GENERAL SPECTROSCOPY AND CHEMICAL PHYSICS

L.J. Allamandola, H.M. Rojhantalab, J.W. Nibler, and T. Chappell, "Vibrational Relaxation Studies of Matrix Isolated C₂-" J. Chem. Phys. 67, 99 (1977).

L.J. Allamandola, D. Lucas, and G.C. Pimentel, "Synchronized Flash Photolysis and Pulse Deposition in Matrix Isolation Experiments", Rev. Sci. Inst. 49, 913 (1978).

C.E.P.M. van de Bult, L.J. Allamandola, F. Baas, L.J. van IJzendoorn, and J.M. Greenberg, "Chemiluminescence of N₂, NH and O₂ in Argon Matrices", J. Mol. Struct. 6l, 235 (1980).

L.J. van IJzendoorn, L.J. Allamandola, F. Baas, and J.M. Greenberg, "Visible Absorption Spectroscopy of Matrix Isolated HCO: the 2A"(p), X²A' Transition", J. Chem. Phys. 78, 7017 (1983).

L.J. van IJzendoorn, L.J. Allamandola, F. Baas, S. Kornig, and J.M. Greenberg, "Laser Induced Fluorescence and Phosphorescence of Matrix Isolated Glyoxal: Evidence for Exciplex Formation in the A¹A_u and a³A_u States", J. Chem. Phys. 85, 1812 (1986).

See also next section for general spectroscopy and chemical physics on PAHs

INFRARED EMMISION AND POLYCYCLIC AROMATIC HYDROCARBONS (PAHS)

L.J. Allamandola, J.M. Greenberg, and C.A. Norman, "On the Middle Infra- red Fluorescence and Absorption of Molecules in Grain Mantles", Astron. and Astrophys. 77, 66 (1979).

L.J. Allamandola, A.G.G.M. Tielens, and J.R. Barker,"Polycyclic Aromatic Hydrocarbons and the Unidentified Infrared Emission Bands: Auto Exhaust Along the Milky Way!," Astrophys. J. Letters 290, L25 (1985).

G.P. van der Zwet, and L.J. Allamandola, "Polycyclic Aromatic Hydrocarbons and the Diffuse Interstellar Bands", Astron. Astrophys. 146, 76 (1985).

M.K. Crawford, A.G.G.M. Tielens, and L.J. Allamandola, "Polycyclic Aromatic Hydrocarbon Cations and the Diffuse Interstellar Bands", Astrophys. J. Letters 293, L45 (1985).

M. Cohen, A.G.G.M. Tielens, and L.J. Allamandola, "A New Emission Feature in IRAS Spectra and the Polycyclic Aromatic Hydrocarbon Spectrum" Astrophys. J. Letters 299, L93 (1985).

L.J. Allamandola, A.G.G.M. Tielens, and J.R. Barker, Infrared Absorption and Emission Characteristics of Interstellar PAHs, in "Interstellar Processes", eds. D. Hollenbach and H. Thronson, (D. Reidel, Dordrecht, Netherlands) 1987, 471.

Allamandola, L.J., Sandford, S.A., and Wopenka, B., "Interstellar Polycyclic Aromatic Hydrocarbons and Carbon in Interplanetary Dust Particles and Meteorites", Science 237, 56 (1987).

Allamandola, L.J., Tielens, A.G.G.M., and Barker, J.R., "Interstellar Polycyclic Aromatic Hydrocarbons: the Infrared Emission Bands, the Excitation-Emission Mechanism and the Astrophysical Implications", Ap.J. Suppl. 71, 733-775, 1989.

Salama, F., and Allamandola, L.J., Electronic Absorption Spectroscopy of Matrix-Isolated Polycyclic Aromatic Hydrocarbon Cations. I. The Naphthalene Cation (C₁₀H₈+). J. Chem. Phys. 94, 6964-6977, 1991.

Salama, F. and Allamandola, L.J., The Ultraviolet and Visible Spectrum of the PAH C₁₀H₈+: Possible Contributions to the Diffuse Interstellar Bands and to the UV-Visible Extinction. Astrophys. J. 395, 301-306, 1992.

Salama, F. and Allamandola, L.J., Is a Pyrene-Like Molecular Ion Responsible for the 4430 Å Diffuse Interstellar Band? Nature 358,42-43, 1992.

