Academic literature on the topic 'Interstellar molecules'

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Journal articles on the topic "Interstellar molecules"

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Oladimeji, Enock Oluwole, Emmanuel E. Etim, Emmanuel Chukwuebuka Umeh, et al. "Exploring the Thermodynamic Characteristics of Isoelectronic Diatomic Interstellar Molecular Species: Oxygen and Sulfur Containing Specie." UMYU Scientifica 3, no. 2 (2024): 146–58. http://dx.doi.org/10.56919/usci.2432.016.

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Study’s Excerpt/Novelty This study provides a comprehensive computational analysis of the thermodynamic properties of isoelectronic diatomic interstellar molecular species containing oxygen and sulfur atoms, spanning a wide range of interstellar temperatures. By investigating entropy, free energy, heat capacity, and internal energy, the research reveals unique trends, such as the earlier responsiveness of sulfur-containing molecules to temperature changes and the significant impact of molecular size on thermodynamic properties. These insights into the isoelectronic effects and thermodynamic be
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Winnewisser, G., and E. Herbst. "Interstellar molecules." Reports on Progress in Physics 56, no. 10 (1993): 1209–73. http://dx.doi.org/10.1088/0034-4885/56/10/001.

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Lequeux, J., and E. Roueff. "Interstellar molecules." Physics Reports 200, no. 5 (1991): 241–99. http://dx.doi.org/10.1016/0370-1573(91)90010-j.

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Kerridge, J. F. "Interstellar Molecules in Meteorites." Symposium - International Astronomical Union 135 (1989): 383–88. http://dx.doi.org/10.1017/s0074180900125392.

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Substantial enrichment of deuterium, D, in certain components of chondritic meteorites is interpreted as a record of isotopic fractionation during ion-molecule reactions at the very low temperatures characteristic of dense interstellar clouds. Whether those meteorites still contain the actual molecules that were synthesised in the presolar interstellar medium, or whether the interstellar material was recycled into a later generation of molecules within the early solar system is not known.
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Kuan, Y. J., H. C. Huang, S. B. Charnley, et al. "Prebiologically Important Interstellar Molecules." Symposium - International Astronomical Union 213 (2004): 185–88. http://dx.doi.org/10.1017/s0074180900193246.

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Understanding the organic chemistry of molecular clouds, particularly the formation of biologically important molecules, is fundamental to the study of the processes which lead to the origin, evolution and distribution of life in the Galaxy. Determining the level of molecular complexity attainable in the clouds, and the nature of the complex organic material available to protostellar disks and the planetary systems that form from them, requires an understanding of the possible chemical pathways and is therefore a central question in astrochemistry. We have thus searched for prebiologically imp
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Kaźmierczak, Maja, Mirosław Schmidt, and Jacek Krełowski. "Dicarbon molecule in the interstellar clouds." Proceedings of the International Astronomical Union 4, S251 (2008): 45–46. http://dx.doi.org/10.1017/s1743921308021145.

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AbstractWe present high-resolution and high signal-to-noise spectroscopic observations of interstellar molecular lines of C2 towards early-type stars. C2 is particularly interesting because it is the simplest multicarbon molecule and its abundances give information on the chemistry of interstellar clouds, especially on the pathway of formation of (hydro)carbon chains and PAHs which may be considered as possible carriers of diffuse interstellar bands (DIBs). Homonuclear diatomic molecules have negligible dipol moments and hence radiative cooling of excited rotational levels may go only trough t
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Ziurys, L. M., and B. E. Turner. "New Interstellar Molecular Detections: Implications for “Shock Chemistry”." Symposium - International Astronomical Union 120 (1987): 289–92. http://dx.doi.org/10.1017/s0074180900154166.

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Several new interstellar species have recently been detected in the molecular gas, including rotationally-excited CH, vibrationally-excited HCN, and a new molecular ion, HCNH+. These detections have raised some interesting questions concerning the relative importance of “shock” or “high temperature” chemistry vs. ion-molecule reactions in the synthesis of interstellar molecules in dense clouds.
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Menten, Karl M. "Interstellar methanol masers." Symposium - International Astronomical Union 206 (2002): 125–26. http://dx.doi.org/10.1017/s0074180900222213.

