Galaxies Lunch Schedule 2017-2018

NOTE TIME CHANGE: Spring semester lunch will start at noon on every other Monday.

Date	Topic	Speaker	Speaker
September 25	[Planning]	x	x
October 9	Galaxy Dynamics	Ekta Patel	Kathryn Johnston/Jerry Ostriker
October 23	Galaxy Evolution	Keith Hawkins	Jerry Ostriker
November 6	[Holiday]	x	x
November 13	Milky Way	Wyn Evans	Vasily Belokurov
November 20	Large Scale Structure (LSS)	Tze Goh	Nick Luber
December 4	Ultra-Faint Dwarfs	Andrew Emerick	Mary Putman
December 18	Jellyfish	Stephanie Tonnesen	Jacqueline van Gorkom/Greg Bryan
January 29	Impact of LSS on Galaxy Evolution	Julia Gross	Jacqueline van Gorkom
February 12	Dwarf Galaxy Interactions	Sarah Pearson	*TBD*

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Date	Topic	Speaker	Speaker
February 26	Galaxy Formation	*TBD CCA (Greg Bryan)*	*TBD CCA (Greg Bryan)*
March 12	[Spring Break]	x	x
March 19	*TBD	*TBD	*TBD*
March 26	Milky Way	Melissa Ness	*TBD*
April 9	CGM and Topic/Simulations	Ena Choi	Mark Richardson AMNH
April 23	CGM and Surveys	David Schiminovich	Nicole Melso
May 7	Massive Galaxies/AGN	Jerry Ostriker	Ena Choi

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Future Topic Suggestions:
Milky Way, Local Group, Dynamics, Large Scale Structure, Low/High z, HI, SFR, AGN, CGM, Ly Blobs, Extra-Galactic/JWST, Large Surveys/Linking SFR to DM

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Email julia@… with any suggestions/adjustments.

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01/29/2018 Impact of Large Scale Structure on Galaxy Evolution

Our discussion will be led by Julia Gross and Jacqueline vanGorkom, with the following papers for reference.
Detecting Effects of Filaments on Galaxy Properties in the Sloan Digital Sky Survey III - Chen et al. 2016
​https://arxiv.org/pdf/1509.06376.pdf
COSMOS2015 photometric redshifts probe the impact of filaments on galaxy properties - Laigle et al. 2017
​https://arxiv.org/pdf/1702.08810.pdf
Galaxy evolution in the metric of the Cosmic Web - Kraljic et al. 2017
​https://arxiv.org/pdf/1710.02676.pdf
Evidence for HI replenishment in massive galaxies through gas accretion from the cosmic web - Kleiner et al. 2017
​https://arxiv.org/pdf/1701.03467.pdf
The Effects of Filaments and Tendrils on the HI Content of Galaxies - Odekon et al. 2017
​https://arxiv.org/pdf/1712.05045.pdf

12/18/2017 Jellyfish

Guest speakers Jacqueline van Gorkom, Greg Bryan and Stephanie Tonnesen

12/4/2017 Ultra-Faint Dwarfs

Our discussion on theory/simulations will be led by Andrew Emerick, with the following papers for reference.
CONNECTING THE FIRST GALAXIES WITH ULTRA FAINT DWARFS IN THE LOCAL GROUP: CHEMICAL SIGNATURES OF POPULATION III STARS - Jeon et al. 2017
​https://arxiv.org/pdf/1702.07355.pdf
FIRE in the Field: Simulating the Threshold of Galaxy Formation - Fitts et al. 2017
​https://arxiv.org/pdf/1611.02281.pdf

Our discussion on recent observations will be led by Mary Putman, with the following papers for reference.
THE OBSERVED PROPERTIES OF DWARF GALAXIES IN AND AROUND THE LOCAL GROUP - Mc Connachie 2012
​http://iopscience.iop.org/article/10.1088/0004-6256/144/1/4/pdf
BEASTS OF THE SOUTHERN WILD: DISCOVERY OF NINE ULTRA FAINT SATELLITES IN THE VICINITY OF THE MAGELLANIC CLOUDS - Koposov et al. 2015
​https://arxiv.org/pdf/1503.02079.pdf
STELLAR KINEMATICS AND METALLICITIES IN THE ULTRA-FAINT DWARF GALAXY RETICULUM II - Simon et al. 2015
​https://arxiv.org/pdf/1504.02889.pdf
KINEMATICS AND CHEMISTRY OF RECENTLY DISCOVERED RETICULUM 2 AND HOROLOGIUM 1 DWARF GALAXIES - Koposov et al. 2015
​https://arxiv.org/pdf/1504.07916.pdf

11/20/2017 Large Scale Structure

Guest speakers Tze Goh and Nick Luber

11/13/2017 Milky Way

Guest speakers Wyn Evans and Vasily Belokurov

10/23/2017 Galaxy Evolution

Our discussion on classical theory will be led by Keith Hawkins, with the following papers for reference.
Evidence from the Motions of Old Stars that the Galaxy Collapsed - Eggen, Lynden-Bell and Sandage 1962
​http://articles.adsabs.harvard.edu/cgi-bin/nph-iarticle_query?1962ApJ...136..748E&data_type=PDF_HIGH&whole_paper=YES&type=PRINTER&filetype=.pdf Compositions of Halo Clusters and the Formation of the Galactic Halo - Searle and Zinn 1978
​http://articles.adsabs.harvard.edu/cgi-bin/nph-iarticle_query?1978ApJ...225..357S&data_type=PDF_HIGH&whole_paper=YES&type=PRINTER&filetype=.pdf

Our discussion on latest theory will be led by Jerry Ostriker, with the following paper for reference.
Theoretical Challenges in Galaxy Formation - Naab and Ostriker 2017
​https://arxiv.org/abs/1612.06891

10/09/2017 Galaxy Dynamics

Our speaker is Ekta Patel from the University of Arizona.
"A New Approach for Estimating the Mass of the Milky Way Using the Ensemble of Classical Satellite Galaxies"
High precision proper motions are currently available for approximately 20% of the Milky Way's known satellite galaxies. Often, the 6D phase space information of each satellite is used separately to constrain the mass of the MW. In this talk, I will discuss the Bayesian framework outlined in Patel et al. 2017b to make inferences of the MW's mass using satellite properties such as specific orbital angular momentum, rather than just position and velocity. By extending this framework from one satellite to a population of satellites, we can now form simultaneous MW mass estimates using the Illustris-Dark cosmological simulation that are unbiased by high speed satellites such as Leo I (Patel et al., submitted). Our resulting MW mass estimates reduce the current factor of two uncertainty in the mass range of the MW and show promising signs for improvement as upcoming ground- and space-based observatories obtain proper motions for additional MW satellite galaxies.

Our discussion on timing arguments will be led by Kathryn Johnston/Jerry Ostriker, with the following papers for reference.
What galaxy masses perturb the local cosmic expansion? Peñarrubia and Fattahi 2017
​https://arxiv.org/abs/1609.07147
A timing constraint on the (total) mass of the Large Magellanic Cloud - Peñarrubia et all. 2015
​https://arxiv.org/abs/1507.03594