Salama, F. and Allamandola, L.J., Neutral and Ionized PAHs, The Diffuse Interstellar Bands, and the Ultraviolet Extinction Curve, J. Chem. Soc.Faraday Trans. 89, 2277-2284, 1993.

Hudgins, D.M., Sandford, S.A., and Allamandola, L.J., Infrared Spectoscopy of Polycyclic Aromatic Hydrocarbon Cations I: Matrix-Isolated Naphthalene and Perdeuterated Naphthalene, J. Phys. Chem. 98, 4243-4253, 1994.

Salama, F. Joblin, C., and Allamandola, L.J., Electronic Absorption Spectroscopy of Matrix-Isolated Polycycic Aromatic Hydrocarbon Cations. II. The Phenanthrene Cation (C₁₄H₁₀+) and its 1-Methyl Derivative, J. Chem. Phys. 101, 10252-10262, 1994.

Hudgins, D.M. and Allamandola, L.J., Infrared Spectoscopy of Matrix- Isolated Polycyclic Aromatic Hydrocarbon Cations 2: The Members of the Thermodynamically Most Favorable Series through Coronene, J. Phys. Chem. 99, 3033-3046, 1995.

Hudgins, D.M. and Allamandola, L.J., Infrared Spectoscopy of Matrix- Isolated Polycyclic Aromatic Hydrocarbon Cations 3: The Polyacenes Anthracene, Tetracene, and Pentacene, J. Phys. Chem. 99, 8978-8986, 1995.

Allamandola, L.J., Sandford, S.A., Hudgins, D.M., and Witteborn, F.C., Airborne and Laboratory Studies of Interstellar PAHs in "Airborne AstronomySymposium on the Galactic Ecosystem: From Gas to Stars to Dust", ed. M. R. Haas, J.A. Davidson, and E.F. Erickson, Ast. Soc. Pac. Conf. Ser. 73, (Ast.Soc. Pac., San Francisco), 23-32, 1995.

Allamandola, L.J., Laboratory Studies of DIB Carriers in "Diffuse Interstellar Bands", ed. A.G.G.M. Tielens and T.Snow, (Kluwer, Dordrecht), 1995.

Joblin, C. , Salama, F., and Allamandola, L.J., Photoinduced Fluorescence from the Perylene Cation Isolated in Ne and Ar Matrices, letter to the Editor, J. Chem. Phys. 102, 9743-9745, 1995.

Salama, F. Joblin, C., and Allamandola, L.J., Neutral and Ionized PAHs: contribution to the interstellar extinction, Planet. Space Sci. 43, 1165-1173, 1995.

Joblin, C., Tielens, A.G.G.M., Allamandola, L.J., and Geballe, T.R., Spatial Variation of the 3.4 µm Emission Band within Reflection Nebulae and The Photochemical Evolution of Methylated PAHs, The Astrophys J. 458, 610-620, 1996.

Sellgren, K., Werner, M.W., and Allamandola, L.J., A Survey of Near Infrared Emission in Visual Reflection Nebulae, Astrophys J. Supp. Ser. 102, 369-382, 1996.

Salama, F., Bakes, E., Allamandola, L.J., and Tielens, A.G.G.M., Assessment of the Polycyclic Aromatic Hydrocarbon - Diffuse Interstellar Band Proposal, Astrophys J. 458, 621-636, 1996.

Allamandola, L.J., PAHS-They're Everywhere!, in "The Cosmic Dust Connection-3rd Course", ed J.M. Greenberg, (Kluwer, Dordrecht), 81-102, 1996.

Roelfsma, P.R. et al , SWS Observations of IR Emission Features in Compact HII Regions, Astron. and Astrophys. (Special ISO Edition) 315, L289-L292, 1996.

Bernstein, Max P., Sandford, Scott A., and Allamandola, Louis J., Hydrogenated Polycyclic Aromatic Hydrocarbons and the 2940 and 2850 Wavenumber ( 3.4 0 and 3.51 µm) Infrared Emission Features, Astrophys. J. 472, L127-L130, 1996.

