gc_polr¶
- edge_pydb.conversion.gc_polr(ra, dec, ra_gc, dec_gc, pa, inc, reject=89)[source]¶
Returns galactocentric polar coordinates (radius in arcsec, azimuthal angle in degrees from receding major axis).
- Parameters:
- rafloat or numpy.array
The RA coordinate(s) to transform, in degrees
- decfloat or numpy.array
The DEC coordinate(s) to transform, in degrees
- ra_gcfloat
The RA of the galaxy center, in degrees
- dec_gcfloat
The DEC of the galaxy center, in degrees
- pafloat
The position angle of the galaxy’s receding major axis, in degrees
- incfloat
The inclination of the galaxy disk, in degrees (0 = face-on)
- rejectfloat
Return NaNs for inclinations larger than this (default=89)
- Returns:
- pair of floats or numpy.array [radius, azang]