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This project makes a query on stars that have a mass determined by Gaia DR3 and makes comparisons with other masses determined in an astrophysics work.

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ander-son-almeida/open-clusters-mass-query

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About Project

Gaia catalogs are queried using ADQL, a query language similar to SQL. In the latest data release (DR3), Gaia includes a mass estimate for the observed stars.

This project was developed to perform a query on the masses determined by Gaia. With these data, comparisons are made with the masses determined by myself, using a new method of mass determination, which can be consulted here.

The results of the comparisons are visually expressed in two graphs relating the masses, so that we can study possible systematic differences.

Run

In this project it is possible to compare open clusters individually or as a whole sample. Such objects are in the “results_eDR3_likelihood_2022” folder.

In the main.py file we have two parameters that assume boolean values: 1) “all_cluster” if set to “True” compares the mass of all clusters and 2) “cluster_target”, if set to “True” automatically activates “cluster_name”, that the user can manually enter the name of the open cluster. Both boolean values cannot be the same, it is up to the user to decide which analysis to select.

Example of results

all_clusterr_git

pleiades_git

Requirements

  • Numpy
  • Pandas
  • Matplotlib
  • Astroquery

About

This project makes a query on stars that have a mass determined by Gaia DR3 and makes comparisons with other masses determined in an astrophysics work.

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