get_line_wavelengths

grizli.utils.get_line_wavelengths()[source]

Get a dictionary of common emission line wavelengths and line ratios

Returns:
line_wavelengths, line_ratios : dict

Keys are common to both dictionaries and are simple names for lines and line complexes. Values are lists of line wavelengths and line ratios.

>>> from grizli.utils import get_line_wavelengths
>>> line_wavelengths, line_ratios = get_line_wavelengths()
>>> print(line_wavelengths['Ha'], line_ratios['Ha'])
[6564.61] [1.0]
>>> print(line_wavelengths['OIII'], line_ratios['OIII'])
[5008.24, 4960.295] [2.98, 1]

Includes some additional combined line complexes useful for redshift fits:

>>> from grizli.utils import get_line_wavelengths
>>> line_wavelengths, line_ratios = get_line_wavelengths()
>>> key = 'Ha+SII+SIII+He'
>>> print(line_wavelengths[key], '\n', line_ratios[key])
[6564.61, 6718.29, 6732.67, 9068.6, 9530.6, 10830.0]
[1.0, 0.1, 0.1, 0.05, 0.122, 0.04]