Data Scientist -- Current
Capital One

  • Data scientist in the model risk office. Focused on R&D and model validation.

Data Science Intern -- Summer 2018
Stitch Fix Inc.

  • Modeled time evolution of client and item like-rate on the "Style Shuffle” application using recommender systems designed in PyTorch. Saw a two percentage point increase in model predictive power.

  • Edited and managed production ETLs using PySpark that combined client interaction data across multiple data sources and fed them to our recommender system.

  • Analyzed A/B test results targeting increased client engagement using mixed effects models and SQL queries across over 200 million rows. Presented solution to business partners that is driving a doubling of the per-user engagement.

Research Assistant -- Fall 2013 - Spring 2018
University of Wisconsin - Madison

  • See the research page for more information.


Ph.D., Astronomy – May 2018
M.S., Astronomy - December 2015
University of Wisconsin - Madison
Stebbins Award for significant research achievement.

Bachelor of Arts, Physics with an Astronomy Emphasis – May 2013
Macalester College
Dr. Sherman W. Schultz Memorial Award for academic excellence and outstanding research.


Google Scholar -- ADS

Pardy, S. A.; D'Onghia, E.; Fox, A. ApJ accepted-- Models of Tidally Induced Gas Filaments in the Magellanic Stream

Bustard, C.; Pardy, S. A.; D'Onghia, E.; Zweibel, E. G.; Gallagher, J. S. III. ApJ submitted-- The Fate of Supernova-Heated Gas in Star-Forming Regions of the LMC: Lessons for Galaxy Formation?

Bridge, J.~S.; Hayes, M.; Melinder, J.; Östlin, G.; Gronwall, C.; Ciardullo, R.; Atek, H.; Cannon, J. M.; Gronke, M.; Guaita, L.; Hagen, A.; Herenz, E. C.; Kunth, D.; Laursen, P.; Mas-Hesse, J. M.; Pardy, S. A.; ApJ accepted -- The Lyman Alpha Reference Sample. VIII. Characterizing Lyman-Alpha Scattering in Nearby Galaxies

Chen, B.; D'Onghia, E.; Pardy, S.; Pasquali, A.; Motta, C. B.; Hanlon, B.; Grebel, E. K. ApJ submitted -- Chemo-Dynamical Clustering applied to APOGEE data: Re-Discovering Globular Clusters

Pardy, S. A.; Cannon, J.M.; Östlin, G.; Hayes, M.; Bergvall, N. AJ, 152, 178 -- Detection of HI in Emission in the Lyman Alpha Emitting Galaxy Haro 11

Pardy, S. A.; D'onghia, E.; Athanassoula, E.; Wilcots, E. M.; Sheth, K., 2016 ApJ, 827, 149 -- Tidally-Induced Offset Disks in Magellanic Spiral Galaxies

Herenz, E.C.; Gruyters, P.; Orlitova, I.; Hayes, M.; Östlin, G.; Cannon, J. M.; Roth, M. M.; Bik, A.; Pardy, S.; Otí-Floranes, H.; Mas-Hesse, J. M.; Adamo A., Atek, H.; Duval, F.; Guaita, L.; Kunth, D.; Laursen, P.; Melinder, J.; Puschnig, J.; Rivera-Thorsen, T. E.; Schaerer, D.; Verhamme, A., 2016 A&A, 587A, 78 -- The Lyman alpha reference sample. VII. Spatially resolved Hα kinematics

de Swardt, B.; Sheth, K; Kim, T.; Pardy, S., D'Onghia, E.; Wilcots, E.; Hinz, J; Munõz-Mateos, J.-C.; Regan, M. W.; Athanassoula, E.; Bosma, A.; Buta, R. J.; Comerón, S.; Gadotti, D. A.; de Paz, A. G.; Jarrett, T. H.; Elmegreen, D. M.; Elmegreen, B. G.; Knapen, J. H.; Laine, J.; Laurikainen, E.; Ho, L. C.; Madore, B. F.; Meidt, S.; Menéndez-Delmestre, K.; Peng, C. Y.; Salo, H.; Schinnerer, E.; Zaritsky, D., 2015 ApJ, 808, 90 -- The Off-center Bar in the Late-type Galaxy NGC 3906

Guaita, L.; Melinder, J.; Hayes, M.; Östlin, G.; Gonzalez, J. E.; Micheva, G.; Adamo, A.; Mas-Hesse, J. M.; Sandberg, A.; Otí-Floranes, H.; Schaerer, D.; Verhamme, A.; Freeland, E.; Orlitová, I.; Laursen, P.; Cannon, J. M.; Duval, F.; Rivera-Thorsen, T.; Herenz, E. C.; Kunth, D.; Atek, H.; Puschnig, J.; Gruyters, P.; Pardy, S. A., A&A, 576, A51 -- The Lyman alpha reference sample: IV. Morphology at low and high redshift

