Results 1 to 10 of about 8,590 (143)

Astrochemistry of sub-millimeter sources in Orion [PDF]

, 2003
Cornerstone molecules (CO, H_2CO, CH_3OH, HCN, HNC, CN, CS, SO) were observed toward seven sub-millimeter bright sources in the Orion molecular cloud in order to quantify the range of conditions for which individual molecular line tracers provide ...
Doug Johnstone, A. M. S. Boonman, E. F. van Dishoeck   +2 more
core   +6 more sources

Is Phenylnitrene a Missing Link in the Formation of Polycyclic Aromatic Nitrogen Heterocycles? [PDF]

Angew Chem Int Ed Engl
A new formation pathway for polycyclic aromatic nitrogen heterocycles (PANHs) has been found. The reaction of phenylnitrene and the propargyl radical leads to quinoline, proving that nitrenes are suitable precursors for nitrogen incorporation mechanisms.
Arns R, McClish R, Hemberger P, Bodi A, Bouwman J, Kasper T, Schleier D.   +6 more
europepmc   +2 more sources

Charge State Influence on Stability and Isomerism in Dehydrogenated PAHs: Insights from Anthracene, Acridine, and Phenazine. [PDF]

Chemphyschem
The ionization of anthracene, acridine, and phenazine has been explored, along with the removal of one and two hydrogen atoms, to provide valuable information for astrochemists and to understand the behavior of the resulting structures and their electronic reorganization. Abstract In this study, we systematically explored the stability and isomerism of
Zghida K, Hamza Reguig F, Alcamí M, Mokhtar Lamsabhi A.   +3 more
europepmc   +2 more sources

The Genuine Carbene Conundrum. [PDF]

Chemistry
From fleeting intermediates to well‐defined molecular structures, carbenes (neutral divalent carbon) remind us that the most reactive ideas often make a large impact. Despite their wide‐ranging applications, the direct characterization of these reactive species remains a persistent experimental challenge.
Sawyer B, Peltier JL, Jazzar R.
europepmc   +2 more sources

Aromatic hydrocarbons, diamonds, and fullerenes in interstellar space: puzzles to be solved by laboratory and theoretical astrochemistry [PDF]

, 2001
New research is presented, and previous research is reviewed, on the emission and absorption of interstellar aromatic hydrocarbons. Emission from aromatic hydrocarbons dominate the mid-infrared emission of many galaxies, including our own Milky Way ...
K. Sellgren
openalex   +4 more sources

Astrochemistry: overview and challenges [PDF]

, 2017
This paper provides a brief overview of the journey of molecules through the Cosmos, from local diffuse interstellar clouds and PDRs to distant galaxies, and from cold dark clouds to hot star-forming cores, protoplanetary disks, planetesimals and ...
van Dishoeck, Ewine F.
core   +3 more sources

Recommended Thermal Rate Coefficients for the C + H$_3^+$ Reaction and Some Astrochemical Implications [PDF]

, 2016
We have incorporated our experimentally derived thermal rate coefficients for C + H$_3^+$ forming CH$^+$ and CH$_2^+$ into a commonly used astrochemical model.
Buzard, C. F., de Ruette, N., Miller, K. A., O'Connor, A. P., Savin, D. W., Urbain, X., Vissapragada, S.   +6 more
core   +3 more sources

Grain Surface Models and Data for Astrochemistry [PDF]

