the modules for experiments in stellar astrophysics (mesa
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The Modules for Experiments in Stellar Astrophysics (MESA)Project
Frank Timmes School of Earth and Space Exploration
Arizona State University
Open Digital Infrastructure KITP 05jun2019
The MESA source code is a set of software modules for stellar astrophysics that can be used on their own, or combined to solve the coupled equations governing 1D stellar evolution with an implicit finite volume scheme.
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“Mother of All Demos”December 8, 1968
“The 90-minute presentation demonstrated almost all the fundamental elements of modern personal computing: windows, hypertext, graphics, efficient navigation and command input, video conferencing, the computer mouse, word processing, dynamic file linking, revision control, and a collaborative real-time editor.”
Doug Engelbart Bill Paxton
After a PhD in computer science at Stanford
and a stint at Xerox Palo Alto Research Center,
Bill became one of Adobe’s creators in 1983.
Bill helped invent scalable font technology.
The public facing part of this invention was
Postscript, which evolved into today’s PDF.
Bill retired from Adobe in 1990.
“Hello, my name is Bill Paxton. My I please use the tools posted on your website?”
January 8, 2005
Bill is MESA’s First Author and
a Senior Fellow in Computational Astrophysics at the KITP.
In 2010 MESA as an instrument was ready for release.
Time was spent planning for MESA’s possible future …
In 2010 stellar evolution software instruments were usually
closed source, closed knowledge, secret handshake, and
concentrated in ~10 locations around the world.
Yet, stellar astronomy was (and still is) booming with
new telescopes, missions, puzzles, and science.
There was a large pent-up demand for new stellar models.
Recognizing Opportunity
APPENDIX A
MANIFESTO
MESA was developed through the concerted efforts of thelead author over a six year period with the engagement anddeep involvement of many theoretical and computational astro-physicists. The public availability of MESA will serve education,scientific research, and outreach. This appendix describes thescientific motivation for MESA, the philosophy and rules of usefor MESA, and the path forward on stewardship of MESA, andadvanced development of future research and education tools.We make MESA openly available with the hope that it will growinto a community resource. We therefore consider it importantto explain the guiding principles for using and contributing toMESA. Our goal is to assure the greatest usefulness for thelargest number of research and educational projects.
Paxton et al, ApJS, 193, 3, 2011
South
PacificOcean
South
Atlantic
Ocean
North
Atlantic
Ocean
North
PacificOcean
Indian
Ocean
MESA : Community of ~1000, Jan 2019
+
Josiah Schwab
Evan Bauer
Rob Farmer
Warrick Ball
Anne Thoul
Bill Wolf
Pablo Marchant
Matteo CantielloRich Townsend Bill Paxton Lars BildstenFrank TimmesAaron Dotter
Radek SmolecAdam Jermyn
MI T
RSP STELLA
Multiple Instrument Papers
Usually there is one software instrument paper, occasionally two separated by decadal timescales.
We update the community with instrument papers describing new science capabilities about every two years.
2013
2018
2019
2015
2011MESA I
MESA II
MESA III
MESA IV
MESA V
Citations: 2,456
Citations to papers
that cite MESA: 37,645
Larger Science Community
MESA
InfluenceRadius ≈15
MESA I - Top 5 in 2011 MESA III - Top 5 in 2015
MESA IV - Top 30 in 2018 MESA II - Top 10 in 2013
Citations
0
300
600
900
2011 2012 2013 2014 2015 2016 2017 2018
MESA I 2011
MESA II 2013
MESA III 2015
MESA IV 2018
Data from SAO/NASA ADS
We provide two portals to openly share knowledge.
MESA-Users offers over 10,000 archived and searchable
posts on community discussions of stellar astrophysics.
Actively Support the MESA Community
Nu
mb
er
of MESA
Use
r M
ess
ag
es
0
450
900
1350
1800
2010 2011 2012 2013 2014 2015 2016 2017 2018
mesastar.org offers a Zenodo backed portal to share tools, inlists, guidance, and to build provenance.
