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Lick Indices in the Thin and Thick Disks of Edge-On Disk Galaxies
Peter Yoachim, Julianne J. Dalcanton
We have measured Lick index equivalent widths to derive luminosity weighted stellar ages and metallicities for thin and thick disk dominated regions of 9 edge-on disk galaxies with…
LSST: from Science Drivers to Reference Design and Anticipated Data Products
Željko Ivezić, Steven M. Kahn, J. Anthony Tyson +310
(Abridged) We describe here the most ambitious survey currently planned in the optical, the Large Synoptic Survey Telescope (LSST). A vast array of science will be enabled by a sin…
Extragalactic Thick Disks: Implications for Early Galaxy Evolution
Julianne J. Dalcanton, Anil Seth, Peter Yoachim
I briefly review the growing evidence that thick stellar disks surround most edge-on disk galaxies. Recent studies show that these extragalactic thick disks have old ages, low meta…
Structural Parameters of Thin and Thick Disks in Edge-On Disk Galaxies
Peter Yoachim, Julianne J. Dalcanton
We analyze the global structure of 34 late-type, edge-on, undisturbed, disk galaxies spanning a wide range of mass. We measure structural parameters for the galaxies using two-dime…
The Formation of Dust Lanes: Implications for Galaxy Evolution
Julianne J. Dalcanton, Peter Yoachim, Rebecca A. Bernstein
We find that disk galaxies show a sharp, mass-dependent transition in the structure of their dusty ISM. Dust lanes are a generic feature of massive disks with V_rot>120km/s, but ar…