The origin and fate of volatile elements on Earth revisited in light of noble gas data obtained from comet 67P/Churyumov-GerasimenkoOPEN ACCESS
David V. Bekaert, Michael W. Broadley & Bernard Marty Scientific Reports, Volume 10, Article number: 5796 (2020) LINK (OPEN ACCESS) PDF (OPEN ACCESS) “The origin of terrestrial volatiles remains one of the most puzzling questions…
FIB‐TEM analysis of cometary material in 10 Stardust foil craters
Brendan A. Haas, Christine Floss, Rhonda M. Stroud, Ryan C. Ogliore Meteoritics & Planetary Science First Published: 27 January 2020 LINK “Aluminum foils from the Stardust cometary dust collector contain impact craters formed during the…
Physical properties of Taurid meteoroids of various sizesOPEN ACCESS
Jiří Borovička, Pavel Spurný Planetary and Space Science Available online 24 January 2020 PDF (OPEN ACCESS) LINK “Highlights • Atmospheric fragmentation of Taurid meteoroids was modeled. • The strength of large Taurids is lower than…
Interstellar Visitors: A Physical Characterization of Comet C/2019 Q4 (Borisov) with OSIRIS at the 10.4 m GTC
Julia de Leon, Javier Licandro, Miquel Serra-Ricart, Antonio Cabrera-Lavers, Joan Font Serra, Riccardo Scarpa, Carlos de la Fuente Marcos,.and Raúl de la Fuente Marcos Draft version September 13, 2019preprint, AAS20106 PDF (download) AV data “Comet…
Exposure Experiments of Amorphous Silicates and Organics to Cometary Ice and Vapor AnalogsOPEN ACCESS
Aki Takigawa, Yoshihiro Furukawa, Yuki Kimura, Björn Davidsson, and Tomoki Nakamura The Astrophysical Journal, Volume 881, Number 1 Published 2019 August 8 LINK (OPEN ACCESS) PDF (OPEN ACCESS) “Hydration is a major mineral alteration process…
Disintegration of the Chelyabinsk cosmic body
O.G. Gladysheva Planetary and Space Science Available online 5 August 2019 LINK “Highlights • The results of calculations made it possible to propose an alternative scenario. • The Chelyabinsk cosmic body could be a combination…
Elemental and molecular abundances in comet 67P/Churyumov-GerasimenkoOPEN ACCESS
Martin Rubin, Kathrin Altwegg, Hans Balsiger, Jean-Jacques Berthelier, Michael R. Combi, Johan De Keyser, Maria Drozdovskaya, Björn Fiethe, Stephen A. Fuselier, Sébastien Gasc, Tamas I. Gombosi, Nora Hänni, Kenneth C. Hansen, Urs Mall, Henri Rème,…
A cometary building block in a primitive asteroidal meteorite
Larry R. Nittler, Rhonda M. Stroud, Josep M. Trigo-Rodríguez, Bradley T. De Gregorio, Conel M. O’D. Alexander, Jemma Davidson, Carles E. Moyano-Cambero & Safoura Tanbakouei Nature Astronomy (2019) Published: 15 April 2019 LINK “Meteorites originating…
GEMS, hydrated chondritic IDPs, CI‐matrix material: Sources of water in 81P/comet Wild 2
Frans J. M. Rietmeijer Meteoritics & Planetary Science First published: 14 October 2018 LINK “So far there is no conclusive evidence for water in the nucleus of 81P/comet Wild 2. Recently magnetite in collected Wild…
Comparison of GEMS in interplanetary dust particles and GEMS‐like objects in a Stardust impact track in aerogel
Hope A. Ishii Meteoritics & Planetary Science First published: 5 August 2018 LINK “Comet 81P/Wild 2 dust, the first comet sample of known provenance, was widely expected to resemble anhydrous chondritic porous (CP) interplanetary dust…
Meteor showers from active asteroids and dormant comets in near-Earth space: a reviewOPEN ACCESS
