Results 131 to 140 of about 5,915 (202)

Tracing the Galactic Disk with the Kinematics of Gaia Cepheids

open access: yesThe Astrophysical Journal
Classical Cepheids (CCs) are excellent tracers for understanding the structure of the Milky Way disk. The latest Gaia Data Release 3 provides a large number of line-of-sight velocity information for Galactic CCs, offering an opportunity for studying the ...
Xiaoyue Zhou   +3 more
doaj   +1 more source

Tip of the Red Giant Branch Distances with JWST. II. I-band Measurements in a Sample of Hosts of 10 Type Ia Supernova Match HST Cepheids

open access: yesThe Astrophysical Journal
The Hubble Tension, a >5 σ discrepancy between direct and indirect measurements of the Hubble constant ( H _0 ), has persisted for a decade and motivated intense scrutiny of the paths used to infer H _0 .
Siyang Li   +9 more
doaj   +1 more source

The Effect of a Nonuniversal Extinction Curve on the Wesenheit Function and Cepheid Distances

open access: yesThe Astrophysical Journal Letters
The Wesenheit function is widely used to reduce the effects of interstellar reddening in distance measurements. Its construction, however, relies on the assumption of a universal extinction curve and on fixed values of the total-to-selective extinction ...
Dorota M. Skowron   +3 more
doaj   +1 more source

Megakaryocytes and platelet-fibrin thrombi characterize multi-organ thrombosis at autopsy in COVID-19: A case series. [PDF]

open access: yesEClinicalMedicine, 2020
Rapkiewicz AV   +11 more
europepmc   +1 more source

Impact of Two Antibiotic Therapies on Clinical Outcome and Gut Microbiota Profile in Liver Transplant Paediatric Candidates Colonized by Carbapenem-Resistant Klebsiella pneumoniae CR-KP. [PDF]

open access: yesFront Cell Infect Microbiol, 2021
Cardile S   +8 more
europepmc   +1 more source

Period Changes of Mira Variables, RR Lyrae Stars, and Type II Cepheids

open access: yes, 2013
Mira variables, RR Lyrae variables, and type II Cepheids all represent evolved states of low-mass stars, and long term observations have revealed that changes in pulsation period occur for each of these classes of variable. Most Mira variables show small or no period changes, but a few show large period changes that can plausibly be associated with ...
openaire   +2 more sources

Tracing chemical depletion in evolved binaries hosting second-generation transition discs. [PDF]

open access: yesMon Not R Astron Soc
Mohorian M   +6 more
europepmc   +1 more source

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