Thanks for the suggestion! Is there anything in particular regarding redshift tho?gneill said:Perhaps begin with The Sloan Digital Sky Survey at https://www.sdss.org/ .
To calculate the distance I was thinking to use the redshift parameter. I haven’t really studied this yet, but I found this redshift table and of values at this website (https://lco.global/spacebook/light/redshift/) and could use algebra to find it. Is there a more systematic way to find it that you know of? For the database, that looks great, I’ll have a look around and try to figure it out!phyzguy said:It depends what you're looking for. Why don't you try starting with the SkyServer at this link? You can pan around looking at objects, and if you find one you are interested in, you click on the "Quick Look" button, and it will take you to a link like this one, which gives the redshift (z) of this object, which is 0.0948... There are also many catalogs of objects at this site, but you will need to invest time to learn how to use them.
As for your OP, once you know the redshift of the object, do you have a proposal for an independent way to find the distance?
An astrophysics database is a collection of organized and structured data related to astronomical objects, such as stars, galaxies, and planets. These databases contain information compiled from various sources, including observations, experiments, and theoretical models.
Astrophysics databases can be found online through various websites and repositories, such as NASA's Astrophysics Data System (ADS), the European Space Agency's Gaia Science Archive, and the International Astronomical Union's SIMBAD database.
Astrophysics databases include a wide range of data, such as observational data from telescopes and satellites, theoretical models and simulations, astronomical catalogs, and publications from scientific journals. They may also include images, spectra, and other multimedia data.
Astrophysics databases are essential tools for conducting research in the field of astrophysics. They allow scientists to access and analyze large amounts of data, make connections between different sources of information, and test theoretical models against observations. They also facilitate collaboration between researchers and provide a platform for publishing and sharing new discoveries.
While some astrophysics databases are publicly accessible, many require a subscription or institutional access. However, some databases offer a limited amount of data and resources for free, and there are also citizen science projects that allow the general public to contribute to astrophysics research.