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The asymmetric rotor molecule methanol (CH3OH) has hundreds of transitions at centimeter-, millimeter-, and submillimeter wavelengths. Many of these are excited in the hot (T ≳ 150 K), dense (n ≳ 106 cm−3) molecular cloud cores surrounding newly formed massive stars or protostars. The high temperatures in these cores cause evaporation of icy grain mantles, releasing copious amounts of complex molecules, such as methanol, in the gas phase, which in hot cores has abundances (up to 10−6 relative to H2) that are two or more orders of magnitude higher than in cold dark clouds.
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Aiello, S., B. Barsella, C. Cecchi-Pestellini, F. Mencaraglia, and A. Rosolia. "Molecular Life-Time against Photodissociation in Dark Interstellar Clouds." Symposium - International Astronomical Union 120 (1987): 75–76. http://dx.doi.org/10.1017/s0074180900153811.

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Molecules in the interstellar space are exposed to interstellar radiation, so that they are destroyed by photodissociation processes, leading to the production of smaller molecules and ions, which in turn can react with other molecular species. Therefore, dissociation rates and dissociation products are important for the chemistry of interstellar molecules. This holds true also for relatively opaque and dense clouds (τ ≲ 10 in the visual), due to the multiple scattering of UV radiation by dust.
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Thaddeus, P. "The prebiotic molecules observed in the interstellar gas." Philosophical Transactions of the Royal Society B: Biological Sciences 361, no. 1474 (2006): 1681–87. http://dx.doi.org/10.1098/rstb.2006.1897.

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Over 130 molecules have been identified in the interstellar gas and circumstellar shells, the largest among them is a carbon chain with 13 atoms and molecular weight of 147 (twice that of the simplest amino acid glycine). The high reliability of astronomical identifications, as well as the fairly accurate quantitative analysis which can often be achieved, is emphasized. Glycine itself has been claimed, but a recent analysis indicates that few, if any, of the astronomical radio lines attributed to glycine are actually from that molecule. Polycyclic aromatic hydrocarbons (PAHs) have long been pr
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Dissertations / Theses on the topic "Interstellar molecules"

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Whelan, Mark Clifford. "Spectroscopic studies of interstellar molecules." Thesis, University of Sussex, 2017. http://sro.sussex.ac.uk/id/eprint/68548/.

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Couch, Philip Anthony. "Molecules in circumstellar and interstellar environments : TiO." Thesis, University of Nottingham, 2002. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.247564.

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Holland, Simon Michael. "Highly excited molecules and the interstellar maser." Thesis, University of Bristol, 1999. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.265469.

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Harada, Nanase. "Interstellar Molecules in Galactic and Extragalactic Sources." The Ohio State University, 2011. http://rave.ohiolink.edu/etdc/view?acc_num=osu1312559226.

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Cernicharo, José. "Matiere diffuse et molecules interstellaires." Paris 7, 1988. http://www.theses.fr/1988PA077028.

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La structure des nuages sombres de la region taurus-auriga-perseus et les causes des differences chimiques observees sont etudiees a l'aide de donnees radio, ir et optique. Des observations millimetriques ont permis de realiser des cartes detaillees en co de ce complexe moleculaire interstellaire. De nouvelles molecules metalliques ont ete detectees (clna, clk, clal et fal) ainsi que des isotopes de sicc et hccch. Des travaux instrumentaux pour differents radiotelescopes sont aussi decrits
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Quan, Donghui. "Chemical Modeling of Interstellar Molecules in Dense Cores." The Ohio State University, 2009. http://rave.ohiolink.edu/etdc/view?acc_num=osu1259614944.

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Vichetti, Rafael Mário [UNESP]. "Síntese dos isótopos do monóxido de carbono no meio interestelar." Universidade Estadual Paulista (UNESP), 2009. http://hdl.handle.net/11449/91889.

