Results 41 to 50 of about 50,322 (326)

The black hole in IC 1459 from HST observations of the ionized gas disk

, 2000
The peculiar elliptical galaxy IC 1459 (M_V = -21.19, D = 16.5 Mpc) has a fast counterrotating stellar core, stellar shells and ripples, a blue nuclear point source and strong radio core emission.
Binney J., C. Marcella Carollo, de Bruijne J. H. J., Drinkwater M. J., Genzel R., Gijs A. Verdoes Kleijn, Goudfrooij P., Goudfrooij P., Heckman T. M., Kormendy J., P. Tim de Zeeuw, Roeland P. van der Marel, Sadler E. M., Simpson C., Simpson C., Slee O. B., van der Marel R. P., van der Marel R. P., van der Marel R. P., Whittle M.   +19 more
core   +1 more source

MRK 1216 & NGC 1277 - An orbit-based dynamical analysis of compact, high velocity dispersion galaxies [PDF]

, 2015
We present a dynamical analysis to infer the structural parameters and properties of the two nearby, compact, high velocity dispersion galaxies MRK1216 & NGC1277.
Bosch, Remco van den, Gebhardt, Karl, Gültekin, Kayhan, Husemann, Bernd, Lyubenova, Mariya, van de Ven, Glenn, Walsh, Jonelle L., Yıldırım, Akın   +7 more
core   +4 more sources

Measurement of the Mass and Stellar Population Distribution in M82 with the LBT

, 2012
We present a K-band spectroscopic study of the stellar and gas kinematics, mass distribution, and stellar populations of the archetypical starburst galaxy M82.
Cottrell, Draine, Förster Schreiber, Förster Schreiber, Gerke, Goetz, Johnny P. Greco, Konstantopoulos, Mayall, Mayya, McCrady, McKeith, McKeith, Miwa, Noguchi, Oliva, Origlia, Paul Martini, Puxley, Saito, Sakai, Sanders, Sofue, Todd A. Thompson, Westmoquette   +24 more
core   +1 more source

Micropatterned Biphasic Printed Electrodes for High‐Fidelity on‐Skin Bioelectronics

Advanced Functional Materials, EarlyView.
Micropatterned biphasic printed electrodes achieve unprecedented skin conformity and low impedance by combining liquid‐metal droplets with microstructured 3D lattices. This scalable approach enables high‐fidelity detection of ECG, EMG, and EEG signals, including alpha rhythms from the forehead, with long‐term comfort and stability.
Manuel Reis Carneiro, Telmo Lopes, André F. Silva, Carmel Majidi, Mahmoud Tavakoli   +4 more
wiley   +1 more source

Impulsive Mixing of Stellar Populations in Dwarf Spheroidal Galaxies

The Astrophysical Journal
We study the response of mono-energetic stellar populations with initially isotropic kinematics to impulsive and adiabatic changes to an underlying dark matter potential.
Raphaël Errani, Matthew G. Walker, Simon Rozier, Jorge Peñarrubia, Julio F. Navarro   +4 more
doaj   +1 more source

All-sky Kinematics and Chemistry of Monoceros Stellar Overdensity

The Astrophysical Journal, 2023
We explore the kinematic and chemical properties of the Monoceros stellar overdensity by combining data from the Two Micron All Sky Survey, Wide-field Infrared Survey Explorer, APOGEE, and Gaia.
Lais Borbolato, Hélio D. Perottoni, Silvia Rossi, Guilherme Limberg, Angeles Pérez-Villegas, Friedrich Anders, Teresa Antoja, Chervin F. P. Laporte, Helio J. Rocha-Pinto, Rafael M. Santucci   +9 more
doaj   +1 more source

Modulating Two‐Photon Absorption in a Pyrene‐Based MOF Series: An In‐Depth Investigation of Structure–Property Relationships

Advanced Functional Materials, EarlyView.
This study investigates H4TBAPy‐based metal–organic frameworks (MOFs) ‐ NU‐1000, NU‐901, SrTBAPy, and BaTBAPy ‐ for multiphoton absorption (MPA) performance. It observes topology‐dependent variations in the 2PA cross‐section, with BaTBAPy exhibiting the highest activity.
Simon N. Deger, Helmy Pacheco Hernandez, Yang Cui, Hongxing Hao, Vanessa Ramm, David C. Mayer, Khai‐Nghi Truong, Roland A. Fischer, Jürgen Hauer, Mariana Kozlowska, Alexander Pöthig   +10 more
wiley   +1 more source

Confirmation of an Anomalously Low Dark Matter Content for the Galaxy NGC 1052-DF4 from Deep, High-resolution Continuum Spectroscopy

The Astrophysical Journal, 2023
NGC 1052-DF4 was found to be the second “galaxy lacking dark matter” in the NGC 1052 group, based on its velocity dispersion of ${\sigma }_{\mathrm{gc}}={4.2}_{-2.2}^{+4.4}$ km s ^−1 as measured from the radial velocities of seven of its globular ...
Zili Shen, Pieter van Dokkum, Shany Danieli   +2 more
doaj   +1 more source

Multiband Switchable Microwave Absorbing Metamaterials Based on Reconfigurable Kirigami–Origami

Advanced Functional Materials, EarlyView.
A reconfigurable metamaterial featuring tunable microwave‐absorbing and load‐bearing performance is proposed. Stretchable kirigami and bistable origami configurations are integrated as actuating components, and the synergistic deformation mechanisms are systematically analyzed.
Weimin Ding, Zhong Zhang, Zeang Zhao, Shengyu Duan, Panding Wang, Xiaogang Guo, Hongshuai Lei, Daining Fang   +7 more
wiley   +1 more source

Probing Stellar Kinematics with the Time-Asymmetric Hanbury Brown and Twiss Effect

The Open Journal of Astrophysics
Intensity interferometry (II) offers a powerful means to observe stellar objects with a high resolution. In this work, we demonstrate that II can also probe internal stellar kinematics by revealing a time-asymmetric Hanbury Brown and Twiss (HBT) effect ...
Lucijana Stanic, Ivan Cardea, Edoardo Charbon, Domenico Della Volpe, Daniel Florin, Andrea Guerrieri, Gilles Koziol, Etienne Lyard, Nicolas Produit, Aramis Raiola, Prasenjit Saha, Vitalii Sliusar, Achim Vollhardt, Roland Walter   +13 more
doaj   +1 more source