The Hubble Constant from Infrared Surface Brightness Fluctuation Distances*
The Hubble Constant from Infrared Surface Brightness Fluctuation Distances*
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DOI：
10.3847/1538-4357/abe86a
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发表时间：
2021-04-01
影响因子：
4.9
通讯作者：
Greene, Jenny E.
中科院分区：
文献类型：
--
作者：
Blakeslee, John P.;Jensen, Joseph B.;Greene, Jenny E.
利用哈勃空间望远镜（HST）上的WFC 3/IR对63个亮度在100 Mpc以内的亮星系（主要是早型星系）进行了表面亮度涨落（SBF）距离测量，给出了哈勃常数H（0）的测量结果。该样本是从几个独立的HST成像程序使用F110 W带通，与大部分的星系被选定的大规模调查。这些距离到达哈勃流时，每次测量的统计不确定性中值为4%。我们用这些红外SBF距离构建哈勃图，并使用四种不同的星系速度处理来约束H（0）。对于SBF零点校准，我们使用现有的领带造父变星，更新的一致性与最新确定的距离大麦哲伦云从分离食双星，和一个新的领带的尖端红巨星分支（TRGB）校准的脉泽距离NGC 4258。这两个SBF校准是相互一致的，并与恒星人口模型的理论预测。根据造父变星和TRGB校准的加权平均值，我们得出H（0）= 73.3 +/- 0.7 +/- 2.4 km s（-1）Mpc（-1），其中误差条反映了统计和系统的不确定性。这一结果与最近对Ia型超新星、多透镜类星体和水脉泽的时间延迟的测量结果吻合得很好。系统的不确定性可以降低到2%以下，通过校准的SBF方法与精确TRGB距离的统计样本的大规模早期型星系的处女座星系团测量的詹姆斯韦伯太空望远镜。
We present a measurement of the Hubble constant H (0) from surface brightness fluctuation (SBF) distances for 63 bright, mainly early-type galaxies out to 100 Mpc observed with the WFC3/IR on the Hubble Space Telescope (HST). The sample is drawn from several independent HST imaging programs using the F110W bandpass, with the majority of the galaxies being selected from the MASSIVE survey. The distances reach the Hubble flow with a median statistical uncertainty per measurement of 4%. We construct the Hubble diagram with these IR SBF distances and constrain H (0) using four different treatments of the galaxy velocities. For the SBF zero-point calibration, we use both the existing tie to Cepheid variables, updated for consistency with the latest determination of the distance to the Large Magellanic Cloud from detached eclipsing binaries, and a new tie to the tip of the red giant branch (TRGB) calibrated from the maser distance to NGC 4258. These two SBF calibrations are consistent with each other and with theoretical predictions from stellar population models. From a weighted average of the Cepheid and TRGB calibrations, we derive H (0) = 73.3 +/- 0.7 +/- 2.4 km s(-1) Mpc(-1), where the error bars reflect the statistical and systematic uncertainties. This result accords well with recent measurements of H (0) from Type Ia supernovae, time delays in multiply lensed quasars, and water masers. The systematic uncertainty could be reduced to below 2% by calibrating the SBF method with precision TRGB distances for a statistical sample of massive early-type galaxies out to the Virgo cluster measured with the James Webb Space Telescope.