Sloan, G.C., Bregman, J.D., Geballe, T.R., Allamandola, L.J., and Woodward, C.E., Variations in the 3 µm Spectrum Across the Orion Bar; PAHs and Related Molecules, Ap. J. 474, 735-740, 1997.

Hudgins, D.M. and Allamandola, L.J., Infrared Spectoscopy of Matrix-Isolated Polycyclic Aromatic Hydrocarbon Cations 4: The Tetracyclic PAH Isomers Chrysene and 1,2-Benzanthracene, J. Phys. Chem. 101, 3472-3477, 1997.

Hudgins, D.M., Allamandola, L.J., and Sandford, S.A., Complex Organic Molecules in Space: The Carriers of the Interstellar Infrared Emission Features, in "Complex Organics in Space", Advances in Space Research 19, 999-1008, 1997.

Langhoff, Stephan R., Bauschlicher Jr., Charles W., Hudgins, Douglas, M., Sandford, Scott A., and Allamandola, Louis, J., Infrared Spectra of Substituted Polycyclic Aromatic Hydrocarbons, J. Phys. Chem. 102, 1632-1646, 1998.

Allamandola, L.J., Hudgins, D.M., and Sandford, S.A. Modeling the Unidentified Infrared Emission with Combinations of Polycyclic Aromatic Hydrocarbons, Ap. J. (Letters) 511, L 115-L 119, 1999.

Hudgins, D.M. and Allamandola, L.J. The Spacing of the Interstellar 6.2 and 7.7 Micron Emission Features as an Indicator of Polycyclic Aromatic Hydrocarbon Size, Ap. J. (Letters) 513, L69-L73, 1999.

Hudgins, D.M. and Allamandola, L.J. Interstellar PAH Emission in the 11 - 14 Micron Region: New Insights from Laboratory Data and a Tracer of Ionized PAHs, Ap. J. (Letters) 516, L41-L44, 1999.

Sloan, G. C., Hayward, T. L., Allamandola, L. J., Bregman, J. D., DeVito, B., and Hudgins, D. M. Direct Spectroscopic Evidence for Ionized Polycyclic Aromatic Hydrocarbons in the Interstellar Medium, Ap. J. (Letters) 513, L65-L68, 1999.

Romanini, D., Biennier, L. Salama, F., Kachinov, A. Allamandola, L. J., and Stoeckel, F., Jet-Discharge Cavity Ring-down Spectroscopy of Ionized Polycyclic Aromatic Hydrocarbons: Progress in Testing the PAH Hypothesis for the Diffuse Interstellar Band Problem, Chem. Phys. Lett. 303, 165-170, 1999.

Joblin, C., Salama, F., and Allamandola, L. J. Absorption and Emission of Perylene (C₂₀H₁₂) isolated in Ne, Ar, and N₂ Matrices, J. Chem. Phys. 110, 7287-7297, 1999.

Chillier, X. D. F., Stone, B. M., Salama, F., and Allamandola, L. J. First Detection of an Ultraviolet Transition in an Ionized Polycyclic Aromatic Hydrocarbon, Letter to the Editor, J. Chem. Phys. 111, to appear in July 8 issue, 1999

Becker, L., Bunch, T. E., and Allamandola, L. J., C₆₀, C₇₀ and the Higher Fullerenes (C₁₀₀ to C₄₀₀) in the Allende Meteorite, Nature 1999, in press.

INTERSTELLAR ICES AND DUST

W.Hagen, L.J. Allamandola and J.M. Greenberg, "Interstellar Molecule Formation in Grain Mantles: The Laboratory Analog Experiments, Results and Implications," Astrophys. Sp. Sc. 65, 215, (1979).

W. Hagen, L.J. Allamandola and J.M. Greenberg, "Infra-red Absorption Lines by Molecules in Grain Mantles", Astron. Astrophys. 86, L3 (1980).

L.J. Allamandola, J.M. Greenberg, C.A. Norman and W. Hagen, "The Chemical Identification of Grain Mantles by Infrared Spectroscopy", IAU Symp. 87: Interstellar Molecules, ed. B.H. Andrew (D. Reidel, Dordrecht, Netherlands, 1980) p. 373.

L.B. d'Hendecourt, L.J. Allamandola, F. Baas and J.M. Greenberg, "Interstellar Grain Explosions: Molecule Cycling Between Gas and Dust," Astron. Astrophys. 109, L12 (1983).

