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2013 Galaxy Workshop Participants. Photo: Trudy E. Bell


Welcome to the 2013 Santa Cruz Galaxy Workshop homepage!

Galaxy Workshop, August 12-16, will be held in Oakes College, Room 105. If you will be participating in AGORA, August 17-18, it will be at ISB 102. [View PDF map]

Organizers: Avishai Dekel and Joel Primack.
Click here to visit the 2012 Santa Cruz Galaxy Workshop Website.


Last Name First Name Institution Email
Abel Tom KIPAC
Alexnader Fry UW
Arraki Kenza NMSU
Barber Chris University of Victoria
Barro Guillermo UCO/Lick
Benincasa Samantha McMaster University
Brodie Jean UCSC
Cantalupo Sebastiano UCSC
Ceverino Daniel UAM (Madrid)
Choi Jieun UCSC
Churchill Christopher NMSU
Conroy Charlie UCSC
Courteau Stéphane Queens
DeGraf Colin Hebrew University
Dekel Avishai Hebrew University Jerusalem
Dominguez Alberto UC Riverside
Dutton Aaron Max Planck Institute for Astronomy
Elbaz David CEA Saclay
Elbert Oliver UC Irvine
faber sandra UCSC
Fang Jerome UC Santa Cruz
Faucher-Giguere Claude-Andre UC Berkeley
Forbes Duncan Swinburne
Forbes John UC Santa Cruz
Fumagalli Michele Carnegie/Princeton
Garrison-Kimmel Shea University of California:  Irvine
Genel Shy CfA-Harvard
Genzel Reinhard MPE
Graus Andrew UC Irvine
Gu Meng UCSC
Guedes Javiera ETH Zurich
Guo Yicheng UCO/Lick
Hahn Oliver ETH Zurich
Hassen Yesuf UCSC
Hess Steffen AIP
Hobbs Alexander ETH Zürich
Inoue Shigeki Korea Astronomy and Space Science Institute
Jacob Vander Vliet New Mexico State University
Jennings Zachary UCSC
John Phillips UCI
Kader Justin UCSC
Kannan Rahul MPIA
Klimek Elizabeth New Mexico State University
Koo David UCO/Lick Observatory
Krumholz Mark UCSC
Lau Marie Wingyee UCSC
Li Tony Stanford University
Liu Fengshan UCO/Lick Observatory, UCSC
Lu Yu Stanford
Lu Zhankui University of Massachusetts
Mandelker Nir Hebrew University of Jerusalem
Mao Yao-Yuan Stanford University
Mathews Bill UC Santa Cruz
Maxwell Aaron McMaster University
Mo Houjun University of Massachusetts
Mohammadtaher Safarzadeh
Moody Christopher UCSC
Munshi Ferah University of Washington
Nagamine Kentaro Univ. of Nevada Las Vegas
Oesch Pascal UCSC
Penzo Camilla MPIA
Phillips John UC Irvine
Pillepich Annalisa UCSC
Primack Joel UCSC
Prochaska Xavier UC Santa Cruz
Read Justin University of Surrey
Reddick Rachel
Roediger Joel Queens University
Rocha Miguel UC Irvine
Romanowsky Aaron San Jose State University
Sanchez-Conde Miguel KIPAC/SLAC, Stanford
Shields Gregory University of Texas at Austin
Stewart Kyle California Baptist University
Tacconi Linda MPE
Tal Tomer Santa Cruz
Toloba Elisa UCO/Lick
Trujillo-Gomez Sebastian New Mexico State University
Tweed Dylan Hebrew University of Jerusalem
Villaume Alexa UCSC
Wadsley James McMaster University
Wechsler Risa Stanford
Wheeler Coral UC Irvine
Woo Joanna Hebrew University of Jerusalem
Woodley Kristin UCSC
Yesuf Hassen UC Santa Cruz
Zolotov Adi Hebrew University



Videos: Day 1 Day 2 Day 3 Day 4 Day 5

Slides and Video for each talk will be posted here.