Östlin, G.; Hayes, M.; Duval, F.; Sandberg, A.; Rivera-Thorsen, T.; Marquart, T.; Orlitova, I.; Adamo, A.; Melinder, J.; Guaita, L,; Atek, H.; Cannon, J. M.; Gruyters, P.; Herenz, E. C.; Kunth, D.; Laursen, P.; Mas-Hesse, J. M.; Micheva, G.; Pardy, S. A.; Oti-Floranes, H. ; Roth, M. M.; Schaerer, D.; Verhamme, A. 2014 ApJ, 797, 11 -- The Lyman-alpha Reference Sample: I. Survey outline and first results for Markarian 259

Pardy, S. A.; Cannon, J. M.; Östlin, G.; Hayes, M.; Rivera-Thorsen, T.; Sandberg, A.; Adamo, A.; Freeland, E.; Christian Herenz; E., Guaita, L.; Kunth, D.; Laursen, P.; Mas-Hesse, J. M.; Melinder, J.; Orlitova, I.; Oti-Floranes, H.; Puschnig, J.; Schaerer, D.; Verhamme, A., 2014 ApJ, 794, 101 -- The Lyman Alpha Reference Sample: III. Properties of the Neutral ISM from GBT and VLA Observations

Bernstein-Cooper, E. Z., Cannon, J. M., Elson, E. C.,Warren, S.R., Chengalur, J., Skillman, E.D., Adams, E. A. K., Bolatto, A.B., Giovanelli, R., Haynes, M. P., McQuinn, K.B.W., Pardy, S.A, Rhode, K. L., Salzer, J.J., 2014, AJ, 148, 35 -- ALFALFA Discovery of the Nearby Gas-rich Dwarf Galaxy Leo P. V. Neutral Gas Dynamics and Kinematics

Hayes, M.; Östlin, G.; Duval, F.; Sandberg, A; Guaita, L; Melinder, J; Adamo, A; Schaerer, D; Verhamme, A; Orlitov‡, I; Mas-Hesse, J. M; Cannon, J. M.; Atek, H.; Kunth, D.; Laursen, P.; Ot’-Floranes, H.; Pardy, S.; Rivera-Thorsen, T.; Herenz, E. C.; 2014, ApJ, 782, 6 -- The Lyman alpha Reference Sample: II. HST imaging results, integrated properties and trends

Cannon, J. M.; Bernstein-Cooper, E. Z.; Cave, I. M.; Harris, J. B.; Marshall, M. V.; Moen, J. M.; Moody, S. J.; O'Leary, E. M.; Pardy, S. A.; Thomann, C. M.; 2012, AJ, 144, 82 -- The Neutral Gas Dynamics of the Nearby Magellanic Irregular Galaxy UGCA 105


ISIMA Summer Student -- Summer 2014
International Summer Institute for Modeling in Astrophysics - CITA, Toronto

  • Used restricted 3-Body models and Markov Chain Monte Carlo techniques to study the tidal stream of NGC 5466 and the dark matter potential of the Milky Way.

REU Summer Student -- Summer 2012
National Radio Astronomy Observatory, Charlottesville, VA

  • Wrote and edited code to analyze CO emission data from M51.

  • This research won the Chambliss Astronomy Achievement Student Award at the 221 AAS meeting.

Research Assistant -- Summer 2011
Physics and Astronomy Department, Macalester College, St. Paul, MN

  • Reduced GBT data for LARS - a study of nearby galaxies comparing Lyman Alpha emissions to various properties including HI mass.


Teaching Assistant -- Spring 2014, Fall 2016, Fall 2017
University of Wisconsin - Madison

  • Designed course material and taught discussion sections

Astronomy Preceptor -- Fall 2012
Macalester College, St. Paul, MN

  • Teaching assistant and telescope operator for introductory astronomy lab.

Service and Outreach

  • Referee - Monthly Notices of the Royal Astronomical Society

  • Webmaster and LOC member for The Role of Gas in Galaxies - international conference with 130+ attendees.

  • Televised lecture at UW-Madison Space Place

  • Department service: Graduate student Chair - 2016, Prospective graduate student organizer - 2014, 2015, 2017

  • Public talks and observing at state parks through the Universe in the Park program

  • Telescope operator for public observing at Washburn Observatory and Macalester College

Students Mentored:

  • William Tyndall - 2014 - 2016

  • Boquan Chen - 2014 - 2018