activity
20192026
most citedThe CosmoVerse White Paper: Addressing observational tensions in cosmology with systematics and fundamental physics

299 citations · 479 across the 20 of their papers we have counts for

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Showing astro-ph.GAShow all

5 papers · 1 filter

astro-ph.GA2026

CHASE Spectral Survey I: Measuring Contamination in the Color-selected J-region Asymptotic Giant Branch Distance Indicator

Siyang Li, Alexei V. Filippenko, Arief Ahmad +11

The J-region asymptotic giant branch (JAGB) method for distance measurements uses the near uniform luminosity of carbon-rich AGB stars as a standard candle. Its application rests o…

astro-ph.GA2024

The Hubble constant anchor galaxy NGC 4258: metallicity and distance from blue supergiants

Rolf-Peter Kudritzki, Miguel A. Urbaneja, Fabio Bresolin +5

A quantitative spectroscopic study of blue supergiant stars in the Hubble constant anchor galaxy NGC 4258 is presented. The non-LTE analysis of Keck I telescope LRIS spectra yields…

astro-ph.GA2023★ 11 cited

Standardized Luminosity of the Tip of the Red Giant Branch utilizing Multiple Fields in NGC 4258 and the CATs Algorithm

Siyang Li, Adam G. Riess, Dan Scolnic +6

The Tip of the Red Giant Branch provides a luminous standard candle for calibrating distance ladders that reach Type Ia supernova (SN Ia) hosts. However, recent work reveals that t…

astro-ph.GA2023★ 16 cited

A Gaia Data Release 3 View on the Tip of the Red Giant Branch Luminosity

Siyang Li, Stefano Casertano, Adam G. Riess

The tip of the red giant branch (TRGB) is a standard candle that can be used to help refine the determination of the Hubble constant. Data Release 3 (DR3) provides synthetic…

astro-ph.GA2022★ 24 cited

A Maximum Likelihood Calibration of the Tip of the Red Giant Branch Luminosity from High Latitude Field Giants using Gaia Early Data Release 3 Parallaxes

Siyang Li, Stefano Casertano, Adam G. Riess

The calibration of the tip of the red giant branch (TRGB) in the -band has a direct role in determinations of the Hubble constant, a subject of recent interest due to the discre…