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Made available in DSpace on 2014-06-11T19:25:31Z (GMT). No. of bitstreams: 0 Previous issue date: 2009-12-21Bitstream added on 2014-06-13T19:53:20Z : No. of bitstreams: 1 vichietti_rm_me_rcla.pdf: 842604 bytes, checksum: 731ca276a75c1b92840e57bd7497b5e1 (MD5)<br>Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)<br>De acordo com os resultados observacionais de condensações de nuvens moleculares escuras, grandes variações na razão 13CO/C18O são observadas quando se comparam os resultados obtidos nas condensações situadas dentro da mesma nuvem, bem como de nuvem para nuvem. O
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Smith, Arfon. "Dust and molecules in interstellar, circumstellar and extragalactic environments." Thesis, University of Nottingham, 2006. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.438422.

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Doronin, Mikhail. "Adsorption on interstellar analog surfaces : from atoms to organic molecules." Thesis, Paris 6, 2015. http://www.theses.fr/2015PA066254/document.

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Les interactions gaz-grains jouent un rôle important dans la chimie des milieux interstellaires et protoplanétaires. Le paramètre-clé qui gouverne les échanges entre la surface des grains et la phase gazeuse est l’énergie d’adsorption Ea. Ce travail a pour but de développer une approche jointe expérimentale et théorique afin de déterminer les énergies d’adsorption pour des atomes et molécules d’intérêt astrophysique sur des substrats-modèles des surfaces des grains de poussière interstellaires. Expérimentalement, la méthode employée est la désorption programmée en température (TPD). Le travail
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Hunt, Maria, University of Western Sydney, of Science Technology and Environment College, and School of Engineering and Industrial Design. "Molecules in southern molecular clouds: a millimetre-wave study of dense cores." THESIS_CSTE_EID_Hunt_M.xml, 2001. http://handle.uws.edu.au:8081/1959.7/116.

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This thesis presents an observational study of molecular abundances in the dense cores of 27 prominent molecular clouds in the southern galactic plane.The molecular abundances and physical conditions in dense condensations have been derived from millimetre-wavelength observations of molecular rotational transitions.The study has produced a comprehensive data set of transition intensities and abundances for 10 different molecules in bright southern molecular clouds, and the general characteristics of emissions from these molecules such as optical depth, excitation and relative abundances are di
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Books on the topic "Interstellar molecules"

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Yamada, Koichi M. T., and Gisbert Winnewisser, eds. Interstellar Molecules. Springer Berlin Heidelberg, 2011. http://dx.doi.org/10.1007/978-3-642-16268-8.

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1936-, Winnewisser G. (Gisbert), and SpringerLink (Online service), eds. Interstellar Molecules: Their Laboratory and Interstellar Habitat. Springer-Verlag Berlin Heidelberg, 2011.

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K, Bohme Diethard, ed. Chemistry and spectroscopy of interstellar molecules. University of Tokyo Press, 1992.

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Suzuki, Hiroko. Toward interstellar chemistry: Works. National Astoronomy Observatory, 1989.

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Flower, D. R. Molecular collisions in the interstellar medium. Cambridge University Press, 1990.

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M, Smith Ian W., ed. Low temperatures and cold molecules. Imperial College Press, 2008.

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1974-, Haverkorn M., and Goss W. M, eds. SINS--small ionized and neutral structures in the diffuse interstellar medium: Proceedings of a workshop held at the National Radio Astronomy Observatory, Socorro, New Mexico, USA, 21-24 May 2006. Astronomical Society of the Pacific, 2007.

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Flynn, George. Theoretical molecular studies of astrophysical interest: 1 December 1974 - 30 September 1991 : final technical report. National Aeronautics and Space Administration, 1991.

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G, Elmegreen Bruce, and Palouš J, eds. Triggered star formation in a turbulent interstellar medium: Proceedings of the 237th symposium of the International Astronomical Union held in Prague, Czech Republic August 14-18, 2006. Cambridge University Press, 2007.

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Masako, Suto, and United States. National Aeronautics and Space Administration., eds. Photoabsorption and photodissociation of molecules important in the interstellar medium. National Aeronautics and Space Administration, 1991.

