Zobrazeno 1 - 9
of 9
pro vyhledávání: '"Hansen, Sarah M."'
Autor:
Rozo, Eduardo, Wechsler, Risa H., Rykoff, Eli S., Annis, James T., Becker, Matthew R., Evrard, August E., Frieman, Joshua A., Hansen, Sarah M., Hao, Jiangang, Johnston, David E., Koester, Benjamin P., McKay, Timothy A., Sheldon, Erin S., Weinberg, David H.
Publikováno v:
Astrophys.J.708:645-660,2010
We use the abundance and weak lensing mass measurements of the SDSS maxBCG cluster catalog to simultaneously constrain cosmology and the richness--mass relation of the clusters. Assuming a flat \LambdaCDM cosmology, we find \sigma_8(\Omega_m/0.25)^{0
Externí odkaz:
http://arxiv.org/abs/0902.3702
Publikováno v:
Astrophys.J.699:1333-1353,2009
Imaging data from the Sloan Digital Sky Survey are used to characterize the population of galaxies in groups and clusters detected with the MaxBCG algorithm. We investigate the dependence of Brightest Cluster Galaxy (BCG) luminosity, and the distribu
Externí odkaz:
http://arxiv.org/abs/0710.3780
Autor:
Sheldon, Erin S., Johnston, David E., Masjedi, Morad, McKay, Timothy A., Blanton, Michael R., Scranton, Ryan, Wechsler, Risa H., Koester, Ben P., Hansen, Sarah M., Frieman, Joshua A., Annis, James
Publikováno v:
Astrophys.J.703:2232-2248,2009
We present measurements of the excess mass-to-light ratio measured aroundMaxBCG galaxy clusters observed in the SDSS. This red sequence cluster sample includes objects from small groups with masses ranging from ~5x10^{12} to ~10^{15} M_{sun}/h. Using
Externí odkaz:
http://arxiv.org/abs/0709.1162
Autor:
Hansen, Sarah M., McKay, Timothy A., Wechsler, Risa H., Annis, James, Sheldon, Erin Scott, Kimball, Amy
Publikováno v:
Astrophys.J.633:122-137,2005
Imaging data from the Sloan Digital Sky Survey is used to measure the empirical size-richness relation for a large sample of galaxy clusters. Using population subtraction methods, we determine the radius at which the cluster galaxy number density is
Externí odkaz:
http://arxiv.org/abs/astro-ph/0410467
Autor:
Sheldon, Erin S., Johnston, David E., Masjedi, Morad, McKay, Timothy A., Blanton, Michael R., Scranton, Ryan, Wechsler, Risa H., Koester, Ben P., Hansen, Sarah M., Frieman, Joshua A., Annis, James
Publikováno v:
The Astrophysical Journal. 703:2232-2248
We present measurements of the excess mass-to-light ratio measured aroundMaxBCG galaxy clusters observed in the SDSS. This red sequence cluster sample includes objects from small groups with masses ranging from ~5x10^{12} to ~10^{15} M_{sun}/h. Using
Autor:
Hansen, Sarah M.
Publikováno v:
In Alzheimer's & Dementia: The Journal of the Alzheimer's Association July 2017 13(7) Supplement:P1411-P1411
Akademický článek
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Akademický článek
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Autor:
Hansen, Sarah M., McKay, Timothy A., Wechsler, Risa H., Annis, James, Scott, Erin, Kimball, Amy
Publikováno v:
The Astrophysical Journal; November 2005, Vol. 633 Issue: 1 p122-137, 16p