Search Results - "WOLFIRE, Mark"

Photodissociation and X-Ray-Dominated Regions by Wolfire, Mark G, Vallini, Livia, Chevance, Mélanie

“…The radiation from stars and active galactic nuclei (AGNs) creates photodissociation regions (PDRs) and X-ray-dominated regions (XDRs), where the chemistry or…”
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The Cosmic-Ray Ionization Rate in the Galactic Disk, as Determined from Observations of Molecular Ions by Neufeld, David A., Wolfire, Mark G.

“…We have obtained estimates for the cosmic-ray ionization rate (CRIR) in the Galactic disk, using a detailed model for the physics and chemistry of diffuse…”
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The PhotoDissociation Region Toolbox: Software and Models for Astrophysical Analysis by Pound, Marc W., Wolfire, Mark G.

“…The PhotoDissociation Region Toolbox provides comprehensive, easy-to-use, public software tools and models that enable an understanding of the interaction of…”
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A Simple and Accurate Network for Hydrogen and Carbon Chemistry in the Interstellar Medium by Gong, Munan, Ostriker, Eve C., Wolfire, Mark G.

“…Chemistry plays an important role in the interstellar medium (ISM), regulating the heating and cooling of the gas and determining abundances of molecular…”
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The Dark Molecular Gas by Wolfire, Mark G, Hollenbach, David, McKee, Christopher F

“…The mass of molecular gas in an interstellar cloud is often measured using line emission from low rotational levels of CO, which are sensitive to the CO mass,…”
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The CO-to-H2 Conversion Factor by Bolatto, Alberto D, Wolfire, Mark, Leroy, Adam K

“…CO line emission represents the most accessible and widely used tracer of the molecular ISM. This renders the translation of observed CO intensity into total H…”
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THE CHEMISTRY OF INTERSTELLAR ARGONIUM AND OTHER PROBES OF THE MOLECULAR FRACTION IN DIFFUSE CLOUDS by Neufeld, David A., Wolfire, Mark G.

“…ABSTRACT We present a general parameter study in which the abundance of interstellar argonium (ArH+) is predicted using a model for the physics and chemistry…”
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The PAH Emission Characteristics of the Reflection Nebula NGC 2023 by Peeters, Els, Bauschlicher, Charles W., Allamandola, Louis J., Tielens, Alexander G. G. M., Ricca, Alessandra, Wolfire, Mark G.

“…We present 5-20 m spectral maps of the reflection nebula NGC 2023 obtained with the Infrared Spectrograph SL and SH modes on board the Spitzer Space Telescope,…”
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The Chemistry of Interstellar Molecules Containing the Halogen Elements by Neufeld, David A, Wolfire, Mark G

“…Although they are only minor constituents of the interstellar medium, halogen-containing molecules are of special interest because of their unique…”
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[Si II], [Fe II], [C II], and H2 Emission from Massive Star-forming Regions by Kaufman, Michael J, Wolfire, Mark. G, Hollenbach, David J

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The Chemistry of Chlorine-bearing Species in the Diffuse Interstellar Medium, and New SOFIA/GREAT Observations of HCl by Neufeld, David A., Wiesemeyer, Helmut, Wolfire, Mark J., Jacob, Arshia M., Buchbender, Christof, Gerin, Maryvonne, Gupta, Harshal, Güsten, Rolf, Schilke, Peter

“…We have revisited the chemistry of chlorine-bearing species in the diffuse interstellar medium with new observations of the HCl + molecular ion and new…”
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The Densities in Diffuse and Translucent Molecular Clouds: Estimates from Observations of C2 and from Three-dimensional Extinction Maps by Neufeld, David A., Welty, Daniel E., Ivlev, Alexei V., Caselli, Paola, Edenhofer, Gordian, Indriolo, Nick, Obolentseva, Marta, Silsbee, Kedron, Sonnentrucker, Paule, Wolfire, Mark G.

