Results 61 to 70 of about 6,276,609 (285)
Periodic orbits in the logarithmic potential [PDF]
Astronomy & Astrophysics, 2008 Analytic methods to investigate periodic orbits in galactic potentials. To evaluate the quality of the approximation of periodic orbits in the logarithmic potential constructed using perturbation theory based on Hamiltonian normal forms. The solutions of the equations of motion corresponding to periodic orbits are obtained as series expansions computed
PUCACCO, GIUSEPPE +2 more
openaire +6 more sources
ISPRS International Journal of Geo-InformationThe GF-7 satellite, China’s inaugural sub-meter-level stereoscopic mapping satellite, has been deployed for a wide range of applications, including natural resource investigation, environmental monitoring, fundamental surveying, and the development of ...
Haoran Xia +4 more
doaj +1 more source
Examination of Orbital Period of ZZ Cancri [PDF]
Journal of Astronomy and Space Sciences, 1989 A total of 266 photoeletric observation(91 in V, 93 in B, and 82 in U) for an eclipsing binary, ZZ Cnc, has been secured by using the 61-cm reflector and an uncooled 1P21 photomultiplier phototube of Yonsei University Observatory during 4 years from ...
Ho-Il Kim +3 more
doaj
The eccentric short-period orbit of the supergiant fast X-ray transient HD 74194 (=LM Vel) [PDF]
, 2015 Aims. We present the first orbital solution for the O-type supergiant star HD 74194, which is the optical counterpart of the supergiant fast X-ray transient IGR J08408-4503. Methods.
Alfaro, E. J. +7 more
core +2 more sources
The Orbital Period of V368 Aquilae (Nova Aquilae 1936 No. 2)
, 2009 We report observations of the eclipsing classical nova V368 Aql (Nova Aql 1936 No. 2). These data reveal that the orbital period previously published by Diaz & Bruch is an alias of the true orbital period.
Marin, E., Shafter, A. W.
core +1 more source
The puzzling orbital period evolution of the LMXB AX J1745.6−2901 [PDF]
, 2015 The orbital period evolution of X-ray binaries provides fundamental clues to understanding mechanisms of angular momentum transfer and loss in these systems.
G. Ponti +4 more
semanticscholar +1 more source
Determining the Orbital Period and Wind Geometry in GRO J1655–40
The Astrophysical Journal, 2023 During the course of its 2005 outburst, the black hole X-ray binary GRO J1655–40 launched an accretion disk wind associated with deep X-ray absorption lines and strong Compton scattering.
C. Petretti, J. Neilsen, J. Homan
doaj +1 more source
Quiescent photometric modulations of two low-inclination cataclysmic variables KZGem and TWVir
, 2017 The quiescent periodic photometric modulations of two low-inclination cataclysmic variables observed in Kepler K2 Campaigns 0 and 1, KZ Gem and TW Vir, are investigated. A phase-correcting method was successfully used to detect the orbital modulations of
Dai, Zhibin +4 more
core +1 more source
Co-orbital exoplanets from close-period candidates: the TOI-178 case [PDF]
Astronomy & Astrophysics, 2019 Despite the existence of co-orbital bodies in the solar system, and the prediction of the formation of co-orbital planets by planetary system formation models, no co-orbital exoplanets (also called trojans) have been detected thus far.
A. Leleu +8 more
semanticscholar +1 more source
The Orbital Period of Scorpius X-1
, 2012 The orbital period of Sco X-1 was first identified by Gottlieb et al. (1975). While this has been confirmed on multiple occasions, this work, based on nearly a century of photographic data, has remained the reference in defining the system ephemeris ever
Britt, Christopher T., Hynes, Robert I.
core +1 more source