Results 11 to 20 of about 16,662 (218)
Dust processing in photodissociation regions [PDF]
Astronomy & Astrophysics, 2008 Mid-infrared spectroscopy of dense illuminated ridges (or photodissociation regions, PDRs) suggests dust evolution. Such evolution must be reflected in the gas physical properties through processes like photo-electric heating or H_2 formation. With Spitzer Infrared Spectrograph (IRS) and ISOCAM data, we study the mid-IR emission of closeby, well known ...
Compiegne, M. +3 more
openaire +3 more sources
Photodissociation regions and star formation in the Carina nebula [PDF]
Monthly Notices of the Royal Astronomical Society, 2002 14 pages, 12 figures. Accepted by MNRAS.
Rathborne, Jill +5 more
openaire +5 more sources
PDFCHEM: Fast simulations of the chemical ISM using probability distributions [PDF]
EPJ Web of Conferences, 2022 We present PDFCHEM, a new numerical method able to compute the photodissociation region (PDR) chemistry of large-scale inhomogeneous ISM regions using probability distributions of physical parameters as an input.
Bisbas Thomas G. +3 more
doaj +1 more source
Photodissociation of singlet oxygen in the UV region [PDF]
Physical Chemistry Chemical Physics, 2014 Photodissociation of singlet oxygen, O2 a(1)Δg, by ultraviolet radiation in the region from 200 to 240 nm has been investigated using velocity map imaging of the atomic oxygen photofragments. Singlet oxygen molecules are generated in a pulsed discharge and studied by one-laser photodissociation and detection around 226 nm as well as two color ...
Farooq, Z. +5 more
openaire +4 more sources
Multi-line Observations, Models, and Data Needed to Understand the Nature of UV-irradiated Interstellar Matter [PDF]
EPJ Web of Conferences, 2022 Far-ultraviolet photons from OB-type massive stars regulate the heating, ionization, and chemistry of much of the neutral interstellar gas in star-forming galaxies.
Goicoechea Javier R. +2 more
doaj +1 more source
Chemical complexity in the Horsehead photodissociation region [PDF]
Faraday Discuss., 2014 The interstellar medium is known to be chemically complex. Organic molecules with up to 11 atoms have been detected in the interstellar medium, and are believed to be formed on the ices around dust grains. The ices can be released into the gas-phase either through thermal desorption, when a newly formed star heats the medium around it and completely ...
Guzman, Viviana +7 more
openaire +4 more sources
The PhotoDissociation Region Toolbox: Software and Models for Astrophysical Analysis
The Astronomical Journal, 2022 The PhotoDissociation Region Toolbox provides comprehensive, easy-to-use, public software tools and models that enable an understanding of the interaction of the light of young, luminous, massive stars with the gas and dust in the Milky Way and in other ...
Marc W. Pound, Mark G. Wolfire
doaj +1 more source
MAGNETIC FIELD STRENGTHS IN PHOTODISSOCIATION REGIONS [PDF]
The Astrophysical Journal, 2015 ABSTRACT We measure carbon radio recombination line (RRL) emission at 5.3 toward four H ii regions with the Green Bank Telescope to determine the magnetic field strength in the photodissociation region (PDR) that surrounds the ionized gas.
Dana S. Balser +5 more
openaire +3 more sources
Extended H? emission line sources from UWISH2 [PDF]
, 2015 We present the extended source catalogue for the UKIRT Wide Field Infrared Survey for H2 (UWISH2). The survey is unbiased along the inner Galactic Plane from l ? 357° to l ? 65° and |b| ? 1.5° and covers 209 deg2.
A. S. M. Buckner +28 more
core +3 more sources
The Photodissociation and Ionization Fronts in M17-SW Localized with FIFI-LS on Board SOFIA
The Astrophysical Journal, 2023 To understand star formation rates, studying feedback mechanisms that regulate star formation is necessary. The radiation emitted by nascent massive stars play a significant role in feedback by photodissociating and ionizing their parental molecular ...
Randolf Klein +7 more
doaj +1 more source