On Milne–Barbier–Unsöld relationships
This short review aims to clarify upon the origins of so-called Eddington-Barbier relationships, which relate the emergent specific intensity and the flux to the photospheric source function at specific optical depths. Here we discuss the assumptions behind the original derivation of Barbier (1943)....
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| Format: | Article |
| Language: | English |
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De Gruyter
2018-04-01
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| Series: | Open Astronomy |
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| Online Access: | https://doi.org/10.1515/astro-2018-0018 |