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We release the spectra for the more than 57000 objects presented in the First VIPERS Data Release. For each object we distribute the observed, wavelength and flux calibrated spectrum, as well as cleaned spectra, where artifacts due to…

宇宙学与河外天体物理 · 物理学 2014-10-03 P. Franzetti , B. Garilli , L. Guzzo , A. Marchetti , M. Scodeggio

At the core of the Gaia mission is a multi-epoch survey consisting of astrometric, photometric, spectrophotometric, and spectroscopic measurements. The astrometric time series provides parallaxes and proper motions, along with information…

天体物理仪器与方法 · 物理学 2024-12-05 Laurent Eyer

The O- and B-type (OB-type) pulsating stars are important objects to study the structure and evolution of massive stars through asteroseismology. A large amount of data from various sky surveys provide an unprecedented opportunity to search…

太阳与恒星天体物理 · 物理学 2024-12-06 Xiang-dong Shi , Sheng-bang Qian , Li-ying Zhu , Liang Liu , Lin-jia Li , Lei Zang

The space photometric project "Lyra" is developed now in Russia.The project purpose is determination of the photometric information and coordinates of the natural and artificial space objects, from the brightest ones to 16^m in visual…

天体物理仪器与方法 · 物理学 2010-02-26 Alexey V. Mironov , Andrey I. Zakharov , Mikhail E. Prokhorov , Feodor N. Nikolaev , Maxim N. Tuchin

We accurately identify and classify the variability of A-F stars in the southern continuous viewing zone of the TESS satellite. The brightness limit was set to 10 mag to ensure the utmost reliability of our results and allow for…

太阳与恒星天体物理 · 物理学 2024-08-06 M. Skarka , Z. Henzl

RV Tauri variable stars are pulsating evolved stars that are identified by a characterizing feature in their light curves: alternating deep and shallow minima. Many RV Tauri variable stars were originally classified decades ago using visual…

太阳与恒星天体物理 · 物理学 2024-08-27 Rachel N. Nere , Rodolfo Montez , Sophia Sánchez-Maes

We present the first results of the project "Tsessevich". The main goal of this project is to find the real coordinates of eclipsing variable star YY Dra, which had been discovered by Tsessevich in 1934. However, the possible misprint in…

太阳与恒星天体物理 · 物理学 2011-02-08 Natalia A. Virnina

We search for new variable B-type pulsators in the CoRoT data assembled primarily for planet detection, as part of CoRoT's Additional Programme. We aim to explore the properties of newly discovered B-type pulsators from the uninterrupted…

We present preliminary results on a single field observed by WHAT, a small-aperture short focal length automated telescope with an 8.2 deg x 8.2 deg field of view, located at the Wise Observatory. The system is similar to the members of…

天体物理学 · 物理学 2007-05-23 Avi Shporer , Tsevi Mazeh , Amit Moran , Gaspar Bakos , Geza Kovacs

We report on the automated classification of Hipparcos variable stars by a supervised classification algorithm known as Support Vector Machines. The dataset comprised about 3200 stars, each characterized by 51 features. These are the B-V…

天体物理学 · 物理学 2007-12-19 P. G. Willemsen , L. Eyer

The types of instability in the interacting binary stars are reviewed. The project "Inter-Longitude Astronomy" is a series of smaller projects on concrete stars or groups of stars. It has no special funds, and is supported from resources…

The discovery of variable and transient sources is an essential product of synoptic surveys. The alert stream will require filtering for personalized criteria -- a process managed by a functionality commonly described as a Broker. In order…

太阳与恒星天体物理 · 物理学 2015-06-22 Stephen T. Ridgway , Thomas Matheson , Kenneth J. Mighell , Knut A. Olsen , Steve B. Howell

Transmission spectra of exoplanets orbiting active stars suffer from wavelength-dependent effects due to stellar photospheric heterogeneity. WASP-19b, an ultra-hot Jupiter (T$_{eq}$ $\sim$ 2100 K), is one such strongly irradiated gas-giant…

We have created a catalogue of variable stars found from a search of the publicly available K2 mission data from Campaigns 1 and 0. This catalogue provides the identifiers of 8395 variable stars, including 199 candidate eclipsing binaries…

太阳与恒星天体物理 · 物理学 2015-06-29 D. J. Armstrong , J. Kirk , K. W. F. Lam , J. McCormac , S. R. Walker , D. J. A. Brown , H. P. Osborn , D. L. Pollacco , J. Spake

We developed software for detection of variable stars using CCD photometry. It works with "varfind data" that could be exported after processing CCD frames using C-Munipack. Our goals were maximum automation and support of large fields of…

天体物理仪器与方法 · 物理学 2018-12-18 Vitalii Breus

M71 is a nearby, metal-rich globular cluster at low Galactic latitude, where field contamination and spatially variable extinction complicate colour-magnitude diagrams (CMDs) and the identification of cluster member variable stars. Our aims…

星系天体物理 · 物理学 2026-05-13 C. C. Cortés , D. Deras , A. Arellano Ferro , S. Muneer , I. H. Bustos Fierro

[abridged] A "missing data" algorithm is developed to model (ie, reconstruct) the three-dimensional velocity distribution function of a sample of stars using data (velocity measurements) every one of which has one dimension unmeasured (the…

天体物理学 · 物理学 2009-11-11 David W. Hogg , Michael R. Blanton , Sam T. Roweis , Kathryn V. Johnston

The GAPS (Global Architecture of Planetary Systems) project is a, mainly Italian, effort for the comprehensive characterization of the architectural properties of planetary systems as a function of the host stars' characteristics by using…

天体物理仪器与方法 · 物理学 2018-04-02 Marco Molinaro , Serena Benatti , Andrea Bignamini , Riccardo Claudi

We present new results from follow-up time-resolved spectroscopy of radial velocity variable hot subdwarfs from the SPY project. Medium resolution spectra were taken at the ESO NTT. Preliminary orbital solutions are presented for three…

天体物理学 · 物理学 2008-04-09 S. Geier , U. Heber , R. Napiwotzki

We report the discovery of 28 candidate high-velocity stars (HVSs) at heliocentric distances of less than 3 kpc, based on the Large Sky Area Multi-Object Fiber Spectroscopic Telescope (LAMOST) Data Release 1. Our sample of HVS candidates…

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