Results 111 to 120 of about 6,276,609 (285)
THE HD 192263 SYSTEM: PLANETARY ORBITAL PERIOD AND STELLAR VARIABILITY DISENTANGLED [PDF]
, 2012 As part of the Transit Ephemeris Refinement and Monitoring Survey, we present new radial velocities and photometry of the HD 192263 system. Our analysis of the already available Keck-HIRES and CORALIE radial velocity measurements together with the five ...
D. Dragomir +13 more
semanticscholar +1 more source
4FGL J1318.2+6754: A Long Orbital-period Redback Candidate
The Astrophysical Journal LettersBy combining the Fermi catalog and the single-lined spectroscopic binaries of Gaia Data Release 3 (DR3), we report a new candidate redback millisecond pulsar binary, which is recommended as a target for radio telescopes to detect pulsed signals.
Jie Lin +3 more
doaj +1 more source
Differential rotation enhanced dissipation of tides in the PSR J0045-7319 Binary
, 1996 Recent observations of PSR J0045-7319, a radio pulsar in a close eccentric orbit with a massive B-star companion, indicate that the system's orbital period is decreasing on a timescale of $\approx 5 \times10^{5}$ years, which is much shorter than the ...
Eliot J. Quataert +4 more
core +1 more source
Periodic orbits in periodic discrete dynamics
Computers & Mathematics with Applications, 2008 AbstractWe study the combinatorial structure of periodic orbits of nonautonomous difference equations xn+1=fn(xn) in a periodically fluctuating environment. We define the Γ-set to be the set of minimal periods that are not multiples of the phase period. We show that when the functions fn are rational functions, the Γ-set is a finite set. In particular,
openaire +2 more sources
Investigating the Potential of LS 5039 as a Triple System Using Fermi-LAT Data
The Astrophysical JournalLS 5039 is one of a handful of γ -ray binary systems in the milky Way, comprising a pulsar and a massive O-type companion star with an orbital period of 3.9 days.
Lujun Zeng +4 more
doaj +1 more source
Demographics of Pediatric Orbital Lesions: A Tertiary Eye Center Experience in Saudi Arabia
Journal of Epidemiology and Global Health, 2019 Orbital lesions vary in their classification, incidence, and presentation depending on the age and geographic distribution. Such lesions in the pediatric age group have been studied extensively because of the possibility of faster progression of orbital ...
Hind Manaa Alkatan +2 more
doaj +1 more source
Towards the field binary population: Influence of orbital decay on close binaries
, 2012 Surveys of the binary populations in the solar neighbourhood have shown that the periods of G- and M-type stars are log-normally distributed. However, observations of young binary populations suggest a log-uniform distribution.
Allison +40 more
core +1 more source
A 12 MINUTE ORBITAL PERIOD DETACHED WHITE DWARF ECLIPSING BINARY [PDF]
, 2011 We have discovered a detached pair of white dwarfs (WDs) with a 12.75 minute orbital period and a 1315 km s−1 radial velocity amplitude. We measure the full orbital parameters of the system using its light curve, which shows ellipsoidal variations ...
Warren R. Brown +7 more
semanticscholar +1 more source
The Astrophysical JournalCommon envelope evolution (CEE) is vital for forming short-orbital-period compact binaries. It covers many objects, such as double compact merging binaries, Type Ia supernovae progenitors, binary pulsars, and X-ray binaries.
Hongwei Ge +8 more
doaj +1 more source
KIC 2831097 A short orbital-period candidate RR Lyrae binary
EPJ Web of Conferences, 2017 KIC 2831097 was discovered to be a first-overtone RR Lyrae pulsator based on 4-year Kepler photometry (Sódor et al. 2017, MNRAS, 465, L1). The data show strong, 0.1 d amplitude systematic phase variations that can be explained by light travel-time effect
Sódor Ádám +3 more
doaj +1 more source