Links
- Resume
- Github
- LinkedIn
- See my LinkedIn profile for an extended version of my resume.
- Author Search
- SAO/NASA ADS results for my academic publications.
- Insight Project
- Fun with Merging Clusters of Galaxies
- A little research demo I made using an Ipython notebook and Javascript plugin (follow instructions for interactive plots)
Research
Intro
In 2003, The Hubble Space Telescope observed a dark patch of sky the size of a grain of sand. The image revealed over 10,000 galaxies. Each galaxy had a unique color, shape and size, for reasons we do not yet understand. Galaxy evolution occurs over billions of years, across the largest distance scales in the universe. Objects known as clusters of galaxies provide excellent laboratories to test competing theories, as they contain high concentrations and diverse populations of galaxies. We take this ideal sample a step further by examining a system in which two clusters have collided, catalyzing the processes its galaxies undergo in a lifetime.
You can check out the intro to my dissertation pages 1-4 for a more advanced version (these are included in the free preview on ProQuest) by clicking the link under publications. For an even more advanced version check out my papers, also below.
Demo: Fun with Merging Clusters of Galaxies
(A little research demo I made using an Ipython notebook and Javascript plugin)
What does an observational cosmologist do?
Presentation at WOC Conference (2015)
Publications
- Mansheim, A. S.,
B. C. Lemaux, A. R. Tomczak, L. M. Lubin, N. Rumbaugh, P.-F. Wu, R. R. Gal, L. Shen, W. A. Dawson, G. K. Squires.
Suppressed Star Formation by a Merging Cluster System.
Monthly Notices of the Royal Astronomical Society: Letters, Volume 469, Issue 1, p.L20-L25 (2017).
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Mansheim, A. S.,
B. C. Lemaux, W. A. Dawson, L. M. Lubin, D. Wittman, S. Schmidt.
Star Formation in the Cluster Merger DLSCL J0916.2+2953.
The Astrophysical Journal, Volume 834, Issue 2, article id. 205, 21 pp. (2017).
- Mansheim, A. S.,
Star Formation in Merging Clusters of Galaxies
.
ProQuest Dissertations And Theses; Thesis (Ph.D.)--University of California, Davis, 2016.; Publication Number: AAT 10246800; ISBN: 9781369616767; Source: Dissertation Abstracts International, Volume: 78-08(E), Section: B.; 111 p.
Codes
- Thesis
- Some Jupyter notebooks I wrote for some of the analysis for my second paper, where we discovered suppressed star formation in galaxies between two merging clusters at redshift ~1.
- Snippets
- Code sample using mplD3 to make useful diagrams so you can rollover a point on a plot to see other features of that object stored in the dataframe (in my case, a galaxy on a color-magnitude plot). I also included a point-in-poly function I wrote that can be used to take an arbitrary number of N sided polygons (directly from DS9 contour file) and classify whether points in a data set are inside or outside of the shape. Outputs Pandas Groupby pickle that can be applied to do many things, as seen in my Jupyter notebooks and cluster_funct file of functions.
Fun
Where am I? (Update: Instagram currently in private mode)
