I was co-Investigator on a number of HST proposals to observe strong gravitational lenses detected in SDSS-III (SLACS) and SDSS-IV (BELLS), which led to a number of publications. There are significant challenges remaining in the data analysis in order to dissect these galaxies in luminous and dark components, and there are new candidates from SDSS-IV (SILO) that are ideal for followup HST imaging.

HST Approved Programs

Cycle 23	10/2015 – 12/2017	HST-GO-14189 Quantifying Cold Dark Matter Substructure with a Qualitatively New Gravitational Lens Sample.
Cycle 20	01/2012 – 12/2016	HST-AR-12833 The Master Lens Database and The Orphan Lenses Project.
Cycle 18	10/2010 – 12/2012	HST-SNAP-12210 SLACS for the Masses: Extending Strong Lensing to Lower Masses and Smaller Radii.
Cycle 18	10/2010 – 12/2012	HST-GO-12209 A Strong Lensing Measurement of the Evolution of Mass Structure in Giant Elliptical Galaxies.

BELLS Publications

ApJ (2012 ) 744 41  168 Citations	The BOSS Emission-Line Lens Survey (BELLS). I. A Large Spectroscopically Selected Sample of Lens Galaxies at Redshift ~0.5
ApJ (2012 ) 757 82  161 Citations	The BOSS Emission-Line Lens Survey. II. Investigating Mass-density Profile Evolution in the SLACS+BELLS Strong Gravitational Lens Sample
ApJ (2016 ) 824 86  73 Citations	The BOSS Emission-line Lens Survey. III. Strong Lensing of Lyα Emitters by Individual Galaxies
ApJ (2016 ) 833 264  90 Citations	The BOSS Emission-line Lens Survey. IV. Smooth Lens Models for the BELLS GALLERY Sample
ApJL (2017 ) 834 L18  17 Citations	Discovery of a Very Bright and Intrinsically Very Luminous, Strongly Lensed Lyα Emitting Galaxy at z = 2.82 in the BOSS Emission-Line Lens Survey
ApJ (2018 ) 853 148  26 Citations	The BOSS Emission-line Lens Survey. V. Morphology and Substructure of Lensed Lyα Emitters at Redshift Z ≈ 2.5 in the BELLS GALLERY
MNRAS (2020 ) 492 1257  21 Citations	Rest-frame UV properties of luminous strong gravitationally lensed Lyα emitters from the BELLS GALLERY Survey