Questions tagged [sloan-dss]

The tag has no usage guidance.

Filter by
Sorted by
Tagged with
1
vote
0answers
45 views

Q: Calculating the luminosity of a galaxy

I am currently working on a project on which I am calculating the luminosity of galaxies by using the SDSS data. They use a system of asinh magnitudes, and according to their website they use a system ...
1
vote
0answers
30 views

Error associated with Sersic Profile calculations?

I am working on a Bayesian analysis project for class using data I gathered some data from NASA's Sloan Atlas (http://www.nsatlas.org/). One of the variables I am dealing with is the Sérsic Index (...
1
vote
1answer
147 views

What (actually) does “peculiar periodic spectral modulations” refer to in this preprint?

I saw this ArXiv preprint after reading about it in the popular media. I can not even understand the beginning of the introduction (much less the whole paper): INTRODUCTION A Fourier ...
1
vote
0answers
261 views

Sloan Digital Sky Survey (SDSS) HDU `or_mask` - what does it mean exactly?

I'm looking at the Sloan Digital Sky Survey data. I'm primarily using the flux data, from the documentation I see the first extend (HDU 1) has flux, ...
1
vote
1answer
116 views

Are 3D coordinate data from Sloan DSS-III available & easily accessible to non-pros?

Of course the newly announced SDSS-III data and maps from the Sloan Digital Sky Survey with 1.2 million objects, along with all previous data sets are openly available, and I'm sure there are many ...