astroquery:docs

Besancon Queries (astroquery.besancon)

Getting started

The following example illustrates an Besancon catalog/image query. The API describes the relevant keyword arguments (of which there are many)

>>> from astroquery import besancon
>>> # besancon_model = besancon.request_besancon('your@email.net',10.5,0.0)
>>> import astropy.io.ascii as asciitable
>>> from astropy.io.ascii import besancon as besancon_reader
>>> B = asciitable.read(besancon_model,Reader=besancon_reader.BesanconFixed,guess=False)
>>> B.pprint()

A successful run should look something like this

>>> besancon_model = request_besancon('your@email.net',10.5,0.0)

Waiting 30s for model to finish (elapsed wait time 30s, total 32)
Loading page...
Waiting 30s for model to finish (elapsed wait time 60s, total 198)
Loading page...
Waiting 30s for model to finish (elapsed wait time 90s, total 362)
Loading page...
Waiting 30s for model to finish (elapsed wait time 120s, total 456)
Loading page...
Downloaded        74752 of     11029183 bytes (  0.68%)

>>> # B.pprint()
 Dist  Mv   CL Typ   LTef logg Age Mass  J-K   J-H   V-K    H-K    K    [Fe/H]   l     b     Av   Mbol
----- ---- --- ---- ----- ---- --- ---- ----- ----- ------ ----- ------ ------ ----- ----- ----- ------
 0.87 12.5   5  7.5 3.515 4.99   5 0.24 0.966 0.649  5.408 0.318  17.44  -0.02 10.62 -0.38 0.637 10.844
 0.91 13.0   5  7.5 3.506 5.03   1 0.21 0.976 0.671  5.805 0.305 17.726   0.13 10.62 -0.38 0.669 11.312
 0.97 18.5   5  7.9  3.39 5.32   7 0.08 0.804 0.634  8.634  0.17 20.518  -0.46 10.62 -0.38 0.716    0.0
 1.01 15.2   5  7.9 3.465 5.14   1 0.13 1.045 0.649  7.015 0.396 18.957   0.22 10.62 -0.38 0.748 13.353
 1.01 16.5   5  7.8 3.435 5.27   5 0.09 1.024 0.701  7.545 0.323 19.642  -0.09 10.62 -0.38 0.748    0.0
 1.03 17.0   5 7.85 3.424 5.29   1 0.09 1.133 0.701  8.132 0.432 19.631   0.07 10.62 -0.38 0.764    0.0
 1.09 13.5   5  7.6 3.497 5.05   7 0.18 0.995  0.69  5.829 0.305 18.629  -0.43 10.62 -0.38 0.812  11.78
 1.17 13.7   5 7.65 3.493  5.0   2 0.17 1.025  0.68  6.319 0.345 18.552    0.2 10.62 -0.38 0.876 11.948
 1.17 18.5   5  7.9  3.39 5.32   5 0.08 0.927  0.69  8.876 0.237 20.763  -0.27 10.62 -0.38 0.876    0.0
 1.25 20.0   5  7.9 3.353 5.36   3 0.08 1.533 0.883 10.202  0.65 21.215   0.15 10.62 -0.38 0.941    0.0
 1.29  9.3   5  7.1  3.58 4.74   2 0.56 0.997 0.777  4.592 0.219 16.263   0.21 10.62 -0.38 0.974  7.834
 1.29 13.5   6  9.0 3.853  8.0   7  0.6 0.349 0.283  1.779 0.066 23.266  -0.17 10.62 -0.38 0.974    0.0
 1.33  6.9   5  6.4 3.656 4.62   5 0.77 0.857  0.69  3.604 0.167 14.889   0.25 10.62 -0.38 1.006  5.795
 1.35  7.5   5  6.5 3.633 4.62   5  0.7 0.902 0.729  3.885 0.172  15.22   0.08 10.62 -0.38 1.023  6.225
  ...  ... ...  ...   ...  ... ...  ...   ...   ...    ...   ...    ...    ...   ...   ...   ...    ...
40.19 17.1   6  9.0 3.515 8.19   9  0.7 2.013 1.481 11.166 0.532 35.816  -1.99 10.62 -0.38  11.8    0.0
41.01 17.1   6  9.0 3.515 8.19   9  0.7 2.013 1.481 11.166 0.532 35.899  -2.14 10.62 -0.38  11.8    0.0
41.21 17.3   6  9.0 3.485 8.19   9  0.7 1.933 1.471 10.826 0.462 36.312  -1.36 10.62 -0.38  11.8    0.0
41.41 16.9   6  9.0 3.542 8.19   9  0.7 1.893 1.301 11.436 0.592 35.358  -0.92 10.62 -0.38  11.8    0.0
41.87 16.7   6  9.0 3.568 8.19   9  0.7 1.783 1.141 11.686 0.642 34.917  -1.79 10.62 -0.38  11.8    0.0
42.05 16.7   6  9.0 3.568 8.19   9  0.7 1.783 1.141 11.686 0.642 34.936  -2.06 10.62 -0.38  11.8    0.0
44.19 16.9   6  9.0 3.542 8.19   9  0.7 1.893 1.301 11.436 0.592 35.494  -3.04 10.62 -0.38  11.8    0.0
45.39 17.3   6  9.0 3.485 8.19   9  0.7 1.933 1.471 10.826 0.462 36.497  -1.28 10.62 -0.38  11.8    0.0
46.01 18.5   6  9.0 3.297 8.19   9  0.7 0.813 1.381  8.016 0.568 40.611  -2.01 10.62 -0.38  11.8    0.0
46.71 16.7   6  9.0 3.568 8.19   9  0.7 1.783 1.141 11.686 0.642 35.087  -2.59 10.62 -0.38  11.8    0.0
46.97 17.9   6  9.0 3.389 8.19   9  0.7 1.233 1.161  9.536 0.072 38.563  -1.42 10.62 -0.38  11.8    0.0
47.45 17.3   6  9.0 3.485 8.19   9  0.7 1.933 1.471 10.826 0.462 36.579  -2.25 10.62 -0.38  11.8    0.0
48.05  5.2   5 4.82 3.786 4.54   9 0.74  2.42 1.563 11.919 0.857 23.548  -1.45 10.62 -0.38  11.8   5.08
49.39 16.9   6  9.0 3.542 8.19   9  0.7 1.893 1.301 11.436 0.592 35.813  -1.19 10.62 -0.38  11.8    0.0

Note

These tests are commented out (and will fail) because I don’t want to put unnecessary strain on the Besancon servers by running queries every time we test. Also I think the example must be wrong.

Reference/API

astroquery.besancon Module

Besancon Query Tool

A tool to query the Besancon model of the galaxy http://model.obs-besancon.fr/

Author:Adam Ginsburg (adam.g.ginsburg@gmail.com)

Classes

Besancon([email])
BesanconFixed([col_starts, col_ends, ...]) Read data from a Besancon galactic model table file.
BesanconFixedWidthHeader()
BesanconFixedWidthData()