Results 101 to 110 of about 21,871 (195)

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

PHANGS-ML: The Universal Relation between PAH Band and Optical Line Ratios across Nearby Star-forming Galaxies

The Astrophysical Journal
The structure and chemistry of the dusty interstellar medium (ISM) are shaped by complex processes that depend on the local radiation field, gas composition, and dust grain properties. Of particular importance are polycyclic aromatic hydrocarbons (PAHs),
Dalya Baron, Karin M. Sandstrom, Jessica Sutter, Hamid Hassani, Brent Groves, Adam K. Leroy, Eva Schinnerer, Médéric Boquien, Matilde Brazzini, Jérémy Chastenet, Daniel A. Dale, Oleg V. Egorov, Simon C. O. Glover, Ralf S. Klessen, Debosmita Pathak, Erik Rosolowsky, Frank Bigiel, Mélanie Chevance, Kathryn Grasha, Annie Hughes, J. Eduardo Méndez-Delgado, Jérôme Pety, Thomas G. Williams, Stephen Hannon, Sumit K. Sarbadhicary   +24 more
doaj   +1 more source

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

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   +1 more source

Unusual relative strengths of the diffuse interstellar bands in some interstellar dust clouds [PDF]

Some of the diffuse interstellar features (DIBs) in the spectra of certain stars at high galactic latitudes (1 is greater than 15 degrees) are unusually weak or absent while others have the strength expected for their color excess.
Krelowski, J., Walker, G. A. H.
core   +1 more source

Optical spectroscopy of IRAS sources with infrared emission bands. 1: IRAS 21282+5050 and the diffuse interstellar bands [PDF]

Spectroscopy of the starlike optical counterpart to IRAS 21282+5050, a source with the hydrocarbon infrared emission band spectrum, shows an 07(f)-(WC11) planetary nebula nucleus suffering an extinction of 5.7 mag. Emission line widths in the WC spectrum
Cohen, Martin, Jones, B. F.
core   +1 more source

Ionized polycyclic aromatic hydrocarbons in space [PDF]

The mid-infrared spectrum of a continuously increasing number of stellar objects, planetary and reflection nebulae, H-II regions and extragalactic sources show a distinctive set of broad emission features at 3.3, 3.4, 6.2, 7.7, 8.6, and 11.3 micron known
Allamandola, Louis J., Barker, J., Barker, J., Barker, J., Barker, J., Crawford, M., Tielens, Alexander G. G. M., Vanderzwet, G.   +7 more
core   +1 more source

The ESO Diffuse Interstellar Bands Large Exploration Survey: EDIBLES I. Project description, survey sample and quality assessment. [PDF]

Astron Astrophys, 2017
Cox NLJ, Cami J, Farhang A, Smoker J, Monreal-Ibero A, Lallement R, Sarre PJ, Marshall CCM, Smith KT, Evans CJ, Royer P, Linnartz H, Cordiner MA, Joblin C, van Loon JT, Foing BH, Bhatt NH, Bron E, Elyajouri M, de Koter A, Ehrenfreund P, Javadi A, Kaper L, Khosroshadi HG, Laverick M, Le Petit F, Mulas G, Roueff E, Salama F, Spaans M.   +29 more
europepmc   +1 more source

Extended correlations between diffuse interstellar bands

Astronomy & Astrophysics
The systematic analysis of the correlations between diffuse interstellar bands (DIBs) is extended to weak DIBs through the comprehensive catalogue of the Apache Peak Observatory (APO) of 559 DIBs in 25 lines of sight with diverse interstellar properties.
openaire   +2 more sources

Diffuse Interstellar Bands and Their Families

, 2006
Diffuse interstellar bands (DIBs) still await an explanation. One expects that some progress in this field will be possible when all the known DIBs are divided into families in such a way that only one carrier is responsible for all bands belonging to the given family.
openaire   +2 more sources

Probing the diffuse interstellar medium with diffuse interstellar bands

, 2014
This work investigates the small scale structure of the Diffuse Interstellar Medium. To do this optical spectroscopy is used to obtain spectra of early type stars which are used as background targets with which the Diffuse Interstellar Medium (ISM) is probed.
openaire