Korg

fast 1D LTE stellar spectral synthesis

https://github.com/ajwheeler/korg.jl

Science Score: 36.0%

This score indicates how likely this project is to be science-related based on various indicators:

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CITATION.cff file
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codemeta.json file
Found codemeta.json file
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.zenodo.json file
Found .zenodo.json file
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DOI references
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Academic publication links
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Committers with academic emails
2 of 7 committers (28.6%) from academic institutions
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Scientific vocabulary similarity
Low similarity (12.3%) to scientific vocabulary

Last synced: 9 months ago · JSON representation

Repository

fast 1D LTE stellar spectral synthesis

Basic Info

Host: GitHub
Owner: ajwheeler
License: bsd-3-clause
Language: Julia
Default Branch: main
Homepage: https://ajwheeler.github.io/Korg.jl/
Size: 85.5 MB

Statistics

Stars: 57
Watchers: 6
Forks: 9
Open Issues: 39
Releases: 89

Created over 5 years ago · Last pushed 9 months ago

Metadata Files

Readme License Codemeta

Korg.jl

Korg is a package for computing stellar spectra from 1D model atmospheres and linelists assuming local thermodynamic equilibrium. It can be used with Julia or Python. Here's some things it can do: - Computing spectra from Teff, logg, abundances, etc. - Fitting whole spectra or individual lines via synthesis or equivalent widths - Excitation-ionization balance from equivalent width data - Model atmosphere interpolation, parsing and using atmosphere files (MARCS) - Parsing and using linelists in VALD, Kurucz, MOOG, ExoMol, and Turbospectrum formats, with several defaults built-in. - Automatic differentiaion (via ForwardDiff.jl) - Synthesis with arbitrary abundances/solar abundance scales, with several defaults built-in.

After installing Korg, get started by looking at the top-level functions or the tutorial notebooks.

Example

(Python version below) ```julia using Korg, PyPlot

wls, flux, continuum = synth( Teff=5000, # effective temperature of 5000 Kelvin logg=4.32, # surface gravity of 10^(4.32) cm/s² mH=-1.1, # metallicity, [m/H]. Overridden for individual elements by alphaH and individual abundances C=-0.5, # The Carbon abundance, [C/H]. Works for anything from He to U. linelist=Korg.getGALAHDR3_linelist(), wavelengths=(5850, 5900) )

plot

figure(figsize=(12, 4)) plot(wls, flux, "k-") xlabel(L"$\lambda$ [Å]") ylabel(L"$F\lambda/R\mathrm{star}^2$ [erg s$^{-1}$ cm$^{-5}$]"); ``` spectrum

See the documentation for synth, or the documentation for synthesize for advanced usage.

Code papers (please cite these if you use Korg):

Korg: A Modern 1D LTE Spectral Synthesis Package. This is also a good overview of how spectral synthesis works, the inputs and outputs, etc.
Korg: fitting, model atmosphere interpolation, and Brackett lines

Tutorials:

Getting help

If you are having trouble using or installing Korg, please get in touch by opening a GitHub issue (preferred), or sending Adam an email.

You can also call Korg from python

See the documentation for setup instructions. ```python from juliacall import Main as jl jl.seval("using Korg"); Korg = jl.Korg

calling Korg.synth is exactly the same as in Julia.

wls, flux, continuum = Korg.synth( Teff=5000, logg=4.32, mH=-1.1, C=-0.5, linelist=Korg.getGALAHDR3linelist(), wavelengths=(5850, 5900) ) ```

Multithreading

Korg can use multithreading to speed up line opacity calculation, the most expensive step for syntheses. To use it launch Julia with more than one thread, using the -t command-line argument, or by setting the $JULIA_NUM_THREADS environment variable.

Owner

Name: Adam Wheeler
Login: ajwheeler
Kind: user
Company: Ohio State University

Website: ajwheeler.github.io
Repositories: 23
Profile: https://github.com/ajwheeler

CodeMeta (codemeta.json)

{
  "@context": "https://doi.org/10.5063/schema/codemeta-2.0",
  "@type": "SoftwareSourceCode",
  "name": "Korg: 1D local thermodynamic equilibrium stellar spectral synthesis",
  "description": "Korg computes stellar spectra from 1D model atmospheres and linelists assuming local thermodynamic equilibrium and implements both plane-parallel and spherical radiative transfer. The code is generally faster than other codes, and is compatible with automatic differentiation libraries and easily extensible, making it ideal for statistical inference and parameter estimation applied to large data sets.",
  "identifier": "ascl:2211.016",
  "author": [
    {
      "@type": "Person",
      "givenName": "Adam J.",
      "familyName": "Wheeler",
      "@id": "https://orcid.org/0000-0001-7339-5136"
    },
    {
      "@type": "Person",
      "givenName": "Matthew W.",
      "familyName": "Abruzzo",
      "@id": "https://orcid.org/0000-0002-7918-3086"
    },
    {
      "@type": "Person",
      "givenName": "Andrew R.",
      "familyName": "Casey",
      "@id": "https://orcid.org/0000-0003-0174-0564"
    },
    {
      "@type": "Person",
      "givenName": "Melissa K.",
      "familyName": "Ness",
      "@id": "https://orcid.org/0000-0001-5082-6693"
    }
  ],
  "citation": "https://ui.adsabs.harvard.edu/abs/arXiv:2211.00029",
  "relatedLink": [],
  "codeRepository": [
    "https://github.com/ajwheeler/korg.jl"
  ],
  "referencePublication": [
    {
      "@type": "ScholarlyArticle",
      "url": "https://ui.adsabs.harvard.edu/abs/2023AJ....165...68W/abstract",
      "@id": "https://doi.org/10.3847/1538-3881/acaaad"
    }
  ],
  "license": "https://spdx.org/licenses/BSD-3-Clause.html"
}

