Questions tagged [star-catalogues]

Questions regarding lists of star designations.

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What 1° x 1° region is the optically darkest patch in the sky?

What 1° x 1° region of the night sky has the lowest flux of light? (considering the typical visual/luminance filter range, approximations using other filters/bands are acceptable, but should be in the ...
2080's user avatar
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4 votes
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Deepest known objects in the vicinity of Capella (or, generally, any specified object)

There must be a way to do this, but I don’t know where to start. Given a star (or other object, or a RA and dec), and a radius, what are the (say) 10 known deepest sky objects in this area, ordered ...
Bruce Simonson's user avatar
3 votes
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Understanding WISE acronyms

I've enoucntered many acronyms related between them, like AllWISE, WISE, NEOWISE, CatWISE, WISEA, WISEAR, WISEAF, WISEU, WISEP, WISEPA, WISEPC, WISEF, WISEPF, WISER, WISEWF, WISET, WISETF, WISENF... ...
Swike's user avatar
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2 votes
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Cross-matching astronomical catalogs

A project I'm working on involves getting data from SDSS DR12, and cross-matching it with NED, as described in Section 2 of this paper: 2.1 The sample From the SDSS Data Release 12 (DR12, Alam et al. ...
Jim421616's user avatar
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2 votes
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Gliese Catalog Designation prefixes

In the Gliese catalog there are a bunch of prefixes, such as GJ, GI, Wo, etc. My question is do the numbers overlap ever? I tried to look it up, but nothing I could find was conclusive to me.
Durakken's user avatar
  • 397
1 vote
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Calculate Luminosity of a star from the Hipparcos catalogue

Is it possible to calculate the star's luminosity based on the data in the Hipparcos catalogue? Currently I'm using this algorithm, I have even fitted the bolometric correction to the Johnson V band (...
someCO_OLguy's user avatar
1 vote
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Filtered Gaia DR3 datasets

I'm a programmer who'd like to process some of the smaller Gaia DR3 datasets. I ultimately want to use the Gaia Sky 15M default dataset, but decided to start with a smaller 1.9M dataset as a prototype....
aggregate1166877's user avatar
1 vote
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Simbad, NED databases surface magnitude data?

I can't seem to find data about surface magnitude of galaxies in Simbad. I can easily find the apparent and absolute magnitude ... Should I just try to compute the surface magnitude, given the ...
Adrian's user avatar
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1 vote
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Which parameters of stars could show they about to undergo a supernova explosion?

I need to seek stars in our galaxy about to undergo a SN from catalogues. I can find stars in our galaxy by setting parallax to a certain value. However, I don't know how to find a parameter which ...
Aegean's user avatar
  • 109
1 vote
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Star Catalog with radius, luminosity, and spectra class?

I am looking for a star catalog (hopefully a .csv file) that contains radius, luminosity, and spectra class data for 1000+ stars. I have checked catalogs like the HIP, HD, and GAIA catalogs. I have ...
Anti-Thorium's user avatar
1 vote
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Filtering local region in SIMBAD

I am completely new to astrophysics and currently writing a paper on Cepheid variables for high school physics. I would like to filter out all Cepheid variables in the local system which I would ...
Matthias G.'s user avatar
1 vote
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Duplicate entries in Tycho-2 main and supplement 1

When checking the internal consistency of the Tycho-2 catalogue, I came across 254 entries in the main catalogue file that are also present in supplement 1 (the Hipparcos/Tycho-1 stars not included in ...
Roel Zinkstok's user avatar
1 vote
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Stellar catalogues stars in specific sky regions – without downloading the catalogs

I’m interested, to give a scientific realism to a project I’m working on, in finding a picture of all stars belonging to a star catalogue such as Tycho 2 or Hipparcos for some very specific sky ...
Danko's user avatar
  • 11
0 votes
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What are Stokes parameters for galaxy shapes, how do they compare to Stokes parameters in optics?

I remember Stokes parameters as a way to completely define the polarization state of a well-defined beam of light. However several questions here refer to Stokes parameters used in characterizing the ...
uhoh's user avatar
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