Equation of State: Supernovae trace Cosmic Expansion (ESSENCE)¶
The essence
module provides access to data from the Equation of State:
Supernovae trace Cosmic Expansion survey (ESSENCE). It includes spectroscopic
and photometric data published in Foley et al. 2009 and Narayan et al. 2016
respectively.
Data Release | Class Name | Data Type | Publication |
---|---|---|---|
Narayan et al. 2016 | Narayan16 | photometric | Narayan et al. 2016 |
Narayan et al. 2016¶
-
class
sndata.essence.
Narayan16
[source]¶ The
Narayan16
class provides access to photometric data for 213 Type Ia supernovae discovered by the ESSENCE survey at redshifts 0.1 <= z <= 0.81 between 2002 and 2008. It includes R and I band photometry measured from images obtained using the MOSAIC II camera at the CTIO Blanco telescope. (Source: Narayan et al. 2016)- Deviations from the standard UI:
- None
- Cuts on returned data:
- None
-
delete_module_data
() → None¶ Delete any data for the current survey / data release
-
download_module_data
(force: bool = False, timeout: float = 15)¶ Download data for the current survey / data release
Parameters: - force – Re-Download locally available data
- timeout – Seconds before timeout for individual files/archives
-
get_available_ids
() → List[str]¶ Return a list of target object IDs for the current survey
Returns: A list of object IDs as strings
-
get_available_tables
() → List[Union[str, int]]¶ Get Ids for available vizier tables published by this data release
-
get_data_for_id
(obj_id: str, format_table: bool = True) → astropy.table.table.Table¶ Returns data for a given object ID
See
get_available_ids()
for a list of available ID values.Parameters: - obj_id – The ID of the desired object
- format_table – Format data into the
sndata
standard format
Returns: An astropy table of data for the given ID
-
classmethod
get_zp_for_band
(band: str) → str¶ Get the zeropoint for a given band name
Parameters: band – The name of the bandpass
-
iter_data
(verbose: bool = False, format_table: bool = True, filter_func: bool = None) → astropy.table.table.Table¶ Iterate through all available targets and yield data tables
An optional progress bar can be formatted by passing a dictionary of
tqdm
arguments. Outputs can be optionally filtered by passing a functionfilter_func
that accepts a data table and returns a boolean.Parameters: - verbose – Optionally display progress bar while iterating
- format_table – Format data for
SNCosmo
(Default: True) - filter_func – An optional function to filter outputs by
Yields: Astropy tables
-
load_table
(table_id: Union[int, str]) → astropy.table.table.Table¶ Return a Vizier table published by this data release
Parameters: table_id – The published table number or table name
-
register_filters
(force: bool = False)¶ Register filters for this survey / data release with SNCosmo
Parameters: force – Re-register a band if already registered