Currently there are ~400 contributions by the community, for the community.
Pulsations:
Stars:
Pulsations:
Adipls
MESA
Support:
Support:
Nuclear:
WeakLib
Cyberhub:
NuGrid
Nuclear:
StarLib
Nuclear:
AZURE
3D hydro:
Castro3D hydro:
Athena
3D hydro:
FLASH
Dedalus
3D hydro:
MAESTRO
3D hydro:
PPMStar
3D hydro:Opacity:
Opacity:
ASTROBEAR
OP
OPLIB
3D hydro:
Changa
3D hydro:
ENZO
GAMMA
PyMESA
HYPATIA
VMESA
MESA-Script
Support:
Nuclear:
GCE:
Ports:
SYGMA
Yields:
Stars:
OMEGA
GCE:
Support:
JINABase
MESA-Test
3D hydro:
Phantom
3D hydro:
3D hydro:
Isochrones:
GYRE
N-Body:
Amuse
CMFGEN
Spectra:
Spectra:
CLOUDY
StarCrash
Education:
MESAWeb Support:
MESA-
Docker
Stars:
Dstar
Nuclear:
JINA
Reaclib
LIGO ASAS-SN ZTF NuSTARGaia LSSTLCO JWST TESS
Radiation:
STELLA
Stellar
Pulsations:
RSP
MI T
NSCL FRIB CASPAR SECAR St. George
Usually a forked source code is released when
people are not getting what they want.
We keep the pace of development high enough
that any fork quickly becomes outdated.
Num
ber
of MESA
Develo
per
Messag
es
0
1000
2000
3000
4000
2016 2017 2018 2019
NO BIT RØT
We provide a Software Development Kit to build
MESA across a variety of Unix-based platforms.
Make MESA Easy To Use
MESAsdk
Lead: Rich Townsend
MESA-Docker simplifies the requirements for locally running
a full installation, with only minor overhead from running in a
container. This is useful for new users and Windows users.
Lead: Evan Bauer
MESA-WEB is a web-based cloud resource for education
that has served 4000+ models to ~550 unique users in
3 years of operation.
http://mesa-web.asu.edu
Lead: Carl Fields
Building Our Next Generation
The MESA Summer School offers a week of extensive
hands-on labs to gain familiarity with MESA and learn how
to make better use of MESA in their own research.
The Summer School cadre of instructors, TAs and
participants (now over 250) are creating their own MESA
user infrastructure at ~40 institutions around the world.
0
15
30
45
2012 2013 2014 2015 2016 2017 2018
Grads Postdocs Undergrads Faculty Amateurs
47% Women
68% USA
39% Women
66% USA
28% Women
80% USA
33% Women
64% USA
31% Women
50% USA
42% Women
46% USA
31% Women
38% USA
We focus on supporting young scientists who are also
skilled at developing community software instruments to
obtain high-profile graduate fellowships (6), named postdoc
fellowships (6), and tenure-stream positions (5).
1Lesson: Market community rather than source code.
MESA Funding Profile
2011 $0 - Failure1
2013 $500K for 3 years from NSF2
2017 $3M for 4 years from NSF3
2019 $35K from Ford/Sloan3
2020 TBD (New Opportunities)
2Lesson: Quantify and brand all aspects of the project.
3Lesson: Build an ecosystem.
Community-driven software and data ecosystems that accelerate new science.
GYRE
R
JOSS
Astropy TOM TVS
Einstein
Toolkit
Dedalus
MESA
KROME
ASCLemcee
yt ATHENA
REACLIB
JETFIT
Librarys:
3D Hydro:
Nuclear:
GRB:
Journals:
Astronomy: Astronomy:
Relativity:
Analysis:
Visualization:
Analysis:
Stars:
Stars:
Chemistry:
People:
People:
People:
3D Hydro:
Ford + SloanFoundations
JINA-CEE
KITP
LIGO Hubble NuSTARLSST LCOGTGaia SDSS JWST TESS
Laboratory Astrophysics
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