J/MNRAS/432/3141 Morphological classification of PM2GC galaxies (Calvi+, 2013)
The impact of global environment on galaxy mass functions at low redshift.
Calvi R., Poggianti B.M., Vulcani B., Fasano G.
<Mon. Not. R. Astron. Soc., 432, 3141-3152 (2013)>
=2013MNRAS.432.3141C 2013MNRAS.432.3141C
ADC_Keywords: Clusters, galaxy ; Morphology
Keywords: galaxies: clusters: general - galaxies: groups: general -
galaxies: luminosity function, mass function
Abstract:
We study the galaxy stellar mass function in different environments in
the local Universe, considering both the total mass function and that
of individual galaxy morphological types. We compare the mass
functions of galaxies with log10M*/M☉≥10.25 in the general
field and in galaxy groups, binary and single galaxy systems from the
Padova-Millennium Galaxy and Group Catalogue at z=0.04-0.1 with the
mass function of galaxy clusters of the WIde-field Nearby
Galaxy-Cluster Survey at z=0.04-0.07. Strikingly, the variations of
the mass function with global environment, overall, are small and
subtle. The shapes of the mass functions of the general field and
clusters are indistinguishable, and only small, statistically
insignificant variations are allowed in groups. Only the mass function
of our single galaxies, representing the least massive haloes and
comprising less than a third of the general field population, is
proportionally richer in low-mass galaxies than other environments.
The most notable environmental effect is a progressive change in the
upper galaxy mass, with very massive galaxies found only in the most
massive environments. This environment-dependent mass cut-off is
unable to affect the Schechter parameters and the Kolmogorov-Smirnov
test, and can only be revealed by an ad hoc analysis. Finally, we show
how, in each given environment, the mass function changes with
morphological type, and that galaxies of the same morphological type
can have different mass functions in different environments.
Description:
The PM2GC (Calvi et al., 2011MNRAS.416..727C 2011MNRAS.416..727C, cat. J/MNRAS/416/727)
is a data base built on the basis of the Millennium Galaxy Catalogue
(MGC), a deep and wide B-imaging survey along an equatorial strip of
∼38deg2 obtained with the Isaac Newton Telescope (INT). The design,
execution, reduction, object detection and preliminary analysis of
this survey are described in Liske et al. (2003MNRAS.344..307L 2003MNRAS.344..307L, see
VII/240). The MGC field lies within the 2dFGRS Northern Galactic Cap
region and the SDSS region and a detailed comparison of the MGC with
these surveys is described in Cross et al. (2004MNRAS.349..576C 2004MNRAS.349..576C)
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table7.dat 11 3210 Catalogue of the morphological classification of
all galaxies in the PM2GC sample
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See also:
VII/240 : Millennium Galaxy Catalogue (Liske+, 2003)
J/MNRAS/416/727 : Padova-Millennium Galaxy and Group Catalogue (Calvi+, 2011)
Byte-by-byte Description of file: table7.dat
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Bytes Format Units Label Explanations
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1- 5 I5 --- MGC Galaxy serial number in MGC and PM2GC
7- 11 F5.1 --- MType ?=99 MORPHOT classification (1)
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Note (1): MORPHOT classification as:
Ellipticals : MType < -4.25
S0s : -4.25 ≤ MType ≤ 0
Late-types : MType > 0
not classified : MType = 99.0
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History:
From electronic version of the journal
(End) Patricia Vannier [CDS] 08-Jul-2014