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相关论文: Are fulleranes responsible for the 21 micron featu…

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Far Ultraviolet Spectroscopic Explorer (FUSE) data is used to investigate the molecular hydrogen (H_2) content of intermediate-velocity clouds (IVCs) in the lower halo of the Milky Way. We analyze interstellar absorption towards 56 (mostly…

天体物理学 · 物理学 2009-11-07 P. Richter , B. P. Wakker , B. D. Savage , K. R. Sembach

A debate persists regarding the correlation between the DIBs 9577 and 9632 \r{A}, and whether they share a common molecular carrier (i.e., C$_{60}^{+}$). A robust high correlation determination emerges after bridging the baseline across an…

星系天体物理 · 物理学 2025-03-18 Daniel Majaess , Tina A. Harriott , Halis Seuret , Cercis Morera-Boado , Lou Massa , Chérif F. Matta

We report a centimetre-wave (cm-wave, 5-31GHz) excess over free-free emission in PNe. Accurate 31 and 250GHz measurements show that the 31GHz flux densities in our sample are systematically higher than the level of optically thin free-free…

天体物理学 · 物理学 2009-11-13 S. Casassus , L. -A. Nyman , C. Dickinson , T. J. Pearson

The fullerene C$_{60}$, one of the largest molecules identified in the interstellar medium (ISM), has been proposed to form top-down through the photo-chemical processing of large (more than 60 C-atoms) polycyclic aromatic hydrocarbon (PAH)…

天体物理仪器与方法 · 物理学 2019-02-20 Weiwei Zhang , Yubing Si , Junfeng Zhen , Tao Chen , Harold Linnartz , Alexander G. G. M. Tielens

This molecular orbital analysis predicts that pure carbon graphene molecules would play an important role on astronomically observed Diffuse Interstellar Bands (DIB), rather than fullerene. Laboratory experiments precisely coincided with…

星系天体物理 · 物理学 2023-12-22 Norio Ota

Development of new greenhouse gas scavengers is actively pursued nowadays. Volatility caused solvent consumption and significant regeneration costs associated with the aqueous amine solutions motivate search for more technologically and…

材料科学 · 物理学 2017-06-29 Nadezhda A. Andreeva , Vitaly V. Chaban

We study the prospects for extracting detailed statistical properties of the neutral Hydrogen distribution during the era of reionization using the brightness temperature fluctuations from redshifted 21 cm line emission. Detection of this…

天体物理学 · 物理学 2009-11-10 M. G. Santos , A. Cooray , L. Knox

Ambipolar transport has been realised in blends of the molecular hole conductor Cu-phthalocyanine (CuPc) and the electron conducting fullerene C60. Charge carrier mobilities and the occupied electronic levels have been analyzed as a…

软凝聚态物质 · 物理学 2008-07-24 W. Bruetting , M. Bronner , M. Goetzenbrugger , A. Opitz

Besides buckminsterfullerene (C60), other fullerenes and their derivatives may also reside in space. In this work, we study the formation and photo-dissociation processes of astronomically relevant fullerene/anthracene (C14H10) cluster…

原子与分子团簇 · 物理学 2019-10-30 Junfeng Zhen , Weiwei Zhang , YuanYuan Yang , Qingfeng Zhu , Alexander G. G. M. Tielens

We present imaging and spectroscopy of NGC 40 acquired using the Spitzer Space Telescope (Spitzer), and the Infrared Space observatory (ISO). These are used to investigate the nature of emission from the central nebular shell, from the…

星系天体物理 · 物理学 2010-10-26 G. Ramos-Larios , J. P. Phillips , L. C. Cuesta

Photoelectron spectroscopy earlier probed oscillations in C60 valence emissions, producing series of minima whose energy separation depends on the molecular cavity. We show here that the quantum phase at these cavity minima exhibits…

原子与分子团簇 · 物理学 2021-06-08 Maia Magrakvelidze , Dylan M. Anstine , Gopal Dixit , Mohamed El-Amine Madjet , Himadri S. Chakraborty

We apply near-field matter-wave interferometry to determine the absolute scalar polarizability of the fullerenes C$_{60}$ and C$_{70}$. A key feature of our experiment is the combination of good transmission and high spatial resolution,…

量子物理 · 物理学 2007-10-01 Martin Berninger , André Stefanov , Sarayut Deachapunya , Markus Arndt

Photoinduced polarons in solid films of polymer-fullerene blends were studied by photoluminescence (PL), photoinduced absorption (PIA) and electron spin resonance (ESR). The donor materials used were P3HT and MEH-PPV. As acceptors we…

[Abridged] We present Far Ultraviolet Spectroscopic Explorer (FUSE) observations of the young, compact planetary nebula (PN) SwSt 1 along the line of sight to its central star HD 167362. We detect circumstellar absorption lines from several…

天体物理学 · 物理学 2009-11-10 N. C. Sterling , H. L. Dinerstein , C. W. Bowers , S. Redfield

A family of unidentified infrared emission (UIE) bands has been observed throughout the Universe. The current observed spectral properties of the UIE bands are summarized. These properties are discussed in the frameworks of different models…

星系天体物理 · 物理学 2022-02-09 Sun Kwok

We have used archival Hubble Space Telescope observations obtained with the Advanced Camera for Surveys to study the H{\alpha} emission properties of main sequence stars in the globular cluster 47 Tucanae. Using a combination of multi-band…

太阳与恒星天体物理 · 物理学 2015-06-17 G. Beccari , G. De Marchi , N. Panagia , L. Pasquini

We study the rotation rates and electric dipole emission of hydrogenated icosahedral fullerenes (single and multishell) in various phases of the interstellar medium. Using the formalism of Draine and Lazarian for the rotational dynamics of…

天体物理学 · 物理学 2007-05-23 Susana Iglesias-Groth

Heavy neutrinos with additional interactions have recently been proposed as an explanation to the MiniBooNE excess. These scenarios often rely on marginally boosted particles to explain the excess angular spectrum, thus predicting large…

高能物理 - 唯象学 · 物理学 2020-01-17 Carlos A. Argüelles , Matheus Hostert , Yu-Dai Tsai

Several dimerization products of fullerene C60 are presented and thoroughly characterized with a quantum chemical DFT model augmented by dispersion. We reanalyze and expand significantly the number of known dimers from 12 to 41. Many of the…

We present 0.35 to 2.5 micron spectra of the south and northwest filaments in the reflection nebula NGC 7023. These spectra were used to test the theory of Seahra & Duley that carbon nanoparticles are responsible for Extended Red Emission…