Menu
  • NAM2017
    • Timetable
    • Delegates
    • Registration
  • Science
    • Parallel sessions
    • Plenary talks
    • Posters
    • Publishing workshop
    • Media workshop
    • Community forum
    • Special lunches
    • Hack day
  • Social
    • Welcome reception
    • Conference dinner
    • Football + BBQ evening
  • Outreach
    • Public talk
    • Outreach day
    • Media
  • Hull
    • Travel
    • Accommodation
    • Going out
    • Childcare
  • Contacts
  • NAM2017
    • Timetable
    • Delegates
    • Registration
  • Science
    • Parallel sessions
    • Plenary talks
    • Posters
    • Publishing workshop
    • Media workshop
    • Community forum
    • Special lunches
    • Hack day
  • Social
    • Welcome reception
    • Conference dinner
    • Football + BBQ evening
  • Outreach
    • Public talk
    • Outreach day
    • Media
  • Hull
    • Travel
    • Accommodation
    • Going out
    • Childcare
  • Contacts

Schedule by Session

Abstract
id
Modern Morphologies: 10 Years of Galaxy Zoo
The Green Valley: A Red Herring or a Red Transition?
Date Submitted
Lee Kelvin
Malcolm Bremer (Bristol), Steve Phillipps (Bristol)
ARI, Liverpool JMU
What happens to the morphology of a galaxy when it uses up all of its gas? How do galaxies transition from the blue cloud to the red sequence? Should this transition phase be considered distinct and what does this tell us about the role of morphology in galaxy evolution?
I present the results of an exploratory study into the morphologies of galaxies located in, and either side of, the 'green valley'. Using data from the Galaxy And Mass Assembly (GAMA) survey, imaging from the VST Kilo-Degree Survey (KiDS), and harnessing the crowd-sourcing capabilities of the Zooniverse project, we show how various morphological indicators vary as a function of mass and colour for a sample of ~400 M* galaxies in the local Universe. We find that galaxies in transition from blue to red show distinctive structural markers, including a surplus of rings and bars. Not only does this highlight the peculiar nature of galaxies in this regime, but it hints at the dominant mode of blue-red transformation for Milky-Way mass galaxies, namely, a passive transformation linked to the slow inside-out death of star formation.
Schedule
id
Wednesday
date time
09:00 - 10:30
09.15
Abstract

Wilberforce LT-28

RASLogo

© 2023 Royal Astronomical Society

Login