MASS OF THE ANDROMEDA GALAXY ON A SCALE OF UP TO 300 KPC
Section: PHYSICS OF GALAXIES AND COSMOLOGY
Authors:
1.
Kazan Federal University
2.
Special Astrophysical Observatory of the Russian Academy of Sciences
3.
Special Astrophysical Observatory of the Russian Academy of Sciences
Type:
Сonference article
Published:
27.12.2024
Subject area:
UDK 52 Астрономия. Геодезия
UDK 53 Физика
UDK 520 Инструменты, приборы и методы астрономических наблюдений, измерений и анализа
UDK 521 Теоретическая астрономия. Небесная механика. Фундаментальная астрономия. Теория динамической и позиционной астрономии
UDK 523 Солнечная система
UDK 524 Звезды и звездные системы. Вселенная Солнце и Солнечная система
UDK 52-1 Метод изучения
UDK 52-6 Излучение и связанные с ним процессы
GRNTI 41.00 АСТРОНОМИЯ
GRNTI 29.35 Радиофизика. Физические основы электроники
GRNTI 29.31 Оптика
GRNTI 29.33 Лазерная физика
GRNTI 29.27 Физика плазмы
GRNTI 29.05 Физика элементарных частиц. Теория полей. Физика высоких энергий
OKSO 03.06.01 Физика и астрономия
OKSO 03.05.01 Астрономия
OKSO 03.04.03 Радиофизика
BBK 2 ЕСТЕСТВЕННЫЕ НАУКИ
BBK 223 Физика
TBK 614 Астрономия
TBK 6135 Оптика
BISAC SCI004000 Astronomy
BISAC SCI005000 Physics / Astrophysics
UDK 53 Физика
UDK 520 Инструменты, приборы и методы астрономических наблюдений, измерений и анализа
UDK 521 Теоретическая астрономия. Небесная механика. Фундаментальная астрономия. Теория динамической и позиционной астрономии
UDK 523 Солнечная система
UDK 524 Звезды и звездные системы. Вселенная Солнце и Солнечная система
UDK 52-1 Метод изучения
UDK 52-6 Излучение и связанные с ним процессы
GRNTI 41.00 АСТРОНОМИЯ
GRNTI 29.35 Радиофизика. Физические основы электроники
GRNTI 29.31 Оптика
GRNTI 29.33 Лазерная физика
GRNTI 29.27 Физика плазмы
GRNTI 29.05 Физика элементарных частиц. Теория полей. Физика высоких энергий
OKSO 03.06.01 Физика и астрономия
OKSO 03.05.01 Астрономия
OKSO 03.04.03 Радиофизика
BBK 2 ЕСТЕСТВЕННЫЕ НАУКИ
BBK 223 Физика
TBK 614 Астрономия
TBK 6135 Оптика
BISAC SCI004000 Astronomy
BISAC SCI005000 Physics / Astrophysics
Language:
English
Keywords:
galaxies: kinematics and dynamics, Local Group, dwarf
Abstract (English):
By analysing the kinematics of the satellites of giant galaxies, it is possible to estimate the total mass of systems within 300 kpc. The Andromeda Galaxy (M 31) is the closest giant galaxy with a well known three-dimensional satellite system. Estimating its total mass is extremely important for understanding the halo distribution of dark matter, as well as for studying the kinematics and dynamics of the Local Group of galaxies. In this work we use the improvement of the projected mass method to take into account the three-dimensional distribution of the satellites, which allows us to obtain more reliable and accurate estimates of the total mass of the system. Using a sample of 29 satellites with precise distance measurements and radial velocities, we estimate the total mass of M 31 to be $M = (1.7\pm0.4) \times 10^{12}$ $M_{\odot}$ on a scale of 300 kpc. This result is in good agreement with the work of other studies.
By analysing the kinematics of the satellites of giant galaxies, it is possible to estimate the total mass of systems within 300 kpc. The Andromeda Galaxy (M 31) is the closest giant galaxy with a well known three-dimensional satellite system. Estimating its total mass is extremely important for understanding the halo distribution of dark matter, as well as for studying the kinematics and dynamics of the Local Group of galaxies. In this work we use the improvement of the projected mass method to take into account the three-dimensional distribution of the satellites, which allows us to obtain more reliable and accurate estimates of the total mass of the system. Using a sample of 29 satellites with precise distance measurements and radial velocities, we estimate the total mass of M 31 to be $M = (1.7\pm0.4) \times 10^{12}$ $M_{\odot}$ on a scale of 300 kpc. This result is in good agreement with the work of other studies.
Keywords:
galaxies: kinematics and dynamics, Local Group, dwarf
galaxies: kinematics and dynamics, Local Group, dwarf
1. Bahcall J. and Tremaine S., 1981, The Astrophysical Journal, 244, p. 805
2. Veljanoski J., Ferguson A., Mackey A., et al., 2013, The Astrophysical Journal Letters, 768, id. L33
3. Watkins L., Evans N., An J.H., 2010, Monthly Notices of the Royal Astronomical Society, 406, p. 264