*For the scientific program of the 2nd AGORA Workshop on Aug. 17-18, please visit here

Monday August 12th
Session I: ETGs, hi-z | Chair: Courteau
9:30 - 9:35 (5) Dekel & Primack Opening Remarks
9:35 - 9:40 (5) George Blumenthal (UCSC) Chancellor greetings
9:40 - 10:05 (20) Aaron Romanowsky (SJSU) Dynamics of accretion in galaxy halos
10:05 - 10:25 (16) Kristin Woodley (UCSC) DM in early type galaxies
10:25 - 10:45 (16) Fengshan Liu (UCSC) A massive CD galaxy at z=1.1 and its implications
10:45 - 11:15
11:15 - 11:30 (12) Rachel Reddick (Stanford) Evolution of red cluster galaxies
11:30 - 11:55 (20) Jean Brodie (UCSC) Globular clusters and halo stars as tracers of galaxy assembly
11:55 - 12:15 (16) Pascal Oesch (UCSC) Galaxy buildup at the cosmic dawn: ultradeep HST and Spitzer observations
12:15 - 12:35 (16) Alberto Dominguez (UCR) The Hubble expansion from gamma-ray attenuation
12:35 - 12:50 Discussion
12:50 - 2:10
Session II: Quenching, Galaxy-Halo Connection | Chair: Mo
2:10 - 2:30 (16) Guillermo Barro (UCSC) The progenitors of quiescent galaxies at z~2 from stellar population
2:30 - 2:45 (12) Jerome Fang (UCSC) A Link Between Inner Galaxy Structure and Quenching
2:45 - 3:05 (16) Tomer Tal (UCSC) Satellite galaxy evolution in groups
3:05 - 3:25 (16) Joanna Woo (Hebrew) Dependence of galaxy quenching on halo mass and galaxy structure
3:25 - 3:40 (12) Hassen Yesuf (UCSC) From starburst to quiescence: AGN feedback in post-starburst galaxies
3:40 - 4:10
4:10 - 4:25 (12) John Phillips (UCI) A dichotomy in the quenching of satellite galaxies
4:25 - 4:50 (20) Risa Wechsler (Stanford) Progress & outstanding questions in the galaxy-halo connection
4:50 - 5:15 (20) Anatoly Klypin (NMSU) Halo Abundance matching: accuracy and convergence
5:15 - 5:35 (16) Zhankui Lu (UMass) An empirical model for the star formation history in DM halos
5:35 - 5:50 (12) Steffen Hess (AIP) Cosmic variance: big volume and constrained simulations
6:15 Reception & Banquet In honor of Professor Bill Mathews
Tuesday August 13th
Session III: SFGs, Scaling Relations | Chair: Dutton
9:30 - 9:55 (20) Linda Tacconi (MPE) Molecular Gas scaling relations at z~1-2
9:55 - 10:20 (20) Reinhard Genzel (MPE) Nuclear outflows and morphological quenching in massive z~2 disks
10:20 - 10:40 (16) Yicheng Guo (UCO Lick) Evolution of the fraction of clumpy galaxies
10:40 - 11:10
11:10 - 11:35 (20) David Koo (UCSC) New Illuminating Highlights on Galaxies and AGNs from CANDELS
11:35 - 12:00 (20) David Elbaz (CEA) The dominant mode of galaxy growth from deep Herschel surveys
12:00 - 12:25 (20) Stephane Courteau (Queens) The future of galaxy scaling relations
12:25 - 12:40 (12) Joel Roediger (Queens U) Stellar Masses and Abundance Matching for Virgo Cluster
12:40 - 2:00
Session IV: Disks & Spheroids | Chair: Conroy
2:00 - 2:25 (20) Avishai Dekel (Hebrew U) Violent disk instability: clump evolution and blue nuggets
2:25 - 2:40 (12) Nir Mandelker (Hebrew U) The properties of giant clumps in cosmological simulations
