Results 61 to 70 of about 579,982 (342)

A Stellar Dynamical Mass Measurement of the Black Hole in NGC 3998 from Keck Adaptive Optics Observations [PDF]

open access: yes, 2012
We present a new stellar dynamical mass measurement of the black hole in the nearby, S0 galaxy NGC 3998. By combining laser guide star adaptive optics observations obtained with the OH-Suppressing Infrared Imaging Spectrograph on the Keck II telescope ...
Barth, Aaron J.   +3 more
core   +2 more sources

Simulated stellar kinematics studies of high-redshift galaxies with the HARMONI Integral Field Spectrograph [PDF]

open access: yes, 2016
We present a study into the capabilities of integrated and spatially resolved integral field spectroscopy of galaxies at z = 2–4 with the future HARMONI spectrograph for the European Extremely Large Telescope (E-ELT) using the simulation pipeline, HSIM ...
S. Kendrew   +11 more
semanticscholar   +1 more source

A Complex Stellar Line-of-Sight Velocity Distribution in the Lenticular Galaxy NGC 524

open access: yesOpen Astronomy, 2011
We present a detailed study of the stellar and gaseous kinematics in the luminous early-type galaxy NGC 524, derived from the long-slit spectroscopic observations obtained with the Russian 6 m telescope and the IFU data from the SAURON survey.
Katkov I.   +4 more
doaj   +1 more source

Wrinkles in Time. I. Rapid Rotators Found in High-eccentricity Orbits

open access: yesThe Astrophysical Journal, 2023
Recent space-based missions have ushered in a new era of observational astronomy, where high-cadence photometric light curves for thousands to millions of stars in the solar neighborhood can be used to test and apply stellar age-dating methods, including
Rayna Rampalli   +4 more
doaj   +1 more source

Stellar kinematics using a third integral of motion: method and application on the Andromeda galaxy [PDF]

open access: yes, 2016
We probe the feasibility of describing the structure of a multicomponent axisymmetric galaxy with a dynamical model based on the Jeans equations while taking into account a third integral of motion.
R. Kipper   +4 more
semanticscholar   +1 more source

Harnessing Fungal Biowelding for Constructing Mycelium‐Engineered Materials

open access: yesAdvanced Engineering Materials, EarlyView.
Mycelium‐bound composites (MBCs) offer low‐carbon alternatives for construction, yet interfacial bonding remains a critical challenge. This review examines fungal biowelding as a biocompatible adhesive, elucidating mycelium‐mediated interfacial mechanisms and their role in material assembly. Strategies to optimize biowelding are discussed, highlighting
Xue Brenda Bai   +2 more
wiley   +1 more source

Mapping the Stellar Kinematics in the Central 240 pc of M87 with the James Webb Space Telescope

open access: yesThe Astrophysical Journal
The supermassive black hole (SMBH) in the giant elliptical galaxy M87 is one of the most well studied in the local Universe, but the stellar- and gas-dynamical SMBH mass measurements disagree.
Refa M. Al-Amri   +4 more
doaj   +1 more source

Investigation of Laser Ablation and Brush Pre‐Treatments for AlCu Cold Roll Bonding in Oxygen‐Free Conditions

open access: yesAdvanced Engineering Materials, EarlyView.
It is shown that laser ablation pretreatment under oxygen‐free conditions enables copper–aluminium bonding at significantly lower deformation degrees and improved properties compared to mechanical brushing. Laser ablation further increases interface contact area and induces favourable residual stress states and microstructural compatibility ...
Khemais Barienti   +11 more
wiley   +1 more source

Measuring the Central Dark Mass in NGC 4258 with JWST/NIRSpec Stellar Kinematics

open access: yesThe Astrophysical Journal
We present a new stellar-dynamical measurement of the supermassive black hole (SMBH) mass in the nearby spiral galaxy NGC 4258 (M106), a critical benchmark for extragalactic mass measurements.
Dieu D. Nguyen   +10 more
doaj   +1 more source

2D mapping of young stars in the inner 180 pc of NGC 1068: correlation with molecular gas ring and stellar kinematics [PDF]

open access: yes, 2012
We report the first two-dimensional mapping of the stellar population and non-stellar continua within the inner 180 pc (radius) of NGC 1068 at a spatial resolution of 8 pc, using integral field spectroscopy in the near-infrared.
Cid Fernandes   +25 more
core   +2 more sources

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