scholarly journals Modelling the ages and metallicities of early-type galaxies in Fundamental Plane space

2014 ◽  
Vol 445 (3) ◽  
pp. 3092-3104 ◽  
Author(s):  
L. A. Porter ◽  
R. S. Somerville ◽  
J. R. Primack ◽  
D. J. Croton ◽  
M. D. Covington ◽  
...  
Keyword(s):  
Early Type ◽  
Fundamental Plane ◽  
Plane Space

scholarly journals Stellar Populations of the Most Massive Galaxies

2009 ◽  
Vol 5 (S267) ◽  
pp. 459-459
Author(s):  
Alexander Fritz ◽  
Michael D. Hoenig ◽  
Ricardo P. Schiavon
Keyword(s):  
High Velocity ◽  
Surface Brightness ◽  
Stellar Populations ◽  
Spectroscopic Properties ◽  
Low Density ◽  
Early Type ◽  
Small Surface ◽  
Fundamental Plane ◽  
Massive Galaxies ◽  
Bona Fide

Within the hierarchical CDM framework, gas-poor mergers contribute substantially to the building of the most massive galaxies (Faber et al. 2007). We want to test this scenario by studying the fundamental plane (FP) and the stellar populations of the most massive galaxies. We investigate a well-defined sample of massive early-type galaxies at 0.1<z<0.4, identified from the SDSS database. Out of 42,000 possible targets in the SDSS database, we extracted 23 luminous early-type galaxies with bona fide high velocity dispersions of σ>350 km s−1. These systems are located either in high or low-density environments and show a variety of small surface-brightness structure. Using archival HST/ACS images and Gemini/GMOS spectroscopy, we will explore the photometric and spectroscopic properties of these galaxies.

scholarly journals The SDSS‐UKIDSS Fundamental Plane of Early‐Type Galaxies

2008 ◽  
Vol 689 (2) ◽  
pp. 913-918 ◽  
Author(s):  
F. La Barbera ◽  
G. Busarello ◽  
P. Merluzzi ◽  
I. G. de la Rosa ◽  
G. Coppola ◽  
...  
Keyword(s):  
Early Type ◽  
Fundamental Plane

scholarly journals Measuring the Evolution of the M/L ratio from the Fundamental Plane in Cl 0024+16 at z=0.39

1996 ◽  
Vol 171 ◽  
pp. 233-240 ◽  
Author(s):  
Marijn Franx ◽  
Pieter G. van Dokkum
Keyword(s):  
Luminosity Function ◽  
Evolutionary Models ◽  
Early Type ◽  
Rich Cluster ◽  
Fundamental Plane ◽  
Evolution Of Galaxies ◽  
Cluster Environment ◽  
Dynamical Properties ◽  
The Rich

The existence of the Fundamental Plane of early-type galaxies implies that the M/L ratios of early-types are well behaved. It provides therefore an important tool to measure the evolution of the M/L ratio with redshift. These measurements, in combination with measurements of the evolution of the luminosity function, can be used to constrain the mass evolution of galaxies.We present the Fundamental Plane relation measured for galaxies in the rich cluster CL 0024+16 at z=0.391. The galaxies satisfy a tight Fundamental Plane, with relatively low scatter (15 %). The M/L is 31 ± 12 % lower than the M/L measured in Coma, which is consistent with simple evolutionary models. Hence, galaxies with very similar dynamical properties existed at a z=0.4.More, and deeper data are needed to measure the evolution of the slope and the scatter of the Fundamental Plane to higher accuracy. Furthermore, data on the richest nearby clusters would be valuable to test the hypothesis that the Fundamental Plane is independent of cluster environment.

scholarly journals Evolution of the fundamental plane of 0.2  <  z  <  1.2 early-type galaxies in the EGS

2010 ◽  
Vol 526 ◽  
pp. A72 ◽  
Author(s):  
M. Fernández Lorenzo ◽  
J. Cepa ◽  
A. Bongiovanni ◽  
A. M. Pérez García ◽  
A. Ederoclite ◽  
...  
Keyword(s):  
Early Type ◽  
Fundamental Plane

scholarly journals The DN − σ and Fundamental Plane Relations as Distance Indicators of Early Type Galaxies in the Virgo and Fornax Clusters

1996 ◽  
Vol 171 ◽  
pp. 366-366
Author(s):  
M. D'Onofrio ◽  
S. Zaggia ◽  
M. Capaccioli ◽  
G. Longo ◽  
N. Caon
Keyword(s):  
Rotation Velocity ◽  
Geometrical Parameters ◽  
Early Type ◽  
Homogeneous Sample ◽  
Fundamental Plane ◽  
Total Luminosity ◽  
The Mean ◽  
Distance Indicators ◽  
Light Profiles

We investigate the properties of early-type galaxies as distance indicators by applying the Dn – σ, Fundamental Plane (FP), and log(m) – log re relations to a complete and fairly homogeneous sample of galaxies members of the Virgo and Fornax clusters. The relative mean distance of the two clusters can be derived with an accuracy up to ∼ 3% provided that the internal kinematics of the galaxies is taken into account and a correct statistical approach is used.The residuals of the Dn – σ and FP relationships do not correlate with many structural and geometrical parameters of the galaxies: the mean effective surface brightness, the total luminosity, the average ellipticity and the Fourier coefficient a4 of the isophotes, and, the exponent m of the r1/m law which parametrizes the shape of the light profiles. On the other hand, the kinematics of the galaxies affect both relations producing residuals that correlate with the maximum rotation velocity Vmax and the (V/σ) ratio.Once confirmed by future more accurate observations, this effect would introduce a sistematic bias in the distance determination of the clusters; a problem difficult to manage if the internal kinematics of the cluster members is unknown.