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Book chapters on the topic "Interstellar molecules"

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Verschuur, Gerrit. "Interstellar Molecules." In Astronomers' Universe. Springer International Publishing, 2015. http://dx.doi.org/10.1007/978-3-319-13422-2_7.

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Kaifu, Norio. "Interstellar Molecules." In Molecular Processes in Space. Springer US, 1990. http://dx.doi.org/10.1007/978-1-4613-0591-0_9.

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Maciel, Walter J. "Interstellar Molecules." In Astrophysics of the Interstellar Medium. Springer New York, 2012. http://dx.doi.org/10.1007/978-1-4614-3767-3_10.

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Verschuur, Gerrit L. "Formation of Molecules." In Interstellar Matters. Springer New York, 1989. http://dx.doi.org/10.1007/978-1-4612-4522-3_21.

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Wilson, Stephen. "Interstellar Molecules and Interstellar Chemistry." In Chemistry by Computer. Springer US, 1986. http://dx.doi.org/10.1007/978-1-4613-2137-8_8.

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Kerridge, J. F. "Interstellar Molecules in Meteorites." In Interstellar Dust. Springer Netherlands, 1989. http://dx.doi.org/10.1007/978-94-009-2462-8_34.

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Verschuur, Gerrit L. "Molecules and Interstellar Matter." In Interstellar Matters. Springer New York, 1989. http://dx.doi.org/10.1007/978-1-4612-4522-3_20.

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Barker, John R., and Isabelle Cherchneff. "Grains, or Molecules? Thermal, or Non-Thermal?" In Interstellar Dust. Springer Netherlands, 1989. http://dx.doi.org/10.1007/978-94-009-2462-8_18.

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D’Hendecourt, L. B., A. Léger, P. Boissel, and F. X. Désert. "Infrared Emission Mechanism in Large Isolated Molecules." In Interstellar Dust. Springer Netherlands, 1989. http://dx.doi.org/10.1007/978-94-009-2462-8_19.

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Rohlfs, K., and T. L. Wilson. "Molecules in Interstellar Space." In Astronomy and Astrophysics Library. Springer Berlin Heidelberg, 2004. http://dx.doi.org/10.1007/978-3-662-05394-2_14.

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Conference papers on the topic "Interstellar molecules"

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Ziurys, Lucy M. "Interstellar Molecules: The New Frontiers for Molecular Data." In ATOMIC AND MOLECULAR DATA AND THEIR APPLICATIONS: 3rd International Conference on Atomic and Molecular Data and Their Applications ICAMDATA. AIP, 2002. http://dx.doi.org/10.1063/1.1516332.

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Gençağa, Deniz, Duane F. Carbon, Kevin H. Knuth, Marcelo de Souza Lauretto, Carlos Alberto de Bragança Pereira, and Julio Michael Stern. "Characterization of Interstellar Organic Molecules." In BAYESIAN INFERENCE AND MAXIMUM ENTROPY METHODS IN SCIENCE AND ENGINEERING: Proceedings of the 28th International Workshop on Bayesian Inference and Maximum Entropy Methods in Science and Engineering. AIP, 2008. http://dx.doi.org/10.1063/1.3039011.

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Thaddeus, Patrick. "Carbenes in the Interstellar Gas." In High Resolution Spectroscopy. Optica Publishing Group, 1993. http://dx.doi.org/10.1364/hrs.1993.tha1.

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Carbenes are a significant trace constituent of the gas in the interstellar medium (and in the expanding shell around at least one star), representing about one-sixth of the molecular species that have been identified in space. The identification of one of the most abundant and widespread interstellar carbenes, the cyclopropenylidene ring, C3H2, is described, together with recent laboratory work on the excited vibrational states of this molecule and on the geometrical structure of one of its isomers, the carbon chain carbene H2C3. A number of additional free carbines which might be detected in
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A. Srećković, Vladimir, Nicolina Pop, Veljko Vujčić, et al. "Confined molecular systems and astrochemical modelling." In Building bridges between climate science and society through a transdisciplinary network. Scientific Society Isaac Newton, 2024. http://dx.doi.org/10.69646/bbbs2415.

