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    Rights statement: This is an author-created, un-copyedited version of an article accepted for publication/published in The Astrophysical Journal. IOP Publishing Ltd is not responsible for any errors or omissions in this version of the manuscript or any version derived from it. The Version of Record is available online at doi: 10.3847/1538-4357/ab164d.

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Rejuvenation in z~0.8 quiescent galaxies in LEGA-C

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Rejuvenation in z~0.8 quiescent galaxies in LEGA-C. / Chauke, Priscilla; Wel, Arjen van der; Pacifici, Camilla; Bezanson, Rachel; Wu, Po-Feng; Gallazzi, Anna; Straatman, Caroline; Franx, Marijn; Barišić, Ivana; Bell, Eric F.; Houdt, Josha van; Maseda, Michael V.; Muzzin, Adam; Sobral, David; Spilker, Justin.

In: The Astrophysical Journal, Vol. 877, No. 1, 48, 23.05.2019.

Research output: Contribution to Journal/MagazineJournal articlepeer-review

Harvard

Chauke, P, Wel, AVD, Pacifici, C, Bezanson, R, Wu, P-F, Gallazzi, A, Straatman, C, Franx, M, Barišić, I, Bell, EF, Houdt, JV, Maseda, MV, Muzzin, A, Sobral, D & Spilker, J 2019, 'Rejuvenation in z~0.8 quiescent galaxies in LEGA-C', The Astrophysical Journal, vol. 877, no. 1, 48. https://doi.org/10.3847/1538-4357/ab164d

APA

Chauke, P., Wel, A. V. D., Pacifici, C., Bezanson, R., Wu, P-F., Gallazzi, A., Straatman, C., Franx, M., Barišić, I., Bell, E. F., Houdt, J. V., Maseda, M. V., Muzzin, A., Sobral, D., & Spilker, J. (2019). Rejuvenation in z~0.8 quiescent galaxies in LEGA-C. The Astrophysical Journal, 877(1), [48]. https://doi.org/10.3847/1538-4357/ab164d

Vancouver

Chauke P, Wel AVD, Pacifici C, Bezanson R, Wu P-F, Gallazzi A et al. Rejuvenation in z~0.8 quiescent galaxies in LEGA-C. The Astrophysical Journal. 2019 May 23;877(1). 48. https://doi.org/10.3847/1538-4357/ab164d

Author

Chauke, Priscilla ; Wel, Arjen van der ; Pacifici, Camilla ; Bezanson, Rachel ; Wu, Po-Feng ; Gallazzi, Anna ; Straatman, Caroline ; Franx, Marijn ; Barišić, Ivana ; Bell, Eric F. ; Houdt, Josha van ; Maseda, Michael V. ; Muzzin, Adam ; Sobral, David ; Spilker, Justin. / Rejuvenation in z~0.8 quiescent galaxies in LEGA-C. In: The Astrophysical Journal. 2019 ; Vol. 877, No. 1.

Bibtex

@article{24105e1ac0f1431b8fdc990251b0c2c4,
title = "Rejuvenation in z~0.8 quiescent galaxies in LEGA-C",
abstract = "We use reconstructed star-formation histories (SFHs) of quiescent galaxies at z = 0.6 − 1 in the LEGA-C survey to identify secondary star-formation episodes that, after an initial period of quiescence, moved the galaxies back to the star-forming main sequence (blue cloud). 16 ± 3% of the z ∼ 0.8 quiescent population has experienced such rejuvenation events in the redshift range 0.7 < z < 1.5 after reaching quiescence at some earlier time. On average, these galaxies first became quiescent at z = 1.2, and those that rejuvenated, remained quiescent for ∼ 1Gyr before their secondary SF episode which lasted ∼ 0.7Gyr. The stellar mass attributed to rejuvenation is on average 10% of the galaxy stellar mass, with rare instances of an increase of more than a factor 2. Overall, rejuvenation events only contribute ∼ 2% of the total stellar mass in z ∼ 0.8 quiescent galaxies and we conclude that rejuvenation is not an important evolutionary channel when considering the growth of the red sequence. However, our results complicate the interpretation of galaxy demographics in color space: the galaxies with rejuvenation events tend to lie in the so-called {\textquoteleft}green valley{\textquoteright}, yet their progenitors were quiescent at z ∼ 2.",
author = "Priscilla Chauke and Wel, {Arjen van der} and Camilla Pacifici and Rachel Bezanson and Po-Feng Wu and Anna Gallazzi and Caroline Straatman and Marijn Franx and Ivana Bari{\v s}i{\'c} and Bell, {Eric F.} and Houdt, {Josha van} and Maseda, {Michael V.} and Adam Muzzin and David Sobral and Justin Spilker",
note = "This is an author-created, un-copyedited version of an article accepted for publication/published in The Astrophysical Journal. IOP Publishing Ltd is not responsible for any errors or omissions in this version of the manuscript or any version derived from it. The Version of Record is available online at doi: 10.3847/1538-4357/ab164d",
year = "2019",
month = may,
day = "23",
doi = "10.3847/1538-4357/ab164d",
language = "English",
volume = "877",
journal = "The Astrophysical Journal",
issn = "0004-637X",
publisher = "Institute of Physics Publishing",
number = "1",

