20 citations · 20 across the 2 of their papers we have counts for
2 papers
astro-ph.GA2023
Luminosity distance and extinction by submicrometer-sized grains
Ralf Siebenmorgen, Frank Heymann, Rolf Chini
The distance to the stars is a fundamental parameter, which is determined via two primary methods - parallax and luminosity. While the parallax is a direct trigonometric method, th…
astro-ph.SR2012★ 20 cited
PAHs in protoplanetary disks: emission and X-ray destruction
Ralf Siebenmorgen, Frank Heymann
We study the PAH emission from protoplanetary disks. First, we discuss the dependence of the PAH band ratios on the hardness of the absorbed photons and the temperature of the star…