Which Online Star Catalogue Provides Distances and Masses of Stars?

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Homework Help Overview

The discussion revolves around finding an online star catalogue that provides distances and masses of stars, specifically for two stars located approximately 346.7 parsecs and 0.4786 parsecs from Earth. The context is related to an assignment involving supernovae and the identification of potential high-mass stars.

Discussion Character

  • Exploratory, Assumption checking

Approaches and Questions Raised

  • The original poster seeks specific star catalogues that provide the required data, expressing uncertainty about the availability of such information. Some participants suggest existing catalogues like Hipparcos for distance measurements, while questioning the availability of mass data.

Discussion Status

Participants are exploring various catalogues and their online availability. There is some guidance provided regarding the existence of online resources, but no consensus on the specific catalogues that meet the original poster's needs has been reached.

Contextual Notes

There is a noted challenge in obtaining mass data for stars, as it is more complex than distance measurements. The discussion also touches on the accessibility of catalogues created with public funding.

dekoi
I need to access a star catalogue on the internet that will tell me the distance of the stars from earth, as well as the mass of the stars.

I need to "find" 2 stars:
approx. 346.7 pc from Earth
approx. 0.4786 pc from Earth

I realize that there may be none. However, the point of the assignment is to find these values for a supernova, and then determine whether there is ACTUALLY a high-mass star that close to Earth that can one day explode as a supernova.

Thank you for any help you can provide-- whether you know the answer, or you know of a catalogue of the type specified.
 
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You get distances from almost any decent catalog, e.g. Hipparcos. I don't know of any catalogs which directly include mass, since mass is a relatively challenging quantity that cannot be determined (as of yet) by a highly-automated satellite observatory.

Here's a good list of the most common star catalogs:

http://ad.usno.navy.mil/star/star_cats_rec.shtml

- Warren
 
Last edited by a moderator:
Is there an on-line catalogue? I don't think those are on-line.

Thanks.
 
Almost every catalog listed there is available in its entirety online, as they were created with public funds and are considered public information. Most of them even have online search tools, publicly available.

Come on, dekoi. Read the page. Click the links. Use google.

- Warren
 

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