Statistics – Methodology
Scientific paper
Jul 2009
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2009hst..prop12292t&link_type=abstract
HST Proposal ID #12292. Cycle 18
Statistics
Methodology
Scientific paper
The formation of realistic disk galaxies within the LCDM cosmology is still largely an unsolved problem. Theory is now beginning to make predictions for how dark matter halos respond to galaxy formation, and for the properties of disk galaxies. Measuring the density profiles of dark matter halos on galaxy scales is therefore a strong test for the standard paradigm of galaxy formation, offering great potential for discovery. However, the degeneracy between the stellar and dark matter contributions to galaxy rotation curves remains a major obstacle. Strong gravitational lensing, when combined with spatially resolved kinematics and stellar population models, can solve this long-standing problem. Unfortunately, this joint methodology could not be exploited until recently due to the paucity of known edge-on spiral lenses. We have developed and demonstrated an efficient technique to find exactly these systems. During supplemental cycle-16 we discovered five new spiral lens galaxies, suitable for rotation curve measurements. We propose multi-color HST imaging of 16 candidates and 2 partially-imaged confirmed systems, to measure a sample of eight new edge-on spiral lenses. This program will at least double the number of known disk-dominated systems. This is crucial for constraining the relative contribution of the disk, bulge and dark halo to the total density profile.;
No associations
LandOfFree
SWELLS: doubling the number of disk-dominated edge-on spiral lens galaxies does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with SWELLS: doubling the number of disk-dominated edge-on spiral lens galaxies, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and SWELLS: doubling the number of disk-dominated edge-on spiral lens galaxies will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-1786088