Results 41 to 50 of about 5,915 (202)

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

Convection Theory and Related Problems in Stellar Structure, Evolution, and Pulsational Stability II. Turbulent Convection and Pulsational Stability of Stars

Frontiers in Astronomy and Space Sciences, 2021
Using our non-local and time-dependent theory of convection and a fixed set of convective parameters (C1,  C2/C1 ,   C3)= (0.70,   0.50,   3.0) calibrated against the Sun, the linear non-adiabatic oscillations for evolutionary models with masses 1–20 M ...
Da-run Xiong
doaj   +1 more source

Spectroscopic properties of a two-dimensional time-dependent Cepheid model I. Description and validation of the model

, 2017
Standard spectroscopic analyses of Cepheid variables are based on hydrostatic one-dimensional model atmospheres, with convection treated using various formulations of mixing-length theory.
Freytag, B., Lemasle, B., Ludwig, H. -G., Marconi, M., Vasilyev, V.   +4 more
core   +2 more sources

Diagnostic Performance of Comprehensive Point‐of‐Care Ultrasound for Pediatric Tuberculosis in Spain: A Prospective Observational Study

Journal of Clinical Ultrasound, EarlyView.
In children with presumptive tuberculosis, comprehensive point‐of‐care (cPOCUS) identified key thoracic abnormalities with high specificity and excellent inter‐reader reliability. Although diagnostic sensitivity was modest and examinations often incomplete, cPOCUS shows promise as a complementary, radiation‐free imaging tool.
Isabelle Munyangaju, Antoni Noguera‐Julian, Aleix Soler‐Garcia, Antoni Soriano‐Arandes, José Miguel Escudero Fernández, Maria Espiau, Begoña Santiago Garcia, Alicia Hernanz‐Lobo, Ángel M. Lancharro Zapata, Enrique Ladera, Angela Manzanares, Daniel Blazquez, Elisa Aguirre Pascual, Isabelle Thierry‐Chef, Danilo Buonsenso, Xavier Serres‐Créixams, Quique Bassat, Elisa Lopez‐Varela   +17 more
wiley   +1 more source

A Novel q-PED Method: Precise Physical Properties of a Merger-origin Binary Cepheid OGLE-LMC-CEP-1347

The Astrophysical Journal Letters
Recently, a double-lined binary classical Cepheid, OGLE-LMC-CEP-1347, was discovered with the orbital period ( P _orb  = 59 days), 5 times shorter than that of any binary Cepheid known before.
Felipe Espinoza-Arancibia, Bogumił Pilecki   +1 more
doaj   +1 more source

Long‐term outcomes following a 5‐year recurrence‐free interval in non‐muscle‐invasive bladder cancer

BJU International, EarlyView.
Objective To describe the recurrence and progression trends of non‐muscle‐invasive bladder cancer (NMIBC) during a 14‐year period in Denmark between 2009 and 2022. Furthermore, to evaluate the risk of late recurrence with or without progression in patients who initially experience a 5‐year recurrence‐free interval (RFI).
Peter B. Hjort, Jørgen B. Jensen, Andreas Ernst   +2 more
wiley   +1 more source

Variability survey of brightest stars in selected OB associations

, 2016
The stellar evolution theory of massive stars remains uncalibrated with high-precision photometric observational data mainly due to a small number of luminous stars that are monitored from space.
Eenmäe, Tõnis, Kolka, Indrek, Laur, Jaan, Leedjärv, Laurits, Tuvikene, Taavi   +4 more
core   +1 more source

Cepheids in the Magellanic Clouds [PDF]

, 1995
In the past few years, the Magellanic Clouds have been the targets for several major variable star surveys. The results of these surveys are now becoming available and it is clear that a Renaissance in LMC and SMC variable star research will result.
Alcock, C., Allsman, R. A., Axelrod, T. S., Bennett, D. P., Cook, K. H., Freeman, K. C., Griest, K., Marshall, S. L., Peterson, B. A., Pratt, M. R., Quinn, P. J., Rodgers, A. W., Stubbs, C. W., Sutherland, W., Welch, D. L.   +14 more
core   +2 more sources

Real‐world progression‐free survival and overall survival in patients with HR+/HER2− advanced breast cancer treated in first‐line with ribociclib, endocrine monotherapy or chemotherapy: Results from the observational RIBANNA study

International Journal of Cancer, Volume 159, Issue 1, Page 210-223, 1 July 2026.
What's New? The CDK4/6 inhibitor ribociclib in combination with an endocrine‐based therapy has demonstrated significant progression‐free and overall survival benefits in patients with advanced/metastatic HR+/HER2‐ breast cancer in the pivotal MONALEESA trials.
Peter A. Fasching, Cosima Brucker, Thomas Decker, Anne Engel, Thomas Göhler, Christian Jackisch, Jan Janssen, Andreas Köhler, Kerstin Lüdtke‐Heckenkamp, Diana Lüftner, Frederik Marmé, Marion van Mackelenbergh, Beate Rautenberg, Marcus Schmidt, Rudolf Weide, Pauline Wimberger, Elena Kisseleff, Christina Pfister, Claudia Quiering, Christian Roos, Achim Wöckel   +20 more
wiley   +1 more source

Search for Classical Cepheids in Galactic Open Clusters and Calibration of the Period–Wesenheit–Metallicity Relation in the Gaia Bands

The Astronomical Journal
It is beneficial to calibrate the period–Wesenheit–metallicity relation (PWZR) of Delta Cephei stars (DCEPs), i.e., classical Cepheids, using accurate parallaxes of associated open clusters (OCs) from Gaia data release 3 (DR3).
Huajian Wang, Ye Xu, Zehao Lin, Chaojie Hao, Dejian Liu, Yingjie Li   +5 more
doaj   +1 more source