2:40 - 2:55 (12) Chris Moody (UCSC) Disk instability in cosmological simulations with radiative feedback
2:55 - 3:15 (16) Shigeki Inoue (KASSI) Galactic discs forming through clump clusters
3:15 - 3:30 (12) John Forbes (UCSC) Central quenching via shutoff of graviational Instability
3:30 - 4:00
4:00 - 4:20 (16) Yu Lu (Stanford) Formation of disk galaxies
4:20 - 4:45 (20) Kyle Stewart (CA Baptist U) Angular momentum acquisition in galaxy halos
4:45 - 5:05 (16) Shy Genel (Harvard) High-redshift galaxy populations in the Illustris galaxy formation simulation
5:05 - 5:25 (16) Dylan Tweed (Hebrew U) Bulge formation at z=4 to 1
5:25 - 5:45 (16) Javiera Guedes (ETH Zurich) Pseudobulge formation in cosmological simulations
5:45 - 6:00 Discussion
Wednesday August 14th
8/13-17 UCSC is hosting the biennial meeting of the APS Division of Particles and Fields (DPF). Wednesday morning's DPF sessions focus on astrophysics. The Galaxy Workshop's participants are welcome to attend these DPF sessions located in Classroom Unit 2.
8:30 - 9:15 Frank Calaprice (Princeton) Status of searches for dark matter
9:15 - 9:45 Joshua Frieman (Fermilab) Studies of dark energy
9:45 - 10:15 Jim Buckley (Washington U) Results from other areas of the Cosmic Frontier
10:15 - 10:45
10:45 - 11:15 Konstantin Matchev (Florida) Possible dark matter projects
11:15 - 11:45 Scot Dodelson (Fermilab) Particle physics from cosmic surveys
11:45 - 12:15 Angela Olinto (Chicago) Other Cosmic Frontier projects
12:30 - 2:00
Session V: Dark Matter: Halos & Physics, The Local Universe | Chair: Wechsler
2:00 - 2:25 (20) Tom Abel (Stanford) Dark matter fluid dynamics
2:25 - 2:45 (16) Oliver Hahn (Zurich) Collisionless structure formation
2:45 - 3:00 (12) Miguel Rocha (UCI) Self-interacting dark matter
3:00 - 3:15 (12) Oliver Elbert (UCI) Cosmological simulations of dwarf galaxies with self-interacting DM
3:15 - 3:45
3:45 - 4:05 (16) Aaron Dutton (MPIA) Dark halo response in MaGICC simulations
4:05 - 4:20 (12) Camilla Penzo (MPIA) Dark MaGICC: the effect of dark energy on galaxy structures
4:20 - 4:45 (20) Houjun Mo (UMass) Simulating the Local Universe
4:45 - 5:00 (12) Shea Garrison-Kimmel (UCI) Exploring the local volume in simulations: the ELVIS project
5:00 - 5:25 (20) M. Sánchez-Conde (Stanford) Halo concentration and DM annihilation substructure boost
5:25 - 5:45 (20) Bill Mathews (UCSC) Radio-emitting electrons in the Cygnus A cavity
5:45 - 6:00 Discussion
Thursday August 15th
Session VI: IGM, CGM, ISM | Chair: Read
9:30 - 9:55 (20) Xavier Prochaska (UCSC) The transverse proximity effect
9:55 - 10:20 (20) Duncan Forbes (Swinburne) Metallicity maps of galaxies in observations and simulations
10:20 - 10:45 (20) Chris Churchill (NMSU) Evidence that the cool/warm CGM is self-similar with halo mass
10:45 - 11:15
11:15 - 11:35 (16) Sebastiano Cantalupo (UCSC) Illuminating the IGM (Lecture not available)
11:35 - 11:55 (16) Michele Fumagalli (Carnegie) Lyman limit systems and the circumgalactic medium at z~2-3
11:55 - 12:15 (16) Ryan Cooke (UCSC) The most metal-poor Damped Lyman-alpha systems
