Constraining strong lensing models with dynamics

Authors
Dr.
Tomás Verdugo
Centro de Investigaciones de Astronomía
Date and time
7 Mar 2012 - 23:00 Europe/London
Address

Aula

Talk language
English
Slides language
English
Serie number
1
Description

Galaxy groups have an important role in the hierarchical assembly of structures in the Universe. Since galaxy groups are much more massive than galaxy-scale halos and are concentrated enough, they can act as lenses. The study of dark matter profiles can be very successfully using group-scale lenses, being that galaxy groups are quite abundant compared to galaxy clusters, and are easy to model. However, these have the disadvantage of the lack of constraints. In this talk, I will show how is possible to constrain the scale radius of the NFW profile using the velocity dispersion of the galaxy group. In particular I will present the results obtained with SL2SJ 02140-0535, a group which belongs to the Strong Lensing Legacy Survey - ARCS (SARCS) sample compiled from the final T0006 data release of the Canada-France-Hawaii Telescope Legacy Survey (CFHTLS).

Type
Format
Seminar
Gravitational lensing

It may interest you

  • Tracing the Chemical Evolution of Metals in local Star-Forming Galaxies: aperture effects and abundance patterns

    Nebular emission lines are a powerful diagnostic tool for tracing the chemical evolution in star-forming galaxies (SFGs) across cosmic time. Due to their proximity, SGFs are ideal for studying the physical properties, stellar population, and nebular gas in much more detail. The COS Legacy Spectroscopy SurveY (CLASSY) is a treasury survey that

    Dr.
    Karla Z. Arellano-Cordova

    Pleyades

    5 Sep 2023 - 10:30 Europe/London
    Past
    Talk Video
    https://youtu.be/jpvOD2fVm-I
  • The mystery of the galaxy without dark matter

    Using CGMS deep integral field data we have discovered that the massive galaxy NGC 1277 has no dark matter. This is the first time that a galaxy as massive as the Milky Way or more is found to be dark matter deficient. This result is unexpected within the Lambda-CDM cosmological paradigm. We propose several alternatives to explain this intriguing

    Sébastien
    Comerón Limbourg

    Aula

    15 Jun 2023 - 10:30 Europe/London
    Past
    Talk Video
    https://youtu.be/TMctBBbLn9Y
  • The Calar Alto Legacy Integral Field Area Survey: extended data release and spatial resolved properties

    We present the extended data release of the Calar Alto Legacy Integral Field Area (CALIFA) survey (eDR). It comprises science-grade quality data for 895 galaxies obtained with the PMAS/PPak instrument at the 3.5 m telescope at the Calar Alto Observatory along the last 12 years, using the V500 setup (3700-7500Å, 6Å/FWHM) and the CALIFA observing

    Dr.
    Sebastian F. Sanchez Sanchez
    Universidad Nacional Autónoma de México

    Aula

    26 May 2023 - 11:30 Europe/London
    Past
    Talk Video
    https://youtu.be/nBbFGfhVS10