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- Title
Approximate analytical description of the high latitude extinction.
- Authors
Nekrasov, Alexei; Grishin, Kirill; Kovaleva, Dana; Malkov, Oleg
- Abstract
The distribution of visual interstellar extinction A V has been mapped in selected areas over the Northern sky, using available LAMOST DR5 and Gaia DR2/EDR3 data. A V was modelled as a barometric function of galactic latitude and distance. The function parameters were then approximated by spherical harmonics. The resulting analytical tridimensional model of the interstellar extinction can be used to predict A V values for stars with known parallaxes, as well as the total Galactic extinction in a given location in the sky.
- Subjects
INTERSTELLAR reddening; LATITUDE; STELLAR parallax; SPHERICAL harmonics
- Publication
European Physical Journal: Special Topics, 2021, Vol 230, Issue 10, p2193
- ISSN
1951-6355
- Publication type
Article
- DOI
10.1140/epjs/s11734-021-00210-0