How can I access the Hipparchus HR Diagram data for my project?

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SUMMARY

The discussion centers on accessing Hipparchus data for constructing a Hertzsprung-Russell (HR) diagram to perform main-sequence fitting for measuring distances to open clusters. Users are directed to the SDSS website, which provides comprehensive access to Hipparcos data, including necessary calculations for distances and absolute magnitudes of stars. The Hipparcos data is essential for creating accurate HR diagrams, and the provided link serves as a resource for obtaining the required data points.

PREREQUISITES
  • Understanding of Hertzsprung-Russell (HR) diagrams
  • Familiarity with parallax measurements in astronomy
  • Knowledge of absolute and visual magnitude calculations
  • Basic skills in data plotting and analysis
NEXT STEPS
  • Access the Hipparcos data through the SDSS website for HR diagram construction
  • Learn how to calculate distances from parallax angles
  • Study methods for main-sequence fitting in astrophysics
  • Explore data visualization techniques for astronomical data analysis
USEFUL FOR

Astronomy students, astrophysicists, and researchers involved in stellar distance measurement and HR diagram analysis will benefit from this discussion.

Mu naught
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Hi, I need a large set of data points from an accurate HR diagram. I will be performing some main-sequence fitting to measure the distance to an open cluster as part of a project.

I talked to my professor and he said trying using the Hipparchus data, but I haven't been able to find it online. What I need are the numbers used to construct the diagram so I can make a plot of them myself to compare with my own data. If you know what he meant, could someone point me in the right direction, or if you know of another source I could use I would appreciate it.

Thanks
 
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Mu naught said:
Hi, I need a large set of data points from an accurate HR diagram. I will be performing some main-sequence fitting to measure the distance to an open cluster as part of a project.

I talked to my professor and he said trying using the Hipparchus data, but I haven't been able to find it online. ..

http://cas.sdss.org/dr3/en/proj/advanced/hr/hipparcos1.asp

==quote==
Much like SDSS data, all Hipparcos data are available online. On the next page, you will use Hipparcos data to help make an H-R diagram. You will calculate the distances to several stars from their parallax angles. You will then use this distance, along with each star's visual magnitude, to calculate its absolute magnitude.
==endquote==

How did you not find the necessary stuff online? It seems to me that this website actually works through the example of making an HR diagram using Hipparchos data. Maybe I'm missing something. :smile:
 
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