University of Birmingham > Talks@bham > Astrophysics Seminars > The KMOS Redshift One Spectroscopic Survey (KROSS): The resolved Dynamics, Star-Formation and Chemical Properties of 1000 z~1 star forming galaxies

The KMOS Redshift One Spectroscopic Survey (KROSS): The resolved Dynamics, Star-Formation and Chemical Properties of 1000 z~1 star forming galaxies

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  • UserJohn Stott (University of Oxford)
  • ClockWednesday 21 October 2015, 14:30-15:30
  • HousePhysics West 117.

If you have a question about this talk, please contact Sean McGee.

I will present the first results of KROSS , a major UK-led KMOS GTO survey to observe the redshifted H-alpha emission in ~1000 star-forming galaxies at z=0.8-1.5. Selecting galaxies from the star-forming “main-sequence” (stellar masses 1e9.5-1e11.5 Msol and SFR 1 -30 Msol/yr), KROSS will measure the resolved dynamics, chemistry and star formation in a statistical sample of galaxies in to address: (i) How does the fraction of disks evolve as a function of z and environment? (ii) are major (and minor) mergers more prevalent at high-z ? (iii) How does the relation between the star-formation, stellar mass and dark halo evolve with z and environment? (iv) How does the angular momentum of galaxy disks evolve with z, stellar mass and environment; (iv) Are chemical abundance gradients of early disks stronger or weaker than local spirals? These are critical issues for developing models of galaxy formation, in particular to determine if stellar mass assembly is dominated by secular isolation or via merger-induced growth. In this talk I will show the first 500+ galaxies from the sample, which already constitutes the largest ever resolved H-alpha survey at this redshift.

This talk is part of the Astrophysics Seminars series.

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