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Newborn spheroids at high redshift : When and how did the dominant, old stars in today's massive galaxies form? / Kaviraj, S.; Silk, J.; Ellis, R.S.; Cohen, S.; Windhorst, R.A.; Peirani, S.; O'Connell, R.W.; Whitmore, B.C.; Ryan Jr., R.E.; Hathi, N.P.; Dopita, M.A.; Frogel, J.A.; Dekel, A.

In: Monthly Notices of the Royal Astronomical Society, Vol. 428, No. 2, 11.01.2013, p. 925-934.

Research output: Contribution to journalArticle

Harvard

Kaviraj, S, Silk, J, Ellis, RS, Cohen, S, Windhorst, RA, Peirani, S, O'Connell, RW, Whitmore, BC, Ryan Jr., RE, Hathi, NP, Dopita, MA, Frogel, JA & Dekel, A 2013, 'Newborn spheroids at high redshift: When and how did the dominant, old stars in today's massive galaxies form?', Monthly Notices of the Royal Astronomical Society, vol. 428, no. 2, pp. 925-934. https://doi.org/10.1093/mnras/sts031

APA

Kaviraj, S., Silk, J., Ellis, R. S., Cohen, S., Windhorst, R. A., Peirani, S., O'Connell, R. W., Whitmore, B. C., Ryan Jr., R. E., Hathi, N. P., Dopita, M. A., Frogel, J. A., & Dekel, A. (2013). Newborn spheroids at high redshift: When and how did the dominant, old stars in today's massive galaxies form? Monthly Notices of the Royal Astronomical Society, 428(2), 925-934. https://doi.org/10.1093/mnras/sts031

Vancouver

Author

Kaviraj, S. ; Silk, J. ; Ellis, R.S. ; Cohen, S. ; Windhorst, R.A. ; Peirani, S. ; O'Connell, R.W. ; Whitmore, B.C. ; Ryan Jr., R.E. ; Hathi, N.P. ; Dopita, M.A. ; Frogel, J.A. ; Dekel, A. / Newborn spheroids at high redshift : When and how did the dominant, old stars in today's massive galaxies form?. In: Monthly Notices of the Royal Astronomical Society. 2013 ; Vol. 428, No. 2. pp. 925-934.

Bibtex

@article{924d3e475e6447df99042dc3b38034ee,
title = "Newborn spheroids at high redshift: When and how did the dominant, old stars in today's massive galaxies form?",
abstract = "We study ~330 massive (M > 10M), newborn spheroidal galaxies (SGs) around the epoch of peak star formation (1 10M are ~2 Gyr older than their counterparts with M <10M. Nevertheless, a smooth downsizing trend with galaxy mass is not observed, and the large scatter in starburst ages indicates that SGs are not a particularly coeval population. Around half of the blue SGs appear not to drive their star formation via major mergers, and those that have experienced a recent major merger show only modest enhancements (~40 per cent) in their specific star formation rates. Our empirical study indicates that processes other than major mergers (e.g. violent disc instability driven by cold streams and/or minor mergers) likely play a dominant role in building SGs, and creating a significant fraction of the old stellar populations that dominate today's Universe.",
author = "S. Kaviraj and J. Silk and R.S. Ellis and S. Cohen and R.A. Windhorst and S. Peirani and R.W. O'Connell and B.C. Whitmore and {Ryan Jr.}, R.E. and N.P. Hathi and M.A. Dopita and J.A. Frogel and A. Dekel",
year = "2013",
month = jan,
day = "11",
doi = "10.1093/mnras/sts031",
language = "English",
volume = "428",
pages = "925--934",
journal = "Monthly Notices of the Royal Astronomical Society",
issn = "0035-8711",
publisher = "Oxford University Press",
number = "2",

}

RIS

TY - JOUR

T1 - Newborn spheroids at high redshift

T2 - When and how did the dominant, old stars in today's massive galaxies form?

AU - Kaviraj, S.

AU - Silk, J.

AU - Ellis, R.S.

AU - Cohen, S.

AU - Windhorst, R.A.

AU - Peirani, S.

AU - O'Connell, R.W.

AU - Whitmore, B.C.

AU - Ryan Jr., R.E.

AU - Hathi, N.P.

AU - Dopita, M.A.

AU - Frogel, J.A.

AU - Dekel, A.

PY - 2013/1/11

Y1 - 2013/1/11

N2 - We study ~330 massive (M > 10M), newborn spheroidal galaxies (SGs) around the epoch of peak star formation (1 10M are ~2 Gyr older than their counterparts with M <10M. Nevertheless, a smooth downsizing trend with galaxy mass is not observed, and the large scatter in starburst ages indicates that SGs are not a particularly coeval population. Around half of the blue SGs appear not to drive their star formation via major mergers, and those that have experienced a recent major merger show only modest enhancements (~40 per cent) in their specific star formation rates. Our empirical study indicates that processes other than major mergers (e.g. violent disc instability driven by cold streams and/or minor mergers) likely play a dominant role in building SGs, and creating a significant fraction of the old stellar populations that dominate today's Universe.

AB - We study ~330 massive (M > 10M), newborn spheroidal galaxies (SGs) around the epoch of peak star formation (1 10M are ~2 Gyr older than their counterparts with M <10M. Nevertheless, a smooth downsizing trend with galaxy mass is not observed, and the large scatter in starburst ages indicates that SGs are not a particularly coeval population. Around half of the blue SGs appear not to drive their star formation via major mergers, and those that have experienced a recent major merger show only modest enhancements (~40 per cent) in their specific star formation rates. Our empirical study indicates that processes other than major mergers (e.g. violent disc instability driven by cold streams and/or minor mergers) likely play a dominant role in building SGs, and creating a significant fraction of the old stellar populations that dominate today's Universe.

U2 - 10.1093/mnras/sts031

DO - 10.1093/mnras/sts031

M3 - Article

AN - SCOPUS:84873821311

VL - 428

SP - 925

EP - 934

JO - Monthly Notices of the Royal Astronomical Society

JF - Monthly Notices of the Royal Astronomical Society

SN - 0035-8711

IS - 2

ER -