Results 81 to 90 of about 51,739 (211)

Adsorption of Helium on Cationic or Anionic Tetracene and Pentacene

Small Structures, Volume 7, Issue 1, January 2026.
How does the arrangement of helium atoms that are adsorbed on tetracene or pentacene ions change with increasing coverage? When does the adsorption layer change from 1D to 2D, and to 3D? Is the transition abrupt? Are the helium atoms localized? Is the arrangement the same for cations and anions? What changes as the acene grows in length?
Miriam Kappe, Florent Calvo, Rasif William, Bilal Rasul, Masoomeh Mahmoodi‐Darian, Paul Scheier, Olof Echt   +6 more
wiley   +1 more source

Nearby Supernova and Cloud Crossing Effects on the Orbits of Small Bodies in the Solar System

The Astrophysical Journal Letters
Supernova (SN) blasts envelop many surrounding stellar systems, transferring kinetic energy to small bodies in the systems. Geologic evidence from ^60 Fe points to recent nearby SN activity within the past several Myr.
Leeanne Smith, Jesse A. Miller, Brian D. Fields   +2 more
doaj   +1 more source

Overlapping Open Clusters NGC 1750 and NGC 1758 behind the Taurus Dark Clouds. II. CCD Photometry in the Vilnius System

Open Astronomy, 2003
Seven-color photometry in the Vilnius system has been obtained for 420 stars down to V = 16 mag in the area containing the overlapping open clusters NGC 1750 and NGC 1758 in Taurus.
Straižys V., Kazlauskas A., Černiauskas A., Boyle R. P., Vrba F. J., Philip A. G. Davis, Laugalys V., Černis K., Smriglio F.   +8 more
doaj   +1 more source

The Spectral Energy Distribution of Self-gravitating Interstellar Clouds I. Spheres

, 2007
We derive the spectral energy distribution (SED) of dusty, isothermal, self gravitating, stable and spherical clouds externally heated by the ambient interstellar radiation field.
Bernard J. P., Bernard J. P., Bonnor W. B., Boulanger F., Chlewicki G., Ebert R., Gail H.-P., Jörg Fischera, Laureijs R. J., Lehtinen K., Lehtinen K., Lehtinen K., Lemke D., Mathis J. S., Mattila K., Michael A. Dopita, Ossenkopf V., Padoan P.   +17 more
core   +1 more source

Interstellar absorptions and shocked clouds towards supernova remnant RX J0852.0-4622

, 2012
We present results of survey of interstellar absorptions towards supernova remnant (SNR) RX J0852.0-4622. The distribution of KI absorbers along the distance of the background stars is indicative of a local region (d100km/s towards three stars and ...
A. F. Iyudin, Aschenbach, Bertin, Bocchino, Borkowski, Braun, Cha, Cha, Cox, Crawford, Crawford, Danks, Draine, Famaey, Friedman, Gredel, Iyudin, Iyudin, Jenkins, Jenkins, Jura, Klein, Kritsuk, Kupka, McKee, N. N. Chugai, Patnaude, Rots, Routly, Savage, Shull, Stanimirović, Sutherland, Tielens, Tsymbal, Wallerstein, Welty, Welty, Welty, Welty, Woermann, Wolfire, Wolfire, Yu. V. Pakhomov   +43 more
core   +1 more source

Observations of the Local Interstellar Cloud [PDF]

International Astronomical Union Colloquium, 1997
AbstractConstraints on the ambient (circumsolar) interstellar medium can be derived from observations of interstellar neutrals or their derivatives in the heliosphere. New results have been recently obtained which, when combined with optical and UV observations of the nearby stars (HST-GHRS, EUVE), remove long-standing contradictions and allow us to ...
openaire   +1 more source

Hydro-chemical study of the evolution of interstellar pre-biotic molecules during the collapse of molecular clouds

, 2012
One of the stumbling blocks for studying the evolution of interstellar molecules is the lack of adequate knowledge of the rate co-efficients of various reactions which take place in the Interstellar medium and molecular clouds.
Ankan Das, Boogert, Chakrabarti, Chakrabarti, Chakrabarti, Cuppen, Das, Fuente, Gibb, Guelin, Ioppolo, Kuan, Liton Majumdar, Sandip K. Chakrabarti, Snyder, Sonali Chakrabarti, Woon   +16 more
core   +1 more source

Theoretical Calculations for the Acidity of Cyanopolyynes HC2n+1N (n = 0–5) in Gas and Aqueous Phases Using Ab initio Methods

ARO-The Scientific Journal of Koya University, 2019
Cyanopolyynes have been found in the interstellar medium, cold dust cloud Taurus Molecular Cloud-1, and the Titan’s atmosphere. Theoretical calculations are carried out to predict gas and aqueous phase acidities of a series of cyanopolyynes acids.
Hassan H. Abdallah
doaj   +1 more source

Life Cycle of Dust in the Magellanic Clouds and the Milky Way

, 2014
To a great extent, our understanding of the life cycle of dust is based on the observational and theoretical studies of the Milky Way and the Magellanic Clouds, which will be the topic of this contribution. Over past years, a large volume of observations
Henning, Thomas, Zhukovska, Svitlana
core   +1 more source

Implications for the formation of Oort cloud-like structures and interstellar comets in dense environments

Astronomy & Astrophysics
Most stars form in dense stellar environments, where frequent close encounters can strongly perturb and reshape the early architecture of planetary systems.
Torres Santiago
doaj   +1 more source