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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…

地球与行星天体物理 · 物理学 2023-07-26 Emilie R. Simpson , Tara Fetherolf , Stephen R. Kane , Joshua Pepper , Teo Mocnik , Paul A. Dalba

The COROT space mission will monitor several target fields for up to 150 days to perform asteroseismology and to search for extrasolar planets by photometric transits. Variable stars in the target fields are important objects for additional…

太阳与恒星天体物理 · 物理学 2009-09-29 C. Karoff , H. Rauer , A. Erikson , H. Voss , P. Kabath , T. Wiese , M. Deleuil , C. Moutou , J. C. Meunier , H. Deeg

The Transiting Exoplanet Survey Satellite (TESS) is a wide-field all-sky survey mission designed to detect Earth-sized exoplanets. After over four years photometric surveys, data from sectors 1-57, including approximately 1,050,000 light…

太阳与恒星天体物理 · 物理学 2025-04-02 Li-Heng Wang , Kai Li , Xiang Gao , Ya-Ni Guo , Guo-You Sun

The stellar evolution theory of massive stars remains uncalibrated with high-precision photometric observational data mainly due to a small number of luminous stars that are monitored from space. Automated all-sky surveys have revealed…

太阳与恒星天体物理 · 物理学 2017-02-08 Jaan Laur , Indrek Kolka , Tõnis Eenmäe , Taavi Tuvikene , Laurits Leedjärv

Observations from the Heliospheric Imagers (HI-1) on both the STEREO spacecraft have been analysed to search for very long period large amplitude stellar variability, finding 6 new candidates. A total of 85 objects, mostly previously known…

太阳与恒星天体物理 · 物理学 2015-06-05 K. T. Wraight , D. Bewsher , Glenn J. White , W. Nowotny , A. J. Norton , C. Paladini

We present the results of an automated variability analysis of the Kepler public data measured in the first quarter (Q1) of the mission. In total, about 150 000 light curves have been analysed to detect stellar variability, and to identify…

太阳与恒星天体物理 · 物理学 2015-05-27 J. Debosscher , J. Blomme , C. Aerts , J. De Ridder

A photometric survey of three Southern target fields with BEST II yielded the detection of 2,406 previously unknown variable stars and an additional 617 stars with suspected variability. This study presents a catalog including their…

The number of known periodic variable stars has increased rapidly in recent years. As an all-sky transit survey, the Transiting Exoplanet Survey Satellite (TESS) plays an important role in detecting low-amplitude variable stars. Using…

太阳与恒星天体物理 · 物理学 2024-12-10 Xinyi Gao , Xiaodian Chen , Shu Wang , Jifeng Liu

We present the results of a massive variability search based on a photometric survey of a six square degree region along the Galactic plane at ($l = 305^\circ$, $b = -0.8^\circ$) and ($l = 330^\circ$, $b = -2.5^\circ$). This survey was…

With the discovery of the first transiting extrasolar planetary system back to 1999, a great number of projects started to hunt for other similar systems. Because of the incidence rate of such systems was unknown and the length of the…

太阳与恒星天体物理 · 物理学 2017-09-13 Geza Kovacs

The Solar TErrestrial RElations Observatory - \emph{STEREO}, is a system of two identical spacecraft in Heliocentric Earth orbit. We use the two Heliospheric Imagers (HI), which are wide angle imagers with multi-baffle systems to do high…

太阳与恒星天体物理 · 物理学 2011-08-11 Vinothini Sangaralingam , Ian R Stevens

The NASA Star and Exoplanet Database (NStED) is a general purpose stellar archive with the aim of providing support for NASA's planet finding and characterization goals, stellar astrophysics, and the planning of NASA and other space…

The NASA Transiting Exoplanet Survey Satellite (TESS) is observing tens of millions of stars with time spans ranging from $\sim$ 27 days to about 1 year of continuous observations. This vast amount of data contains a wealth of information…

This paper is devoted to study the circumstances favourable to detect circumstellar and circumbinary planets in well detached binary-star-systems using eclipse timing variations (ETVs). We investigated the dynamics of well detached binary…

地球与行星天体物理 · 物理学 2016-08-03 R. Schwarz , B. Funk , R. Zechner , A. Bazso

Uncertainties in stellar structure and evolution theory are largest for stars undergoing core convection on the main sequence. A powerful way to calibrate the free parameters used in the theory of stellar interiors is asteroseismology,…

We have searched for variable stars in deep V-band images of a field towards the Galactic plane in Carina. The images were taken with VIMOS instrument at ESO VLT during 4 contiguous nights in April 2005. We detected 348 variables among…

太阳与恒星天体物理 · 物理学 2015-05-13 P. Pietrukowicz , D. Minniti , J. M. Fernandez , G. Pietrzynski , M. T. Ruiz , W. Gieren , R. F. Diaz , M. Zoccali , M. Hempel

We describe an ongoing variable star search program and present the first reduced results of a search in a 19 square degree (4.4\circle x 4.4\circle) field centered on J2000 {\alpha} = 22:03:24, {\delta} = +18:54:32. The search was carried…

星系天体物理 · 物理学 2011-02-01 Michael D. Williams , E. F. Milone

We present the multiple stellar systems observed within the SpHere INfrared survey for Exoplanet (SHINE). SHINE searched for substellar companions to young stars using high contrast imaging. Although stars with known stellar companions…

The results of an adaptive optics survey of exoplanet host stars for stellar companions is presented. We used the AEOS Telescope and its adaptive optics system to collect deep images of the stars in $I$-band. Sixty-two exoplanet host stars…

太阳与恒星天体物理 · 物理学 2015-05-30 Lewis C. Roberts , Nils H. Turner , Theo A. ten Brummelaar , Brian D. Mason , William I. Hartkopf

A few percent of all stars are variable, yet over 90% of variables brighter than 12 magnitude have not been discovered yet. There is a need for an all sky search and for the early detection of any unexpected events: optical flashes from…

天体物理学 · 物理学 2009-10-31 Bohdan Paczynski
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