J.H. Lacy, F. Baas, L.J. Allamandola, C.E.P.M. van de Bult,S.E. Persson, P.J. McGregor, C.J. Lonsdale and T.R. Geballe, "4.6 mm Absorption Features due to Solid Phase CO and Cyano Group Molecules toward Compact Infrared Sources", Astrophys. J. 276, 533 (1984).

L.J. Allamandola, "Absorption and Emission Characteristics of Interstellar Dust" in XVIth ESLAB Symposium on "Galactic and Extragalactic Infrared Spectroscopy", Eds. M. Kessler and P. Phillips (D. Reidel, Dordrecht, Netherlands, 1984), p.5.

A.G.G.M. Tielens, L.J. Allamandola, J.D. Bregman, J. Goebel, L.B. d'Hendecourt and F.C. Witteborn, "Absorption Features in the 5-8 Micron Spectra of Protostars" Astrophys. J. 287, 697 (1984).

L.B. d'Hendecourt, L.J. Allamandola and J.M. Greenberg, "Time Dependent Chemistry in Dense Molecular Clouds. I Grain Surface Reactions, Gas/Grain Interactions and Infrared Spectroscopy", Astron. Astrophys. 152, 130 (1985)

L.B. d'Hendecourt, L.J. Allamandola and R. Grim, "Time Dependent Chemistry in Dense Molecular Clouds. II Ultraviolet Photoprocessing and IR Spectroscopy of Grain Mantles", Astron. Astrophys. 158, 119 (1986).

L.B. d'Hendecourt and L.J. Allamandola, "Time Dependent Chemistry in Dense Molecular Clouds. III "Infrared Band Cross Sections of Molecules in the Solid State at 10K", Astron. Astrophys. Suppl. Ser. 64, 453 (1986).

A.G.G.M. Tielens and L.J. Allamandola, "Composition Structure and Chemistry of Interstellar Dust," in "Interstellar Processes", eds. D. Hollenbach and H. Thronson (D. Reidel, Dordrecht, The Netherlands) 1987, 397.

A.G.G.M. Tielens and L.J. Allamandola, "Evolution of Interstellar Dust", in Physical Processes in Interstellar Clouds, eds. G. Morfill and M. Scholer (D. Reidel, Dordrecht, the Netherlands), 1987, 333.

Sandford, S.A., Allamandola, L.J., Tielens, A.G.G.M., and Valero, G.J., "Laboratory Study of The Infrared Spectral Properties of CO in Astrophysical Ices," Astrophys. J. 329, 351 (1988).

Allamandola, L.J., Sandford, S.A., and Valero,G.J., "Photochemical and Thermal Evolution of Interstellar/Pre-Cometary Ice Analogs" Icarus 76, 225 (1988).

Allamandola, L.J., and Sandford, S.A., "Laboratory Simulation of Dust Spectra", in Dust in the Universe, eds. Bailey, M.E. and Williams, D.A. (Cambridge University Press, England), 1988, 229.

Allamandola, L.J. and Tielens, A.G.G.M., editors: "Interstellar Dust, Proceedings of IAU Symposium 135" (Kluwer, Dordrecht) 1989.

Tielens, A.G.G.M. and Allamandola, L.J., editors: "Interstellar Dust: Contributed Papers," NASA CP-3036 , 1989.

Sandford, S.A., and Allamandola, L.J., "The Physical and Infrared Spectral Properties of CO₂ in Astrophysical Ice Analogs", Astrophys. J. 355, 357- 372, 1990.

Sandford, S.A., and Allamandola, L.J., "The Volume and Surface Binding Energies of Ice Systems Containing CO, CO₂, and H₂O", Icarus 87, 188- 192, 1990.

Allamandola, L.J., The Nature of Interstellar/Precometary Ices, in "The Physics and Composition of Interstrellar Matter", ed. J. Krelowski and J. Papaj (Copernicus University Press, Torun, Poland), 9-36, 1990.

Allamandola, L.J., "Analysis of Frozen Volatiles", Section 2.3.3 of ROSETTA / CNSR A Comet -Nucleus Sample-Return Mission, ESA's ROSETTA Mission & System Definition Document, eds. Schwem, G.H., and Langevin, Y. (ESA Publications, Noordwijk), ESA SP-1125, 47-52, 1991.

