Results 91 to 100 of about 678,354 (195)

Modification of spectral properties of the PAH cations upon cluster formation

Astronomy & Astrophysics
Context. Polycyclic aromatic hydrocarbons (PAHs) and their clusters are widely invoked as carriers of unidentified infrared bands (UIBs) and are abundant in the interstellar medium (ISM).
Reider Anna Maria, Schmidt Martin, Kappe Miriam, Reichegger Johannes, Ončák Milan, Lushchikova Olga V., Krasnokutski Serge A., Scheier Paul   +7 more
doaj   +1 more source

The Diffuse Interstellar Bands: Solving a Century Old Problem [PDF]

, 2017
The Diffuse Interstellar Bands (DIBs) are a set of apporoximately 500 absorption bands that are seen in the spectra of reddened stars (i.e., stars obscured by the presence of interstellar clouds in their line of sight).
Salama, Farid
core  

A theory of the diffuse interstellar bands [PDF]

Monthly Notices of the Royal Astronomical Society, 1993
A theory is presented in which the carriers of the diffuse interstellar bands are members of an unspecified class of molecular hydrides denoted XH m , (m = 0, 1,..., m max ). The bands are carried by several different species which differ in m, the number of hydrogen atoms they bear.
openaire   +1 more source

Przezroczystość Wszechświata i międzygwiazdowe pasma rozmyte jako wyzwania dla rozwoju wiedzy przyrodniczej

Zagadnienia Filozoficzne w Nauce, 2017
In general introduction few examples of astronomical explanations of well-known and common local physical phenomena are presented. They are meant to show that it is often much easier to explain commonly experienced phenomena by investigating the behavior
Bogdan Wszołek
doaj  

Diffuse Interstellar Bands – The Unidentified Part of the Interstellar Absorption Spectrum [PDF]

Symposium - International Astronomical Union, 1989
The unidentified (since 1921) diffuse interstellar bands (DIBs) are discussed together with their relations to other interstellar absorptions sucn as: continuous extinction, polarization and atomic or molecular absorption lines. It is shown that DIBs do not form the absorption spectrum of one agent, but probably of several (3 or more).
openaire   +1 more source

Where Have All the Sulfur Atoms Gone? Polycyclic Aromatic Hydrocarbon as a Possible Sink for the Missing Sulfur in the Interstellar Medium. I. The C–S Band Strengths

The Astrophysical Journal
Despite its biogenic and astrochemical importance, sulfur (S), the 10th most abundant element in the interstellar medium (ISM) with a total abundance of S/H ≈ 2.2 × 10 ^−5 , largely remains undetected in molecular clouds.
X. J. Yang, Lijun Hua, Aigen Li
doaj   +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

Atacama Large Aperture Submillimeter Telescope (AtLAST) science: Our Galaxy [version 2; peer review: 2 approved]

Open Research Europe
As we learn more about the multi-scale interstellar medium (ISM) of our Galaxy, we develop a greater understanding for the complex relationships between the large-scale diffuse gas and dust in Giant Molecular Clouds (GMCs), how it moves, how it is ...
Pamela Klaassen, Maria Beltrán, Alessio Traficante, Mark Booth, Kate Pattle, Jonathan Marshall, Joshua Lovell, Brandt Gaches, Alvaro Hacar, Nicolas Peretto, Caroline Bot, Doris Arzoumanian, Thomas Stanke, Gaspard Duchêne, Ana Duarte Cabral, Antonio Hales, David Eden, Patricia Luppe, Jens Kauffmann, Elena Redaelli, Sebastian Marino, Álvaro Sánchez-Monge, Andrew Rigby, Dmitry Semenov, Eugenio Schisano, Mark Thompson, Silvia Spezzano, Claudia Cicone, Friedrich Wyrowski, Martin Cordiner, Tony Mroczkowski, Doug Johnstone, Luca Di Mascolo, Minju Lee, Eelco van Kampen, Thomas Maccarone, Daizhong Liu, Matthew Smith, Amélie Saintonge, Sven Wedemeyer, Alexander Thelen   +40 more
doaj   +1 more source

Atacama Large Aperture Submillimeter Telescope (AtLAST) science: Our Galaxy [version 1; peer review: 2 approved]

Open Research Europe
As we learn more about the multi-scale interstellar medium (ISM) of our Galaxy, we develop a greater understanding for the complex relationships between the large-scale diffuse gas and dust in Giant Molecular Clouds (GMCs), how it moves, how it is ...
Pamela Klaassen, Maria Beltrán, Alessio Traficante, Mark Booth, Kate Pattle, Jonathan Marshall, Joshua Lovell, Brandt Gaches, Alvaro Hacar, Nicolas Peretto, Caroline Bot, Doris Arzoumanian, Thomas Stanke, Gaspard Duchêne, Ana Duarte Cabral, Antonio Hales, David Eden, Patricia Luppe, Jens Kauffmann, Elena Redaelli, Sebastian Marino, Álvaro Sánchez-Monge, Andrew Rigby, Dmitry Semenov, Eugenio Schisano, Mark Thompson, Silvia Spezzano, Claudia Cicone, Friedrich Wyrowski, Martin Cordiner, Tony Mroczkowski, Doug Johnstone, Luca Di Mascolo, Minju Lee, Eelco van Kampen, Thomas Maccarone, Daizhong Liu, Matthew Smith, Amélie Saintonge, Sven Wedemeyer, Alexander Thelen   +40 more
doaj   +1 more source

Large-scale radio bubbles around the black hole transient V4641 Sgr

Astronomy & Astrophysics
Context. Black holes (BHs) in microquasars can launch powerful relativistic jets that have the capacity to travel up to several parsecs from the compact object and interact with the interstellar medium.
Grollimund N., Corbel S., Fender R., Matthews J. H., Heywood I., Cowie F. J., Hughes A. K., Carotenuto F., Motta S. E., Woudt P.   +9 more
doaj   +1 more source