Quan-Zhi Ye Planetary and Space Science in press PDF (OPEN ACCESS) “Small bodies in the solar system are conventionally classified into asteroids and comets. However, it is recently found that a small number of objects…
Identification of meteorite source regions in the solar systemOPEN ACCESS
Mikael Granvik, Peter Brown Icarus Available online 14 April 2018 LINK (OPEN ACCESS) PDF (OPEN ACCESS) “Over the past decade there has been a large increase in the number of automated camera networks that monitor…
Carbon-rich dust in comet 67P/Churyumov-Gerasimenko measured by COSIMA/Rosetta
UPDATE (24 January 2018) Errata: Searching for calcium-aluminum-rich inclusions in cometary particles with Rosetta/COSIMA LINK Anaïs Bardy, Donia Baklouti, Hervé Cottin, Nicolas Fray, Christelle Briois, John Paquette, Oliver Stenzel, Cécile Engrand, Henning Fischer, Klaus Hornung,…
Similarities in Element Content between Comet 67P/Churyumov-Gerasimenko Coma Dust and Selected Meteorite Samples
Oliver J. Stenzel, Martin Hilchenbach, Sihane Merouane, John Paquette, Kurt Varmuza, Cécile Engrand, Franz Brandstätter, Christian Koeberl, Ludovic Ferrière, Peter Filzmoser Mon Not R Astron Soc doi.org/10.1093/mnras/stx1908 LINK “We have analyzed the element composition and…
Magnetite in Comet Wild 2: Evidence for parent body aqueous alterationOPEN ACCESS
Hicks, L. J., Macarthur, J. L., Bridges, J. C., Price, M. C., Wickham-Eade, J. E., Burchell, M. J., Hansford, G. M., Butterworth, A. L., Gurman, S. J., Baker, S. H. Meteorit Planet Sci. doi:10.1111/maps.12909 LINK…
The future of Stardust scienceOPEN ACCESS
Westphal, A. J., Bridges, J. C., Brownlee, D. E., Butterworth, A. L., De Gregorio, B. T., Dominguez, G., Flynn, G. J., Gainsforth, Z., Ishii, H. A., Joswiak, D., Nittler, L. R., Ogliore, R. C., Palma,…
Refractory materials in comet samples.OPEN ACCESS
Joswiak, D. J., Brownlee, D. E., Nguyen, A. N., Messenger, S. Meteorit Planet Sci. doi:10.1111/maps.12877 LINK “Transmission electron microscope examination of more than 250 fragments, >1 μm from comet Wild 2 and a giant cluster…
Cometary dust: the diversity of primitive refractory grainsOPEN ACCESS
D. H.Wooden, H. A.Ishii, M. E.Zolensky Phil. Trans. R. Soc. A 2017 375 20160260; DOI: 10.1098/rsta.2016.0260. Published 29 May 2017 Review article LINK (OPEN ACCESS) PDF (OPEN ACCESS) “Comet dust is primitive and shows significant…
Origin of crystalline silicates from Comet 81P/Wild 2: Combined study on their oxygen isotopes and mineral chemistry
Céline Defouilloy, Daisuke Nakashima, David J. Joswiak, Donald E. Brownlee, Travis J. Tenner, Noriko T. Kita Earth and Planetary Science Letters, Volume 465, 1 May 2017, Pages 145-154 LINK “Highlights • 7 silicates grains from…
Impact of radiogenic heating on the formation conditions of comet 67P/Churyumov-GerasimenkoOPEN ACCESS
O. Mousis, A. Drouard, P. Vernazza, J. I. Lunine, M. Monnereau, R. Maggiolo, K. Altwegg, H. Balsiger, J.-J. Berthelier, G. Cessateur, J. De Keyser, S. A. Fuselier, S. Gasc, A. Korth, T. Le Deun, U….
Spectra and physical properties of Taurid meteoroids
Pavol Matlovič, Juraj Tóth, Regina Rudawska, Leonard Kornoš Planetary and Space Science In Press, Accepted Manuscript, Available online 13 February 2017 LINK “Highlights • The widest spectral classification of Taurid meteors to date is presented….