12:15 - 12:35 (16) Sijing Shen (UCSC) The CGM around galaxies in cosmological simulations
12:35 - 12:50 Discussion
12:50 - 2:10
Session VII: Feedback, Dwarfs | Chair: Koo
2:10 - 2:35 (20) Mark Krumholz (UCSC) Understanding radiation-pressure driven winds
2:35 - 2:50 (12) Ferah Munshi (UW) The pressure of the star forming ISM in cosmological simulations
2:50 - 3:15 (20) Phil Hopkins (Caltech) Cosmological zoom-in simulation using new stellar feedback
3:15 - 3:40 (20) Charlie Conroy (UCSC) Maintaining dead galaxies with stellar heating
3:40 - 4:10
4:10 - 4:25 (12) Coral Wheeler (UCI) Interpreting observations of quenched and star- forming dwarf galaxies
4:25 - 4:45 (16) Elisa Toloba (UCSC) Kinematics and DM halos of dwarf ellipticals in Virgo
4:45 - 5:00 (12) Aaron Maxwell (McMaster) Mechanisms for globular clusters and core formation in dwarfs
5:00 - 5:15 (12) Kenza Arraki (NMSU) Simulating the tidal stripping of satellite galaxies
5:15 - 5:35 Discussion
Friday August 16th
Session VIII: Galaxy Simulations I (Joint with AGORA workshop) | Chair: Krumholz
9:30 - 9:55 (20) Joel Primack (UCSC) The AGORA project - introduction and rationale
9:55 - 10:15 (16) Ji-hoon Kim (UCSC) The AGORA project - initial conditions and the proof-of-concept test
10:15 - 10:35 (16) Adi Zolotov (Hebrew) How to build compact SF spheroids
10:35 - 10:50 (12) Elizabeth Klimek (NMSU) Inflows, outflows and star formation in ART simulations
10:50 - 11:20
11:20 - 11:45 (20) James Wadsley (McMaster) Stellar feedback and galaxy formation
11:45 - 12:05 (16) Jose Oñorbe (UCI) Cosmological simulations of dwarfs and fdbk from massive stars
12:05 - 12:30 (20) Piero Madau (UCSC) The Baryon Cycle of Dwarf Galaxies
12:30 - 12:55 (20) Andreas Burkert (Munich) Planes of satellites in the cold-flow scenario of galaxy formation
12:55 - 2:10
Session IX: Galaxy Simulations II (Joint with AGORA workshop) | Chair: Klypin
2:10 - 2:35 (20) Justin Read (U. Surrey) Galaxy formation with SPHS
2:35 - 2:55 (16) Alexander Hobbs (Zurich) Positive feedback in galaxy formation: connecting small to large scales
2:55 - 3:20 (20) Ken Nagamine (UNLV) H2-based star formation in high-z galaxies and reionization
3:20 - 3:35 (12) Rahul Kannan (MPIA) Galaxy formation with local photoionization feedback
3:35 - 3:50 (12) S. Trujillo-Gomez (NMSU) Galaxy assembly with radiative feedback and local star formation
3:50 - 4:20
4:20 - 4:40 (16) Daniel Ceverino (UAM) Radiative feedback slows high-z low-mass galaxy formation
4:40 - 5:00 (16) Christine Simpson (Columbia) Momentum feedback in dwarf galaxy simulations
5:00 - 5:25 (20) Lucio Mayer (Zurich) Multi-scale simulations of high-z galaxies from cosmology to nuclei
5:25 - 5:45 (16) Annalisa Pillepich (UCSC) Building late-type spirals by ex-situ and in-situ star formation
5:45 - 6:05 (16) Colin DeGraf (Hebrew) Supermassive black hole growth in hydrodynamic simulations
6:05 - 6:10 Closing Remark for Galaxy Workshop | We will have plenty of time for discussion on Saturday and Sunday!

