Results 71 to 80 of about 11,049 (214)

Large Magellanic Cloud Distance from Cepheid Variables using Least Squares Solutions

, 2007
Distance to the Large Magellanic Cloud (LMC) is determined using the Cepheid variables in the LMC. We combine the individual LMC Cepheid distances obtained from the infrared surface brightness method and a dataset with a large number of LMC Cepheids ...
A. Sandage, A. Udaski, C. Ngeow, S. Kanbur, S. Kanbur, W. Gieren   +5 more
core   +1 more source

The Cepheid Distance Scale: recent progress in fundamental techniques [PDF]

, 2009
This review examines progress on the Pop I, fundamental-mode Cepheid distance scale with emphasis on recent developments in geometric and quasi-geometric techniques for Cepheid distance determination. Specifically I examine the surface brightness method,
Joyce Ann Guzik, Paul A. Bradley, Thomas G. Barnes   +2 more
core   +3 more sources

I-band Cepheid Distance to WLM [PDF]

International Astronomical Union Colloquium, 1993
WLM (DD0221) is a highly resolved dwarf irregular galaxy in the Local Group. Fifteen Cepheids in this galaxy have been studied by Sandage & Carlson (1985, AJ, 90, 1464) using photographic photometry. We have obtained BVRI CCD photometry of stars in the central area (2.2' x 3.5') of WLM.
Myung Gyoon Lee, Wendy L. Freedman, Barry F. Madore   +2 more
openaire   +1 more source

On the Age Distribution of Classical Cepheids in the Galaxy

Astronomische Nachrichten, Volume 346, Issue 5, June 2025.
ABSTRACT We revisit the problem of the positive correlation between age and Galactocentric distance seen in Galactic Classical Cepheids, which at first sight may seem counter‐intuitive in the context of inside‐out galaxy formation. To explain it, we use the Besançon Galaxy Model and a simulation of star particles in the Galactic disc coupled with ...
Friedrich Anders, Chloé Padois, Marc Vilanova Sar, Marcin Semczuk, Marc del Alcázar‐Julià, Francesca Figueras   +5 more
wiley   +1 more source

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  

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

A Cepheid Distance to NGC 4603 in Centaurus

, 1999
In an attempt to use Cepheid variables to determine the distance to the Centaurus cluster, we have obtained images of NGC 4603 with the Hubble Space Telescope on 9 epochs using WFPC2 and the F555W and F814W filters.
Alibert Y., Barry F. Madore, Graham J. A., Guzman R., Jeffrey A. Newman, Jerjen H., Labhardt L., Lucey J. R., Lucey J. R., Lucey J. R., Marc Davis, N. Silbermann, Nevalainen J., Nusser A., Peter B. Stetson, Randy Phelps, Sasselov D. D., Stein P., Stephen E. Zepf, Wendy L. Freedman, Willick J. A.   +20 more
core   +1 more source

Cepheid distances from infrared long-baseline interferometry [PDF]

Astronomy & Astrophysics, 2004
16 pages, 12 figures, accepted for publication in Astronomy & ...
Mourard, D., Nardetto, N., Bersier, D., Kervella, P., Mourard, D., Kervella, P., Bersier, D., Coudé Du Foresto, V., Coudé Du Foresto, V., Mourard, D., Bersier, D., Nardetto, N., Kervella, P., Foresto, V., Nardetto, N., Du Foresto, V.   +15 more
openaire   +2 more sources

Tumor burden and heterogenous treatment effect of apalutamide in metastatic castration‐sensitive prostate cancer

Cancer, Volume 131, Issue 7, 1 April 2025.
Abstract Background Investigation remains incomplete regarding potential variations in the effect of androgen receptor pathway inhibitors, including apalutamide, based on baseline tumor burden in patients with metastatic castration‐sensitive prostate cancer (mCSPC).
Wataru Fukuokaya, Keiichiro Mori, Takafumi Yanagisawa, Fumihiko Urabe, Pawel Rajwa, Alberto Briganti, Shahrokh F. Shariat, Nobuaki Matsubara, Takahiro Kimura, Akihiro Hirakawa   +9 more
wiley   +1 more source