USING UBVRI-PHOTOMETRY TO DETECT SIGNS OF ASTEROID ACTIVITY
Authors:
1.
Sternberg Astronomical Institute, Moscow State University
Institute of Astronomy (INASAN)
Institute of Astronomy (INASAN)
2.
Lomonosov Moscow State University
Institute of Astronomy (INASAN) RAS
Russian Federation
Institute of Astronomy (INASAN) RAS
Russian Federation
Type:
Сonference article
Published:
27.12.2024
Subject area:
UDC 52
UDC 53
UDC 520
UDC 521
UDC 523
UDC 524
UDC 52-1
UDC 52-6
CSCSTI 41.00
CSCSTI 29.35
CSCSTI 29.31
CSCSTI 29.33
CSCSTI 29.27
CSCSTI 29.05
Russian Classification of Professions by Education 03.06.01
Russian Classification of Professions by Education 03.05.01
Russian Classification of Professions by Education 03.04.03
Russian Library and Bibliographic Classification 2
Russian Library and Bibliographic Classification 223
Russian Trade and Bibliographic Classification 614
Russian Trade and Bibliographic Classification 6135
BISAK SCI004000 Astronomy
BISAK SCI005000 Physics / Astrophysics
UDC 53
UDC 520
UDC 521
UDC 523
UDC 524
UDC 52-1
UDC 52-6
CSCSTI 41.00
CSCSTI 29.35
CSCSTI 29.31
CSCSTI 29.33
CSCSTI 29.27
CSCSTI 29.05
Russian Classification of Professions by Education 03.06.01
Russian Classification of Professions by Education 03.05.01
Russian Classification of Professions by Education 03.04.03
Russian Library and Bibliographic Classification 2
Russian Library and Bibliographic Classification 223
Russian Trade and Bibliographic Classification 614
Russian Trade and Bibliographic Classification 6135
BISAK SCI004000 Astronomy
BISAK SCI005000 Physics / Astrophysics
Language:
English
Keywords:
methods: observational; techniques: photometric; asteroids: active asteroids
Abstract (English):
This paper focuses on the application of UBVRI-photometry to detect signs of sublimation-dust activity in Main Belt asteroids. Survey observations have been conducted at the Caucasian Mountain Observatory of Moscow State University since 2021, using the RC600 telescope, which has provided data for 133 asteroids. Special attention is given to primitive-type asteroids (with low-temperature mineralogy), many of which may still retain water ice in their interiors. Numerical models of light reflection by active C-type asteroids with a dust exosphere have confirmed spectral differences depending on particle composition. A qualitative criterion for the activity of a primitive asteroid was established, based on the occurrence of a negative gradient in its reflection spectrum in an active state due to ice sublimation and the formation of a dust exosphere. As a result of observations and data analysis, spectral signs of dust activity were detected in 14 primitive asteroids, confirming the effectiveness of the method used.
This paper focuses on the application of UBVRI-photometry to detect signs of sublimation-dust activity in Main Belt asteroids. Survey observations have been conducted at the Caucasian Mountain Observatory of Moscow State University since 2021, using the RC600 telescope, which has provided data for 133 asteroids. Special attention is given to primitive-type asteroids (with low-temperature mineralogy), many of which may still retain water ice in their interiors. Numerical models of light reflection by active C-type asteroids with a dust exosphere have confirmed spectral differences depending on particle composition. A qualitative criterion for the activity of a primitive asteroid was established, based on the occurrence of a negative gradient in its reflection spectrum in an active state due to ice sublimation and the formation of a dust exosphere. As a result of observations and data analysis, spectral signs of dust activity were detected in 14 primitive asteroids, confirming the effectiveness of the method used.
Keywords:
methods: observational; techniques: photometric; asteroids: active asteroids
methods: observational; techniques: photometric; asteroids: active asteroids
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