6 papers
Mapping the Milky Way with Gaia Bp/Rp spectra-IV: the broken and asymmetric density profile of the stellar disk traced by a large sample of red clumps
Wenbo Wu, Yuqin Chen, Jianhui Lian +10
This study explores the density profile of the stellar disk, radially and azimuthally, based on approximately 8.4 million red clump stars selected from Gaia Bp/Rp spectra. After co…
Constraints on CMBR flux due to high-z dust emission
Martin Lopez-Corredoira
Gjergo & Kroupa (2025) have proposed a new foreground CMBR component produced by dust associated with the progenitor clouds at that led to the formation of massive early-…
Improved measurements of the age of JWST galaxies at z=6-10
M. Lopez-Corredoira, C. M. Gutierrez
From James Webb Space Telescope (JWST) surveys, 31 galaxies with average redshift 7.3 are selected containing large Balmer break, Lyman- break (V-shaped SED versus ). Apart f…
Underestimation of Hubble constant error bars: a historical analysis
Martin Lopez-Corredoira
An analysis of a historical compilation of Hubble-Lemaître constant values (: 163 data points measured between 1976 and 2019) assuming the standard cosmological model gives a…
Measuring the Time Variation of the Fine-structure Constant with Quasars Detected by LAMOST
Jin-Nan Wei, Rui-Jie Chen, Jun-Jie Wei +2
The [O III] emission lines in the optical spectra of galaxies and quasars have been widely used to investigate the possible variation of the fine-structure constant…
Edwin P. Hubble, astropolítico
Martin Lopez-Corredoira
Rather than offering chronologically ordered encyclopedic knowledge of a lifetime, only some of the most striking events of the existence of this well-known scientist are here poin…