Sandford, S.A., Allamandola, L.J., Tielens, A.G.G.M., Sellgren, K., Tapia, M., and Pendleton, Y., The Interstellar C-H Stretching Band Near 3.4 Microns: Contraints on the Composition of Organic Material in the Diffuse Interstellar Medium, Astrophys. J. 371, 607-620, 1991.

Blake, D., Allamandola, L.J., Sandford, S.A., Hudgins, D., and Freund, F., Clathrate Hydrate Formation in Amorphous Cometary Ice Analogs in Vacuo, Science 254, 548-551, 1991.

Allamandola, L.J., Grain Spectroscopy, in "Astrochemistry of Cosmic Phenomena", ed. Singh, P.D. (Kluwer, Dordrecht), 65-72, 1992.

Allamandola, L.J., Sandford, S.A., Tielens, A.G.G.M., and Herbst, T. Spectroscopy of Dense Clouds in the C-H Stretch Region: Methanol and "Diamonds", Astrophys.J. 399, 134-146, 1992.

Hudgins, D.., Sandford, S.A., Allamandola, L.J., and Tielens, A.G.G.M., Mid- and Far- Infrared Spectroscopy of Ices: Optical Constants and Integrated Absorbances , Astrophys. J. Supp. Ser. 86, 713-870, 1993.

Allamandola, L.J., Sandford, S.A., Tielens, A.G.G.M., and Herbst, T. "Diamonds" in Dense Molecular Clouds: A Challenge to the Standard Interstellar Medium Paradigm , Science 260, 64-66, 1993.

Schutte, W.A., Allamandola, L.J., and Sandford, S.A., An Experimental Study of the Organic Molecules Produced in Cometary and Interstellar Ice Analogs By Thermal Formaldehyde Reactions, Icarus 104, 118-137, 1993.

Schutte, W.A., Allamandola, L.J., and Sandford, S.A., Formaldehyde and Organic Molecule Production in Astrophysical Ices at Cryogenic Temperatures, Science 259, 1143-1145, 1993.

Allamandola, L.J., ISO, Dust and PAHs, in "Astronomical Infrared Spectroscopy: Future Observational Directions", ed. S. Kwok, Ast. Soc. Pac. Conf. Ser. 41, 197-206, 1993.

Sandford, S.A., and Allamandola, L.J., H₂ in Interstellar and Extragalactic Ices: Infrared Characteristics, UV Production, and Implications, Astrophys. J (Letters) 409, L65-L68, 1993.

Sandford, S.A., Allamandola, L.J., and Geballe, T.R., Spectroscopic Detection of Molecular Hydrogen Frozen in Interstellar Ices, Science 262, 400-402, 1993.

Sandford, S.A., and Allamandola, L.J., Condensation and Vaporization Studies of CH₃OH and NH₃ Ices: Major Implications for Astrochemistry, Astrophys. J. 417, 815-825, 1993.

Pendleton, Y.J., Sandford, S.A., Allamandola, L.J., Tielens, A.G.G.M., and Sellgren, K., Near Infrared Absorption Spectroscopy of Interstellar Hydrocarbon Grains, Astrophys. J. 437, 683-696, 1994.

Bernstein, M., Sandford, S.A., Allamandola, L.J., and Chang, S., Infrared Spectrum of Matrix-Isolated Hexamethylenetetramine in Ar and H₂O at Cryogenic Temperatures, J. Phys. Chem. 98, 12206-12210, 1994.

Bernstein, M.P., Sandford, S.A., Allamandola, L.J., Chang, S., and Scharberg, M.A. , Organic Compounds Produced by Photolysis of Realistic Interstellar and Cometary Ice Analogs Containing Methanol, Astrophys J. 454, 327-344, 1995.

Sandford, S.A., Pendleton, Y.J., and Allamandola, L.J., The Galactic Distribution of Aliphatic Hydrocarbons in the Diffuse Interstellar Medium, Astrophys. J. 440, 697-705, 1995.

Tielens, A.G.G.M., Wooden, D.H., Allamandola, L.J., Bregman, J., and Witteborn, F.C., The Infrared Spectrum of the Galactic Center and the Composition of Interstellar Dust, Astrophys. J. 461, 210-222, 1996.

