Results 51 to 60 of about 1,730 (181)

THE PULSATION MODE AND DISTANCE OF THE CEPHEID FF AQUILAE [PDF]

The Astrophysical Journal, 2013
To appear in ...
Turner, David Gerald, 1945-, Kovtyukh, V. V., Luck, R. E., Berdnikov, L. N.   +3 more
openaire   +3 more sources

Chicago–Carnegie Hubble Program: A Multiwavelength Search for the Effects of Metallicity on the Cepheid Distance Scale. I. Empirical Evidence

The Astrophysical Journal
Understanding the effects of metallicity on the multiwavelength properties of Cepheids is of continuing importance for their effective use as extragalactic distance indicators and an accurate measure of the Hubble constant, H _0 .
Barry F. Madore, Wendy L. Freedman
doaj   +1 more source

Z-Distribution and Period Gradient of Classical Cepheids in the Galactic Plane [PDF]

Journal of Astronomy and Space Sciences, 1986
The z-coordinate distribution of cepheids was studied and the finding of Fernie(1968) that the Cepheid layer is inclined toward a formal Galactic plane and the Sun is located above the cepheid plane was confirmed.
Chulhee Kim
doaj  

Synthetic Population of Binary Cepheids. II. The Effect of Companion Light on the Extragalactic Distance Scale

The Astrophysical Journal, 2023
Because of their period–luminosity relation (PLR), classical Cepheids play a key role in the calibration of the extragalactic distance scale and the determination of the Hubble–Lemaître constant H _0 .
Paulina Karczmarek, Gergely Hajdu, Grzegorz Pietrzyński, Wolfgang Gieren, Weronika Narloch, Radosław Smolec, Grzegorz Wiktorowicz, Krzysztof Belczynski   +7 more
doaj   +1 more source

Abstract Supplement

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

Cepheids as Distance Indicators

, 1996
We review the use of Cepheids as distance indicators with particular emphasis on the methods which have been applied to HST observations of Cepheids. The calibration of the period-luminosity relations is examined in detail and we identify possible problems with the existing calibrations. New V- and I-band period luminosity relations are presented based
openaire   +2 more sources

The Dependence of the Extinction Coefficient on Reddening for Galactic Cepheids

The Astrophysical Journal
Cepheids are fundamental distance indicators, playing a crucial role not only in the cosmic distance ladder but also in mapping the structure, kinematics, and extinction properties of the Milky Way.
Huajian Wang, Xiaodian Chen, Shu Wang
doaj   +1 more source

TOWARDS A DETERMINATION OF DEFINITIVE PARAMETERS FOR THE LONG PERIOD CEPHEID S VULPECULAE

Odessa Astronomical Publications, 2013
A new compilation of  UBV data for stars near the Cepheid S Vul incorporates BV observations from APASS and NOMAD to augment UBV observations published previously.
D. G. Turner
doaj   +1 more source

Invasive disease‐free and overall survival after (neo)adjuvant chemotherapy in postmenopausal patients with hormone receptor‐positive, HER2‐negative early breast cancer treated with upfront letrozole: Experiences from the phase IV PreFace trial

International Journal of Cancer, Volume 157, Issue 11, Page 2363-2373, 1 December 2025.
What's New? Neoadjuvant chemotherapy (NACT) can be highly effective for patients with early‐stage breast cancer. Patients with hormone receptor‐positive (HRpos), HER2‐negative (HER2neg) breast cancer, however, may benefit less from NACT. Here, the authors investigated survival outcomes with adjuvant chemotherapy or NACT in a population of ...
Milena Beierlein, Lothar Häberle, Naiba Nabieva, Nicolai Maass, Bahriye Aktas, Sherko Kümmel, Christoph Thomssen, Christopher Wolf, Hans‐Christian Kolberg, Cosima Brucker, Wolfgang Janni, Peter Dall, Andreas Schneeweiss, Frederik Marme, Marc W. Sütterlin, Matthias Ruebner, Anna‐Katharin Theuser, Nadine M. Hofmann, Sybille Böhm, Katrin Almstedt, Sara Kellner, Paul Gass, Hans‐Joachim Lück, Alexander Hein, Sabine Schmatloch, Matthias Kalder, Christoph Uleer, Ingolf Juhasz‐Böss, Volker Hanf, Christian Jackisch, Volkmar Müller, Brigitte Rack, Erik Belleville, Diethelm Wallwiener, Achim Rody, Claudia Rauh, Chistian M. Bayer, Sabrina Uhrig, Hanna Huebner, Chloë Goossens, Sara Y. Brucker, Carolin C. Hack, Tanja N. Fehm, Peter A. Fasching   +43 more
wiley   +1 more source

JWST Observations Reject Unrecognized Crowding of Cepheid Photometry as an Explanation for the Hubble Tension at 8σ Confidence

The Astrophysical Journal Letters
We present high-definition observations with the James Webb Space Telescope (JWST) of >1000 Cepheids in a geometric anchor of the distance ladder, NGC 4258, and in five hosts of eight Type Ia supernovae, a far greater sample than previous studies with ...
Adam G. Riess, Gagandeep S. Anand, Wenlong Yuan, Stefano Casertano, Andrew Dolphin, Lucas M. Macri, Louise Breuval, Dan Scolnic, Marshall Perrin, Richard I. Anderson   +9 more
doaj   +1 more source