Results 71 to 80 of about 1,730 (181)

The distance to the Small Magellanic Cloud from multiband period-luminosity relations for classical Cepheids and its dependence on metallicity

open access: yesEPJ Web of Conferences, 2017
We present a distance determination to the Small Magellanic Cloud (SMC) using optical and near-infrared photometry from OGLE and IRSF. Applying a multiband method to V, I, J, H and K OGLE and IRSF data, we measured the SMC true distance modulus and mean ...
Wielgorski Piotr   +2 more
doaj   +1 more source

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

open access: yesCancer, 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   +9 more
wiley   +1 more source

Small Magellanic Cloud Cepheids Observed with the Hubble Space Telescope Provide a New Anchor for the SH0ES Distance Ladder

open access: yesThe Astrophysical Journal
We present phase-corrected photometric measurements of 88 Cepheid variables in the core of the Small Magellanic Cloud (SMC), the first sample obtained with the Hubble Space Telescope's (HST) Wide Field Camera 3, in the same homogeneous photometric system
Louise Breuval   +9 more
doaj   +1 more source

Prospects for X-Ray and FUV Observations to Provide Insight Into the “Cepheid Mass Problem”

open access: yesFrontiers in Astronomy and Space Sciences, 2019
The classical Cepheid Leavitt Law (Period-Luminosity relation) has been known for 100 years, and used in extragalactic distance determination for nearly as long.
Nancy Remage Evans, Scott Engle
doaj   +1 more source

On improved Cepheid distance estimators

open access: yes, 1995
Plain Latex version 3.141, 25 pages including figures and tables.
Kanbur, Shashi M., Hendry, Martin A.
openaire   +2 more sources

A Cepheid distance to NGC 4258

open access: yes, 1999
Approved for publication in Nature. Strictly embargoed from publicity until one week before publication.
Maoz, Eyal   +7 more
openaire   +2 more sources

The Potential Broader Complex Linked to the Key Cepheid SV Vul

open access: yesThe Astrophysical Journal
A new distance was established to the Cepheid SV Vul ( P  ≃ 45 ^d ) and its host cluster Alicante 13, and is tied in part to deeper UKIDSS-DR6 photometry and Gaia DR3 observations ( d  = 2.30 ± 0.13 kpc).
Daniel Majaess   +12 more
doaj   +1 more source

Ultra-long-period Cepheids as Standard Candles from Gaia to Rubin-LSST

open access: yesThe Astrophysical Journal Supplement Series
An analysis of the properties of ultra-long-period Cepheids (ULPs) could significantly contribute to understanding the Hubble constant tension, e.g., the current discrepancy between determinations based on local distance indicators and those relying on ...
Ilaria Musella   +12 more
doaj   +1 more source

On Cepheid Distances in the $${H}_{0}$$ Measurement

open access: yes
Classical Cepheids were the first stellar standard candles and have played a crucial role for astronomical distance measurements ever since the discovery of the Leavitt law (period-luminosity relation). Enormous improvements in distance accuracy have been achieved since Hertzsprung's first application of Leavitt's law to measure the distance to the ...
openaire   +2 more sources

Highlights on eclipsing binary variables from Araucaria Project

open access: yesEPJ Web of Conferences, 2015
The Araucaria Project, which main goal is to provide precise determination of the cosmic distance scale, has recently made a set of discoveries involving variable stars in binary systems. Among these discoveries we highlight three: 1% precise measurement
Karczmarek Paulina   +10 more
doaj   +1 more source

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