<p>I am working with JWST data. I want to estimate the redshift of the sources I have identified with SEXtractor with the help of prospector. Can somebody guide me in this?</p>

CC BY-SA 4.0
2024-07-03T14:55:34.923Z
My question is off topic: what is a "prospector".
ayr
CC BY-SA 4.0
2024-07-04T04:18:45.850Z
Prospector is a package to conduct principled inference of stellar population properties from photometric and/or spectroscopic data using flexible models. One can use it to estimate redshift of sources by fitting an SED.
Walker
CC BY-SA 4.0
2024-07-04T04:27:26.220Z
The initial data arrives on Earth from JWT. Where can I watch them? I would like to see the structure and what they look like in general.
ayr
CC BY-SA 4.0
2024-07-04T04:50:15.030Z
The initial JWST data can be downloaded from MAST(Mikulski Archive for Space Telescopes), I have an extracted source list with magnitudes and errors, and want to exctarct redshift from such a catalogue
Walker
CC BY-SA 4.0
2024-07-04T05:06:59.663Z
Then first we need to understand how a prospector works. Surely there must be some examples. Perhaps you can get some information from here https://prospect.readthedocs.io/en/latest/tutorial.html https://iopscience.iop.org/article/10.3847/2041-8213/acba99/pdf https://github.com/bd-j/prospector/blob/main/doc/quickstart.rst
ayr
CC BY-SA 4.0
2024-07-04T05:39:11.390Z
I have gone through them and their manual , what we need is a parameter_file.py which contains all the details of fitting and all.
Walker
CC BY-SA 4.0
2024-07-04T05:42:09.050Z
yes, we now need to figure out how this file is structured.
ayr
CC BY-SA 4.0
2024-07-04T05:53:36.800Z
So it basically needs two functions build_obs() and build_model(), in which build_obs() is just creating a dictionary of the flux in units of maggies. The trouble is in the part of build_model() and then creating the whole file
Walker
CC BY-SA 4.0
2024-07-04T05:54:44.613Z
Let us [continue this discussion in chat](https://chat.stackexchange.com/rooms/153981/discussion-between-walker-and-ayr).
Walker
<redshift><python><james-webb-space-telescope>
Using prospector for jwst data
Walker
# Using prospector for jwst data

(Asked by: username_0 on 2024-07-03)

I am working with JWST data. I want to estimate the redshift of the sources I have identified with SEXtractor with the help of prospector. Can somebody guide me in this?

**Tags:** redshift, python, james-webb-space-telescope

> **Comments:**
> **username_1**: My question is off topic: what is a "prospector".  
> **username_0**: Prospector is a package to conduct principled inference of stellar population properties from photometric and/or spectroscopic data using flexible models. One can use it to estimate redshift of sources by fitting an SED.  
> **username_1**: The initial data arrives on Earth from JWT. Where can I watch them? I would like to see the structure and what they look like in general.  
> **username_0**: The initial JWST data can be downloaded from MAST(Mikulski Archive for Space Telescopes), I have an extracted source list with magnitudes and errors, and want to exctarct redshift from such a catalogue  
> **username_1**: Then first we need to understand how a prospector works. Surely there must be some examples. Perhaps you can get some information from here https://prospect.readthedocs.io/en/latest/tutorial.html https://iopscience.iop.org/article/10.3847/2041-8213/acba99/pdf https://github.com/bd-j/prospector/blob/main/doc/quickstart.rst  
> **username_0**: I have gone through them and their manual , what we need is a parameter_file.py which contains all the details of fitting and all.  
> **username_1**: yes, we now need to figure out how this file is structured.  
> **username_0**: So it basically needs two functions build_obs() and build_model(), in which build_obs() is just creating a dictionary of the flux in units of maggies. The trouble is in the part of build_model() and then creating the whole file  
> **username_0**: Let us [continue this discussion in chat](https://chat.stackexchange.com/rooms/153981/discussion-between-walker-and-username_1).  

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## 0 answers

