threeML.catalogs.VirtualObservatoryCatalog module

exception threeML.catalogs.VirtualObservatoryCatalog.ConeSearchFailed[source]

Bases: RuntimeError

class threeML.catalogs.VirtualObservatoryCatalog.VirtualObservatoryCatalog(name, url, description)[source]

Bases: object

apply_format(table)[source]

Searches for sources in a cone of given radius and center

Parameters:

  • ra – decimal degrees, R.A. of the center of the cone

  • dec – decimal degrees, Dec. of the center of the cone

  • radius – radius in degrees

Returns:

a table with the list of sources

property dec_center
get_model()[source]
query(query)[source]

query the entire VO table for the given logical argument. Queries are in the form of pandas queries: http://pandas.pydata.org/pandas-docs/stable/generated/pandas.DataFrame.query.html

To obtain a preview of the availble columns, try catalog.variables

Parameters:

query – pandas style query string

Returns:

query_sources(*sources)[source]

query for the specific source names.

Parameters:

sources – source(s) to search for

Returns:

property ra_center
property result

return a searchable pandas dataframe of results from the last query. :return:

search_around_source(source_name, radius)[source]

Search for sources around the named source. The coordinates of the provided source are resolved using the astropy.coordinates.name_resolve facility.

Parameters:

  • source_name – name of the source, like “Crab”

  • radius – radius of the search, in degrees

Returns:

(ra, dec, table), where ra,dec are the coordinates of the source as resolved by astropy, and table is

a table with the list of sources