100 citations · 236 across the 4 of their papers we have counts for
4 papers
The Ultraviolet Attenuation Law in Backlit Spiral Galaxies
William C. Keel, Anna M. Manning, Benne W. Holwerda +2
(Abridged) The effective extinction law (attenuation behavior) in galaxies in the emitted ultraviolet is well known only for actively star-forming objects and combines effects of t…
Galaxy Zoo: A Catalog of Overlapping Galaxy Pairs for Dust Studies
William C. Keel, Anna Manning, Benne W. Holwerda +5
Analysis of galaxies with overlapping images offers a direct way to probe the distribution of dust extinction and its effects on the background light. We present a catalog of 1990…
The History and Environment of a Faded Quasar: Hubble Space Telescope observations of Hanny's Voorwerp and IC 2497
William C. Keel, Chris J. Lintott, Kevin Schawinski +6
We present Hubble Space Telescope imaging and spectroscopy for the extended high-ionization cloud known as Hanny's Voorwerp, near the spiral galaxy IC 2497. WFC3 images show comple…
The Sudden Death of the Nearest Quasar
Kevin Schawinski, Daniel A. Evans, Shanil Virani +13
Galaxy formation is significantly modulated by energy output from supermassive black holes at the centers of galaxies which grow in highly efficient luminous quasar phases. The tim…