Results 51 to 60 of about 2,928 (225)

The Impact of the Free-floating Planet Mass Function on the Event Rate for Accurate Microlensing Parallax Determination: Application to Euclid and Roman Parallax Observation

The Astronomical Journal, 2023
A microlensing event is mainly used to search for free-floating planets (FFPs). To estimate the FFP mass and distance via the microlensing effect, a microlensing parallax is one of the key parameters.
M. Ban
doaj   +1 more source

Edge Fluid Turbulence Simulations of Stellarators With GRILLIX

Contributions to Plasma Physics, EarlyView.
ABSTRACT The edge fluid turbulence code GRILLIX has recently been extended from axisymmetric tokamak geometries to support 3D stellarator configurations. Following successful proof‐of‐principle simulations published in Stegmeir et al., we present here a comprehensive simulation of the Wendelstein 7‐AS stellarator.
Andreas Stegmeir, Christoph Pitzal, Barnabas Csillag, Miguel Madeira, Marion Finkbeiner   +4 more
wiley   +1 more source

PROBLEMS AND LIMITATIONS OF SATELLITE IMAGE ORIENTATION FOR DETERMINATION OF HEIGHT MODELS [PDF]

The International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, 2017
The usual satellite image orientation is based on bias corrected rational polynomial coefficients (RPC). The RPC are describing the direct sensor orientation of the satellite images. The locations of the projection centres today are without problems, but
K. Jacobsen
doaj   +1 more source

Flexible Direct‐Conversion X‐Ray Detectors: From Emerging Materials to Conformal Imaging

ENERGY &ENVIRONMENTAL MATERIALS, EarlyView.
This comprehensive review analyzed the performance, challenges, and future directions of four emerging material systems for next‐generation flexible direct‐conversion X‐ray detectors: organic semiconductors, perovskites, metal–organic frameworks, and inorganic metal compounds.
Haipeng Di, Guoliang Ma, Jiaxin Mu, Kailian Dong, Haibin Li, Manjing Wang, Xin Song, Haojin Li, Jianwei Xu, Yiying Zhao, Jingjing Zhao, Guojia Fang   +11 more
wiley   +1 more source

Composite materials based on dual network cross‐linking for flexible sensors

FlexMat, EarlyView.
Utilizing hydrogen bond lithium bond dual network structure to effectively enhance the rapid self‐healing properties of flexible ionic materials. Abstract The further development of flexible ionic materials is limited by the evaporation or leakage of their internal liquid state. This article presents a composite flexible ionic material with no internal
Xiaoming Wang, Hongxin Zhu, Yu Feng, Hean Liao, Ling Weng, Xiaorui Zhang, Dong Yue   +6 more
wiley   +1 more source

Search for Classical Cepheids in Galactic Open Clusters and Calibration of the Period–Wesenheit–Metallicity Relation in the Gaia Bands

The Astronomical Journal
It is beneficial to calibrate the period–Wesenheit–metallicity relation (PWZR) of Delta Cephei stars (DCEPs), i.e., classical Cepheids, using accurate parallaxes of associated open clusters (OCs) from Gaia data release 3 (DR3).
Huajian Wang, Ye Xu, Zehao Lin, Chaojie Hao, Dejian Liu, Yingjie Li   +5 more
doaj   +1 more source

A preliminary comparison of photometric (MWSC) and trigonometric (TGAS) distances of open cluster stars

Open Astronomy, 2017
The goal of this researchwas to compare the open cluster photometric distance scale of the global survey of star clusters in the MilkyWay (MWSC) with the distances derived fromtrigonometric parallaxes fromthe Gaia DR1/TGAS catalogue and to investigate ...
Kovaleva Dana, Piskunov Anatoly, Kharchenko Nina, Scholz Ralf-Dieter   +3 more
doaj   +1 more source

Intraoperative variability between the anteroposterior and posterior condylar axes in primary TKA supports a 20° proximal trochlear entrance design for unrestricted kinematic alignment

Knee Surgery, Sports Traumatology, Arthroscopy, EarlyView.
Abstract Purpose Unrestricted kinematic alignment (uKA) in total knee arthroplasty (TKA) creates a challenge for trochlear design. Femoral implants designed for mechanical alignment (MA) use asymmetrical posterior bone cuts to adjust axial rotation and optimize patellofemoral tracking. In uKA, posterior bone cuts are calipered resections.
Edward J. McPherson, Jennifer R. Kallini, Diego Dela Pena, Matthew V. Dipane, Madhav Chowdhry   +4 more
wiley   +1 more source

The Distance To The Hyades Cluster Based On Hubble Space Telescope Fine Guidance Sensor Parallaxes [PDF]

, 1997
Trigonometric parallax observations made with the Hubble Space Telescope (HST) Fine Guidance Sensor (FGS) 3 of seven Hyades members in six fields of view have been analyzed along with their proper motions to determine the distance to the cluster ...
Hemenway, P. D., Lee, J. T., Frederick, L. W., Benedict, G. Fritz, Guo, X., KozhurinaPlatais, V., Whipple, A., Wasserman, L., Mendez, R., Girard, T. M., Story, D., Franz, O. G., Jefferys, William H., vanAltena, W. F., Duncombe, R. L., Tsay, W. S., Platais, I., McArthur, B., Jones, B. F., Hanson, Russell B., Nelan, Ed, Klemola, A. R., Lu, C. L., King, J. R., Shelus, P. S., Deliyannis, C. P.   +25 more
core   +3 more sources

Cepheid Metallicity in the Leavitt Law (C–MetaLL) survey

Astronomy & Astrophysics
Context. The C-MetaLL project has provided homogeneous spectroscopic abundances of 290 Classical Cepheids (DCEPs) for which we have the intensity-averaged magnitudes in multiple optical and NIR bands, periods, pulsation modes, and Gaia parallaxes ...
Ripepi V., Trentin E., Catanzaro G., Marconi M., Bhardwaj A., Clementini G., Cusano F., De Somma G., Molinaro R., Sicignano T., Storm J.   +10 more
doaj   +1 more source