R
Risa H. Wechsler
Researcher at Stanford University
Publications - 572
Citations - 63450
Risa H. Wechsler is an academic researcher from Stanford University. The author has contributed to research in topics: Galaxy & Dark matter. The author has an hindex of 116, co-authored 528 publications receiving 54728 citations. Previous affiliations of Risa H. Wechsler include University of Illinois at Urbana–Champaign & Massachusetts Institute of Technology.
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Journal Article
First SN Discoveries from the Dark Energy Survey
T. M. C. Abbott,F. B. Abdalla,Ixandra Achitouv,E. Ahn,Greg Aldering,S. Allam,David Alonso,Adam Amara,J. Annis,M. Antonik,Alfonso Aragón-Salamanca,Robert Armstrong,Chris Ashall,Jacobo Asorey,David Bacon,Eduardo Balbinot,M. Banerji,Kyle Barbary,Wayne A. Barkhouse,L. Baruah,A. Bauer,Keith Bechtol,Matthew R. Becker,R. Bender,C. Benoist,A. Benoit-Lévy,M. Bernardi,Gary Bernstein,J. P. Bernstein,Rebecca Bernstein,E. Bertin,Emma Beynon,S. Bhattacharya,T. Biesiadzinski,Rahul Biswas,C. Blake,J. S. Bloom,Sebastian Bocquet,Carlos H. Brandt,Sarah Bridle,David J. Brooks,Peter J. Brown,Robert J. Brunner,E. Buckley-Geer,D. L. Burke,A. Burkert,M. T. Busha,J. Campa,H. Campbell,R. Cane,D. Capozzi,John E. Carlstrom,A. Carnero Rosell,Marcella Carollo,M. Carrasco-Kind,J. Carretero,M. Carter,R. Casas,F. J. Castander,Y. Chen,I. Chiu,C. Chue,Joseph Clampitt,L. Clerkin,Joanne Cohn,Matthew Colless,E. Copeland,R. A. Covarrubias,Robert Crittenden,Martin Crocce,Carlos E. Cunha,L. N. da Costa,C. B. D'Andrea,S. Das,R. Das,Tamara M. Davis,S. Deb,Darren L. DePoy,G. Derylo,S. Desai,F. de Simoni,Mark J. Devlin,H. T. Diehl,J. P. Dietrich,Scott Dodelson,P. Doel,Klaus Dolag,George Efstathiou,T. F. Eifler,Brandon M. S. Erickson,Martin Eriksen,Juan Estrada,J. Etherington,August E. Evrard,S. Farrens,A. Fausti Neto,Enrique J. Fernández,Pedro C. Ferreira,D. A. Finley,J. A. Fischer,B. Flaugher,P. Fosalba,Joshua A. Frieman,Cristina Furlanetto,Juan Garcia-Bellido,Enrique Gaztanaga,M. Gelman,D. W. Gerdes,Tommaso Giannantonio,S. Gilhool,M. S. S. Gill,Michael D. Gladders,L. Gladney,Karl Glazebrook,Meghan E. Gray,Daniel Gruen,Robert A. Gruendl,R. R. Gupta,G. Gutierrez,Salman Habib,E. D. Hall,S. M. Hansen,J. Hao,Katrin Heitmann,Jennifer E. Helsby,R. Henderson,C. Hennig,Will High,Michael Hirsch,Kai Hoffmann,K. Holhjem,K. Honscheid,Ole Host,Ben Hoyle,Wayne Hu,E. M. Huff,Dragan Huterer,Bhuvnesh Jain,D. James,Matt J. Jarvis,M. Jarvis,Tesla E. Jeltema,Marvin Johnson,Stephanie Jouvel,T. Kacprzak,I. Karliner,J. Katsaros,Steve Kent,Richard Kessler,A. G. Kim,T. Kim-Vy,L. King,D. Kirk,Christopher S. Kochanek,Michael Kopp,Johannes Koppenhoefer,Eve Kovacs,Elisabeth Krause,Andrey V. Kravtsov,Richard G. Kron,Kyler Kuehn,M. Kuemmel,S. E. Kuhlmann,Andrea Kunder,N. Kuropatkin,J. Kwan,O. Lahav,Boris Leistedt,M. E. Levi,Peter Lewis,Andrew R. Liddle,C. Lidman,S. J. Lilly,Huan Lin,J. Liu,C. Lopez-Arenillas,Wolfgang Lorenzon,Marilena LoVerde,Zhe Ma,Roy Maartens,N. MacCrann,Lucas M. Macri,M. A. G. Maia,Martin Makler,M. Manera,Claudia Maraston,M. March,K. Markovic,J. P. Marriner,Jennifer L. Marshall,S. L. Marshall,P. Martini,P. Marti Sanahuja,Julian A. Mayers,Timothy A. McKay,Richard G. McMahon,Peter Melchior,K. W. Merritt,Alex Merson,C. J. Miller,Ramon Miquel,Joseph J. Mohr,Todd Moore,Michael J. Mortonson,J. Mosher,J. R. Mould,Pia Mukherjee,Eric H. Neilsen,C. Ngeow,Robert C. Nichol,David L. Nidever,B. Nord,Peter Nugent,Ricardo L. C. Ogando,Lyndsay Old,Jamieson