Results 41 to 50 of about 11,049 (214)

Cepheid Period-Radius and Period-Luminosity Relations and the Distance to the LMC [PDF]

, 1997
We have used the infrared Barnes-Evans surface brightness technique to derive the radii and distances of 34 Galactic Cepheid variables. Radius and distance results obtained from both versions of the technique are in excellent agreement.
Bell R. A., Berdnikov L. N., Bersier D., Caccin B., Coulson I. M., Feast M. W., Fouque P., Gieren W. P., Gieren W. P., Giridhar S., Gorynya N. A., Gorynya N. A., Laney C. D., Laney C. D., Laney C. D., Laney C. D., Lloyd Evans T., Matias Gomez, Mermilliod J.-C., Pascal Fouque, Pel J. W., Pont F., Quintana H., Ripepi V., Sasselov D. D., Wolfgang P. Gieren   +25 more
core   +3 more sources

Milky Way Classical Cepheid Distances from Calibrated Infrared Period–Luminosity–Metallicity Relations

The Astrophysical Journal
Classical Cepheids (DCEPs) serve as fundamental standard candles for measuring cosmic distances and investigating the structure and evolution of the Milky Way disk.
Huajian Wang, Xiaodian Chen
doaj   +1 more source

Testing SNe Ia distance measurement methods with SN 2011fe [PDF]

, 2012
The nearby, bright, almost completely unreddened Type Ia supernova 2011fe in M101 provides a unique opportunity to test both the precision and the accuracy of the extragalactic distances derived from SNe Ia light curve fitters.
A. Farkas, A. Pál, A. Szing, Arnett, Bloom, Brown, Cenko, Cushing, E. Szegedi-Elek, Feldmeier, Foley, Foley, Foley, Freedman, G. H. Marion, Ganeshalingam, Guy, Guy, Hayden, Hoeflich, Hsiao, I. B. Bíró, J. C. Wheeler, J. Vinkó, Jha, K. Szatmáry, K. Sárneczky, K. Takáts, K. Vida, Kasen, Kessler, L. L. Kiss, Mandel, Matheson, N. Szalai, Nugent, P. Klagyivik, Parrent, Phillips, Pinto, Pskovskii, R. Szakáts, Rayner, Riess, Riess, Riess, Schlafly, Schlegel, Shappee, T. Borkovits, T. Hegedüs, T. Kovács, T. Szalai, Wang   +53 more
core   +2 more sources

Factors Associated With Opioid Agonist Treatment Engagement and Harm Reduction Service Use: Findings From the New South Wales Opioid Dependence Survey

Drug and Alcohol Review, Volume 45, Issue 3, March 2026.
ABSTRACT Introduction Opioid agonist treatment (OAT) is one of the most effective treatments for opioid dependence, but there can be barriers to accessing treatment. This study examined characteristics associated with OAT engagement—never, previous or current—among people with opioid dependence in NSW, Australia, following recent reforms to OAT access.
Thomas Santo Jr, Chrianna Bharat, Craig Rodgers, Mary Harrod, Sophia Taylor, Emma Zahra, Rachel Sutherland, Amy Peacock, Jason Grebely, Matthew Hickman, Michael Farrell, Louisa Degenhardt   +11 more
wiley   +1 more source

Systematics in the Cepheid and TRGB Distance Scales: Metallicity Sensitivity of the Wesenheit Leavitt Law

The Astrophysical Journal
Using an updated and significantly augmented sample of Cepheid and tip of the red giant branch (TRGB) distances to 28 nearby spiral and irregular galaxies, covering a wide range of metallicities, we have searched for evidence of a correlation of the zero-
Barry F. Madore, Wendy L. Freedman
doaj   +1 more source

The Araucaria Project. The Distance to the Local Group Galaxy WLM from Cepheid Variables discovered in a Wide-Field Imaging Survey

, 2007
We have conducted an extensive wide-field imaging survey for Cepheid variables in the Local Group irregular galaxy WLM. From data obtained on 101 nights, we have discovered 60 Cepheids which include 14 of the 15 Cepheid variables previously detected by ...
Alejandro Garcia, Andrzej Udalski, Dante Minniti, Fabio Bresolin, Gieren W., Grzegorz Pietrzyński, Igor Soszyński, Marcin Kubiak, Michał Szymański, Olaf Szewczyk, Rolf-Peter Kudritzki, Ronald Mennickent, Schwarzenberg-Czerny A., Simon N. R., Udalski A., Udalski A., Udalski A., Udalski A., Udalski A., Wolfgang Gieren, Wozniak P., Łukasz Wyrzykowski   +21 more
core   +1 more source

The Araucaria Project: A study of the classical Cepheid in the eclipsing binary system OGLE LMC562.05.9009 in the Large Magellanic Cloud [PDF]

, 2015
We present a detailed study of the classical Cepheid in the double-lined, highly eccentric eclipsing binary system OGLE-LMC562.05.9009. The Cepheid is a fundamental mode pulsator with a period of 2.988 days. The orbital period of the system is 1550 days.
Bono, Giuseppe, Catelan, Marcio, Gallenne, Alexandre, Gieren, Wolfgang, Gorski, Marek, Graczyk, Dariusz, Karczmarek, Paulina, Konorski, Piotr, Kozlowski, Szymon, Minniti, Dante, Moroni, Pier Giorgio Prada, Mroz, P., Nardetto, Nicolas, Pawlak, M., Pietrukowicz, Pawel, Pietrzynski, Grzegorz, Pilecki, Bogumil, Poleski, Radoslaw, Skowron, Jan, Smolec, Radoslaw, Soszynki, Igor, Storm, Jesper, Suchomska, Ksenia, Szymanski, Michal, Taormina, Monica, Thompson, Ian B., Udalski, Andrzej, Ulaczyk, K., Wyrzykowski, Lukasz   +28 more
core   +3 more sources

Causes and Seasonality of Upper Respiratory Infections in Adults in Lesotho (2021–2022) (CORIAL)

Canadian Journal of Infectious Diseases and Medical Microbiology, Volume 2026, Issue 1, 2026.
Background Upper respiratory tract infections cause morbidity and a high burden on healthcare systems worldwide, especially in low‐ and lower middle‐income countries. Recent studies throughout Africa indicate seasonal patterns that deviate from those previously described in settings with temperate climates.
Nikita Sass, Linda Janita Wüthrich, Flor Lucia Gonzalez Fernandez, Emmanuel Firima, Tracy R. Glass, Moniek Bresser, Josephine Muhairwe, Bulemba Katende, Mamello Molatelle, Irene Ayakaka, Daniel Goldenberger, Kinga Feuz, Pascal Schlaepfer, Klaus Reither, Niklaus D. Labhardt, Mamunur Rahman Malik   +15 more
wiley   +1 more source

Chicago–Carnegie Hubble Program: A Multiwavelength Search for the Effects of Metallicity on the Cepheid Distance Scale. II. Theoretical Models and Synthetic Spectra

The Astrophysical Journal
This is the second of two papers exploring the effects of metallicity on the multiwavelength properties of Cepheids in terms of their multiwavelength period–luminosity (PL) relations, impacting their use as extragalactic distance indicators and ...
Barry F. Madore, Wendy L. Freedman, Kayla Owens   +2 more
doaj   +1 more source

Abstract Supplement

Pulmonary Medicine, Volume 2026, Issue 1, 2026.
 
Marzia Folegani, Semonti Nandi
wiley   +1 more source