Results 131 to 140 of about 10,963 (195)

APPLICATION OF CEPHEIDS TO DISTANCE SCALE: EXTENDING TO ULTRA-LONG PERIOD CEPHEIDS

open access: yesPublications of The Korean Astronomical Society, 2015
Classical Cepheids (hereafter Cepheids) belong to a class of important variable stars that can be used to determine distances to nearby galaxies via the famous period-luminosity (PL) relations, i.e. the Leavitt Law. In turn, these distances can then be used to calibrate a host of secondary distance indicators located well within the Hubble ow, and ...
openaire   +2 more sources

Testing the Cosmic Distance Duality Relation Using Strong Gravitational Lensing Time Delays and Type Ia Supernovae

open access: yesThe Astrophysical Journal
We present a comprehensive test of the cosmic distance duality relation (DDR) using a combination of strong gravitational lensing (SGL) time delay measurements and Type Ia supernovae (SNe Ia) data.
Jing-Zhao Qi   +3 more
doaj   +1 more source

Readiness to transition to HPV self-collection from VIA screening: a mixed methods health systems assessment from Tamil Nadu, India. [PDF]

open access: yesBMC Health Serv Res
Oommen AM   +12 more
europepmc   +1 more source

Performance of 2 Finger-Stick Blood Tests to Triage Adults With Symptoms of Pulmonary Tuberculosis: A Prospective Multisite Diagnostic Accuracy Study. [PDF]

open access: yesClin Infect Dis
Sutherland JS   +29 more
europepmc   +1 more source

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