Fine-Grained CAIs in Comet Samples: Moderate Refractory Character and Comparison to Small Refractory Inclusions in Chondrites
D. J. Joswiak, D. E. Brownlee, A. N. Nguyen, S. Messenger 48th Lunar and Planetary Science Conference (2017), Abstract #1646 LINK
Diversity of the initial rocky planetary building materials at the edge of the solar system
Brownlee, D. E. and Joswiak, D. J. Meteoritics & Planetary Science. doi: 10.1111/maps.12804 First published: 9 December 2016 LINK “Asteroids and comets are surviving members of the vast planetesimal population that was distributed across the…
Mid-infrared spectra of comet nucleiOPEN ACCESS
Michael S.P. Kelley, Charles E. Woodward, Robert D. Gehrz, William T. Reach, David E. Harker Icarus (in Press) PDF (OPEN ACCESS) abstract “Highlights • We observed two comet nuclei with the Spitzer Space Telescope. •…
Evidence for geologic processes on cometsOPEN ACCESS
Jessica M. Sunshine, Nicolas Thomas, Mohamed R. El‐Maarry, Tony L. Farnham Journal of Geophysical Research Review article DOI: 10.1002/2016JE005119 First published: 7 November 2016 LINK (OPEN ACCESS) PDF (OPEN ACCESS) “Spacecraft missions have resolved the…
High-molecular-weight organic matter in the particles of comet 67P/Churyumov–Gerasimenko
Nicolas Fray, Anaïs Bardyn, Hervé Cottin, Kathrin Altwegg, Donia Baklouti, Christelle Briois, Luigi Colangeli, Cécile Engrand, Henning Fischer, Albrecht Glasmachers, Eberhard Grün, Gerhard Haerendel, Hartmut Henkel, Herwig Höfner, Klaus Hornung, Elmar K. Jessberger, Andreas Koch,…
The primordial nucleus of comet 67P/Churyumov-GerasimenkoOPEN ACCESS
B. J. R. Davidsson, H. Sierks, C. Güttler, F. Marzari, M. Pajola, H. Rickman, M. F. A’Hearn, A.-T. Auger, M. R. El-Maarry, S. Fornasier et al. (38 more) Astronomy Volume 592, August 2016 A&A 592,…
Prebiotic chemicals—amino acid and phosphorus—in the coma of comet 67P/Churyumov-Gerasimenko
Kathrin Altwegg, Hans Balsiger, Akiva Bar-Nun, Jean-Jacques Berthelier, Andre Bieler, Peter Bochsler, Christelle Briois, Ursina Calmonte, Michael R. Combi, Hervé Cottin, Johan De Keyser, Frederik Dhooghe, Bjorn Fiethe, Stephen A. Fuselier, Sébastien Gasc, Tamas I….
Searching for calcium-aluminum-rich inclusions in cometary particles with Rosetta/COSIMA.
Paquette, J. A., Engrand, C., Stenzel, O., Hilchenbach, M., Kissel, J. and the COSIMA Team Meteoritics & Planetary Science. doi: 10.1111/maps.12669 LINK “The calcium-aluminum-rich inclusions (CAIs) found in chondritic meteorites are probably the oldest solar…
Origin of molecular oxygen in Comet 67P/Churyumov-Gerasimenko
O. Mousis, T. Ronnet, B. Brugger, O. Ozgurel, F. Pauzat, Y. Ellinger, R. Maggiolo, P. Wurz, P. Vernazza, J. I. Lunine, A. Luspay-Kuti, K. E. Mandt, K. Altwegg, A. Bieler, A. Markovits, M. Rubin The…
A protosolar nebula origin for the ices agglomerated by Comet 67P/Churyumov-Gerasimenko
O. Mousis, J. I. Lunine, A. Luspay-Kuti, T. Guillot, B. Marty, M. Ali-Dib, P. Wurz, K. Altwegg, A. Bieler, M. Hässig, M. Rubin, P. Vernazza, J. H. Waite The Astrophysical Journal Letters, in press PDF…
Inner solar system material discovered in the Oort cloud
By Karen J. Meech, Bin Yang, Jan Kleyna, Olivier R. Hainaut, Svetlana Berdyugina, Jacqueline V. Keane, Marco Micheli, Alessandro Morbidelli, Richard J. Wainscoat Science Advances 29 Apr 2016: Vol. 2, no. 4, e1600038 DOI: 10.1126/sciadv.1600038…
Refractory and semi-volatile organics at the surface of comet 67P/Churyumov-Gerasimenko: Insights from the VIRTIS/ROSETTA Imaging Spectrometer
E. Quirico, L.V. Moroz, B. Schmitt, G. Arnold, M. Faure, P. Beck, L. Bonal, M. Ciarniello, F. Capaccioni, G. Filacchione, S. Erard, C. Leyrat, D. Bockelée-Morvan, A. Zinzi, E. Palomba, P. Drossart, F. Tosi, M.T….
