Results 1 to 10 of about 5,710,154 (292)
The WFCAM Multi-wavelength Variable Star Catalog [PDF]
, 2014 Stellar variability in the near-infrared (NIR) remains largely unexplored. The exploitation of public science archives with data-mining methods offers a perspective for the time-domain exploration of the NIR sky.
Angeloni, R. +6 more
core +5 more sources
Imbalance Learning for Variable Star Classification [PDF]
Monthly notices of the Royal Astronomical Society, 2020 The accurate automated classification of variable stars into their respective subtypes is difficult. Machine learning–based solutions often fall foul of the imbalanced learning problem, which causes poor generalization performance in practice ...
Zafiirah Hosenie +4 more
semanticscholar +1 more source
Scalable End-to-end Recurrent Neural Network for Variable star classification [PDF]
Monthly notices of the Royal Astronomical Society, 2020 During the last decade, considerable effort has been made to perform automatic classification of variable stars using machine-learning techniques. Traditionally, light curves are represented as a vector of descriptors or features used as input for many
I. Becker +5 more
semanticscholar +1 more source
A Catalog of RV Variable Star Candidates from LAMOST [PDF]
Astrophysical Journal Supplement Series, 2020 Radial velocity (RV) variable stars are important in astrophysics. The Large Sky Area Multi-Object Fiber Spectroscopic Telescope (LAMOST) spectroscopic survey has provided ∼6.5 million stellar spectra in its Data Release 4 (DR4).
Z. Tian +16 more
semanticscholar +1 more source
Sparse Identification of Variable Star Dynamics
Astrophysical Journal, 2022 Variable stars play a crucial role as standard candles and provide valuable insights into stellar physics. They can be modeled either through fully fledged hydrodynamical simulations or analytically as systems of coupled differential equations describing
M. Pasquato +8 more
semanticscholar +1 more source
Variable Accretion onto Protoplanet Host Star PDS 70 [PDF]
Astrophysical Journal, 2020 The PDS 70 system has been subject to many studies in the past year following the discovery of two accreting planets in the gap of its circumstellar disk. Nevertheless, the mass accretion rate onto the star is still not well known.
T. Thanathibodee +8 more
semanticscholar +1 more source
CCD VI time-series of the extremely metal-poor globular cluster M92: revisiting its variable star population [PDF]
, 2020 We present an analysis of \emph{VI} CCD time-series photometry of the Oo II type globular cluster M92. The variable star population of the cluster is studied with the aim of revising their classifications, identifications, frequency spectra and to select
M. A. Yepez +2 more
semanticscholar +1 more source
A new study of the variable star population in the Hercules globular cluster (M13; NGC 6205)★ [PDF]
Monthly notices of the Royal Astronomical Society, 2019 We present the results from $VI$ CCD time-series photometry of the globular cluster M13 (NGC 6205). From the Fourier decomposition of the light curves of RRab and RRc stars we found an average metallicity of [Fe/H]zw = -1.58 $\pm$ 0.09.
D. Deras +6 more
semanticscholar +1 more source
Variable Star Classification Using Multi-View Metric Learning [PDF]
Monthly notices of the Royal Astronomical Society, 2019 Comprehensive observations of variable stars can include time domain photometry in a multitude of filters, spectroscopy, estimates of colour (e.g. U-B), etc.
K. Johnston +4 more
semanticscholar +1 more source
A Luminous Red Supergiant and Dusty Long-period Variable Progenitor for SN 2023ixf [PDF]
Astrophysical Journal Letters, 2023 We analyze pre-explosion near- and mid-infrared (IR) imaging of the site of SN 2023ixf in the nearby spiral galaxy M101 and characterize the candidate progenitor star.
J. Jencson +25 more
semanticscholar +1 more source