Results 141 to 150 of about 699,213 (384)

The Metallicity Dependence of PAH Emission in Galaxies. I. Insights from Deep Radial Spitzer Spectroscopy

The Astrophysical Journal
We use deep Spitzer mid-infrared spectroscopic maps of radial strips across three nearby galaxies with well-studied metallicity gradients (M101, NGC 628, and NGC 2403) to explore the physical origins of the observed deficit of polycyclic aromatic ...
Cory M. Whitcomb, J.-D. T. Smith, Karin Sandstrom, Carl A. Starkey, Grant P. Donnelly, Bruce T. Draine, Evan D. Skillman, Daniel A. Dale, Lee Armus, Brandon S. Hensley, Thomas S.-Y. Lai, Robert C. Kennicutt   +11 more
doaj   +1 more source

Using multi-task learning to determine gas-phase metallicity of star-forming galaxies

Astronomy & Astrophysics
Aims. This study aimed to improve the estimation of the gas-phase metallicity of star-forming galaxies by using a multi-task learning approach that simultaneously performs gas-phase metallicity estimation and spectral classification of galaxies. Methods.
Wang Li-Li, Feng Jia-Bao, Yang Guang-Jun
doaj   +1 more source

Exploring Dipolar Dynamics and Ionic Transport in Metal‐Organic Frameworks: Experimental and Theoretical Insights

Advanced Functional Materials, EarlyView.
In this study, the interplay of dipolar dynamics and ionic charge transport in MOF compounds is investigated. Synthesizing the novel structure CFA‐25 with integrated freely rotating dipolar groups, local and macroscopic effects, including interactions with Cs cations are explored.
Ralph Freund, Arthur Schulz, Peter Lunkenheimer, Maryana Kraft, Thomas Bergler, Harald Oberhofer, Dirk Volkmer   +6 more
wiley   +1 more source

On the Metallicity-Color Relations and Bimodal Color Distributions in Extragalactic Globular Cluster Systems

, 2007
We perform a series of numerical experiments to study how the nonlinear metallicity--color relations predicted by different stellar population models affect the color distributions observed in extragalactic globular cluster systems.
Brocato E., John P. Blakeslee, Michele Cantiello, Reimers D., Richtler T., Wagenhuber J.   +5 more
core   +1 more source

Photoswitchable Conductive Metal–Organic Frameworks

Advanced Functional Materials, EarlyView.
A conductive material where the conductivity can be modulated remotely by irradiation with light is presented. It is based on films of conductive metal–organic framework type Cu3(HHTP)2 with embedded photochromic molecules such as azobenzene, diarylethene, spiropyran, and hexaarylbiimidazole in the pores.
Yidong Liu, Mersad Mostaghimi, Abhinav Chandresh, Saibal Jana, Wolfgang Wenzel, Lars Heinke   +5 more
wiley   +1 more source

Not Just Winds: Why Models Find That Binary Black Hole Formation Is Metallicity-dependent, while Binary Neutron Star Formation Is Not

The Astrophysical Journal
Both detailed and rapid population studies alike predict that binary black hole (BHBH) formation is orders of magnitude more efficient at low metallicity than high metallicity, while binary neutron star (NSNS) formation remains mostly flat with ...
L. A. C. van Son, S. K. Roy, I. Mandel, W. M. Farr, A. Lam, J. Merritt, F. S. Broekgaarden, A. A. C. Sander, J. J. Andrews   +8 more
doaj   +1 more source

Oxygen Metallicity Determinations from Optical Emission Lines in Early-type Galaxies

, 2009
We measured the oxygen abundances of the warm (T$\sim 10^{4}K$) phase of gas in seven early-type galaxies through long-slit observations. A template spectra was constructed from galaxies void of warm gas and subtracted from the emission-line galaxies ...
Aaronson, Alex E. Athey, Allen, Allen, Allen, Asplund, Athey, Barth, Binette, Bregman, Brown, Caon, Cappellaro, Cowie, de Vaucouleurs, Fabian, Filippenko, Fosbury, Garnett, Goudfrooij, Goudfrooij, Goudfrooij, Goudfrooij, Goudfrooij, Goudfrooij, Heckman, Heckman, Howell, Humphrey, Joel N. Bregman, Johnstone, Kobulnicky, Lequeux, Mayall, Osterbrock, Pagel, Parriott, Sadler, Schlegel, Scott, Silge, Singh, Temi, Thomas, Trager, Trager, Trinchieri, Veron-Cetty   +47 more
core   +1 more source

Advancing Electronic Application of Coordination Solids: Enhancing Electron Transport and Device Integration via Surface‐Mounted MOFs (SURMOFs)

Advanced Functional Materials, EarlyView.
The layer‐by‐layer (LbL) assembly of coordination solids, enabled by the surface‐mounted metal‐organic framework (SURMOF) platform, is on the cusp of generating the organic counterpart of the epitaxy of inorganics. The programmable and sequential SURMOF protocol, optimized by machine learning (ML), is suited for accessing high‐quality thin films of ...
Zhengtao Xu, Christof Wöll, Stefan Bräse   +2 more
wiley   +1 more source

Quasistatic and low-velocity impact properties of entangled metallic wire material–silicone rubber composites

, 2023
Xiaoyuan Zheng, Yiwan Wu, Chao Zheng, Hongbai Bai, Rong Liu   +4 more
openalex   +1 more source

The stellar metallicity distribution in intermediate latitude fields with BATC and SDSS data

, 2011
Based on the Beijing-Arizona-Taiwan-Connecticut (BATC) and Sloan Digital Sky Survey (SDSS) photometric data, we adopt SEDs fitting Method to evaluate the metallicity distribution for \sim40,000 main-sequence stars in the Galaxy.
AK, AK, Allende-Prieto, Bahcall, Belokurov, Bilir, Bullock, Carollo, Chen, Chen, Cuihua Du, De Jong, Du, Du, Du, Fan, Freeman, Friel, Fukugita, Gilmore, Gilmore, Gilmore, Gilmore, Gunn, Hogg, Ivezic, Ivezic, Juric, Karaali, Karaali, Karaali, Karatas, Klement, Kroupa, Lang, Lejeune, Lemon, Majewski, Majewski, Newberg, Ojha, Oke, Ratnatunga, Rocha-Pinto, Sandage, Searle, Siegel, Trefzger, Vivas, Xiyan Peng, Yanny, Yanny, Yaz, Yoss, Zhenyu Wu, Zhou, Zhou   +56 more
core   +1 more source