Questions tagged [gaia]
Questions about the space observatory GAIA.
13
questions with no upvoted or accepted answers
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Why is it hard to reconcile Gaia DR2 with the HIP data set
I'm trying to get a database of about 20 million of the brightest stars in the sky for a project I'm working on, and I want to reconcile it with the Hipparcos data set. Currently, I'm only using the ...
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A question about using both the Simbad and the Gaia archive
It seems a bunch of people, including myself, have got it into our heads to create a 3D visualisation of the stars around us - one where you get to fly around them rather than view them from the ...
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Computing the sky coordinates using astropy
I need your help with an error I have been receiving while trying to obtain the sky coordinates using astropy module in python.
The code looks like the following,
...
- 143
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Did Gaia DR3 help figure out whether Albireo is an optical double?
Based on the Wikipedia page of Albireo, Gaia DR2 had too much noise to determine whether the stars are physically associated or if they are just an optical double. Gaia DR3 was released last year. ...
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How to calculate the various properties of a star?
I am wanting to plot a velocity profile (a plot of velocity against the star's distance from the galactic core) from the Gaia DR2, but so far my efforts have been disappointing.
The information I ...
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Open cluster membership determination via parallaxes
I'm working in my final course project and I'm using the recently released GAIA DR2 data. I want to determine open clusters membership and I know this has mainly been done using proper motions and ...
- 121
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145
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Relationships between G magnitude, Johnson V magnitude, and spectral type of stars?
I'm simulating a population of binary stars for a summer research project. I'm adding uncertainties to my simulated observables such as angular position and radial (line of sight) velocity. I'm using ...
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563
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Query with Gaia: I have a list of 1000+ source_id's. How do I find the associated stars and their data?
I have a table of around 1700 source id's from gaiadr2 (in csv format). I would like to see the data that Gaia has for each star in a new table. I'm really struggling to figure out how to do this ...
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How to explain tidal tails and dark matter sub-halos in simple terms?
There is the exciting news by ESA entitled Is the nearest star cluster to the Sun being destroyed?
Data from ESA’s Gaia star mapping satellite have revealed tantalising evidence that the nearest ...
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Plotting GAIA barycentric radial velocity data with python
Does anybody know of a good tutorial on how to use python and astropy to generate plots of GAIA, RAVE or any other database of barycentric (heliocentric) radial velocity data of stars in our galaxy?
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What a grating on GAIA RVS spectroscope?
What size of the grating on GAIA RVS spectroscope ?
How many lines on mm, or what defraction angle for 850 nm wavelenth light ?
I find some more details here: http://sci.esa.int/gaia/44092-gaia-rvs-...
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Photometry data from Gaia
I am trying to get data from Gaia. Especially for Cepheids or RR Lyrae. On Gaia websites it say they have released some of the data however I cannot find it. I am looking for two columns with time and ...
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Why can't ESA/NASA build a handful of Gaia telescopes and launch them into different positions in space for better accuracy?
I've noticed that many stars in GAIA DR2 have highly uncertain distances. Why can't a space agency send multiple Gaia spacecraft into orbit around different places (One in L2 Earth, one in ...
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