Elsila, J., Allamandola, L.J., and Sandford, S.A., The 2140 cm-1 (4.673 µm) Solid CO Band: The Case for Interstellar O₂ and N₂ and the Photochemistry of Non-Polar Interstellar Ice Analogs, Ap. J. 479, 818-838, 1997.

Bernstein, Max P., Sandford, Scott A., and Allamandola, Louis J., The Infrared Spectra of Nitriles and Related Compounds Frozen in Ar and H₂O, Ap. J. 476, 932-942, 1997.

Allamandola, L.J., Sandford, S.A., and Bernstein, M. P., Interstellar/Precometary Organic Material and the Photochemical Evolution of Complex Organics, in "Astronomical and Biochemical Origins and the Search for Life in the Universe", eds C.B. Cosmovici, S. Bowyer, and D. Werthimer, (Editrice Compositori, Bologna), 23-49, 1997.

Sandford, S.A., Allamandola, L.J., and Bernstein, M. P., The Composition and Ultraviolet and Thermal Processing of Interstellar Ices, in "From Stardust to Planetesimals", eds Y. Pendleton and A.G.G.M. Tielens, Ast. Soc. Pacific Conf. Ser.122, (Ast. Soc. Pacific, San Fransisco), 201-213, 1997.

Bernstein, M. P., Sandford, S.A., and Allamandola, L.J., Complex Organics in Laboratory Simulations of Interstellar/Cometary Ices, in "Complex Organics in Space", Advances in Space Research 19, 991-998, 1997

Sandford, Scott A., Allamandola, Louis J., and Bernstein, Max P., Organic Chemistry: From the Interstellar Medium to the Solar System, in "Origins", ASP Conference Series, vol 148, (Ast. Soc. Pacific, San Fransisco), 1998.

Allamandola, L.J., in "The Origin, Composition, and History of Comets from Spectroscopic Studies", in "Analysis of Returned Comet Nucleus Samples", NASA CP-10152, 1997.

Lacy, J.H., Faraji, H., Sandford, S.A., and Allamandola, L.J. Unraveling the 10 µm "Silicate Feature of Protostars: The detection of Frozen Interstellar Ammonia, Ap. J. (Letters) 501, L105-L109, 1998.

Bernstein, M. P., Sandford, S. A., Allamandola, L. J., Gillette, J. S., Clemett, S. J., and Zare, R. N. UV Irradiation of Polycyclic Aromatic Hydrocarbons in Ices: Production of Alcohols, Quinones, and Ethers, Science 283, 1135-1138, 1999.

Allamandola, Louis J., Bernstein, Max P., Sandford, Scott A., and Walker Robert M. Evolution of Interstellar Ices, in "The Origin and Composition of Cometary Material", eds K. Altwegg, P. Ehrenfreund, J. Geiss, and H. Rickman, (ISSI Series), xxx-xxx, 1999, in press.

Bernstein, M. P., Sandford, S. A., and Allamandola, L. J. Molecules from Space and the Origin of Life, Scientific American, to appear in July 1999 issue.

PLANETARY ICES

Salama, F., Allamandola, L.J., Witteborn, F.C., Cruikshank, D.P., Sandford, S.A., and Bregman, J.D., "The 2.5-5.0 µm Spectra of Io: Evidence for H₂S and H₂O Frozen in SO₂", Icarus 83, 66-82, 1990.

Sandford, S.A., and Allamandola, L.J., The Condensation and Vaporization Behavior of Ices Containing SO₂, H₂S, and CO₂: Implications for Io, Icarus 106, 478-488, 1993.

Bohn, R.B., Sandford, S.A., Allamandola, L.J., and Cruikshank, D.P., Infrared Spectroscopy of Triton and Pluto Ice Analogs: The Case for Saturated Hydrocarbons, Icarus 111, 151-173, 1994.

Salama, F., Allamandola, L.J., Sandford, S.A., Bregman, J.D., Witteborn, F.C., and Cruikshank, D.P., Is H₂O present on Io? The Detection of a New Strong Band Near 3590 cm-1 (2.795 µm), Icarus 107, 413-417, 1994.