webbpsf_ext.spectra.companion_spec

webbpsf_ext.spectra.companion_spec(bandpass, model='SB12', atmo='hy3s', mass=10, age=100, entropy=10, dist=10, accr=False, mmdot=None, mdot=None, accr_rin=2, truncated=False, sptype=None, renorm_args=None, Av=0, **kwargs)[source]

Determine flux (ph/sec) of a companion

Add exoplanet information that will be used to generate a point source image using a spectrum from Spiegel & Burrows (2012).

Coordinate convention is for +N up and +E to left.

Parameters

  • bandpass (pysynphot.obsbandpass) – A Pysynphot bandpass object.

  • model (str) – Exoplanet model to use (‘sb12’, ‘bex’, ‘cond’) or stellar spectrum model (‘bosz’, ‘ck04models’, ‘phoenix’).

  • atmo (str) – A string consisting of one of four atmosphere types: [‘hy1s’, ‘hy3s’, ‘cf1s’, ‘cf3s’].

  • mass (int) – Number 1 to 15 Jupiter masses.

  • age (float) – Age in millions of years (1-1000).

  • entropy (float) – Initial entropy (8.0-13.0) in increments of 0.25

  • sptype (str) – Instead of using a exoplanet spectrum, specify a stellar type.

  • renorm_args (dict) – Pysynphot renormalization arguments in case you want very specific luminosity in some bandpass. Includes (value, units, bandpass).

  • dist (float) – Distance in pc.

  • Av (float) – Extinction magnitude (assumes Rv=4.0) of the companion (e.g., due to being embedded in a disk).

  • accr (bool) – Include accretion? default: False

  • mmdot (float) – From Zhu et al. (2015), the Mjup^2/yr value. If set to None then calculated from age and mass.

  • mdot (float) – Or use mdot (Mjup/yr) instead of mmdot.

  • accr_rin (float) – Inner radius of accretion disk (units of RJup; default: 2)

  • truncated (bool) – Full disk or truncated (ie., MRI; default: False).