scholarly journals Evolution of the Fundamental Plane for early–type galaxies up to z = 1.2

2012 ◽  
Vol 8 (S295) ◽  
pp. 175-175
Author(s):  
M. Fernández Lorenzo ◽  
J. Cepa ◽  
A. Bongiovanni ◽  
A. M. Pérez García ◽  
A. Ederoclite ◽  
...  
Keyword(s):  
High Redshift ◽  
Compact Objects ◽  
Early Type ◽  
Fundamental Plane ◽  
Two Samples ◽  
Minor Mergers

AbstractWe studied the evolution of the Fundamental Plane in B– and g–bands, for two samples of early–type galaxies at 0.2 < z < 0.35 and 0.35 < z < 1.2. We found a difference in the intercept that can be interpreted as galaxies at < z > ~0.7 being 0.68 and 0.52 mag brighter in the B– and g–band respectively, than their local counterparts. From the study of the Kormendy relation, we found the existence of a population of very bright (−21.5 > Mg > −22.5) and compact (Re < 2 kpc) galaxies of which only a small fraction of 0.4% exists at z = 0, and that would be responsible for the apparent evolution in the Kormendy relation (Fernández Lorenzo et al. 2011). These compact objects would have evolved mainly in size by the action of “dry” minor mergers.We checked the effect of these bright and compact objects in the FP by comparing the galaxies with −21.5 > Mg > −22.5 of our high–redshift sample and the SDSS early–type galaxies of Bernardi et al. (2003) in Fig. 1. The previous evolution found in the FP seems to be caused mainly by these galaxies, which have virtually disappeared at z = 0.

scholarly journals KMOS Clusters and VIRIAL GTO Surveys

2014 ◽  
Vol 10 (S309) ◽  
pp. 293-294
Author(s):  
D. Wilman ◽  
R. Bender ◽  
R. L. Davies ◽  
J. T. Mendel ◽  
J. Chan ◽  
...  
Keyword(s):  
Near Infrared ◽  
Early Type ◽  
Dynamical Mass ◽  
Fundamental Plane ◽  
Cluster Galaxies ◽  
Medium Resolution ◽  
Stellar Velocity ◽  
Time Observation ◽  
Field Unit ◽  
First Time

AbstractWe present the KMOS (K-band Multi-Object Spectrograph) Cluster and VIRIAL (VLT IRIFU Absorption Line) Guaranteed Time Observation (GTO) programs. KMOS provides 24 arms each feeding an integral field unit (14×14 spaxels of 0.2″ pixels) for IZ, YJ, H and K band near infrared (NIR) medium resolution spectroscopy (R ∼ 3500). Targets are selected from a 7.2′ diameter patrol field. Ultra-deep spectroscopy of ∼ 80 early-type cluster galaxies (∼ 20hr on source) and ∼ 200 (∼ 10hr on source) early-type field galaxies at 1 < z < 2 will dramatically improve the situation at z > 1 for which measurements of stellar velocity dispersions and absorption indices are limited to a few, often relatively young passively evolving galaxies (e.g. Bezanson 2013). In ESO Periods P92 and P93, 15 nights worth of data has been collected for KMOS-Clusters and 6 nights for VIRIAL: this will be supplemented with more data in upcoming semesters. All galaxies have multiband HST imaging including existing or upcoming WFC3 IR imaging, providing stellar mass maps and sizes. Combined with our dispersion measurements, this will allow us to examine the fundamental plane and the dynamical mass of a large sample of z > 1 galaxies for the first time, for both cluster and field galaxies.

scholarly journals Features of Fundamental Plane for Early-Type Galaxies by Clausius' Virial theory

2006 ◽  
Vol 2 (S235) ◽  
pp. 134-134
Author(s):  
L. Secco
Keyword(s):  
Order Approximation ◽  
Early Type ◽  
Density Profiles ◽  
Fundamental Plane ◽  
First Order ◽  
Thermodynamical Properties ◽  
Cosmological Scenario ◽  
Stellar Component ◽  
First Order Approximation ◽  
Good Agreement

AbstractThe theory of the Fundamental Plane (FP) proposed by Secco (2005) is based on the existence of a maximum in the Clausius' Virial (CV) potential energy of a stellar component when it is completely embedded inside a dark matter (DM) halo. At the first order approximation the theory was developed by modeling the two-components with two power-law density profiles and it produces some expectations in fairly good agreement with the observations. We add other predictions of the theory at the same level of approximation about the Zone of Exclusion (ZOE) in k-space and its possible relationship with cosmological scenario. Some of the consequences of the thermodynamical properties of CV maximum are also taken into account.

scholarly journals Early-Type Galaxies in the Sloan Digital Sky Survey. III. The Fundamental Plane

2003 ◽  
Vol 125 (4) ◽  
pp. 1866-1881 ◽  
Author(s):  
Mariangela Bernardi ◽  
Ravi K. Sheth ◽  
James Annis ◽  
Scott Burles ◽  
Daniel J. Eisenstein ◽  
...  
Keyword(s):  
Sloan Digital Sky Survey ◽  
Early Type ◽  
Fundamental Plane ◽  
Sky Survey
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