Gaia Lightcurve¶

The following module explains all the functions available as part of GaiaCurves

gaia_lightcurve.fetch_curves(starList, output_dir='../data/', ignore=None)¶

Fetch Gaia Lightcurves for a list of variable stars from Gaia DR2 and DR1 Sources

Returns a dictionary of Gaia IDs, saved photometric CSV paths, and sources for all the given variable star names

Parameters

starList (list) – List of strings. Variable star names (Cepheids and RRLyrae stars) to fetch lightcurves from Gaia
[output_dir] (string) – Optional. String. By default, the csv files for the lightcurves are stored in the folder ../data/. To change the default path, enter a new path for the folder to save the lightcurve
[ignore] (string) – Optional. String. Takes values None, DR1 and DR2. By default, the lightcurves are downloaded from both DR2 and DR1. To change ignore a source, specify DR1 or DR2.

Returns

Dictionary. Gives back the path/to/lightcurve/filename.csv as pathname, Gaia ID as id, and DR1 or DR2 as source for star names as Keys.

gaia_lightcurve.fetch_lightcurve_dr1(gaia_id, output_dir='../data/')¶

Fetch Gaia Lightcurve for a Gaia Source ID (of a variable star) from Gaia DR1 Table (phot_variable_time_series_gfov)

Returns path of csv file stored for given source

Parameters

gaia_id (string) – String. Gaia Source ID of the variable star you need to fetch the lightcurve from DR1 for
[output_dir] (string) – Optional. String. By default, the csv files for the lightcurves are stored in the folder ../data/. To change the default path, enter a new path for the folder to save the lightcurve

Returns

String. Gives back the path/to/lightcurve/filename.csv where the lightcurve is stored. Returns empty string if no lightcurve is fetched.

gaia_lightcurve.fetch_lightcurve_dr2(gaia_id, output_dir='../data/')¶

Fetch Gaia Lightcurve for a Gaia Source ID (of a variable star) from Gaia DR2 Data Link

Returns path of csv file stored for given source

Parameters

gaia_id (string) – String. Gaia Source ID of the variable star you need to fetch the lightcurve from DR1 for
[output_dir] (string) – Optional. String. By default, the csv files for the lightcurves are stored in the subfolder data/. To change the default path, enter a new path for the folder to save the lightcurve

Returns

String. Gives back the path/to/lightcurve/filename.csv where the lightcurve is stored. Returns empty string if no lightcurve is fetched.

gaia_lightcurve.gaia_id(obj_name)¶

Get Gaia ID for an object

Returns Gaia id for objects available in SIMBAD

Parameters: obj_name (string) – String. Reference name of objects available in the SIMBAD catalog that we need the Gaia ID for.
Returns: String. Gives back the Gaia ID of the object. Returns empty string if Gaia ID could not be fetched.

gaia_lightcurve.plot_lightcurve(csv_path, star, id)¶

Plot the Gaia light curve for a given .csv file generated by fetch_curves function.

Parameters

Returns

None