Results 21 to 30 of about 3,822 (305)
Observations of red‐giant variable stars by Aboriginal Australians
Aboriginal Australians carefully observe the properties and positions of stars, including both overt and subtle changes in their brightness, for subsistence and social application. These observations are encoded in oral tradition.
Duane W. Hamacher, Hamacher, Duane W.
core +1 more source
UBV Observations of Long-Period Variable Stars, VI [PDF]
Photoelectric observations of 33 long-period and 2 R CrB-type variable stars are presented on the UBV photometric system.
openaire +2 more sources
A Population of Dipper Stars from the Transiting Exoplanet Survey Satellite Mission
Dipper stars are a classification of young stellar objects that exhibit dimming variability in their light curves, dropping in brightness by 10%–50%, likely induced by occultations due to circumstellar disk material.
Benjamin K. Capistrant +14 more
doaj +1 more source
Variability of Known Exoplanet Host Stars Observed by TESS
Both direct and indirect methods of exoplanet detection rely upon detailed knowledge of the potential host stars. Such stellar characterization allows for accurate extraction of planetary properties, as well as contributing to our overall understanding ...
Emilie R. Simpson +5 more
doaj +1 more source
ABSTRACT Background Sickle cell disease (SCD) is a chronic, inherited hemoglobinopathy that requires frequent hospitalization for disease‐related complications. Canadian data on inpatient care is limited. This study compared caregiver‐reported hospital experiences of children with SCD to those with cystic fibrosis (CF), a chronic, autosomal recessive ...
Hailey M. Zwicker +11 more
wiley +1 more source
Improved methodology for the automated classification of periodic variable stars
We present a novel automated methodology to detect and classify periodic variable stars in a large data base of photometric time series. The methods are based on multivariate Bayesian statistics and use a multistage approach. We applied our method to the
Charbonneau, D. +13 more
core +1 more source
Period–Luminosity Relations for Double-mode δ Sct Stars
Previous studies of the period–luminosity relations (PLRs) of Delta Scuti ( δ Sct) stars have focused on those with a single pulsation mode. However, for δ Sct stars with many different pulsation modes, classifying a single mode is difficult.
Qi Jia +5 more
doaj +1 more source
Ap stars with variable periods
10 pages, 4 figures, contribution for the proceedings of the conference Putting A Stars into Context, June 3-7, 2013, Moscow ...
Mikulášek, Zdeněk +7 more
openaire +2 more sources
Period Analysis of Variable Stars by Robust Smoothing
SummaryThe objective is to estimate the period and the light curve (or periodic function) of a variable star. Previously, several methods have been proposed to estimate the period of a variable star, but they are inaccurate especially when a data set contains outliers.
Oh, Hee-Seok +3 more
openaire +2 more sources

