论文标题
基于MASER和无线电星星的银河旋转的研究，其视差测量
Study of the Galactic Rotation Based on Masers and Radio Stars with VLBI Measurements of Their Parallaxes
论文作者
论文摘要
根据已发表的数据，我们制作了256个无线电来源的样本，其三角概差和通过VLBI测量了适当的动作。该样品包含与活性星形成区域中与大量原始恒星和恒星相关的银河系。它还包括来自古尔德皮带地区的年轻低质量恒星，其无线电观测是在连续体中进行的。基于这一点，最完整的迄今为止的来源样本，我们估计了速度$（u，v，w）_ \ odot $和银河旋转$Ω_______________________________^{（1）} _ 0，...，...，...，...，...，...，ω^{（4）} _ 0 $的距离的距离的距离$ r_0 = 8.15^{+0.04} _ { - 0.20} $ kpc。银河螺旋密度波的参数是从径向，$ v_r $的系列中找到的，剩余切向切，$ΔV_{CRICE} $，恒星的速度。径向和切向速度扰动的振幅为$ f_r = 7.0 \ pm0.9 $ km s $ s $^{ - 1} $和$f_θ= 3.8 \ pm1.1 $ km s $ s $^{ - 1} $ $λ_θ= 2.0 \ pm0.4 $ kpc，螺旋密度波中的太阳相位为$（χ_\ odot）_r = -163^\ circ \ circ \ pm9^\ pm9^\ circ $ and $（χ_\ odot）_θ= -137^= -137^\ cird \ cird \ pm10^\ $ cirp $ for for Fours for for Fours for Fours for forter for forter for fours for fours for fours for fours for fours for fours for fours for fours。
Based on published data, we have produced a sample of 256 radio sources whose trigonometric parallaxes and proper motions were measured by VLBI. This sample contains Galactic masers associated with massive protostars and stars in active star-forming regions. It also includes young low-mass stars from the Gould Belt region whose radio observations were performed in continuum. Based on this, most complete sample of sources to date, we have estimated the velocities $(U,V,W)_\odot$ and the parameters of the angular velocity of Galactic rotation $Ω_0, Ω^{(1)}_0, ... , Ω^{(4)}_0$ and obtained a new estimate of the distance fromthe Sun to the Galactic center, $R_0=8.15^{+0.04}_{-0.20}$ kpc. The parameters of the Galactic spiral density wave have been found from the series of radial, $V_R$, and residual tangential, $ΔV_{circ}$, velocities of stars. The amplitudes of the radial and tangential velocity perturbations are $f_R=7.0\pm0.9$ km s$^{-1}$ and $f_θ=3.8\pm1.1$ km s$^{-1}$, the perturbation wavelengths are $λ_R=2.3\pm0.2$ kpc and $λ_θ=2.0\pm0.4$ kpc, and the Sun's phases in the spiral density wave are $(χ_\odot)_R=-163^\circ\pm9^\circ$ and $(χ_\odot)_θ=-137^\circ\pm10^\circ$ for the adopted four-armed spiral pattern.
