B Would like to explore the Henry Draper catalogue of stars

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The discussion focuses on exploring the Henry Draper (HD) catalogue of stars to enhance understanding of exoplanet host stars. The user expresses confusion about navigating the VizieR site and accessing relevant data, specifically seeking a clear display of star information like Absolute Magnitude and Distance. A response clarifies that the VizieR catalogue provides celestial positions, apparent magnitudes, and spectral types, but does not include distances or absolute magnitudes. The user acknowledges the guidance and plans to follow the suggested steps, indicating a willingness to seek further help if needed. Overall, the conversation highlights the challenges of accessing astronomical data and the importance of clear navigation instructions.
Cerenkov
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Hello.

I would like to explore the Henry Draper (HD) catalogue of stars so that I can improve my understanding of the host stars of many exoplanets. When I went to Wikipedia, they provided a link to this site. https://vizier.cds.unistra.fr/

The VizieR, TAP and XMatch icons appear to lead to pages that can be used to interrogate the HD catalogue, but in ways that are beyond me.

The Ftp icon requests that I open Microsoft Edge and when I do do that a Google page appears.

The ReadMe icon is also confusing to me in what it displays.

I was hoping that I could view the HD catalogue as a set of columns displaying information about the stars listed therein. For instance, Absolute Magnitude, Spectral Type, Distance in light years or parsecs, and so on.

So, given my confusion, could anyone please help me further? Or is this just a case that my naïve expectations fall short of the reality?

Thanks in advance.

Cerenkov.
 
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When you click the VizieR icon, you should get something like this:
1650920848291.png

If you don't type in any target name, and just press enter (or click 'submit'), it'll display as many positions of the catalogue as you have indicated in the preferences menu (visible on the lower left of the screenshot), starting from the first. Set it to unlimited to get all quarter of a million+ positions listed.
This catalogue will only give you celestial position, apparent magnitude (two types), and spectral type. It doesn't include distances nor absolute magnitudes.
 
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Bandersnatch said:
When you click the VizieR icon, you should get something like this:
View attachment 300561
If you don't type in any target name, and just press enter (or click 'submit'), it'll display as many positions of the catalogue as you have indicated in the preferences menu (visible on the lower left of the screenshot), starting from the first. Set it to unlimited to get all quarter of a million+ positions listed.
This catalogue will only give you celestial position, apparent magnitude (two types), and spectral type. It doesn't include distances nor absolute magnitudes.

Thank you Bandersnatch.

I'll start as you suggest. I may well have follow questions if I find myself stuck, but for now I'll see how I go.

Thanks again,

Cerenkov.
 

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