Results 31 to 40 of about 35,391 (195)

The composition of the protosolar disk and the formation conditions for comets [PDF]

, 2015
Conditions in the protosolar nebula have left their mark in the composition of cometary volatiles, thought to be some of the most pristine material in the solar system.
A. Dutrey, A. Kouchi, A.E. Glassgold, A.G.G.M. Tielens, A.I. Vasyunin, A.L. Cochran, A.N. Heays, A.Z. Dolginov, B. Silvi, B.P. Bonev, B.P. Bonev, B.P. Bonev, C. Alexander, C. Ceccarelli, C. Ceccarelli, C. Ceccarelli, C. Dominik, C. Qi, C. Qi, C. Qi, C. Qi, C. Salyk, C. Tornow, C. Tornow, C. Tornow, C. Walsh, C. Walsh, C.E. Woodward, C.P. Dullemond, D. Bockelée-Morvan, D. Bockelée-Morvan, D. Bockelée-Morvan, D. Bockelée-Morvan, D. Bockelée-Morvan, D. Gautier, D. Harsono, D. Heinzeller, D. Hutsemékers, D. Kozlowski, D. Semenov, D. Semenov, D.C. Lis, E. Gibb, E. Herbst, E. Jehin, E. Lellouch, E. Roueff, E. S. Wirström, E. Zicler, E.D. Young, E.K. Jessberger, E.L. Gibb, E.S. Wirström, E.S. Wirström, F. Hersant, F. Pauzat, F.C. Adams, F.J. Ciesla, F.J. Ciesla, G. Buntkowsky, G. Bussolin, G. Cremonese, G. Kresse, G. Kresse, G. Notesco, G.J. Flynn, G.J. Villanueva, G.L. Villanueva, G.S. Mathews, H. Kawakita, H. Kawakita, H. Kawakita, H. Kawakita, H. Yurimoto, H. Yurimoto, I. Gregorio-Monsalvo de, I. Pater de, I. Pater de, J. Crovisier, J. Crovisier, J. Crovisier, J. Crovisier, J. Crovisier, J. Schönke, J.-E. Lee, J.C. Mottram, J.E. Heidenreich III, J.F. Hawley, J.F. Hawley, J.I. Lunine, J.J. Kavelaars, J.K.J. Fogel, J.P. Perdew, J.R. Lyons, J.R. Najita, J.S. Carr, J.S. Lewis, J.S. Mathis, K. Altwegg, K. France, K. Hashimoto, K. Nagashima, K. Saigo, K. Willacy, K. Willacy, K. Willacy, K. Willacy, K. Willacy, K. Willacy, K.D. McKeegan, K.I. Öberg, K.M. Chick, K.M. Pontoppidan, K.M. Pontoppidan, K.M. Pontoppidan, K.M. Pontoppidan, K.Y. Furuya, L. Pagani, L. Paganini, L. Podio, L.I. Cleeves, L.I. Cleeves, L.I. Cleeves, L.R. Nittler, M. Ali-Dib, M. Ali-Dib, M. Asplund, M. Calatayud, M. Doronin, M. Hassig, M. Ilgner, M. Ilgner, M. Ilgner, M. Pettini, M.A. DiSanti, M.F. A’Hearn, M.J. Mumma, M.J. Mumma, M.J. Mumma, M.R. Hogerheijde, M.V. Persson, N. Biver, N. Dello Russo, N. Dello Russo, N. Dello Russo, N. Fray, N. Iro, N. Watanabe, N.J. Turner, N.J. Turner, N.J. Turner, O. Mousis, O. Mousis, O. Mousis, O. Mousis, O. Mousis, O. Mousis, O. Mousis, O. Mousis, O. Mousis, O. Mousis, O. Mousis, P. Caselli, P. D’Alessio, P. Eberhardt, P. Eberhardt, P. Gast, P. Hartogh, P. Theulé, P.M. Woods, P.M. Woods, R. Hueso, R. Llusar, R. Meier, R. Meier, R. Visser, R. Visser, R. Visser, R.N. Clayton, R.N. Clayton, S. B. Charnley, S. Casassa, S. Casassa, S. Grimme, S. Gulkis, S. Inutsuka, S. N. Milam, S. Wyckoff, S.A. Balbus, S.B. Charnley, S.B. Charnley, S.B. Charnley, S.B. Charnley, S.B. Charnley, S.D. Rodgers, S.E. Dodson-Robinson, T. Albertsson, T. Albertsson, T. Albertsson, T. Bredichin, T. Hama, T. Lee, T. Owen, T.J. Millar, Th. Henning, U. Marboeuf, U. Marboeuf, U. Marboeuf, V. Akimkin, V. Taquet, V. Taquet, V. Wakelam, V. Zubko, W.-H. Ip, W.D. Langer, W.M. Irvine, Y. Aikawa, Y. Aikawa, Y. Aikawa, Y. Aikawa, Y. Aikawa, Y. Aikawa, Y. Alibert, Y. Alibert, Y. Ellinger, Y. Ellinger, Y. Shinnaka, Y.L. Radeva   +227 more
core   +3 more sources

