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19942022
most citedA Comprehensive Measurement of the Local Value of the Hubble Constant with 1 km/s/Mpc Uncertainty from the Hubble Space Telescope and the SH0ES Team

2.3k citations · 11.6k across the 140 of their papers we have counts for

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Showing 1998Show all

2 papers · 1 filter

astro-ph1998★ 54 cited

The Very Highly Ionized Broad Absorption Line System of the QSO SBS1542+541

Randal C. Telfer, Gerard A. Kriss, Wei Zheng +2

We have analyzed the broad absorption line system of the bright (V=16.5) high-redshift (z=2.361) QSO SBS1542+541 using UV spectra from the HST FOS along with optical data from the…

astro-ph1998★ 2 cited

Ly-alpha/H-alpha Ratio of Singly Ionized Helium in Quasars

Wei Zheng, Li-Zhi Fang

He II Ly-alpha 304/H-alpha 1640 emission lines are mainly produced by recombination, and their canonical ratio of about 10 may be a sensitive reddening indicator. We obtain the hig…