Results 21 to 30 of about 55,649 (206)
The Chemistry of the Cyaphide Ion
Angewandte Chemie International Edition, Volume 62, Issue 32, August 7, 2023., 2023 128 years after the erroneously assumed synthesis of sodium cyaphide, Na(CP), and 51 years after the definitive proof of the existence of HCP, the chemistry of the cyaphide anion has finally gained momentum. This review summarizes the chemistry of the cyaphide anion, (C≡P)−, from its beginnings to the state‐of‐the art.
Tim Görlich +5 more
wiley +1 more source
Microlensing of circumstellar envelopes: II. emission lines from radial and azimuthal flow during fold caustic crossings [PDF]
, 2003 This paper examines the line profile evolution due to bulk motion in circumstellar envelopes during microlensing fold caustic crossing events. These events have recently been shown to be a sensitive probe of stellar surface brightness profiles, thus ...
Bryce, H.M. +5 more
core +1 more source
Vibrational Predissociation Spectra of C2N− and C3N−: Bending and Stretching Vibrations
ChemPhysChem, Volume 24, Issue 15, August 1, 2023., 2023 Infrared predissociation spectra of C2N−(H2) and C3N−(H2) is reported using a cryogenic ion trap at the FELIX Laboratory, thus allowing the detection of low‐lying bending and stretching vibrations of both anions simultaneously. Vibrational configuration interaction calculations validate the assignment.
Franziska Dahlmann +8 more
wiley +1 more source
Microlensing of circumstellar envelopes III. Line profiles from stellar winds in homologous expansion [PDF]
, 2006 This paper examines line profile evolution due to the linear expansion of circumstellar material obsverved during a microlensing event. This work extends our previous papers on emission line profile evolution from radial and azimuthal flow during point ...
Bryce, H.M. +8 more
core +1 more source
Continuous Spectra of Circumstellar Envelopes of Be Stars [PDF]
Symposium - International Astronomical Union, 1994 Line emission in Be star spectra is accompanied by continuous emission both in the Balmer continuum and in the infrared spectral region, due to the same process that is responsible for Balmer line emission, i.e. to recombination radiation from ionized hydrogen in the extended circumstellar disks surrounding the hot central stars.
D. Rohe-Koths, J. Dachs
openaire +1 more source
First Observations With a GNSS Antenna to Radio Telescope Interferometer
Radio Science, Volume 58, Issue 8, August 2023., 2023 Abstract We describe the design of a radio interferometer composed of a Global Navigation Satellite Systems (GNSS) antenna and a Very Long Baseline Interferometry radio telescope. Our eventual goal is to use this interferometer for geodetic applications including local tie measurements.
J. Skeens +7 more
wiley +1 more source
The harsh environment where exoplanets live
Astronomische Nachrichten, Volume 343, Issue 4, May 2022., 2022 Abstract The X‐ray and Extreme Ultraviolet (XUV) actvity of the Sun has determined important effects on the planets around it. In particular, high doses of X‐rays, flares, and coronal mass ejections (CMEs) combined with masses and sizes of the planets and the shielding action of the planetary magnetic fields have determined the diverse habitability of ...
Ignazio Pillitteri
wiley +1 more source
Unveiling the Circumstellar Envelope and Disk: A Subarcsecond Survey of Circumstellar Structures [PDF]
The Astrophysical Journal, 2000 47 Pages, 18 Figures, ApJ ...
Looney, Leslie W. +2 more
openaire +2 more sources
Infrared Spectral Fingerprint of Neutral and Charged Endo- and Exohedral Metallofullerenes
The Astrophysical Journal Supplement Series, 2023 Small metal-containing molecules have been detected and recognized as one of the hybrid species that are efficiently formed in space, especially in the circumstellar envelopes of evolved stars.
R. Barzaga +7 more
doaj +1 more source
(New) molecular ions in the interstellar medium
EPJ Web of Conferences, 2015 We summarize the present knowledge on the molecular ionic content in the interstellar medium and in circumstellar envelopes. Emphasis is given on the most recent detections and the related chemical issues.
Roueff Evelyne
doaj +1 more source