Determination of bolometric albedo based on spectroscopic measurements for selected dust analogues and its impact on the change of cometary brightness during its outburst

Astronomy and Astrophysics, Journal Year: 2024, Volume and Issue: 686, P. A248 - A248

Published: May 1, 2024

The paper presents the results of spectroscopic measurements for selected dust analogues, based on which change in cometary brightness was determined. In first part article, we present laboratory hemispherical albedo analogues using a Cary 5000 spectrometer with an integrating sphere. case this system and tested samples, obtained values ranged from 0.35 ± 0.07% to 41.58 0.07%. measurement were used determine bolometric geometric albedo. For analogue consisting charcoal, Bond equal A B (charcoal) = 2.15%, whereas p v 6.76%. second analytical method allowing us calculate amplitude during outburst. calculations show that upper value is 6.5 magnitudes, within medium range Calculations have shown as increases given agglomerate porosity, temperature decreases, determines smaller sublimation flux, translates into larger brightness.

Language: Английский

Two methods for determining the temperature on the surface of the cometary nucleus based on spectroscopic measurements

Planetary and Space Science, Journal Year: 2024, Volume and Issue: unknown, P. 106027 - 106027

Published: Dec. 1, 2024

Language: Английский