Spot

class mrspoc.Spot(x=None, y=None, z=None, r=None, contrast=0.7, stellar_radius=1)

Bases: object

Properties of a starspot.

Parameters:

x : float

X position [stellar radii]

y : float

Y position [stellar radii]

z : float

Z position [stellar radii], default is z=sqrt(r_star^2 - x^2 - y^2).

r : float

Spot radius [stellar radii], default is r=1.

contrast : float (optional)

Spot contrast relative to photosphere. Default is c=0.7

stellar_radius : float

Radius of the star, in the same units as x,y,z,r. Default is 1.

Methods Summary

from_latlon(latitude, longitude, …)	Construct a spot from latitude, longitude coordinates
from_sunspot_distribution(stellar_inclination)	Parameters:

Methods Documentation

classmethod from_latlon(latitude, longitude, stellar_inclination, radius)

Construct a spot from latitude, longitude coordinates

Parameters:

latitude : float

Spot latitude [deg]

longitude : float

Spot longitude [deg]

stellar_inclination : float

Stellar inclination angle, measured away from the line of sight, in [deg].

radius : float

Spot radius [stellar radii]

classmethod from_sunspot_distribution(stellar_inclination, mean_latitude=15, contrast=0.7, radius_multiplier=1)

Parameters:

stellar_inclination : float

Stellar inclination angle, measured away from the line of sight, in [deg].

mean_latitude : float

Define the mean absolute latitude of the two symmetric active latitudes, where mean_latitude > 0.

contrast : float (optional)

Spot contrast relative to photosphere. Default is the area-weighted mean sunspot contrast (c=0.7).