Open AccessDetermination of interstellar extinction parameters at high galactic latitudes
Author(s) -
Aleksandra Avdeeva,
Д. А. Ковалева,
O. Yu. Malkov,
A. D. Nekrasov
Publication year - 2022
Publication title -
astronomy at the epoch of multimessenger studies. proceedings of the vak-2021 conference, aug 23–28, 2021
Language(s) - English
Resource type - Conference proceedings
DOI - 10.51194/vak2021.2022.1.1.179
Subject(s) - sky , extinction (optical mineralogy) , physics , latitude , stars , astrophysics , astronomy , interstellar medium , galaxy , optics
The distribution of visual interstellar extinction A V has been mapped in selected areas over the Southern sky, using RAVEDR6 and Gaia EDR3 data. A V was modelled as a barometric function of galactic latitude and distance. The functionparameters were then approximated by spherical harmonics. The resulting analytical 3D model of the interstellar extinctioncan be used to predict A V values for stars with known parallaxes, as well as the total Galactic extinction in a given locationin the sky.