GitHub Events

Total

Create event: 102
Commit comment event: 22
Issues event: 53
Release event: 9
Watch event: 16
Delete event: 87
Issue comment event: 159
Push event: 343
Pull request review event: 43
Pull request review comment event: 72
Pull request event: 151
Fork event: 4

Last Year

Create event: 102
Commit comment event: 22
Issues event: 53
Release event: 9
Watch event: 16
Delete event: 87
Issue comment event: 159
Push event: 343
Pull request review event: 43
Pull request review comment event: 72
Pull request event: 151
Fork event: 4

Committers

Last synced: about 3 years ago

All Time

Total Commits: 752
Total Committers: 7
Avg Commits per committer: 107.429
Development Distribution Score (DDS): 0.383

Top Committers

Name	Email	Commits
Adam Wheeler	a**r@c**u	464
Adam Wheeler	w**3@o**u	140
Adam Wheeler	a**r@g**m	67
Matthew Abruzzo	m**o@g**m	61
Andy Casey	a**y@g**m	9
CompatHelper Julia	c**y@j**g	8
github-actions[bot]	4**]@u**m	3

Committer Domains (Top 20 + Academic)

julialang.org: 1 osu.edu: 1 columbia.edu: 1

Issues and Pull Requests

Last synced: 9 months ago

All Time

Total issues: 107
Total pull requests: 407
Average time to close issues: 5 months
Average time to close pull requests: 12 days
Total issue authors: 15
Total pull request authors: 10
Average comments per issue: 3.0
Average comments per pull request: 1.1
Merged pull requests: 321
Bot issues: 0
Bot pull requests: 32

Past Year

Issues: 44
Pull requests: 180
Average time to close issues: 5 days
Average time to close pull requests: 9 days
Issue authors: 9
Pull request authors: 8
Average comments per issue: 0.34
Average comments per pull request: 0.73
Merged pull requests: 130
Bot issues: 0
Bot pull requests: 16

View more stats

Top Authors

Issue Authors

ajwheeler (66)
segasai (14)
mabruzzo (9)
zachway1996 (3)
andrew-saydjari (3)
svenbuder (2)
tadmatsuno (2)
fredifqh (1)
djohn134 (1)
catmanea (1)
andycasey (1)
shbhuk (1)
zachway (1)
JuliaTagBot (1)
13emilygriffith (1)

Pull Request Authors

ajwheeler (352)
github-actions[bot] (26)
dependabot[bot] (6)
mabruzzo (5)
andycasey (5)
andrew-saydjari (4)
CharleskingSpikeArphience (3)
pacargile (2)
abhro (2)
cgarling (2)

Top Labels

Issue Labels

performance (3) precision (3) enhancement (2)

Pull Request Labels

dependencies (6) github_actions (6) documentation (1)

Packages

Total packages: 1
Total downloads:
- julia 30 total

Total dependent packages: 0
Total dependent repositories: 0
Total versions: 89

juliahub.com: Korg

fast 1D LTE stellar spectral synthesis

Homepage: https://ajwheeler.github.io/Korg.jl/
Documentation: https://docs.juliahub.com/General/Korg/stable/
License: BSD-3-Clause
Latest release: 0.47.1
published 10 months ago

Versions: 89
Dependent Packages: 0
Dependent Repositories: 0
Downloads: 30 Total

Rankings

Dependent repos count: 9.9%

Stargazers count: 26.7%

Average: 27.2%

Forks count: 33.3%

Dependent packages count: 38.9%

Last synced: 9 months ago

Dependencies

.github/workflows/TagBot.yml actions

JuliaRegistries/TagBot v1 composite

.github/workflows/Test.yml actions

actions/cache v2 composite
actions/checkout v2 composite
codecov/codecov-action v1 composite
julia-actions/julia-buildpkg latest composite
julia-actions/julia-docdeploy latest composite
julia-actions/julia-processcoverage v1 composite
julia-actions/julia-runtest latest composite
julia-actions/setup-julia v1 composite

.github/workflows/CompatHelper.yml actions

Korg

Science Score: 36.0%

Repository

Basic Info

Statistics

Metadata Files

README.md

Korg.jl

Example

plot

Code papers (please cite these if you use Korg):

Tutorials:

Getting help

You can also call Korg from python

calling Korg.synth is exactly the same as in Julia.

Multithreading

Owner

CodeMeta (codemeta.json)

GitHub Events

Total

Last Year

Committers

All Time

Top Committers

Committer Domains (Top 20 + Academic)

Issues and Pull Requests

All Time

Past Year

Top Authors

Issue Authors

Pull Request Authors

Top Labels

Issue Labels

Pull Request Labels

Packages

juliahub.com: Korg

Rankings

Dependencies