TY - JOUR
T1 - Deep extragalactic visible legacy survey (DEVILS)
T2 - the emergence of bulges and decline of disc growth since z = 1
AU - Hashemizadeh, Abdolhosein
AU - Driver, Simon P.
AU - Davies, Luke J.M.
AU - Robotham, Aaron S.G.
AU - Bellstedt, Sabine
AU - Foster, Caroline
AU - Holwerda, Benne W.
AU - Jarvis, Matt
AU - Phillipps, Steven
AU - Siudek, Malgorzata
AU - Thorne, Jessica E.
AU - Windhorst, Rogier A.
AU - Wolf, Christian
N1 - Funding Information:
DEVILS is an Australian project based around a spectroscopic campaign using the Anglo-Australian Telescope. The DEVILS input catalogue is generated from data taken as part of the ESO VISTA- VIDEO (Jarvis et al. 2013 ) and UltraVISTA (McCracken et al. 2012 ) surv e ys. DEVILS is part funded via Disco v ery Programs by the Australian Research Council and the participating institutions. The DEVILS website is https://devilsur vey.or g. The DEVILS data are hosted and provided by AAO Data Central ( ht tps://datacent ra l.org.au ). This work was supported by resources provided by The P a wse y Supercomputing Centre with funding from the Australian Go v ernment and the Go v ernment of W estern Australia. W e also gratefully acknowledge the contribution of the entire COSMOS col- laboration consisting of more than 200 scientists. The HST COSMOS Treasury program was supported through NASA grant HST -GO- 09822. SB and SPD acknowledge support by the Australian Research Council's funding scheme DP180103740. MS has been supported by the European Union's Horizon 2020 research and innovation programme under the Maria Sklodowska-Curie (grant agreement No 754510), the National Science Centre of Poland (grant UMO- 2016/23/N/ST9/02963), and by the Spanish Ministry of Science and Innovation through Juan de la Cierva-formacion program (refer- ence FJC2018-038792-I). ASGR and LJMD acknowledge support from the Australian Research Council's Future Fellowship scheme (FT200100375 and FT200100055, respectively). This work w as made possible by the free and open R software (R Core Team 2020 ). A number of figures in this paper were generated using the R magicaxis package (Robotham 2016b ). This work also use of the celestial package (Robotham 2016a ) and dftools (Obreschkow et al. 2018 ).
Publisher Copyright:
© 2022 The Author(s) Published by Oxford University Press on behalf of Royal Astronomical Society.
PY - 2022/9/1
Y1 - 2022/9/1
N2 - We present a complete structural analysis of the ellipticals (E), diffuse bulges (dB), compact bulges (cB), and discs (D) within a redshift range 0 < z < 1, and stellar mass log10(M∗/M⊙) ≥ 9.5 volume-limited sample drawn from the combined DEVILS and HST-COSMOS region. We use the profit code to profile over ∼35 000 galaxies for which visual classification into single or double component was pre-defined in Paper-I. Over this redshift range, we see a growth in the total stellar mass density (SMD) of a factor of 1.5. At all epochs we find that the dominant structure, contributing to the total SMD, is the disc, and holds a fairly constant share of ∼ 60 per cent of the total SMD from z = 0.8 to z = 0.2, dropping to ∼ 30 per cent at z = 0.0 (representing ∼ 33 per cent decline in the total disc SMD). Other classes (E, dB, and cB) show steady growth in their numbers and integrated stellar mass densities. By number, the most dramatic change across the full mass range is in the growth of diffuse bulges. In terms of total SMD, the biggest gain is an increase in massive elliptical systems, rising from 20 per cent at z = 0.8 to equal that of discs at z = 0.0 (30 per cent) representing an absolute mass growth of a factor of 2.5. Overall, we see a clear picture of the emergence and growth of all three classes of spheroids over the past 8 Gyr, and infer that in the later half of the Universe's timeline spheroid-forming processes and pathways (secular evolution, mass-accretion, and mergers) appear to dominate mass transformation over quiescent disc growth.
AB - We present a complete structural analysis of the ellipticals (E), diffuse bulges (dB), compact bulges (cB), and discs (D) within a redshift range 0 < z < 1, and stellar mass log10(M∗/M⊙) ≥ 9.5 volume-limited sample drawn from the combined DEVILS and HST-COSMOS region. We use the profit code to profile over ∼35 000 galaxies for which visual classification into single or double component was pre-defined in Paper-I. Over this redshift range, we see a growth in the total stellar mass density (SMD) of a factor of 1.5. At all epochs we find that the dominant structure, contributing to the total SMD, is the disc, and holds a fairly constant share of ∼ 60 per cent of the total SMD from z = 0.8 to z = 0.2, dropping to ∼ 30 per cent at z = 0.0 (representing ∼ 33 per cent decline in the total disc SMD). Other classes (E, dB, and cB) show steady growth in their numbers and integrated stellar mass densities. By number, the most dramatic change across the full mass range is in the growth of diffuse bulges. In terms of total SMD, the biggest gain is an increase in massive elliptical systems, rising from 20 per cent at z = 0.8 to equal that of discs at z = 0.0 (30 per cent) representing an absolute mass growth of a factor of 2.5. Overall, we see a clear picture of the emergence and growth of all three classes of spheroids over the past 8 Gyr, and infer that in the later half of the Universe's timeline spheroid-forming processes and pathways (secular evolution, mass-accretion, and mergers) appear to dominate mass transformation over quiescent disc growth.
KW - galaxies: bulges
KW - galaxies: evolution
KW - galaxies: formation
KW - galaxies: general
KW - galaxies: structure
UR - http://www.scopus.com/inward/record.url?scp=85135378158&partnerID=8YFLogxK
U2 - 10.1093/mnras/stac1195
DO - 10.1093/mnras/stac1195
M3 - Article
AN - SCOPUS:85135378158
SN - 0035-8711
VL - 515
SP - 1175
EP - 1198
JO - Monthly Notices of the Royal Astronomical Society
JF - Monthly Notices of the Royal Astronomical Society
IS - 1
ER -