Results 51 to 60 of about 4,745,474 (343)
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
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
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
DETERMINATION OF SIZE OF THE EMITTING REGION IN ECLIPSING CATACLYSMIC VARIABLE STARS
Odessa Astronomical Publications, 2014 The dependencies of the phase of eclipse of the white dwarf’s centre and the durations of the ascending and descending branches of the light curve on the binary system’s parameters were computed using the spherically symmetric approximation and the more ...
I. L. Andronov, K. D. Andrych
doaj +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
COMMISSION 27: VARIABLE STARS [PDF]
Proceedings of the International Astronomical Union, 2008 The Organizing Committee of Commission 27 has decided to again provide a somewhat abbreviated bibliography as part of this triennial report, as astronomy-centered search engines and on-line publications continue to blossom. We focus on selected highlights in variable star research over the past three years.
Kawaler +12 more
openaire +6 more sources
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
The dual nature of TDC – bridging dendritic and T cells in immunity
FEBS Letters, EarlyView.TDC are hematopoietic cells combining dendritic and T cell features. They reach secondary lymphoid organs (SLOs) and peripheral organs (liver and lungs) after FLT3‐dependent development in the bone marrow and maturation in the thymus. TDC are activated and enriched in SLOs upon viral infection, suggesting that they might play unique immune roles, since
Maria Nelli, Mirela Kuka
wiley +1 more source