Results 61 to 70 of about 13,043 (174)

Isomerism of CH2SO: Accurate structural, energetic, and spectroscopic characterization

Journal of Computational Chemistry, Volume 45, Issue 11, Page 777-786, April 30, 2024.
What is the next sulfur‐containing molecule that will be detected in space? Guided by the experimental data on the cis‐/trans‐HC(O)SH conformers, the structural and spectroscopic properties of cis‐/trans‐HC(S)OH have been accurately determined using state‐of‐the‐art quantum‐chemical approaches. Abstract A recent work [Ye et al. Mon. Not. R. Astron. Soc.
Cristina Puzzarini, Hexu Ye, Silvia Alessandrini   +2 more
wiley   +1 more source

Probing dust grain evolution in IM Lupi's circumstellar disc. Multi-wavelength observations and modelling of the dust disc [PDF]

, 2008
We present a panchromatic study, involving a multiple technique approach, of the circumstellar disc surrounding the T Tauri star IM Lupi (Sz 82). We have undertaken a comprehensive observational study of IM Lupi using photometry, spectroscopy, millimetre
Allard, Andrews, Apai, B. Stecklum, Baraffe, Barrière-Fouchet, Batalha, Batalha, Beckwith, Beckwith, Bjorkman, Blum, Bouwman, Brauer, Bruggeman, C. A. Grady, C. Pinte, Chiang, D'Alessio, D'Alessio, D. C. Hines, D. L. Padgett, D. Lommen, Dorschner, Dubrulle, Dullemond, Dullemond, E. F. van Dishoeck, Evans, F. Ménard, Finkenzeller, Fitzgerald, Fromang, Furlan, Furlan, G. A. Blake, G. Duchêne, G. Schneider, Gahm, Ghez, Gilliland, Goldreich, Graham, Hanner, Hartmann, Harvey, Harvey, Henning, Henning, Hughes, Hughes, Irvine, J. C. Augereau, J. Kessler-Silacci, J. Krist, J. Olofsson, Jaeger, Johansen, Johansen, Jones, K. Pontoppidan, K. R. Stapelfeldt, Kemper, Kessler-Silacci, Koike, Lay, Lommen, Lucy, M. D. Perrin, M. Silverstone, Martin, Mathis, Merín, Min, Molster, Nuernberger, O. Panić, Ormel, Pinte, Pinte, Przygodda, Ratzka, Reipurth, Rodmann, S. Wolf, Safronov, Schegerer, Schegerer, Schneider, Schneider, Schneider, Schräpler, Servoin, T. Henning, Tachihara, Thamm, Toomre, Valenti, van Boekel, van Boekel, van Kempen, Voshchinnikov, Weidenschilling, Wichmann, Wichmann, Wright   +105 more
core   +5 more sources

Chiroptical properties of membrane glycerophospholipids and their chiral backbones

Chirality, Volume 36, Issue 3, March 2024.
Examination of the interaction of glycerophospholipids with circularly polarized light suggests that direct induction of symmetry breaking to membrane lipids by chiral photons is unlikely. However, anisotropy spectra of certain analogs indicate potential alternative mechanisms for the origins of membrane lipid homochirality, providing insights into the
Jana Bocková, Adrien D. Garcia, Nykola C. Jones, Søren V. Hoffmann, Cornelia Meinert   +4 more
wiley   +1 more source

Are Giant Planets Forming Around HR 4796A? [PDF]

, 2003
We have obtained FUSE and HST STIS spectra of HR 4796A, a nearby 8 Myr old main sequence star that possesses a dusty circumstellar disk whose inclination has been constrained from high resolution near-infrared observations to be ~17 deg from edge-on.
Abgrall H., Augereau J. C., C. H. Chen, Holweger H., I. Kamp, Liseau R., Liseau R.   +6 more
core   +1 more source

L1448 IRS3B: Dust Polarization Aligned with Spiral Features, Tracing Gas Flows

The Astrophysical Journal
Circumstellar disk dust polarization in the (sub)millimeter is, for the most part, not from dust grain alignment with magnetic fields but rather indicative of a combination of dust self-scattering with a yet unknown alignment mechanism that is consistent
Leslie W. Looney, Zhe-Yu Daniel Lin, Zhi-Yun Li, John J. Tobin, Martin Radecki, Syzygy Butte, Ian W. Stephens, Manuel Fernández-López, Haifeng Yang, Nickalas K. Reynolds, Patrick Sheehan, Woojin Kwon, Rachel Harrison, Allen North   +13 more
doaj   +1 more source

Nanosilicates and molecular silicate dust species: properties and observational prospects

Frontiers in Astronomy and Space Sciences
Silicate dust is found in a wide range of astrophysical environments. Nucleation and growth of silicate dust grains in circumstellar environments likely involves species with diameters ranging from <1 nm (molecular silicates) to a few nanometers ...
Stefan T. Bromley, Stefan T. Bromley
doaj   +1 more source

Dust Echoes from Luminous Fast Blue Optical Transients

The Astrophysical Journal, 2023
Luminous fast blue optical transients (LFBOTs) such as AT2018cow form a rare class of engine-powered explosions of uncertain origin. A hallmark feature of these events is radio/millimeter synchrotron emission powered by the interaction of fast ≳0.1 c ...
Brian D. Metzger, Daniel A. Perley
doaj   +1 more source

The M-type stars [PDF]

The papers in this volume cover the following topics: (1) basic properties and photometric variability of M and related stars; (2) spectroscopy and nonthermal processes; (3) circumstellar radio molecular lines; (4) circumstellar shells, the formation of ...
Goldberg, Leo, Johnson, Hollis Ralph, Jordan, Stuart, Pecker, Jean-Claude, Querci, Francois R., Thomas, Richard   +5 more
core   +1 more source

Seed particle formation for silicate dust condensation by SiO nucleation [PDF]

, 2013
Clustering of the abundant SiO molecules has been discussed as a possible mechanism of seed particle formation for silicate dust in stellar outflows with an oxygen rich element mixture.
Gail, H. -P., Pucci, A., Tamanai, A., Wetzel, S.   +3 more
core   +1 more source

A Theoretical Study of Carbon Nanotube Formation: Carriers of the Diffuse Interstellar Bands?

The Astrophysical Journal
Density functional theory (DFT) calculations have been conducted to probe the formation of carbon nanotubes (CNTs) from graphitic sheets in the presence of a simulated circumstellar shock wave.
A. Thakur, P. J. Lohr, J. J. Bernal, A. Asaduzzaman, K. Muralidharan, T. J. Zega, L. M. Ziurys   +6 more
doaj   +1 more source