https://github.com/gully/hetdextoy

Toy model of what HETDEX will see for non-cosmology science
https://github.com/gully/hetdextoy

Last synced: 5 months ago
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Toy model of what HETDEX will see for non-cosmology science

• Host: GitHub
• URL: https://github.com/gully/hetdextoy
• Owner: gully
• License: mit
• Created: 2014-09-15T22:41:49.000Z (almost 12 years ago)
• Default Branch: master
• Last Pushed: 2014-09-17T00:38:08.000Z (over 11 years ago)
• Last Synced: 2025-04-26T08:57:51.694Z (about 1 year ago)
• Size: 316 KB
• Stars: 1
• Watchers: 2
• Forks: 0
• Open Issues: 0
• Metadata Files:
  • Readme: README.md
  • License: LICENSE

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README

          
HETDEXtoy

=========

Toy model of what HETDEX will see for non-cosmology science

Started as part of #AstroHackWeek

Main goals:

==========

1. Science with non-cosmology astronomical sources

2. Inference on atmosphere based on sky signal

3. Inference on instrument based on sky signal

Science with non-cosmology sources

---------------------

Strategy

1. Back-of-the-envelope calculations of number density for naive Celestial Sphere model

2. Back-of-the-envelope calculations of number density for realistic Luminosity Function and distance distribution

3. Retrieval of desired quantities of interest at the low S/N ratio limit

Sensitivity issues:

+ Absolute (gray) flux of spectral targets

+ Typical spectrum of average target

+ Average spectral response of VIRUS

Number of spectra:

+ Total number of unique sky positions

+ Unique sky positions as a function of observing year

Probability of hitting a source that was in:

+ SDSS

+ SDSS Stripe 82

Inference on atmosphere based on sky signal

--------------------

How does cadence compare to typical HETDEX cadence?

+ Power spectrum of atmospheric variability

+ Typical HETDEX cadence

Atmospheric spectral diagnostics in wavelength range of interest

+ Average properties

+ Dependence on atmospheric conditions

+ Typical seasonal atmospheric variation

Spatial variation of Atmosphere

+ Attributable to real atmospheric physics

Inference on instrument based on sky signal

-------------------------------------------

Apparent variation of sky lines

+ Attributable to instrument