Results 1 to 10 of about 21,926 (193)

Laboratory infrared spectra and fragmentation chemistry of sulfur allotropes [PDF]

open access: yesNature Communications
Sulfur is one of six life-essential elements, but its path from interstellar clouds to planets and their atmospheres is not well known. Astronomical observations in dense clouds have so far been able to trace only 1 percent of cosmic sulfur, in the form ...
Piero Ferrari   +4 more
doaj   +2 more sources

Dust evolution, a global view: II. Top-down branching, nanoparticle fragmentation and the mystery of the diffuse interstellar band carriers [PDF]

open access: yesRoyal Society Open Science, 2016
The origin of the diffuse interstellar bands (DIBs), one of the longest-standing mysteries of the interstellar medium (ISM), is explored within the framework of The Heterogeneous dust Evolution Model for Interstellar Solids (THEMIS). The likely nature of
A. P. Jones
doaj   +1 more source

Measuring the 8621 A Diffuse Interstellar Band in Gaia DR3 RVS Spectra: Obtaining a Clean Catalog by Marginalizing over Stellar Types

open access: yesThe Astrophysical Journal, 2023
Diffuse interstellar bands (DIBs) are broad absorption features associated with interstellar dust and can serve as chemical and kinematic tracers.
Andrew K. Saydjari   +4 more
doaj   +1 more source

Synthesis and Spectroscopy of Buckminsterfullerene Cation C60+ in a Cryogenic Ion Trapping Instrument

open access: yesCrystals, 2021
The assignment of several diffuse interstellar bands in the near-infrared to C60+ ions present at high abundance in space has renewed interest in the astrochemical importance of fullerenes and analogues.
Ewen K. Campbell   +2 more
doaj   +1 more source

Complex Organics in Space: A Changing View of the Cosmos

open access: yesGalaxies, 2023
Planetary explorations have revealed that complex organics are widely present in the solar system. Astronomical infrared spectroscopic observations have discovered that complex organics are synthesized in large quantities in planetary nebulae and ...
Sun Kwok
doaj   +1 more source

A Comparison of the Simulations and Observations for a Nearby Spiral Arm

open access: yesFrontiers in Astronomy and Space Sciences, 2021
The analysis is focused on the ability of galactic open clusters to trace the spiral arms, based on the recent data releases from Gaia. For this, a simple 1D description of the motion of spiral arms and clusters is introduced.
Martin Piecka, Ernst Paunzen
doaj   +1 more source

SEARCH FOR SPECTROSCOPIC FAMILIES AMONG DIFFUSE INTERSTELLAR BANDS

open access: yesOdessa Astronomical Publications, 2010
Diffuse interstellar bands (DIBs) await an explanation for many decades. One expects that significant progress in identification of DIBs’ carriers will be possible when all the known DIBs are divided into families in such a way that only one carrier is ...
B. Wszolek, A. Kuzmicz
doaj   +1 more source

Diffuse Interstellar Bands Toward HD 62542 [PDF]

open access: yes, 2005
Diffuse interstellar bands (DIBs) have been detected for the first time along the peculiar translucent line of sight toward HD 62542, which passes through a diffuse cloud core.
Blake, Geoffrey A.   +2 more
core   +1 more source

Evidence for the naphthalene cation in a region of the interstellar medium with anomalous microwave emission [PDF]

open access: yes, 2008
We report high resolution spectroscopy of the moderately reddened (A$_V$=3) early type star Cernis 52 located in a region of the Perseus molecular cloud complex with anomalous microwave emission.
A. Manchado   +24 more
core   +4 more sources

Electronically Excited States of Closed-Shell, Cyano-Functionalized Polycyclic Aromatic Hydrocarbon Anions

open access: yesChemistry, 2021
Few anions exhibit electronically excited states, and, if they do, the one or two possible excitations typically transpire beyond the visible spectrum into the near-infrared.
Taylor J. Santaloci, Ryan C. Fortenberry
doaj   +1 more source

Home - About - Disclaimer - Privacy