}

RIS

TY - JOUR

T1 - Rejuvenation in z~0.8 quiescent galaxies in LEGA-C

AU - Chauke, Priscilla

AU - Wel, Arjen van der

AU - Pacifici, Camilla

AU - Bezanson, Rachel

AU - Wu, Po-Feng

AU - Gallazzi, Anna

AU - Straatman, Caroline

AU - Franx, Marijn

AU - Barišić, Ivana

AU - Bell, Eric F.

AU - Houdt, Josha van

AU - Maseda, Michael V.

AU - Muzzin, Adam

AU - Sobral, David

AU - Spilker, Justin

N1 - This is an author-created, un-copyedited version of an article accepted for publication/published in The Astrophysical Journal. IOP Publishing Ltd is not responsible for any errors or omissions in this version of the manuscript or any version derived from it. The Version of Record is available online at doi: 10.3847/1538-4357/ab164d

PY - 2019/5/23

Y1 - 2019/5/23

N2 - We use reconstructed star-formation histories (SFHs) of quiescent galaxies at z = 0.6 − 1 in the LEGA-C survey to identify secondary star-formation episodes that, after an initial period of quiescence, moved the galaxies back to the star-forming main sequence (blue cloud). 16 ± 3% of the z ∼ 0.8 quiescent population has experienced such rejuvenation events in the redshift range 0.7 < z < 1.5 after reaching quiescence at some earlier time. On average, these galaxies first became quiescent at z = 1.2, and those that rejuvenated, remained quiescent for ∼ 1Gyr before their secondary SF episode which lasted ∼ 0.7Gyr. The stellar mass attributed to rejuvenation is on average 10% of the galaxy stellar mass, with rare instances of an increase of more than a factor 2. Overall, rejuvenation events only contribute ∼ 2% of the total stellar mass in z ∼ 0.8 quiescent galaxies and we conclude that rejuvenation is not an important evolutionary channel when considering the growth of the red sequence. However, our results complicate the interpretation of galaxy demographics in color space: the galaxies with rejuvenation events tend to lie in the so-called ‘green valley’, yet their progenitors were quiescent at z ∼ 2.

AB - We use reconstructed star-formation histories (SFHs) of quiescent galaxies at z = 0.6 − 1 in the LEGA-C survey to identify secondary star-formation episodes that, after an initial period of quiescence, moved the galaxies back to the star-forming main sequence (blue cloud). 16 ± 3% of the z ∼ 0.8 quiescent population has experienced such rejuvenation events in the redshift range 0.7 < z < 1.5 after reaching quiescence at some earlier time. On average, these galaxies first became quiescent at z = 1.2, and those that rejuvenated, remained quiescent for ∼ 1Gyr before their secondary SF episode which lasted ∼ 0.7Gyr. The stellar mass attributed to rejuvenation is on average 10% of the galaxy stellar mass, with rare instances of an increase of more than a factor 2. Overall, rejuvenation events only contribute ∼ 2% of the total stellar mass in z ∼ 0.8 quiescent galaxies and we conclude that rejuvenation is not an important evolutionary channel when considering the growth of the red sequence. However, our results complicate the interpretation of galaxy demographics in color space: the galaxies with rejuvenation events tend to lie in the so-called ‘green valley’, yet their progenitors were quiescent at z ∼ 2.

U2 - 10.3847/1538-4357/ab164d

DO - 10.3847/1538-4357/ab164d

M3 - Journal article

VL - 877

JO - The Astrophysical Journal

JF - The Astrophysical Journal

SN - 0004-637X

IS - 1

M1 - 48

ER -