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In the past few decades, computational chemistry methods have grown in significance for studying the dynamics and interactions of small molecules encased in bigger structures (see Albert et al. 2020 and references therein). In constrained systems, molecular clouds play a crucial but little understood role despite their enormous size (Reis et al. 2022). Few hundred molecular species, including diatomic to massive anions, cations, and neutrals, are currently known to exist in interstellar space (see e.g. Roesky &amp; Mandel 2010). Deep within molecular clouds, molecules can resist photodissociat
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A. Srećković, Vladimir, Veljko Vujčić, Milan S. Dimitrijević, et al. "The confined molecular systems and astrophysical models." In International scientific conference: Meeting on new trends in Astronomy & Earth Observation. Scientific Society Isaac Newton Belgrade, 2024. https://doi.org/10.69646/aob241220.

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Abstract: The importance of computational chemistry techniques for examining the dynamics and interactions of molecules enclosed in larger structures has increased over the last few decades (Srećković et al. 2020, Albert et al. 2020). Despite their vast scale, molecular clouds play an important but little understood role in confined systems (Reis et al. 2022). There are currently a few hundred molecular species known to exist in interstellar space, ranging from diatomic to massive anions, cations, and neutrals (see, e.g. de Lara-Castells and Hauser 2020, Roesky &amp; Mandel 2010). Interstellar
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Thimmakondu, Venkatesan. "MOLECULES IN LABORATORY AND IN INTERSTELLAR SPACE?" In 71st International Symposium on Molecular Spectroscopy. University of Illinois at Urbana-Champaign, 2016. http://dx.doi.org/10.15278/isms.2016.rh05.

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Iacob, Felix. "Molecular Electron Collisions in Exoplanet Atmospheres and the Interstellar Medium." In International scientific conference: Meeting on new trends in Astronomy & Earth Observation. Scientific Society Isaac Newton Belgrade, 2024. https://doi.org/10.69646/aob241208.

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Abstract: Recent changes in the climate have sparked interest in studying molecular-electron collisions in exoplanet atmospheres and, to a greater extent, in the interstellar medium. The competitive model of quantum mechanics can be used to describe Feshbach resonances, which are extremely excited bound states superposed with the continuum. Because they generate dissociation at low energy, these bound states are essential for explaining the dissociative recombination of the molecule that often occurs in this plasma environment. One effective theory that yields quantitative findings for identif
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Iacob, F. "ELECTRON-MOLECULAR CATION COLLISIONS IN INTERSTELLAR SPACE." In VI Conference on Active Galactic Nuclei and ravitational Lensing. Astronomical Observatory Belgrade, Volgina 7, 11060 Belgrade 38, Serbia, 2024. http://dx.doi.org/10.69646/aob24007.

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In the interstellar medium, highly excited states of molecules can form a state of matter called Rydberg Matter. Mainly, they are formed by the promotion of an electron from the lower layers of the molecule to the highly excited ones. However, these can also be formed by temporarily capturing an electron in high energy orbitals following its collisions with cations. This paper focuses on the latter, the collisional approach, which is more suitable for explaining these highly excited states that can be found in this environment. It should be mentioned that in this environment cations are abunda
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Snyder, Lewis E. "Detection of large interstellar molecules with radio interferometers." In Optical Science, Engineering and Instrumentation '97, edited by Richard B. Hoover. SPIE, 1997. http://dx.doi.org/10.1117/12.278783.

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Walmsley, C. M. "Ammonia in the interstellar medium." In The 50th international meeting of physical chemistry: Molecules and grains in space. AIP, 1994. http://dx.doi.org/10.1063/1.46570.

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Reports on the topic "Interstellar molecules"

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King, P. K. Gas Dynamics Near and Far: Observational Magnetohydrodynamics of Interstellar Molecular Clouds and X-Ray Ablation of Asteroids for the Earth's Defense. Office of Scientific and Technical Information (OSTI), 2019. http://dx.doi.org/10.2172/1544929.

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