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Galaxy Evolution In A Complex Environment: A Multi-Wavelength Study Of HCG 7
(2010-11)
The environment where galaxies are found heavily influences their evolution. Close groupings, like the ones in the cores of galaxy clusters or compact groups, evolve in ways far more dramatic than their isolated counterparts. ...
The HETDEX Pilot Survey. III. The Low Metallicities Of High-Redshift Ly Alpha Galaxies
(2011-03)
We present the results of Keck/NIRSPEC spectroscopic observations of three Ly alpha emitting galaxies (LAEs) at z similar to 2.3 discovered with the HETDEX pilot survey. We detect H alpha, [OIII], and H beta emission from ...
Physical And Morphological Properties Of O II Emitting Galaxies In The HETDEX Pilot Survey
(2015-02)
The Hobby-Eberly Dark Energy Experiment pilot survey identified 284 [O II] lambda 3727 emitting galaxies in a 169 arcmin(2) field of sky in the redshift range 0 < z < 0.57. This line flux limited sample provides a bridge ...
Connecting Transitions In Galaxy Properties To Refueling
(2013-11)
We relate transitions in galaxy structure and gas content to refueling, here defined to include both the external gas accretion and the internal gas processing needed to renew reservoirs for star formation. We analyze two ...
Structure and Formation of Elliptical and Spheroidal Galaxies
(2009-05)
New surface photometry of all known elliptical galaxies in the Virgo cluster is combined with published data to derive composite profiles of brightness, ellipticity, position angle, isophote shape, and color over large ...
Dissipation and Extra Light in Galactic Nuclei. II. "Cusp" Ellipticals
(2009-03)
We study the origin and properties of "extra" or "excess" central light in the surface brightness profiles of cusp or power-law elliptical galaxies. Dissipational mergers give rise to two-component profiles: an outer profile ...
To Stack Or Not To Stack: Spectral Energy Distribution Properties Of Ly Alpha-Emitting Galaxies At Z=2.1
(2014-03)
We use the Cosmic Assembly Near-Infrared Deep Extragalactic Legacy Survey (CANDELS) GOODS-S multi-wavelength catalog to identify counterparts for 20 Ly alpha emitting (LAE) galaxies at z = 2.1. We build several types of ...
Bulge n And B/T In High-Mass Galaxies: Constraints On The Origin Of Bulges In Hierarchical Models
(2009-05)
We use the bulge Sersic index n and bulge-to-total mass ratio (B/T) to explore the fundamental question of how bulges form. We perform two-dimensional bulge-disk-bar decomposition on H-band images of 143 bright, high-mass ...
PHIBSS: Molecular Gas, Extinction, Star Formation, And Kinematics In The Z=1.5 Star-Forming Galaxy Egs13011166
(2013-08)
We report matched resolution imaging spectroscopy of the CO 3-2 line (with the IRAM Plateau de Bure millimeter interferometer) and of the Ha line (with LUCI at the Large Binocular Telescope) in the massive z = 1.53 ...
The Role Of Bulge Formation In The Homogenization Of Stellar Populations At Z Similar To 2 As Revealed By Internal Color Dispersion In CANDELS
(2015-04)
We use data from the Cosmic Assembly Near-infrared Deep Extragalactic Legacy Survey to study how the spatial variation in the stellar populations of galaxies relates to the formation of galaxies at 1.5 < z < 3.5. We use ...