formation activity, without fundamental structural transformation, and a fast path, associated with centrally concentrated starbursts, leaving an inverse age gradient and smaller half-light radius.

KW - astro-ph.GA

U2 - 10.1093/mnras/staa1937

DO - 10.1093/mnras/staa1937

M3 - Journal article

VL - 497

SP - 389

EP - 404

JO - Monthly Notices of the Royal Astronomical Society

JF - Monthly Notices of the Royal Astronomical Society

SN - 0035-8711

IS - 1

ER -