Olsen,F. Ostrovski,K. Paech,A. Papadopoulos,C. Papovich,K. Patton,John A. Peacock,Paulo S. Pellegrini,John Peoples,Will J. Percival,Saul Perlmutter,Don Petravick,A. A. Plazas,Rafael Ponce,Gregory B. Poole,A. Pope,A. Refregier,R. Reyes,Paul M. Ricker,Natalie A. Roe,K. Romer,A. Roodman,P. Rooney,A. J. Ross,Barnaby Rowe,E. Rozo,E. S. Rykoff,Cristiano G. Sabiu,R. P. Saglia,M. Sako,Ariel G. Sánchez,Carles Sanchez,E. J. Sanchez,Javier Sánchez,Basilio X. Santiago,A. Saro,V. Scarpine,R. H. Schindler,Brian P. Schmidt,R. Schmitt,Michael Schubnell,Stella Seitz,R. Senger,I. Sevilla,R. G. Sharp,Erin Sheldon,Ravi K. Sheth,Robert Connon Smith,M. Smith,Jan Snigula,Marcelle Soares-Santos,Flavia Sobreira,J. Song,Maayane T. Soumagnac,H. M. Spinka,Albert Stebbins,Christopher Stoughton,E. Suchyta,R. Suhada,Mark Sullivan,F. Sun,N. B. Suntzeff,William J. Sutherland,M. E. C. Swanson,A. Sypniewski,R. Szepietowski,R. Talaga,G. Tarle,E. Tarrant,S. Thaithara Balan,J. J. Thaler,Daniel Thomas,R. C. Thomas,Douglas L. Tucker,S. A. Uddin,S. Ural,Vinu Vikram,L. M. Voigt,Alistair R. Walker,T. Walker,Risa H. Wechsler,D. H. Weinberg,Jochen Weller,W. C. Wester,M. Wetzstein,Martin White,H. Wilcox,D. Wilman,B. Yanny,J. Young,A. Zablocki,Alfredo Zenteno,Yanxi Zhang,J. Zuntz +308 more
Proceedings ArticleDOI
Enabling dark energy survey science analysis with simulations on XSEDE resources
Brandon M. S. Erickson,Raminderjeet Singh,August E. Evrard,Matthew R. Becker,Michael T. Busha,Andrey V. Kravtsov,Suresh Marru,Marlon Pierce,Risa H. Wechsler +8 more
TL;DR: An XSEDE program to produce multiple synthetic sky surveys of galaxies and large-scale cosmic structure in support of science analysis for the Dark Energy Survey is described and science analysis focused on counts of clusters of galaxies is highlighted.
Journal ArticleDOI
The Mean and Scatter of the Velocity Dispersion-Optical Richness Relation for maxBCG Galaxy Clusters
Matthew R. Becker,Timothy A. McKay,Benjamin P. Koester,Risa H. Wechsler,Eduardo Rozo,August E. Evrard,David B. R. Johnston,Erin S. Sheldon,James Annis,Erwin T. Lau,Robert C. Nichol,Christopher J. Miller +11 more
TL;DR: In this paper, the authors measured the mean and scatter in velocity dispersion at fixed richness of BCG-Galaxy velocity correlation function and showed that the scatter is at most 40.5+/-3.5% for small clusters and 14.9+/-9.4% for large clusters.
Journal ArticleDOI
redMaPPer I: Algorithm and SDSS DR8 Catalog
Eli S. Rykoff,Eduardo Rozo,Michael T. Busha,Michael T. Busha,Carlos E. Cunha,Alexis Finoguenov,August E. Evrard,Jiangang Hao,Benjamin P. Koester,Alexie Leauthaud,Brian Nord,Marguerite Pierre,Rachel M. Reddick,Rachel M. Reddick,T. Sadibekova,Erin S. Sheldon,Risa H. Wechsler,Risa H. Wechsler +17 more
TL;DR: RedMaPPer as mentioned in this paper is a new red-sequence cluster finder specifically designed to make optimal use of ongoing and near-future large photometric surveys, which can iteratively self-train the red sequence model based on minimal spectroscopic training sample, an important feature for high redshift surveys.
Posted Content
An Improved Cluster Richness Estimator
Eduardo Rozo,Eli S. Rykoff,Benjamin P. Koester,Timothy A. McKay,Jiangang Hao,August E. Evrard,Risa H. Wechsler,S. M. Hansen,Erin Sheldon,David Johnston,Matthew R. Becker,James Annis,Lindsey Bleem,Ryan Scranton +13 more
TL;DR: In this article, a matched filter richness estimator is proposed to reduce the variance in the L_X-richness relation, which is shown to be more robust to photometric and redshift errors.