Results 101 to 110 of about 10,963 (195)

NEW CATALOG OF DISTANCES AND LIGHT CURVE PARAMETERS OF CLASSICAL CEPHEIDS

Odessa Astronomical Publications, 2017
A new version of the catalogue of distances and light-curve parameters for galactic classical Cepheids is presented. The catalogue lists amplitudes, magnitudes at maximum light, and intensity means for 515 stars in UBVRI filters of the Johnson system ...
L. N. Berdnikov
doaj   +1 more source

The TRGB−SBF Project. III. Refining the HST Surface Brightness Fluctuation Distance Scale Calibration with JWST

The Astrophysical Journal
The TRGB−SBF Project team is developing an independent distance ladder using a geometrical calibration of the tip of the red giant branch (TRGB) method in elliptical galaxies that can, in turn, be used to set the surface brightness fluctuation (SBF ...
Joseph B. Jensen, John P. Blakeslee, Michele Cantiello, Mikaela Cowles, Gagandeep S. Anand, R. Brent Tully, Ehsan Kourkchi, Gabriella Raimondo   +7 more
doaj   +1 more source

Decentralised COVID‐19 molecular point‐of‐care testing: lessons from implementing a primary care‐based network in remote Australian communities

Medical Journal of Australia, Volume 222, Issue 4, Page 172-178, March 2025.
Belinda Hengel, Rebecca J Guy, Dawn Casey, Lorraine Anderson, Kirsty Smith, Kelly Andrewartha, Tanya D Applegate, Amit Saha, Philip Cunningham, Lucas DeToca, William D Rawlinson, Marianne Martinello, Annie Tangey, Prital Patel, Mark DS Shephard, Susan Matthews, Louise Causer   +16 more
wiley   +1 more source

JWST Validates HST Distance Measurements: Selection of Supernova Subsample Explains Differences in JWST Estimates of Local H 0

The Astrophysical Journal
We cross-check the Hubble Space Telescope (HST) Cepheid/Type Ia supernova (SN Ia) distance ladder, which yields the most precise local H _0 , against early James Webb Space Telescope (JWST) subsamples (∼1/4 of the HST sample) from SH0ES and CCHP ...
Adam G. Riess, Dan Scolnic, Gagandeep S. Anand, Louise Breuval, Stefano Casertano, Lucas M. Macri, Siyang Li, Wenlong Yuan, Caroline D. Huang, Saurabh Jha, Yukei S. Murakami, Rachael Beaton, Dillon Brout, Tianrui Wu, Graeme E. Addison, Charles Bennett, Richard I. Anderson, Alexei V. Filippenko, Anthony Carr   +18 more
doaj   +1 more source

Cepheids and the Distance Ladder

, 2016
Classical Cepheids plays a key role in the calibration of the extragalactic distance scale. In spite of their importance, some uncertainties related to their properties remain. In particular, a general consensus on the possible dependence on the metallicity of the host galaxy of the Cepheid properties has not been reached yet. These uncertainties could
openaire   +2 more sources

Infrared Surface Brightness Distances to Cepheids

, 2005
4 pages, 4 figures, conference ...
Barnes III, Thomas G., Storm, Jesper, Jefferys, William H., Gieren, Wolfgang P., Fouque, Pascal   +4 more
openaire   +2 more sources

A Database of Cepheid Distance Moduli and TRGB, GCLF, PNLF and SBF Data Useful for Distance Determinations

, 1999
We present a compilation of Cepheid distance moduli and data for four secondary distance indicators that employ stars in the old stellar populations: the planetary nebula luminosity function (PNLF), the globular cluster luminosity function (GCLF), the ...
Ferrarese, Laura, Ford, Holland C., Freedman, Wendy L., Gibson, Brad K., Graham, John A., Huchra, John, Hughes, Shaun M., Illingworth, Garth D., Kelson, Daniel D., Kennicutt, Jr., Robert C., Macri, Lucas, Madore, Barry F., Mould, Jeremy R., Sakai, Shoko, Sebo, Kim, Silbermann, N. A., Stetson, Peter B.   +16 more
core   +2 more sources

Physical parameters and the projection factor of the classical Cepheid in the binary system OGLE-LMC-CEP-0227

, 2013
A novel method of analysis of double-lined eclipsing binaries containing a radially pulsating star is presented. The combined pulsating-eclipsing light curve is built up from a purely eclipsing light curve grid created using an existing modeling tool ...
Bono, G., Freedman, W. L., Gallenne, A., Gieren, W., Graczyk, D., Konorski, P., Madore, B. F., Moroni, P. G. Prada, Nardetto, N., Pietrzyński, G., Pilecki, B., Scowcroft, V., Smolec, R., Soszyński, I., Storm, J., Thompson, I. B., Udalski, A.   +16 more
core   +1 more source

The TRGB-SBF Project. I. A Tip of the Red Giant Branch Distance to the Fornax Cluster with JWST

The Astrophysical Journal
Differences between the local value of the Hubble constant measured via the distance ladder versus the value inferred from the cosmic microwave background with the assumption of the standard ΛCDM model have reached over 5 σ significance.
Gagandeep S. Anand, R. Brent Tully, Yotam Cohen, Dmitry I. Makarov, Lidia N. Makarova, Joseph B. Jensen, John P. Blakeslee, Michele Cantiello, Ehsan Kourkchi, Gabriella Raimondo   +9 more
doaj   +1 more source

The Araucaria Project. The Distance to the Local Group Galaxy WLM from Near-Infrared Photometry of Cepheid Variables

, 2008
We have obtained deep images in the near-infrared J and K filters for several fields in the Local Group galaxy WLM. We report intensity mean magnitudes for 31 Cepheids located in these fields which we previously discovered in a wide-field optical imaging
Dante Minniti, Fabio Bresolin, Grzegorz Pietrzyński, Igor Soszyński, Jesper Storm, Miguel A. Urbaneja, Olaf Szewczyk, Rolf‐Peter Kudritzki, Wolfgang Gieren   +8 more
core   +1 more source