Albedo of an irradiated plane-parallel atmosphere with finite optical depth

• FUKUE, Jun

Abstract

type:Article

We analytically derive albedo for a plane-parallel atmosphere with finite optical depth, irradiated by an external source, under the local thermodynamic equilibrium approximation. Albedo is expressed as a function of the photon destruction probability ε and optical depth τ, with several parameters such as dilution factors of the external source. In the particular case of the infinite optical depth, albedo A is expressed as A=[1+(1-WJ/WH)3ε--√/3]/(1+3ε--√)⁠, where WJ and WH are the dilution factors for the mean intensity and Eddington flux, respectively. An example of a model atmosphere is also presented under a gray approximation.

Journal

• PASJ:Publications of the Astronomical Society of Japan

  PASJ:Publications of the Astronomical Society of Japan 70 (2), 25-1-25-9, 2018-02-07

  Oxford University Press

Keywords

• accretion, accretion disks
• planets and satellites: atmospheres
• protoplanetary disks
• radiative transfer
• stars: atmospheres

Details

• CRID: 1050006973328219008
• NII Article ID: 120007052956
• NII Book ID: AA1082896X
• ISSN: 00046264
• Web Site: http://ir.lib.osaka-kyoiku.ac.jp/dspace/handle/123456789/32005
• Text Lang: en
• Article Type: journal article
• Data Source:
  • IRDB
  • CiNii Articles