A homogeneous nucleus for comet 67P/Churyumov–Gerasimenko from its gravity field
M. Pätzold T. Andert M. Hahn S. W. Asmar J.-P. Barriot M. K. Bird B. Häusler K. Peter S. Tellmann E. Grün P. R. Weissman H. Sierks L. Jorda R. Gaskell F. Preusker F. Scholten…
Typology of dust particles collected by the COSIMA mass spectrometer in the inner coma of 67P/Churyumov Gerasimenko
Y. Langevin, M. Hilchenbach, N. Ligier, S. Merouane, K. Hornung, C. Engrand, R. Schulz, J. Kissel, J. Rynö, P. Eng, the COSIMA team Icarus In Press, Accepted Manuscript, Available online 29 January 2016 doi:10.1016/j.icarus.2016.01.027 LINK…
2P/Encke, the Taurid complex NEOs and the Maribo and Sutter’s Mill meteorites
C. Tubiana, C. Snodgrass, R. Michelsen, H. Haack, H. Boehnhardt, A. Fitzsimmons, I. P. Williams in press in A&A PDF (full text) abstract “The Taurid meteoroid stream has long been linked with 2P/Encke owing to…
The survivability of phyllosilicates and carbonates impacting Stardust Al foils: Facilitating the search for cometary water.
Wozniakiewicz, P. J., Ishii, H. A., Kearsley, A. T., Bradley, J. P., Price, Mark. C., Burchell, M. J., Teslich, N. and Cole, M. J. Meteoritics & Planetary Science. doi: 10.1111/maps.12568 LINK
Interstellar Detection of Methyl Isocyanate CH3NCO in Sgr B2(N): A Link from Molecular Clouds to Comets
D. T. Halfen et al The Astrophysical Journal Letters 2015 ApJ 812 L5 LINK “A new interstellar molecule, CH 3NCO (methyl isocyanate), has been detected using the 12 m telescope of the Arizona Radio Observatory…
Two independent and primitive envelopes of the bilobate nucleus of comet 67P
Matteo Massironi, Emanuele Simioni, Francesco Marzari, Gabriele Cremonese, Lorenza Giacomini + et al. Nature (28 September 2015) | doi:10.1038/nature15511 LINK “The factors shaping cometary nuclei are still largely unknown, but could be the result of…
Detection of argon in the coma of comet 67P/Churyumov-Gerasimenko
By Hans Balsiger, Kathrin Altwegg, Akiva Bar-Nun, Jean-Jacques Berthelier, Andre Bieler, Peter Bochsler, Christelle Briois, Ursina Calmonte, Michael Combi, Johan De Keyser, Peter Eberhardt, Björn Fiethe, Stephen A. Fuselier, Sébastien Gasc, Tamas I. Gombosi, Kenneth…
The diurnal cycle of water ice on comet 67P/Churyumov–Gerasimenko
M. C. De Sanctis, F. Capaccioni, M. Ciarniello, G. Filacchione, M. Formisano + et al. Nature 525, 500–503 (24 September 2015) | doi:10.1038/nature14869 LINK “Observations of cometary nuclei have revealed a very limited amount of…
The smallest comet 81P/Wild 2 dust dances around the CI composition.
