Publication Details:
Journal or Publication Title:
Աստղաֆիզիկա = Астрофизика = Astrophysics
Date of publication:
Volume:
Number:
ISSN:
Official URL:
Additional Information:
Караченцев И. Д., Назарова А. Е., Караченцева В. Е.
Title:
Large diffuse dwarfs in the dynamically cold triple galaxy systems
Other title:
Большие диффузные карлики в динамически холодных тройных системах галактик
Creator:
Karachentsev, I. D. ; Nazarova, E. A. ; Karachentseva, V. E.
Contributor(s):
Գլխավոր խմբ․՝ Վ․ Հ․ Համբարձումյան (1965-1987) ; Լ․ Վ․ Միրզոյան (1988-1999) ; Դ․ Մ․ Սեդրակյան (2000-2017) ; Ա․ Գ․ Նիկողոսյան (2018-)
Subject:
Uncontrolled Keywords:
dwarf galaxies ; low surface brightness galaxies
Coverage:
Abstract:
We report on the discovery of three large diffuse dwarf (LDD) galaxies located in isolated triple systems. They have effective diameters of 3.6 ÷10.0 kpc and effective surface brightness of 26.2 ÷ 27.3 m/sq. arcsec. We note that the LDD galaxies tend to occur in small groups with a very low dispersion of radial velocities. The total (orbital) mass of the triplets approximately equals to their integral stellar mass within velocity measurement errors. The presence of LDD galaxies in cold multiple systems seems mysterious.
Place of publishing:
Երևան