Galaxy And Mass Assembly (GAMA): stellar mass functions by Hubble type
In: Kelvin, LS, Driver, SP, Robotham, ASG, Taylor, EN, Graham, AW, Alpaslan, M, Baldry, IK, Bamford, 2014, S. 1647-1659
Online
academicJournal
Zugriff:
We present an estimate of the galaxy stellar mass function and its division by morphological type in the local (0.025 < z < 0.06) Universe. Adopting robust morphological classifications as previously presented (Kelvin et al.) for a sample of 3, 727 galaxies taken from the Galaxy And Mass Assembly survey, we define a local volume and stellar mass limited sub-sample of 2, 711 galaxies to a lower stellar mass limit of M = 109.0M_. We confirm that the galaxy stellar mass function is well described by a double Schechter function given by M_ = 1010.64M_, _1 = −0.43, __1 = 4.18 dex−1Mpc−3, _2 = −1.50 and __2 = 0.74 dex−1Mpc−3. The constituent morphological-type stellar mass functions are well sampled above our lower stellar mass limit, excepting the faint little blue spheroid population of galaxies. We find approximately 71+3−4% of the stellar mass in the local Universe is found within spheroid dominated galaxies; ellipticals and S0-Sas. The remaining 29+4−3% falls predominantly within late type disk dominated systems, Sab-Scds and Sd-Irrs. Adopting reasonable bulge-to-total ratios implies that approximately half the stellar mass today resides in spheroidal structures, and half in disk structures. Within this local sample, we find approximate stellar mass proportions for E : S0 Sa : Sab-Scd : Sd-Irr of 34 : 37 : 24 : 5.
Titel: |
Galaxy And Mass Assembly (GAMA): stellar mass functions by Hubble type
|
---|---|
Autor/in / Beteiligte Person: | Kelvin, LS ; Driver, SP ; Robotham, ASG ; Taylor, EN ; Graham, AW ; Alpaslan, M ; Baldry, IK ; Bamford, SP ; Bauer, AE ; Bland-Hawthorn, J ; Brown, MJI ; Colless, M ; Conselice, CJ ; Holwerda, BW ; Hopkins, AM ; Lara-Lopez, MA ; Liske, J ; Lopez-Sanchez, AR ; Loveday, J ; Norberg, P ; Phillipps, S ; Popescu, CC ; Prescott, M ; Sansom, AE ; Tuffs, RJ |
Link: | |
Zeitschrift: | Kelvin, LS, Driver, SP, Robotham, ASG, Taylor, EN, Graham, AW, Alpaslan, M, Baldry, IK, Bamford, 2014, S. 1647-1659 |
Veröffentlichung: | OXFORD UNIV PRESS, 2014 |
Medientyp: | academicJournal |
DOI: | 10.1093/mnras/stu1507 |
Schlagwort: |
|
Sonstiges: |
|