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Star-forming cores embedded in a massive cold clump: Fragmentation, collapse and energetic outflows
Martin Hennemann, Stephan M. Birkmann, Oliver Krause +4
The fate of massive cold clumps, their internal structure and collapse need to be characterised to understand the initial conditions for the formation of high-mass stars, stellar s…
Cosmic transparency: A test with the baryon acoustic feature and type Ia supernovae
Surhud More, Jo Bovy, David W. Hogg
Conservation of the phase-space density of photons plus Lorentz invariance requires that the cosmological luminosity distance be larger than the angular diameter distance by a fact…
The role of luminous substructure in the gravitational lens system MG 2016+112
A. More, J. P. McKean, S. More +3
MG 2016+112 is a quadruply imaged lens system with two complete images A and B and a pair of merging partial images in region C as seen in the radio. The merging images are found t…
Galaxy Clustering & Galaxy-Galaxy Lensing: A Promising Union to Constrain Cosmological Parameters
Marcello Cacciato, Frank C. van den Bosch, Surhud More +3
Galaxy clustering and galaxy-galaxy lensing probe the connection between galaxies and their dark matter haloes in complementary ways. On one hand, the halo occupation statistics in…
Satellite Kinematics II: The Halo Mass-Luminosity Relation of Central Galaxies in SDSS
Surhud More, Frank C. van den Bosch, Marcello Cacciato +3
The kinematics of satellite galaxies reflect the masses of the extended dark matter haloes in which they orbit, and thus shed light on the mass-luminosity relation (MLR) of their c…
Satellite Kinematics I: A New Method to Constrain the Halo Mass-Luminosity Relation of Central Galaxies
Surhud More, Frank C. van den Bosch, Marcello Cacciato
Satellite kinematics can be used to probe the masses of dark matter haloes of central galaxies. In order to measure the kinematics with sufficient signal-to-noise, one uses the sat…
Modeling Galaxy-Galaxy Weak Lensing with SDSS Groups
Ran Li, H. J. Mo, Zuhui Fan +4
We use galaxy groups selected from the Sloan Digital Sky Survey (SDSS) together with mass models for individual groups to study the galaxy-galaxy lensing signals expected from gala…
Towards a Concordant Model of Halo Occupation Statistics
Frank C. van den Bosch, Xiaohu Yang, H. J. Mo +6
We use the conditional luminosity function (CLF) and data from the 2dFGRS to constrain the average relation between light and mass in a LCDM cosmology with Omega_m=0.23 and sigma_8…