Results 131 to 140 of about 577 (218)

Theoretical study of Cepheid light curves [PDF]

, 1984
Starting with the initial understanding that pulsation in variable stars is caused by the heat engine of Hydrogen and Helium ionization in their atmospheres (A.S.
Davis, C.G.
core  

Characterizing advanced breast cancer heterogeneity and treatment resistance through serial biopsies and comprehensive analytics. [PDF]

NPJ Precis Oncol, 2021
Li A, Keck JM, Parmar S, Patterson J, Labrie M, Creason AL, Johnson BE, Downey M, Thomas G, Beadling C, Heiser LM, Kolodzie A, Guimaraes AR, Corless CL, Gray JW, Mills GB, Bergan RC, Mitri ZI.   +17 more
europepmc   +1 more source

Optical fiber-fed spectroscopy of pulsating variable stars.

, 2003
Cepheid variable stars are giant stars with unstable outer atmospheres which pulsate radially with periods of days to weeks. As the surface of the star approaches and recedes from the observer, there is a measureable Doppler shift in the star\u27s ...
Torres, Peter
core  

Tracing the Galactic Disk with the Kinematics of Gaia Cepheids

The 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, Xiaodian Chen, Licai Deng, Shu Wang   +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

The 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, Gagandeep S. Anand, Adam G. Riess, Stefano Casertano, Wenlong Yuan, Louise Breuval, Lucas M. Macri, Daniel Scolnic, Rachael Beaton, Richard I. Anderson   +9 more
doaj   +1 more source

Efficacy of SARS-CoV-2 wastewater surveillance for detection of COVID-19 at a residential private college. [PDF]

FEMS Microbes, 2022
Landstrom M, Braun E, Larson E, Miller M, Holm GH.   +4 more
europepmc   +1 more source

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

The 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, Morgan Fouesneau, Ronald Drimmel, Shourya Khanna   +3 more
doaj   +1 more source

Study of Nonlinear Models of Oscillatory Systems by Applying an Intelligent Computational Technique. [PDF]

Entropy (Basel), 2021
Khan NA, Alshammari FS, Romero CAT, Sulaiman M.   +3 more
europepmc   +1 more source

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

EClinicalMedicine, 2020
Rapkiewicz AV, Mai X, Carsons SE, Pittaluga S, Kleiner DE, Berger JS, Thomas S, Adler NM, Charytan DM, Gasmi B, Hochman JS, Reynolds HR.   +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]

Front Cell Infect Microbiol, 2021
Cardile S, Del Chierico F, Candusso M, Reddel S, Bernaschi P, Pietrobattista A, Spada M, Torre G, Putignani L.   +8 more
europepmc   +1 more source