Class: BinaryModelAngular
Bases: SourceModel
A primary star and a point-source companion, in polar coordinates.
Parameters:
| Name | Type | Description | Default |
|---|---|---|---|
sep
|
float or array - like
|
On-sky separation in milliarcseconds. |
required |
pa
|
float or array - like
|
Position angle in degrees, measured East of North. |
required |
flux
|
float or array - like
|
Companion/primary flux ratio (e.g. 0.01 for a companion 100 times
fainter, i.e. contrast 100 or 5 mag; see
|
required |
Notes
Equivalent to BinaryModelCartesian
at dra = sep sin(pa), ddec = sep cos(pa); convenient for
reporting astrometry directly in separation and position angle.
__init__(sep, pa, flux)
to_cartesian()
Return the equivalent BinaryModelCartesian.
model(u, v, wavel)
Complex visibilities on baselines u, v (m) at wavel (m).