“…Newly computed collisional rate coefficients for the excitation of C2 in collisions with H2, presented recently by Najar & Kalugina, are significantly larger…”
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Formation of the methyl cation by photochemistry in a protoplanetary disk by Berné, Olivier, Martin-Drumel, Marie-Aline, Schroetter, Ilane, Goicoechea, Javier R., Jacovella, Ugo, Gans, Bérenger, Dartois, Emmanuel, Coudert, Laurent H., Bergin, Edwin, Alarcon, Felipe, Cami, Jan, Roueff, Evelyne, Black, John H., Asvany, Oskar, Habart, Emilie, Peeters, Els, Canin, Amelie, Trahin, Boris, Joblin, Christine, Schlemmer, Stephan, Thorwirth, Sven, Cernicharo, Jose, Gerin, Maryvonne, Tielens, Alexander, Zannese, Marion, Abergel, Alain, Bernard-Salas, Jeronimo, Boersma, Christiaan, Bron, Emeric, Chown, Ryan, Cuadrado, Sara, Dicken, Daniel, Elyajouri, Meriem, Fuente, Asunción, Gordon, Karl D., Issa, Lina, Kannavou, Olga, Khan, Baria, Lacinbala, Ozan, Languignon, David, Le Gal, Romane, Maragkoudakis, Alexandros, Meshaka, Raphael, Okada, Yoko, Onaka, Takashi, Pasquini, Sofia, Pound, Marc W., Robberto, Massimo, Röllig, Markus, Schefter, Bethany, Schirmer, Thiébaut, Sidhu, Ameek, Tabone, Benoit, Van De Putte, Dries, Vicente, Sílvia, Wolfire, Mark G.

“…Forty years ago, it was proposed that gas-phase organic chemistry in the interstellar medium can be initiated by the methyl cation CH 3 + (refs. 1 – 3 ), but…”
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The Structure of Dark Molecular Gas in the Galaxy. II. Physical State of "CO-dark" Gas in the Perseus Arm by Busch, Michael P., Allen, Ronald J., Engelke, Philip D., Hogg, David E., Neufeld, David A., Wolfire, Mark G.

“…We report the results from a new, highly sensitive (ΔTmb ∼ 3 mK) survey for thermal OH emission at 1665 and 1667 MHz over a dense, 9 × 9 pixel grid covering a…”
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SOFIA FEEDBACK Survey: The Pillars of Creation in [C ii] and Molecular Lines by Karim, Ramsey L., Pound, Marc W., Tielens, Alexander G. G. M., Tiwari, Maitraiyee, Bonne, Lars, Wolfire, Mark G., Schneider, Nicola, Kavak, Ümit, Mundy, Lee G., Simon, Robert, Güsten, Rolf, Stutzki, Jürgen, Wyrowski, Friedrich, Honingh, Netty

“…We investigate the physical structure and conditions of photodissociation regions (PDRs) and molecular gas within the Pillars of Creation in the Eagle Nebula…”
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Velocity-resolved [ ] Emission from Cold Diffuse Clouds in the Interstellar Medium by Goldsmith, Paul F., Pineda, Jorge L., Neufeld, David A., Wolfire, Mark G., Risacher, Christophe, Simon, Robert

“…We have combined emission from the 158 m fine structure transition of C+ observed with the GREAT and upGREAT instruments on SOFIA with 21 cm absorption spectra…”
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Neutral Atomic Phases of the Interstellar Medium in the Galaxy by Wolfire, Mark G, McKee, Christopher F, Hollenbach, David, Tielens, A. G. G. M

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Experimental Determination of the Dissociative Recombination Rate Coefficient for Rotationally Cold CH+ and Its Implications for Diffuse Cloud Chemistry by Paul, Daniel, Grieser, Manfred, Grussie, Florian, von Hahn, Robert, Isberner, Leonard W., Kálosi, Ábel, Krantz, Claude, Kreckel, Holger, Müll, Damian, Neufeld, David A., Savin, Daniel W., Schippers, Stefan, Wilhelm, Patrick, Wolf, Andreas, Wolfire, Mark G., Novotný, Oldřich

“…Observations of CH + are used to trace the physical properties of diffuse clouds, but this requires an accurate understanding of the underlying CH + chemistry…”
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First Results from the Herschel and ALMA Spectroscopic Surveys of the SMC: The Relationship between [C ii]-bright Gas and CO-bright Gas at Low Metallicity by Jameson, Katherine E., Bolatto, Alberto D., Wolfire, Mark, Warren, Steven R., Herrera-Camus, Rodrigo, Croxall, Kevin, Pellegrini, Eric, Smith, John-David, Rubio, Monica, Indebetouw, Remy, Israel, Frank P., Meixner, Margaret, Roman-Duval, Julia, van Loon, Jacco Th, Muller, Erik, Verdugo, Celia, Zinnecker, Hans, Okada, Yoko

“…The Small Magellanic Cloud (SMC) provides the only laboratory to study the structure of molecular gas at high resolution and low metallicity. We present…”
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Modeling Ionized Gas in the Small Magellanic Cloud: The Wolf–Rayet Nebula N76 by Tarantino, Elizabeth, Bolatto, Alberto D., Indebetouw, Rémy, Rubio, Mónica, Sandstrom, Karin M., Smith, J.-D T., Stapleton, Daniel, Wolfire, Mark

“…We present Cloudy modeling of infrared emission lines in the Wolf–Rayet (WR) nebula N76 caused by one of the most luminous and hottest WR stars in the low…”
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