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
To determine the peculiar velocities of galaxy clusters relative to the Hubble Flow, we need to measure the distances of galaxy systems using some method that is sensitive to their distances. The fundamental plane (FP) of early-type galaxies is one such method and is widely used for such problems. Using the FP, we determined the angular distances of 140 groups and galaxy clusters in the local Universe ($z<$ 0.15) and constructed a Hubble diagram between distances and radial velocities in the CMB reference frame in the framework of the flat $\Lambda$CDM model ($\Omega_{\rm m}=0.3$, $H_0=70$ km s$^{-1}$ Mpc$^{-1}$). We obtained the average deviation of the relative distances $\gamma$ from the Hubble dependence for this model $\langle\Delta \gamma\rangle$=$-0.0066\pm0.0023$ ($N$ = 140). The minimum deviation we found corresponds to the value of the Hubble constant $71.1$ km s$^{-1}$ Mpc$^{-1}$. We found that the logarithmic standard scatter of the relative distances of groups and clusters of galaxies on the Hubble diagram (subtracting peculiar velocities) is $\pm0.0173$ ($N$ = 140), which corresponds to the deviation of the Hubble constant $71.1\pm2.8$ km s$^{-1}$ Mpc$^{-1}$. For a sample of galaxy clusters ($N$ = 63) with X-ray luminosity in the range (0.15–4)$\times10^{44}$ erg/s, we obtained $71.1\pm2.1$ km s$^{-1}$~Mpc$^{-1}$.
galaxies: clusters, elliptical and lenticular, fundamental parameters, distances and redshifts; cosmology: large-scale structure of universe
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