Upgrade to Pro
— share decks privately, control downloads, hide ads and more …
Speaker Deck
Features
Speaker Deck
PRO
Sign in
Sign up for free
Search
Search
SMHASH telecon 03/2015
Search
Adrian Price-Whelan
March 11, 2015
Science
0
100
SMHASH telecon 03/2015
Adrian Price-Whelan
March 11, 2015
Tweet
Share
More Decks by Adrian Price-Whelan
See All by Adrian Price-Whelan
the Astropy project - Flatware
adrn
1
230
the dynamic Milky Way in the Gaia era
adrn
1
210
The Astropy Project
adrn
1
120
Git and version control
adrn
1
120
Chaos and stellar streams
adrn
1
180
Software testing
adrn
0
210
Local Group Astrostatistics
adrn
1
89
100% Outer Space
adrn
1
160
Caltech 03/2015
adrn
0
170
Other Decks in Science
See All in Science
Accelerated Computing for Climate forecast
inureyes
PRO
0
120
KH Coderチュートリアル(スライド版)
koichih
1
46k
Explanatory material
yuki1986
0
400
My Favourite Book in 2024: Get Rid of Your Japanese Accent
lagenorhynque
1
110
07_浮世満理子_アイディア高等学院学院長_一般社団法人全国心理業連合会代表理事_紹介資料.pdf
sip3ristex
0
610
01_篠原弘道_SIPガバニングボード座長_ポスコロSIPへの期待.pdf
sip3ristex
0
660
AIによる科学の加速: 各領域での革新と共創の未来
masayamoriofficial
0
120
Quelles valorisations des logiciels vers le monde socio-économique dans un contexte de Science Ouverte ?
bluehats
1
500
データベース09: 実体関連モデル上の一貫性制約
trycycle
PRO
0
990
傾向スコアによる効果検証 / Propensity Score Analysis and Causal Effect Estimation
ikuma_w
0
130
Transport information Geometry: Current and Future II
lwc2017
0
200
06_浅井雄一郎_株式会社浅井農園代表取締役社長_紹介資料.pdf
sip3ristex
0
630
Featured
See All Featured
Dealing with People You Can't Stand - Big Design 2015
cassininazir
367
27k
Fireside Chat
paigeccino
39
3.6k
ReactJS: Keep Simple. Everything can be a component!
pedronauck
667
120k
Fight the Zombie Pattern Library - RWD Summit 2016
marcelosomers
234
17k
The Web Performance Landscape in 2024 [PerfNow 2024]
tammyeverts
9
810
4 Signs Your Business is Dying
shpigford
184
22k
個人開発の失敗を避けるイケてる考え方 / tips for indie hackers
panda_program
113
20k
Agile that works and the tools we love
rasmusluckow
330
21k
Into the Great Unknown - MozCon
thekraken
40
2k
Automating Front-end Workflow
addyosmani
1370
200k
For a Future-Friendly Web
brad_frost
180
9.9k
Creating an realtime collaboration tool: Agile Flush - .NET Oxford
marcduiker
31
2.2k
Transcript
Rewinder adrian price-whelan
Tidal disruption is simple
t = 0 Price-Whelan et al. (2014) Rewinder
Rewinder Price-Whelan et al. (2014) t = -1 evaluate likelihood
Rewinder Price-Whelan et al. (2014) t = -2 evaluate likelihood
Rewinder Price-Whelan et al. (2014) t = -3
⌧ub K unbinding time leading/trailing tail M mass today any
parametrization per star progenitor potential (l, b, d, µl, µb, vr) (l, b, d, µl, µb, vr) marginalize out WE’RE HOSED Rewinder Price-Whelan et al. (2014)
−100 −50 0 50 X [kpc] −100 −50 0 X
[kpc] x “Data”: Price-Whelan et al. (2014) 8 “RR Lyrae” stars Gaia velocity errors 2% distance errors + Progenitor, same errors
8 RR Lyrae stars Gaia velocity errors 2% distance error
Price-Whelan et al. (2014)
Price-Whelan et al. (2014) 8 RR Lyrae stars 2% distance
errors No proper motions
Price-Whelan et al. (2014) Recover unobserved proper motion for stars
Nparams / 6Nstars Good: Bad: - test particle orbits (no
N-body) - arbitrary potentials - observational uncertainties / missing data - less sensitive to observational biases
Next Marginalize true phase-space positions of the stars Marginal likelihood
has fixed dimensionality set by potential params., progenitor params Price-Whelan et al. (in prep.)