# Modeling of DP0.2 Stars

**URL:** <https://www.rubin.community/t/modeling-of-dp0-2-stars/7220>\
**Category:** Support\
**Tags:** dp0\
**Created:** [November 15, 2022, 10:22pm UTC](https://www.rubin.community/t/modeling-of-dp0-2-stars/7220 "2022-11-15T22:22:42Z")\
**Posts on this page:** 5\
**Page:** 1

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**Author:** ![babel](https://sea2.discourse-cdn.com/flex002/user_avatar/www.rubin.community/babel/32/2085_2.png) [@babel](https://www.rubin.community/u/babel)\
**Post date:** [November 15, 2022, 10:22pm UTC](https://www.rubin.community/t/modeling-of-dp0-2-stars/7220/1 "2022-11-15T22:22:42Z")

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Happy Tuesday! I’m looking for a reference that will tell me how the DP0.2 Object catalog stars were created. I’ve plotted color-color plots from the Object catalog. They currently look wildly different than actual stars from the Pickle’s Atlas and I’m trying to figure out why.

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**Author:** ![jeffcarlin](https://sea2.discourse-cdn.com/flex002/user_avatar/www.rubin.community/jeffcarlin/32/491_2.png) [@jeffcarlin](https://www.rubin.community/u/jeffcarlin)\
**Post date:** [November 15, 2022, 10:30pm UTC](https://www.rubin.community/t/modeling-of-dp0-2-stars/7220/2 "2022-11-15T22:30:53Z")

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Hi Bob - See section 5.3 of the [DC2 overview paper](https://ui.adsabs.harvard.edu/abs/2021ApJS..253...31L/abstract) for some basics about how the stars were simulated. (You may need to look into the Galfast model for details.) I would expect color-color plots from DC2 stars to look reasonably similar to SDSS color-color plots.

Hope that’s helpful!

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**Author:** ![MelissaGraham](https://sea2.discourse-cdn.com/flex002/user_avatar/www.rubin.community/melissagraham/32/2549_2.png) [@MelissaGraham](https://www.rubin.community/u/MelissaGraham)\
**Post date:** [November 28, 2022, 6:37pm UTC](https://www.rubin.community/t/modeling-of-dp0-2-stars/7220/3 "2022-11-28T18:37:57Z")

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Hi @babel, just following up to see if Jeff’s response solved the issue, or if there are follow-up questions on this topic?

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**Author:** ![babel](https://sea2.discourse-cdn.com/flex002/user_avatar/www.rubin.community/babel/32/2085_2.png) [@babel](https://www.rubin.community/u/babel)\
**Post date:** [November 28, 2022, 9:39pm UTC](https://www.rubin.community/t/modeling-of-dp0-2-stars/7220/4 "2022-11-28T21:39:58Z")

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Thank you Jeff!

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**Author:** ![babel](https://sea2.discourse-cdn.com/flex002/user_avatar/www.rubin.community/babel/32/2085_2.png) [@babel](https://www.rubin.community/u/babel)\
**Post date:** [November 30, 2022, 7:34pm UTC](https://www.rubin.community/t/modeling-of-dp0-2-stars/7220/5 "2022-11-30T19:34:59Z")

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Thanks again, Jeff. The stars are indeed based on SDSS observations and the best information I could find came from GALFAST sources:  
[https://confluence.lsstcorp.org/display/SIM/Database+Contents+--+Catalog+Simulations](https://confluence.lsstcorp.org/display/SIM/Database+Contents+--+Catalog+Simulations)  
and

> **[Home · mjuric/galfast Wiki](https://github.com/mjuric/galfast/wiki)**
>
> Milky Way Mock Catalog Generator. Contribute to mjuric/galfast development by creating an account on GitHub.

I particularly liked how the author lists himself as “The Guilty Party”