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Explicit Relations between Kaneko--Yamamoto Type Multiple Zeta Values and Related Variants [PDF]

open access: yesKyushu J. of Math. Vol. 76 (2)(2022), pp. 369-406, 2020
In this paper we first establish several integral identities. These integrals are of the form \[\int_0^1 x^{an+b} f(x)\,dx\quad (a\in\{1,2\},\ b\in\{-1,-2\})\] where $f(x)$ is a single-variable multiple polylogarithm function or $r$-variable multiple polylogarithm function or Kaneko--Tsumura A-function (this is a single-variable multiple polylogarithm ...
arxiv   +1 more source

Extrasolar planets in stellar multiple systems

open access: yes, 2012
Analyzing exoplanets detected by radial velocity or transit observations, we determine the multiplicity of exoplanet host stars in order to study the influence of a stellar companion on the properties of planet candidates.
A. Seifahrt   +106 more
core   +1 more source

CCD Photometry Using Multiple Comparison Stars [PDF]

open access: yesJournal of Astronomy and Space Sciences, 2004
The accuracy of CCD observations obtained at the Korean 1.8 m telescope has been studied. Seventeen comparison stars in the vicinity of the cataclysmic variable BG CMi have been measured.
Yonggi Kim   +2 more
doaj   +1 more source

Symmetrization of the Berezin Star Product and Multiple Star Product Method [PDF]

open access: yes, 2000
We construct a multiple star product method and by using this method, show that integral forms of some star products can be written in terms of the path-integral. This method can be applied to some examples. Especially, the associativity of the skew-symmetrized Berezin star product proposed in \cite{SW}, is recovered in large $N$ limit of the multiple ...
arxiv   +1 more source

Triple Evolution: An Important Channel in the Formation of Type Ia Supernovae

open access: yesThe Astrophysical Journal, 2023
Type Ia supernovae (SNe Ia) are thought to be the result of thermonuclear explosions in white dwarfs (WDs). Commonly considered formation pathways include two merging WDs (the double-degenerate channel) and a single WD accreting material from a H or He ...
Abinaya Swaruba Rajamuthukumar   +4 more
doaj   +1 more source

Exploring Thousands of Nearby Hierarchical Systems with Gaia and Speckle Interferometry

open access: yesThe Astronomical Journal, 2023
There should be about 10,000 stellar hierarchical systems within 100 pc with primary stars more massive than 0.5 M _⊙ , and a similar amount of less-massive hierarchies.
Andrei Tokovinin
doaj   +1 more source

Hot Magnetic Stars in Exotic Multiple Systems [PDF]

open access: yesEPJ Web of Conferences, 2020
A strong and stable magnetic field covering the whole surface is a landmark of chemically peculiar or CP stars. To explain the origin of mag- netic stars, several hypotheses were proposed, which depending on the mech- anism and time of formation can be ...
Semenko Eugene
doaj   +1 more source

Multiplicity of late-type B stars with HgMn peculiarity

open access: yes, 2010
Observations at various wavelengths of late B-type stars exhibiting strong overabundances of the chemical elements Hg and Mn in their atmospheres indicate that these stars are frequently found in binary and multiple systems.
Abt   +61 more
core   +1 more source

The multiplicity of exoplanet host stars - Spectroscopic confirmation of the companions GJ3021B and HD27442B, one new planet host triple-star system, and global statistics [PDF]

open access: yes, 2007
We present new results from our ongoing multiplicity study of exoplanet host stars and present a list of 29 confirmed planet host multiple-star systems. Furthermore, we discuss the properties of these stellar systems and compare the properties of exoplanets detected in these systems with those of planets orbiting single stars.
arxiv   +1 more source

An algebraic proof of the duality of multiple zeta-star values of height one [PDF]

open access: yesarXiv, 2023
Shuffle algebra has been employed to give a proof of the duality theorem for multiple zeta-star values of height one.
arxiv  

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