Directions and Transportation

View 2013 Santa Cruz Galaxy Workshop in a larger map

This year's workshop will be held at Oakes College Room 105. Please click here for a Oakes College Map in PDF. This map also includes your Check In and Housing Location.

If you will be participating in AGORA, August 17-18, it will be at ISB 102. [View PDF map]

Directions to University of California Santa Cruz


The cost is $98.25/night and includes linens, parking, breakfast & dinner in a nearby college cafeteria, but no cleaning or janitorial services.

Choosing the on campus housing may be convenient as it will be in close proximity to the Oakes 105 auditorium where the Galaxy Workshop will meet.

Below is a list of local lodging options as well.

Please enter the UCSC campus through the West Entrance and follow the signs toward Oakes College. Our conference will be parking in Lot 162 and at the back of the parking lot there will be a check-in table on Monday morning. If you have paid for parking, you can pick your parking permits up there; if you still need to pay for parking, you will be able to do so there as well. Keep in mind that if you have a car on campus you must have a permit; the officers ticket regularly, even in the summer. Once you have parked, there will be signs to Oakes 105 & Oakes 106 where you can check in.

Airport shuttles
Shuttle services from the airport to campus or to your lodging are available for a fee:

Public transport
Public transportation options to, from, and around Santa Cruz can be done through the Santa Cruz Metro.

Local Lodging Options

The weekday rates at the Mission Inn are $89.95 (tax not included). Please mention you are here for the Galaxy Workshop at UCSC.

If you will be staying an additional week for collaboration, either before or after the workshop, you may want to try the following suggestions for a bit longer term and possibly less expensive housing:

  • Craig's List - Craig's List shows housing for rent in many areas- just select the Santa Cruz locations from the following Monterey Bay Area list


In addition we have a listing from Academic HR, which contains many housing options for extended stays, typically in faculty/UCSC employee houses. This list is available upon request.
For questions about accommodation contact Sue Grasso at ""


UC-HIPACC (University of California High Performance AstroComputing Center) is co-sponsoring the 2013 Galaxy Formation Workshop.

A major goal of UC-HIPACC is to encourage collaboration on computational astrophysics between groups at UC campuses and the affiliated DOE Labs. We are willing to help with lodging support for UC students interested in attending the Galaxy Workshop. If you are interested in UCSC housing support please send an email to Sue Grasso at ""

Other Useful Information

Avishai Dekel (dekel[at]
Joel Primack (joel[at]
Sue Grasso (hipacc[at]


Hello workshop participants,

The Galaxy Workshop is fast approaching! This year's workshop, Monday to Friday, August 12-16, will take place in Oakes College, Room 105, to be followed by the AGORA meeting, August 16-18.

The registration fee this year will be $100, which will cover daily lunches and snacks as well as the banquet on August 12, honoring Bill Mathews. His web page can be found at:

At this time, please register for the workshop using the link:


Information about the workshop, including the program as well as maps and travel information, on this website.

If you have any comment about the program, kindly respond asap.

Any questions regarding registration may be directed to Nancy Moore at and by phone at 831-459-5092, or to Sue Grasso at



This is important!

You will be asked to provide information including specific days of attendance, parking, and meal requests, and you will then be directed to a secure web site to provide payment information (coming soon!). Everyone who wants to attend MUST register to ensure that the proper accommodations are in place.

Please note: The registration fee for this year's Galaxy Workshop will be $100. This fee, along with UC-HiPACC's financial support, will cover the costs of the welcome banquet as well as lunch, morning and afternoon refreshments for five days. The Galaxy Workshop banquet will be Monday night August 12.

2nd AGORA Workshop

Visit the AGORA Project website:

The 2nd Workshop of the AGORA Project will be August 16-19, 2013. On Aug.16 (Fri) the AGORA Workshop and our own Galaxy Workshop will hold joint sessions. If you are interested in participating in the 2nd AGORA Workshop or the Project in general, please visit here