Apparent Brightness » Elliptical http://apparentbrightness.net astronomy and stuff Mon, 03 Dec 2007 16:07:54 +0000 http://wordpress.org/?v=2.5.1 en The role of minor mergers in the recent star formation history of early-type galaxies http://apparentbrightness.net/2007/11/12/the-role-of-minor-mergers-in-the-recent-star-formation-history-of-early-type-galaxies/ http://apparentbrightness.net/2007/11/12/the-role-of-minor-mergers-in-the-recent-star-formation-history-of-early-type-galaxies/#comments Mon, 12 Nov 2007 12:14:02 +0000 Thomas Marquart http://apparentbrightness.net/2007/11/12/the-role-of-minor-mergers-in-the-recent-star-formation-history-of-early-type-galaxies/
  • Kaviraj et al.
  • http://arxiv.org/abs/0711.1493
  • Simulations on how minor mergers can explain the variation in UV-fluxes of ellipticals.
  • They say they cannot “rule out” gas accretion, but I wonder where the dividing line goes between a gas-rich dwarf being eaten and infall of gas.
    • ]]>     http://apparentbrightness.net/2007/11/12/the-role-of-minor-mergers-in-the-recent-star-formation-history-of-early-type-galaxies/feed/     Cosmological parameters from strong gravitational lensing and stellar dynamics in elliptical galaxies http://apparentbrightness.net/2007/11/07/cosmological-parameters-from-strong-gravitational-lensing-and-stellar-dynamics-in-elliptical-galaxies/ http://apparentbrightness.net/2007/11/07/cosmological-parameters-from-strong-gravitational-lensing-and-stellar-dynamics-in-elliptical-galaxies/#comments Wed, 07 Nov 2007 10:03:56 +0000 Thomas Marquart http://apparentbrightness.net/2007/11/07/cosmological-parameters-from-strong-gravitational-lensing-and-stellar-dynamics-in-elliptical-galaxies/
  • Grillo et al.
  • http://arxiv.org/abs/0711.0882
  • Combining gravitational lensing and galaxy dynamics (velocity dispersion as a funciton of radius in ellipticals) as a new and independant (!) method of measuring the geometry of the universe.
  • Way cool, if it ever gets on par in accuracy with the other methods.
    • ]]>     http://apparentbrightness.net/2007/11/07/cosmological-parameters-from-strong-gravitational-lensing-and-stellar-dynamics-in-elliptical-galaxies/feed/     A Population of Massive and Evolved Galaxies at z >5 http://apparentbrightness.net/2007/10/31/a-population-of-massive-and-evolved-galaxies-at-z-5/ http://apparentbrightness.net/2007/10/31/a-population-of-massive-and-evolved-galaxies-at-z-5/#comments Wed, 31 Oct 2007 14:00:19 +0000 Thomas Marquart http://apparentbrightness.net/2007/10/31/a-population-of-massive-and-evolved-galaxies-at-z-5/ 9 ]]>
  • Wiklind et al.
  • http://arxiv.org/abs/0710.0406
  • early red and dead galaxies that formed their stars at z >9
    • ]]>     http://apparentbrightness.net/2007/10/31/a-population-of-massive-and-evolved-galaxies-at-z-5/feed/