, 2017
The cross-disciplinary field of astrochemistry exists to understand the formation, destruction, and survival of molecules in astrophysical environments. Molecules in space are synthesized via a large variety of gas-phase reactions, and reactions on dust ...
A. Al-Halabi, A. Al-Halabi, A. Al-Halabi, A. Bacmann, A. Belloche, A. Belloche, A. Dalgarno, A. Dutrey, A. Leger, A. Lipshtat, A. McKellar, A. Nagaoka, A. Nagaoka, A. Pedersen, A. Rimola, A. Stutz, A. Tielens, A. Wolff, A.A. Boogert, A.E. Douglas, A.G.G.M. Tielens, A.G.G.M. Tielens, A.G.G.M. Tielens, A.I. Vasyunin, A.I. Vasyunin, A.S. Bolina, A.S. Bolina, A.S. Bolina, A.S. Eddington, A.V. Ivlev, B. Lepetit, B.T. Draine, B.T. Draine, C. Arasa, C. Arasa, C. Arasa, C. Chyba, C. Eckart, C. Vastel, C. Walsh, C. Walsh, C.M. Leung, D. Field, D. Hollenbach, D. McElroy, D. Semenov, D. Semenov, D.A. Adriaens, D.E. Woon, D.H. Parker, D.J. Hollenbach, D.P. Ruffle, D.P. Ruffle, D.R. Bates, D.T. Gillespie, E. Anders, E. Congiu, E. Gonzalez-Lavado, E. Herbst, E. Herbst, E. Herbst, E. Herbst, E. Herbst, E. M. Penteado, E. Wigner, E.A. Bergin, E.C. Fayolle, E.C. Fayolle, E.C. Fayolle, E.F. Dishoeck van, E.F. Dishoeck van, E.K. Campbell, E.M. Penteado, E.R. Batista, F. Dulieu, F. Mispelaer, F.L. Schöier, G. Cooper, G. Fedoseev, G. Nyman, G.A. Cruz-Diaz, G.A. Cruz-Diaz, G.A. Cruz-Diaz, G.M. Muñoz Caro, G.W. Fuchs, G.W. Fuchs, H. Chaabouni, H. Hidaka, H. Hidaka, H. Hidaka, H. Linnartz, H. M. Cuppen, H.J. Fraser, H.J. Fraser, H.M. Cuppen, H.M. Cuppen, H.M. Cuppen, J. Bossa, J. Cami, J. Cernicharo, J. Fillion, J. Gonzalez, J. He, J. He, J. Kalvāns, J. Koning, J. Kästner, J. Zhen, J.A. Noble, J.A. Noble, J.A. Noble, J.B. Bergner, J.B. Bossa, J.E. Elsila, J.K. Jørgensen, J.M.C. Rawlings, J.R. Burke, K. Acharyya, K. Acharyya, K. Furuya, K. Furuya, K. Hiraoka, K. Hiraoka, K. Hiraoka, K. Hiraoka, K. Isokoski, K. Kuwahata, K. Kvenvolden, K. Willacy, K. Willacy, K.I. Öberg, K.I. Öberg, K.I. Öberg, K.I. Öberg, K.I. Öberg, K.I. Öberg, K.I. Öberg, K.I. Öberg, K.J. Chuang, K.M. Pontoppidan, K.M. Pontoppidan, L. Allamandola, L. Amiaud, L.B. D’Hendecourt, L.B. D’Hendecourt, L.B. D’Hendecourt, L.E. Snyder, L.J. Karssemeijer, L.J. Karssemeijer, L.J. Karssemeijer, L.J. Karssemeijer, L.T. Greenberg, M. Accolla, M. Agúndez, M. Allen, M. Bertin, M. Bertin, M. Bertin, M. Minissale, M. Minissale, M. Monge-Palacios, M. Monge-Palacios, M.B. Bell, M.C. Hemert van, M.P. Collings, M.P. Collings, M.P. Collings, M.S. Westley, M.S. Westley, N. Balucani, N. Katz, N. Lippok, N. Miyauchi, N. Nishi, N. Watanabe, N. Watanabe, N. Watanabe, N. Watanabe, N.F.W. Ligterink, N.G. Adams, N.J. Mason, N.J.B. Green, O. Berné, O. Biham, P. Caselli, P. Ehrenfreund, P. Swings, P. Theule, P.A. Gerakines, P.D. Brown, P.M. Woods, Q. Chang, Q. Chang, Q. Chang, Q. Chang, R. Garrod, R. Launhardt, R. T. Garrod, R.E. Weston, R.J. Gould, R.J.A. Grim, R.M. Logan, R.P. Bell, R.T. Garrod, R.T. Garrod, R.T. Garrod, R.T. Garrod, R.T. Garrod, R.T. Garrod, R.T. Garrod, S. Andersson, S. Andersson, S. Andersson, S. Andersson, S. Cazaux, S. Ioppolo, S. Ioppolo, S. Viti, S.A. Sandford, S.A. Sandford, S.A. Sandford, S.A. Sandford, S.B. Charnley, S.B. Charnley, S.D. Green, S.E. Bisschop, S.E. Bisschop, S.S. Prasad, T. Albertsson, T. Butscher, T. Grassi, T. Hama, T. Hama, T. Hama, T. Henning, T. Lamberts, T. Lamberts, T. Lamberts, T. Lamberts, T. Lamberts, T. Lamberts, T. Lauck, T. Stantcheva, T. Stantcheva, T.I. Hasegawa, T.I. Hasegawa, T.I. Hasegawa, T.J. Millar, T.J.H. Hele, T.L. Nguyen, T.L. Nguyen, T.L. Nguyen, T.L. Nguyen, T.P.M. Goumans, T.P.M. Goumans, T.P.M. Goumans, T.P.M. Goumans, T.W. Hartquist, V. Barone, V. Buch, V. Pirronello, V. Pirronello, V. Pirronello, V. Taquet, V. Taquet, V. Wakelam, V. Wakelam, V.K. Veeraghattam, W. Hagen, W.A. Brown, W.D. Geppert, W.D. Watson, W.D. Watson, W.D. Watson, Y. Aikawa, Y. Chen, Y. Li, Y. Oba, Y. Oba, Y. Oba, Y. Oba, Y. Oba, Y. Zhang, Y.V. Suleimanov, Z. Awad   +284 more
core   +6 more sources

The Influence of Galactic Cosmic Rays on Ion-Neutral Hydrocarbon Chemistry in the Upper Atmospheres of Free-Floating Exoplanets [PDF]

, 1989
Cosmic rays may be linked to the formation of volatiles necessary for prebiotic chemistry. We explore the effect of cosmic rays in a hydrogen-dominated atmosphere, as a proof-of-concept that ion-neutral chemistry may be important for modelling hydrogen ...
C. Bilger, Ch. Helling, Miller, P. B. Rimmer, Rimmer, Skilling   +5 more
core   +3 more sources

On the Energetics of the HCO$^+$ + C $\to$ CH$^+$ + CO Reaction and Some Astrochemical Implications [PDF]

, 2017
We explore the energetics of the titular reaction, which current astrochemical databases consider open at typical dense molecular (i.e., dark) cloud conditions.
Bhaskar, Roshan G., Savin, Daniel W., Urbain, Xavier, Vissapragada, Shreyas   +3 more
core   +3 more sources