Source code for gala.coordinates.galactocentric
# Third-party
import astropy.coordinates as coord
import astropy.units as u
__all__ = ['get_galactocentric2019']
[docs]def get_galactocentric2019():
"""
References
----------
Galactic center sky position:
- `Reid & Brunthaler (2004) <https://ui.adsabs.harvard.edu/abs/2004ApJ...616..872R/abstract>`_
Galactic center distance:
- `GRAVITY collaboration (2018) <https://ui.adsabs.harvard.edu/abs/2018A%26A...615L..15G/abstract>`_
Solar velocity:
- `Drimmel & Poggio (2018) <https://ui.adsabs.harvard.edu/abs/2018RNAAS...2d.210D/abstract>`_
- `Reid & Brunthaler (2004) <https://ui.adsabs.harvard.edu/abs/2004ApJ...616..872R/abstract>`_
- `GRAVITY collaboration (2018) <https://ui.adsabs.harvard.edu/abs/2018A%26A...615L..15G/abstract>`_
Solar height above midplane:
- `Bennett & Bovy (2019) <https://ui.adsabs.harvard.edu/abs/2019MNRAS.482.1417B/abstract>`_
Returns
-------
galcen_frame : `~astropy.coordinates.Galactocentric`
The modern (2019) Galactocentric reference frame.
"""
with coord.galactocentric_frame_defaults.set('v4.0'):
galcen = coord.Galactocentric()
return galcen