Astronomy and Astrophysics – Astronomy
Scientific paper
Jan 2009
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2009aas...21346007c&link_type=abstract
American Astronomical Society, AAS Meeting #213, #460.07; Bulletin of the American Astronomical Society, Vol. 41, p.367
Astronomy and Astrophysics
Astronomy
Scientific paper
LSST will contribute to a wide variety of studies of galaxies, ranging from the Local Group to z>5. As part of the science-planning effort in the LSST Galaxies Collaboration, we explore some of the contributions it will make to studies of groups and clusters of galaxies in the nearby Universe. Co-added images over 10 years will provide multi-band photometry of galaxies down to very low surface-brightness limits both within clusters and in their surrounding environments. This will make it possible to explore in great detail trends of color, size, surface brightness, and morphology with local environment. LSST time-series data will provide an inventory of novae, Cepheids, and long-period variables in the nearest clusters and groups of galaxies -- both within galaxies and in between galaxies. Cepheid variables in late-type galaxies, and surface-brightness fluctuations in early-type galaxies, will provide tests of group membership and help to delineate the three dimensional structure in very nearby groups and surrounding filaments. For more distant groups and clusters, nova rates will provide statistical confirmation of cluster membership for low-surface-brightness galaxies that are much too faint for spectroscopic redshifts.
Armus Lee
Borne Kirk
Closson Ferguson Henry
Dickinson Marc
Gawiser Eric
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