Results 21 to 30 of about 1,680 (177)
Cepheid Distances from Interferometry [PDF]
, 2007 Long baseline interferometry is now able to resolve the pulsational changes of the angular diameters of a significant number of Cepheids in the solar neighborhood. This allows us to apply a new version of the Baade-Wesselink method to measure their distances, for which we do not need to estimate the star’s temperature.
Kervella, P. +5 more
openaire +2 more sources
A 1.3% Distance to M33 from Hubble Space Telescope Cepheid Photometry
The Astrophysical Journal, 2023 We present a low-dispersion period–luminosity relation (PL) based on 154 Cepheids in Messier 33 (M33) with Hubble Space Telescope (HST) photometry from the PHATTER survey.
Louise Breuval +9 more
doaj +1 more source
Cepheid Distances to Nearby Galaxies [PDF]
International Astronomical Union Colloquium, 1995 AbstractWe have determined new Cepheid distances on a homogeneous system to nine nearby galaxies with Cepheid observations in the V bandpass, using the extensive calibration of the galactic Cepheid PL(V) relation of Gieren, Barnes & Moffett (1993).
Wolfgang P. Gieren +4 more
openaire +1 more source
How rotation affects masses and ages of classical Cepheids
EPJ Web of Conferences, 2017 Classical Cepheid variable stars are both sensitive astrophysical laboratories and accurate cosmic distance tracers. We have recently investigated how the evolutionary effects of rotation impact the properties of these important stars and here provide an
Anderson Richard I. +4 more
doaj +1 more source
Odessa Astronomical Publications, 2019 We present the results of a spectro- scopic and photometric investigation of 20 objects from the open cluster Collinder 394, which contains the Cepheid BB Sgr.
I. A. Usenko +6 more
doaj +1 more source
The Astrophysical Journal, 2023 We compare infrared surface brightness fluctuation (IR SBF) distances measured in galaxies that have hosted type Ia supernovae (SNe Ia) to distances estimated from SNe Ia light-curve fits.
Peter Garnavich +8 more
doaj +1 more source
The Astrophysical JournalWe examine the multiwavelength period–luminosity–color (PLC) relations for Cepheid variables in the Large and Small Magellanic Clouds and the Milky Way.
Barry F. Madore, Wendy L. Freedman
doaj +1 more source
The Cepheid Distance to NGC 4414 [PDF]
International Astronomical Union Colloquium, 2000 AbstractA search for Cepheids in NGC 4414 has been performed using HST archive data. Accurate photometry for this galaxy is challenging due to its high surface brightness background with steep gradients and the rather low S/N of stellar point sources.
openaire +1 more source
THE EXTRAGALACTIC DISTANCE SCALE WITHOUT CEPHEIDS. III. [PDF]
The Astrophysical Journal, 2008 Distances of galaxies in the Hubble Space Telescope Key Project are based on the Cepheid period-luminosity relation. An alternative basis is the tip of the red giant branch. Using archival HST data, we calibrate the infrared Tully-Fisher relation using 14 galaxies with tip of the red giant branch measurements.
Mould, Jeremy, Sakai, Shoko
openaire +5 more sources
Tropical Medicine &International Health, EarlyView.ABSTRACT Introduction Childhood tuberculosis (TB) remains a significant global health challenge, with a substantial number of cases going undiagnosed, particularly among children under five. Early diagnosis and intervention are crucial to reduce TB‐associated morbidity and mortality.
Julia van den Brink +8 more
wiley +1 more source