Querying massive galaxies as potential deflectors

[Vibhore-ARIES]

In this PR, I have added a script(s) to SLSim, to query massive elliptical galaxies and identify which of them can act as potential deflectors based on the angular cross section, source luminosity function and their magnitudes and redshift etc.

The following scripts are added in this PR:

1. 'query_galaxies_as_deflectors.py' to slsim/Deflectors/
2. srcprop.py to slsim/
3. 'srclensprop.py' to slsim/
4. 'example_query_galaxies_as_deflectors.ipynb' to notebooks
5. 'test_query_galaxies_as_deflectors.py' to slsim/tests/tests_Deflectors.

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[nkhadka21]

Hi @Vibhore-ARIES , Thank you very much for this PR! This PR has CI failure and also other fail. When you make iyt to pass these test, I will then review it.

[codecov]

Codecov Report

Attention: Patch coverage is 63.03725% with 129 lines in your changes missing coverage. Please review.

Project coverage is 95.46%. Comparing base (99f2118) to head (fbb9713).

Files with missing lines	Patch %	Lines
slsim/srcprop.py	54.32%	74 Missing ⚠️
slsim/Deflectors/query_galaxies_as_deflectors.py	60.49%	32 Missing ⚠️
slsim/srclensprop.py	78.30%	23 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #251      +/-   ##
==========================================
- Coverage   97.89%   95.46%   -2.44%     
==========================================
  Files          70       73       +3     
  Lines        4652     5001     +349     
==========================================
+ Hits         4554     4774     +220     
- Misses         98      227     +129     

Files with missing lines	Coverage Δ
slsim/srclensprop.py	78.30% <78.30%> (ø)
slsim/Deflectors/query_galaxies_as_deflectors.py	60.49% <60.49%> (ø)
slsim/srcprop.py	54.32% <54.32%> (ø)

[Vibhore-ARIES]

Hi @Vibhore-ARIES , Thank you very much for this PR! This PR has CI failure and also other fail. When you make iyt to pass these test, I will then review it.

Hi @nkhadka21, thanks. Yes, I am fixing those issues.

[nkhadka21]

As we discussed, we should find potential deflector galaxies (mostly massive elliptical) from the DC2 catalog. Then, you can use these selected deflectors in LensPop.