Nanodust in the Interstellar Medium in Comparison to the Solar System

, 2012
Nanodust, which undergoes stochastic heating by single starlight photons in the interstellar medium, ranges from angstrom-sized large molecules containing tens to thousands of atoms (e.g.
Li, Aigen, Mann, Ingrid
core   +1 more source

Deep Search for Phosphine in a Prestellar Core

The Astrophysical Journal Letters
Understanding in which chemical forms phosphorus exists in star- and planet-forming regions and how phosphorus is delivered to planets are of great interest from the viewpoint of the origin of life on Earth.
Kenji Furuya, Takashi Shimonishi
doaj   +1 more source

Radiolysis of ammonia-containing ices by energetic, heavy and highly charged ions inside dense astrophysical environments [PDF]

, 2009
Deeply inside dense molecular clouds and protostellar disks, the interstellar ices are protected from stellar energetic UV photons. However, X-rays and energetic cosmic rays can penetrate inside these regions triggering chemical reactions, molecular ...
Balanzat, E., Boduch, P., da Silveira, E. F., Domaracka, A., Duarte, E. Seperuelo, Pilling, S., Rothard, H.   +6 more
core   +3 more sources

A Framework for Incorporating Binding Energy Distribution in Gas-ice Astrochemical Models

The Astrophysical Journal
One of the most serious limitations of current astrochemical models with the rate equation (RE) approach is that only a single type of binding site is considered in grain surface chemistry, although laboratory and quantum chemical studies have found that
Kenji Furuya
doaj   +1 more source

A Possible Chemical Clock in High-mass Star-forming Regions: N(HC3N)/N(N2H+)?

The Astrophysical Journal Supplement Series, 2023
We conducted observations of multiple HC _3 N ( J = 10−9, 12−11, and 16−15) lines and the N _2 H ^+ ( J = 1−0) line toward a large sample of 61 ultracompact (UC) H ii regions, through the Institut de Radioastronomie Millmétrique 30 m and the Arizona ...
Y. X. Wang, J. S. Zhang, H. Z. Yu, Y. Wang, Y. T. Yan, J. L. Chen, J. Y. Zhao, Y. P. Zou   +7 more
doaj   +1 more source

Organic Chemistry in the H2-bearing, CO-rich Interstellar Ice Layer at Temperatures Relevant to Dense Cloud Interiors

The Astrophysical Journal
Ice chemistry in the dense, cold interstellar medium (ISM) is probably responsible for the formation of interstellar complex organic molecules (COMs). Recent laboratory experiments performed at T ∼ 4 K have shown that irradiation of CO:N _2 ice samples ...
Rafael Martín-Doménech, Alexander DelFranco, Karin I. Öberg, Mahesh Rajappan   +3 more
doaj   +1 more source

The SPHEREx Target List of Ice Sources (SPLICES)

The Astrophysical Journal, 2023
One of the primary objectives of the SPHEREx mission is to understand the origin of molecules such as H _2 O, CO _2 , and other volatile compounds at the early stages of planetary system formation.
Matthew L. N. Ashby, Joseph L. Hora, Kiran Lakshmipathaiah, Sarita Vig, Rama Krishna Sai Subrahmanyam Gorthi, Miju Kang, Volker Tolls, Gary J. Melnick, Michael W. Werner, Brendan P. Crill, Daniel C. Masters, Carlos Contreras Peña, Jeong-Eun Lee, Jaeyeong Kim, Ho-Gyu Lee, Sung-Yong Yoon, Soung-Chul Yang, Nicholas Flagey, Bertrand Mennesson   +18 more
doaj   +1 more source

Synthetic Approaches to Complex Organic Molecules in the Cold Interstellar Medium

Frontiers in Astronomy and Space Sciences, 2022
The observation and synthesis of organic molecules in interstellar space is one of the most exciting and rapidly growing topics in astrochemistry.
Eric Herbst, Eric Herbst, Robin T. Garrod, Robin T. Garrod   +3 more
doaj   +1 more source

Centrosymmetric molecules as possible carriers of diffuse interstellar bands

, 2010
In this paper, we present new data with interstellar C2 (Phillips bands A-X), from observations made with the Ultraviolet-Visual Echelle Spectrograph of the European Southern Observatory.
Bakker, Bakker, Ballik, Ballik, Chauville, Crawford, Douay, Douglas, F. A. Musaev, Frisch, G. A. Galazutdinov, Galazutdinov, Galazutdinov, Gredel, Heger, Herbig, Herbig, Hobbs, J. Krełowski, Kaźmierczak, Kaźmierczak, Langhoff, M. Kaźmierczak, M. R. Schmidt, Maier, Marenin, Morton, Sarre, Sonnentrucker, Thorburn, Van Dishoeck, Van Dishoeck, Westerlund, Y. Betelesky, Ádámkovics   +34 more
core   +1 more source