Results 161 to 170 of about 579,982 (342)
KINEMATICS AND STELLAR POPULATIONS IN ISOLATED LENTICULAR GALAXIES
The Astronomical Journal, 2015 By combining new long-slit spectral data obtained with the Southern African Large Telescope (SALT) for 9 galaxies with previously published our observations for additional 12 galaxies we study the stellar and gaseous kinematics as well as radially resolved stellar population properties and ionized gas metallicity and excitation for a sample of isolated
Katkov, Ivan Yu. +2 more
openaire +2 more sources
Advanced Robotics Research, EarlyView.A codesign multiobjective optimization framework was developed to enhance the morphology and controller of a snake‐like robot driven by artificial muscles. It improved planar locomotion, agility, and power efficiency. The approach optimized link geometry and controller gains, revealing that shorter muscles near joints and longer linkages maximize ...
Ayla Valles, Mahdi Haghshenas‐Jaryani
wiley +1 more source
Do Strong Bars Exhibit Strong Noncircular Motions?
The Astrophysical JournalGalactic bars induce characteristic motions deviating from pure circular rotation, known as noncircular motions. As bars are nonaxisymmetric structures, stronger bars are expected to show stronger noncircular motions.
Taehyun Kim +6 more
doaj +1 more source
Revista de Investigación de FísicaThe paradigm of a learning model has been explained and validated in an applied case of an astronomy problem where the data we used are declination, parallax, radial velocity of a star, as well as its annual variation in right ascension and declination.
Rafael Carlos +2 more
doaj +1 more source
Stable Imitation of Multigait and Bipedal Motions for Quadrupedal Robots Over Uneven Terrains
Advanced Robotics Research, EarlyView.How are quadrupedal robots empowered to execute complex navigation tasks, including multigait and bipedal motions? Challenges in stability and real‐world adaptation persist, especially with uneven terrains and disturbances. This article presents an imitation learning framework that enhances adaptability and robustness by incorporating long short‐term ...
Erdong Xiao +3 more
wiley +1 more source
The Astrophysical JournalWe probe galactic-scale outflows in star-forming galaxies at z ≳ 2.5 drawn from the JWST/NIRSpec AURORA program. For the first time, we directly compare outflow properties from the early Universe to the present day using near-UV absorption lines.
Emily Kehoe +16 more
doaj +1 more source
Stellar Kinematics and Mean Parallaxes [PDF]
Monthly Notices of the Royal Astronomical Society, 1937 F. K. Edmondson, H. Shapley
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Information Transmission Strategies for Self‐Organized Robotic Aggregation
Advanced Robotics Research, EarlyView.In this review, we discuss how information transmission influences the neighbor‐based self‐organized aggregation of swarm robots. We focus specifically on local interactions regarding information transfer and categorize previous studies based on the functions of the information exchanged.
Shu Leng +5 more
wiley +1 more source
Where are the Population III Star Relics in the Simulated Milky Way Analogs?
The Astrophysical JournalUsing six Milky Way analogs with two different numerical resolutions from the Auriga simulation, we investigate the total mass, spatial distribution, and kinematics of the Population III (Pop III) star relics in the Milky Way analogs at z = 0.
Hang Yang +5 more
doaj +1 more source
Bar imprints on the inner gas kinematics of M33
, 2007 We present measurements of the stellar and gaseous velocities in the central 5' of the Local Group spiral M33. The data were obtained with the ARC 3.5m telescope.
Colin J. +6 more
core +1 more source