Results 101 to 110 of about 54,240 (242)

Photodissociation of OH in Interstellar Clouds

The Astrophysical Journal, 1984
Calculations are presented of the lifetime of OH against photodissociation by the interstellar radiation field as a function of depth into interstellar clouds containing grains of various scattering properties. The effectiveness of the different photodissociation channels changes with depth into a cloud. Absorption into the repulsive - state is usually
Dishoeck, E.F. van, Dalgarno, A.
openaire   +3 more sources

Anomalous Neutral Hydrogen Column Densities in Local Interstellar Medium Clouds

The Astrophysical Journal
Analysis of high-resolution spectra of the hydrogen and deuterium Ly α lines provides measurements of interstellar neutral hydrogen column densities N (H i ) to 113 stars within 50 pc of the Sun. Plots of N (H i ) versus distance through the LIC, G, Mic,
Jeffrey L. Linsky, Seth Redfield
doaj   +1 more source

Random independent splitting model for the mass spectrum of protostars and interstellar clouds [PDF]

Mathematical model for mass spectra of protostars and interstellar ...
Marcus, A. H.
core   +1 more source

Search for Interstellar Water in the Translucent Molecular Cloud toward HD 154368 [PDF]

, 1998
Marco Spaans, David A. Neufeld, S. Lepp, Gary J. Melnick, J. R. Stauffer   +4 more
openalex   +1 more source

Diffuse interstellar clouds associated with dark clouds

The Astrophysical Journal, 1982
Measurements of CH emission at 9 cm toward the bright stars ..cap alpha.. Cam and kappa Cas and from dark clouds near the stars reveal an association between diffuse clouds and dark clouds. Here the term diffuse clouds refers to clouds seen in optical absorption; the term dark clouds refers to opaque regions on the Palomar Sky Survey observed through ...
S. R. Federman, R. F. Willson
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

On the Abiotic Origin of Dimethyl Sulfide: Discovery of Dimethyl Sulfide in the Interstellar Medium

The Astrophysical Journal Letters
Following the discovery of dimethyl sulfide (DMS; CH _3 SCH _3 ) signatures in comet 67P/Churyumov–Gerasimenko, we report the first detection of this organosulfur species in the interstellar medium during the exploration of an ultradeep molecular line ...
Miguel Sanz-Novo, Víctor M. Rivilla, Christian P. Endres, Valerio Lattanzi, Izaskun Jiménez-Serra, Laura Colzi, Shaoshan Zeng, Andrés Megías, Álvaro López-Gallifa, Antonio Martínez-Henares, David San Andrés, Belén Tercero, Pablo de Vicente, Sergio Martín, Miguel A. Requena-Torres, Paola Caselli, Jesús Martín-Pintado   +16 more
doaj   +1 more source

Physical-chemical processes in a protoplanetary cloud [PDF]

Physical-chemical processes in a protoplanetary cloud are discussed. The following subject areas are covered: (1) characteristics of the chemical composition of molecular interstellar clouds; (2) properties and physico-chemical process in the genesis of ...
Lavrukhina, Avgusta K.
core   +1 more source

Modelling the dust emission from dense interstellar clouds: disentangling the effects of radiative transfer and dust properties [PDF]

, 2012
N. Ysard, M. Juvela, K. Demyk, V. Guillet, A. Abergel, J.-P. Bernard, J. Malinen, C. Mény, L. Montier, D. Paradis, I. Ristorcelli, L. Verstraete   +11 more
openalex   +1 more source

The Multiwavelength Extinction Law and Its Variation in the Coalsack Molecular Cloud Based on the Gaia, APASS, SMSS, 2MASS, GLIMPSE, and WISE Surveys

The Astrophysical Journal
Accurate interpretation of observations relies on the interstellar dust extinction law, which also serves as a powerful diagnostic for probing dust properties.
Juan Deng, Shu Wang, Biwei Jiang, He Zhao   +3 more
doaj   +1 more source