J/MNRAS/462/4336 GAMA. Stellar mass budget (Moffett+, 2016)
Galaxy and Mass Assembly (GAMA):
the stellar mass budget of galaxy spheroids and discs.
Moffett A.J., Lange R., Driver S.P., Robotham A.S.G., Kelvin L.S.,
Alpaslan M., Andrews S.K., Bland-Hawthorn J., Brough S., Cluver M.E.,
Colless M., Davies L.J.M., Holwerda B.W., Hopkins A.M., Kafle P.R.,
Liske J., Meyer M.
<Mon. Not. R. Astron. Soc., 462, 4336-4348 (2016)>
=2016MNRAS.462.4336M 2016MNRAS.462.4336M (SIMBAD/NED BibCode)
ADC_Keywords: Galaxy catalogs ; Models ; Stars, masses
Keywords: galaxies: elliptical and lenticular, cD -
galaxies: fundamental parameters -
galaxies: luminosity function, mass function - galaxies: spiral -
galaxies: statistics
Abstract:
We build on a recent photometric decomposition analysis of 7506 Galaxy
and Mass Assembly (GAMA) survey galaxies to derive stellar mass
function fits to individual spheroid and disc component populations
down to a lower mass limit of log(M*/M☉)=8. We find that
the spheroid/disc mass distributions for individual galaxy
morphological types are well described by single Schechter function
forms. We derive estimates of the total stellar mass densities in
spheroids (ρspheroid=1.24±0.49x108M☉Mpc-3h0.7) and
discs (ρdisc=1.20±0.45x108M☉Mpc-3h0.7), which
translates to approximately 50 per cent of the local stellar mass
density in spheroids and 48 per cent in discs. The remaining stellar
mass is found in the dwarf 'little blue spheroid' class, which is not
obviously similar in structure to either classical spheroid or disc
populations. We also examine the variation of component mass ratios
across galaxy mass and group halo mass regimes, finding the transition
from spheroid to disc mass dominance occurs near galaxy stellar mass
∼1011M☉ and group halo mass ∼1012.5M☉/h. We
further quantify the variation in spheroid-to-total mass ratio with
group halo mass for central and satellite populations as well as the
radial variation of this ratio within groups.
Description:
Using the recently expanded Galaxy and Mass Assembly (GAMA) survey
phase II visual morphology sample and the large-scale bulge and disc
decomposition analysis of Lange et al. (2016MNRAS.462.1470L 2016MNRAS.462.1470L), we
derive new stellar mass function fits to galaxy spheroid and disc
populations down to log(M*/M☉)=8.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table2.dat 635 36 Binned stellar mass function data points for
individual galaxy populations,
as shown in Figs 3 and 6
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See also:
J/MNRAS/413/971 : Galaxy And Mass Assembly (GAMA) DR1 (Driver+, 2011)
J/MNRAS/449/4277 : GAMA blended spectra catalogue (Holwerda+, 2015)
J/MNRAS/452/2087 : Galaxy And Mass Assembly (GAMA): DR2 (Liske+, 2015)
Byte-by-byte Description of file: table2.dat
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Bytes Format Units Label Explanations
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1- 5 F5.2 --- Massbins Stellar mass bin midpoints
7- 26 E20.15 --- b_E E stellar mass function (lower bound)
28- 47 E20.15 --- E E stellar mass function (measurement)
49- 68 E20.15 --- B_E E stellar mass function (upper bound)
70- 89 E20.15 --- b_S0Sab S0-Sa bulge stellar mass function
(lower bound)
91-110 E20.15 --- S0Sab S0-Sa bulge stellar mass function
(measurement)
112-131 E20.15 --- B_S0Sab S0-Sa bulge stellar mass function
(upper bound)
133-152 E20.15 --- b_S0Sad S0-Sa disc stellar mass function
(lower bound)
154-173 E20.15 --- S0Sad S0-Sa disc stellar mass function
(measurement)
175-194 E20.15 --- B_S0Sad S0-Sa disc stellar mass function
(upper bound)
196-215 E20.15 --- b_SabScdb Sab-Scd bulge stellar mass function
(lower bound)
217-236 E20.15 --- SabScdb Sab-Scd bulge stellar mass function
(measurement)
238-257 F20.18 --- B_SabScdb Sab-Scd bulge stellar mass function
(upper bound)
259-278 E20.15 --- b_SabScdd Sab-Scd disc stellar mass function
(lower bound)
280-299 E20.15 --- SabScdd Sab-Scd disc stellar mass function
(measurement)
301-320 E20.15 --- B_SabScdd Sab-Scd disc stellar mass function
(upper bound)
322-341 E20.15 --- b_SabScdcomb Sab-Scd combined stellar mass function
(lower bound)
343-362 E20.15 --- SabScdcomb Sab-Scd combined stellar mass function
(measurement)
364-383 E20.15 --- B_SabScdcomb Sab-Scd combined stellar mass function
(upper bound)
385-404 E20.15 --- b_SdIrr Sd-Irr stellar mass function (lower bound)
406-425 E20.15 --- SdIrr Sd-Irr stellar mass function (measurement)
427-446 E20.15 --- B_SdIrr Sd-Irr stellar mass function (upper bound)
448-467 E20.15 --- b_LBS LBS stellar mass function (lower bound)
469-488 E20.15 --- LBS LBS stellar mass function (measurement)
490-509 F20.18 --- B_LBS LBS stellar mass function (upper bound)
511-530 E20.15 --- b_Sph All spheroid stellar mass function
(lower bound)
532-551 E20.15 --- Sph All spheroid stellar mass function
(measurement)
553-572 E20.15 --- B_Sph All spheroid stellar mass function
(upper bound)
574-593 E20.15 --- b_Disk All disc stellar mass function (lower bound)
595-614 F20.18 --- Disk All disc stellar mass function (measurement)
616-635 F20.18 --- B_Disk All disc stellar mass function (upper bound)
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History:
From electronic version of the journal
(End) Patricia Vannier [CDS] 25-Apr-2018