Results 41 to 50 of about 4,932,223 (296)
CLUSTERING-BASED FEATURE LEARNING ON VARIABLE STARS [PDF]
arXiv.org, 2016 The success of automatic classification of variable stars depends strongly on the lightcurve representation. Usually, lightcurves are represented as a vector of many descriptors designed by astronomers called features.
Cristóbal Mackenzie +2 more
semanticscholar +1 more source
Observational Properties of 155 O- and B-type Massive Pulsating Stars
The Astrophysical Journal Supplement Series, 2023 O- and B-type (OB-type) pulsating stars are important objects for studying the structure and evolution of massive stars through asteroseismology. A large amount of data from various sky surveys provides an unprecedented opportunity to search for and ...
Xiang-dong Shi +5 more
doaj +1 more source
Variable stars in Local Group Galaxies - II. Sculptor dSph [PDF]
, 2016 We present the identification of 634 variable stars in the Milky Way dSph satellite Sculptor based on archival ground-based optical observations spanning $\sim$24 years and covering $\sim$ 2.5 deg$^2$.
C. Martínez-Vázquez +14 more
semanticscholar +1 more source
Variable Stars Observed in the Galactic Disk by AST3-1 from Dome A, Antarctica [PDF]
, 2017 AST3-1 is the second-generation wide-field optical photometric telescope dedicated to time-domain astronomy at Dome A, Antarctica. Here, we present the results of an i-band images survey from AST3-1 toward one Galactic disk field.
Lingzhi Wang +17 more
semanticscholar +1 more source
Moving in the Dark: Enlightening the Spatial Population Ecology of European Cave Salamanders
Population Ecology, EarlyView.We assessed individual interactions, movement ecology and activity patterns of a subterranean population of Speleomantes strinatii, applying spatial capture–recapture modeling to a photographic dataset of 104 individuals. ABSTRACT Space use and movement are fundamental aspects of organisms' ecology, mirroring individual fitness, behavior, and life ...
Giacomo Rosa +2 more
wiley +1 more source
A Catalog of New Slowly Pulsating B-type Stars
The Astrophysical Journal Supplement Series, 2023 This paper reports the discovery of new slowly pulsating B-type stars. Based on the photometric, spectral, and astrometric data of the TESS, LAMOST, and Gaia surveys, we have found 286 new slowly pulsating B-type (SPB) stars and 21 candidates.
Xiang-dong Shi +3 more
doaj +1 more source
Infection Models for Pine Wilt Disease on the Basis of Vector Behaviors
Population Ecology, EarlyView.Infection models for pine wilt disease without vector density were built to estimate the transmission coefficient of the pathogenic nematode. The models successfully simulated the annual change in the density of infected trees for four pine stands. ABSTRACT Pine wilt disease is caused by the pinewood nematode (Bursaphelenchus xylophilus Steiner et ...
Katsumi Togashi
wiley +1 more source
An X-Ray-dim “Isolated” Neutron Star in a Binary?
The Astrophysical Journal Letters, 2023 We report the discovery of a dark companion to 2MASS J15274848+3536572 with an orbital period of 6.14 hr. Combining the radial velocity from LAMOST observations and modeling of the multiband light curve, one obtains a mass function of ≃0.131 M _⊙ , an ...
Jie Lin +15 more
doaj +1 more source
Luminous and Variable Stars in M31 and M33. IV. Luminous Blue Variables, Candidate LBVs, B[e] Supergiants, and the Warm Hypergiants: How to Tell Them Apart [PDF]
, 2016 In this series of papers we have presented the results of a spectroscopic survey of luminous stars in the nearby spirals M31 and M33. Here, we present spectroscopy of 132 additional stars.
R. Humphreys +4 more
semanticscholar +1 more source
Population Ecology, EarlyView.Bear management changes management actions according to the horizontal axis of the population size and the vertical axis of the number of nuisance bears. Aiming for the target population size of Ntar, Actions I and II protect the bears, and Action IV reduces the population.
Hiroyuki Matsuda +5 more
wiley +1 more source