Rietmeijer, F. J. M. Meteoritics & Planetary Science. doi: 10.1111/maps.12510 LINK “The bulbous Stardust track #80 (C2092,3,80,0,0) is a huge cavity. Allocations C2092,2,80,46,1 nearest the entry hole and C2092,2,80,47,6 about 0.8 mm beneath the entry…
Rapid Temperature Changes and the Early Activity on Comet 67P/Churyumov–Gerasimenko
V. Alí-Lagoa, M. Delbo’, and G. Libourel ApJ 810 L22. doi:10.1088/2041-8205/810/2/L22 The Astrophysical Journal Letters Volume 810 Number 2 Received 5 Juli 2015, accepted for publication 12 August 2015. Published 3 September 2015. LINK PDF…
Observation of charged nanograins at comet 67P/Churyumov‐Gerasimenko
J. L. Burch, T. I. Gombosi, G. Clark, P. Mokashi, R. Goldstein Geophysical Research Letters DOI: 10.1002/2015GL065177 LINK (open access)
Evidence for Pebbles in Comets
K.A. Kretke, H.F. Levison Icarus In Press, Accepted Manuscript, Available online 20 August 2015 PDF (full text) abstract
Survival of refractory presolar grain analogs during Stardust-like impact into Al foils: Implications for Wild 2 presolar grain abundances and study of the cometary fine fraction
Croat, T. K., Floss, C., Haas, B. A., Burchell, M. J. and Kearsley, A. T. Meteoritics & Planetary Science. doi: 10.1111/maps.12474 LINK
Large heterogeneities in comet 67P as revealed by active pits from sinkhole collapse
Jean-Baptiste Vincent Dennis Bodewits Sébastien Besse Holger Sierks Cesare Barbieri Philippe Lamy Rafael Rodrigo Detlef Koschny Hans Rickman Horst Uwe Keller Jessica Agarwal Michael F. A’Hearn Anne-Thérèse Auger M. Antonella Barucci Jean-Loup Bertaux Ivano Bertini…
Measurements of the Near-Nucleus Coma of Comet 67P/Churyumov-Gerasimenko with the Alice Far-Ultraviolet Spectrograph on Rosetta
Paul D. Feldman, Michael F. A’Hearn, Jean-Loup Bertaux, Lori M. Feaga, Joel Wm. Parker, Eric Schindhelm, Andrew J. Steffl, S. Alan Stern, Harold A. Weaver, Holger Sierks, Jean-Baptiste Vincent, JHU, UMd, LATMOS, SwRI, JHU/APL, MPIS…
Peptide synthesis triggered by comet impacts: a possible method for peptide delivery to the early Earth and icy satellites
Haruna Sugahara, Koichi Mimura Icarus In Press, available online 4 May 2015 doi:10.1016/j.icarus.2015.04.029 LINK
Constraints on the formation environment of two chondrule-like igneous particles from comet 81P/Wild 2
Gainsforth, Z., Butterworth, A. L., Stodolna, J., Westphal, A. J., Huss, G. R., Nagashima, K., Ogliore, R., Brownlee, D. E., Joswiak, D., Tyliszczak, T. and Simionovici, A. S. Meteoritics & Planetary Science. doi: 10.1111/maps.12445 LINK
Oxygen Isotopic Composition of coarse- and fine-grained material from Comet 81P/Wild 2
Ryan C. Ogliore, Kazuhide Nagashima, Gary R. Huss, Andrew J. Westphal, Zack Gainsforth, Anna L. Butterworth Geochimica et Cosmochimica Acta In Press, Accepted Manuscript, Available online 24 April 2015 doi:10.1016/j.gca.2015.04.028 LINK Individual particles from comet…
The nonmagnetic nucleus of comet 67P/Churyumov-Gerasimenko
Hans-Ulrich Auster, Istvan Apathy, Gerhard Berghofer, Karl-Heinz Fornacon, Anatoli Remizov, Chris Carr, Carsten Güttler, Gerhard Haerendel, Philip Heinisch, David Hercik, Martin Hilchenbach, Ekkehard Kührt, Werner Magnes, Uwe Motschmann, Ingo Richter, Christopher T. Russell, Anita Przyklenk,…
Molecular nitrogen in comet 67P/Churyumov-Gerasimenko indicates a low formation temperature
M. Rubin, K. Altwegg, H. Balsiger, A. Bar-Nun, J.-J. Berthelier, A. Bieler, P. Bochsler, C. Briois, U. Calmonte, M. Combi, J. De Keyser, F. Dhooghe, P. Eberhardt, B. Fiethe, S. A. Fuselier, S. Gasc, T….
Density and Charge of Pristine Fluffy Particles from Comet 67P/Churyumov–Gerasimenko
M. Fulle et al. The Astrophysical Journal Letters Volume 802 Number 1 ApJ 802 L12. doi:10.1088/2041-8205/802/1/L12 published 24 März 2015 LINK
Neutral Na in Cometary Tails as a Remnant of Early Aqueous Alteration
Y. Ellinger, F. Pauzat, O. Mousis, A. Guilbert-Lepoutre, F. Leblanc, M. Ali-Dib, M. Doronin, E. Zicler, and A. Doressoundiram The Astrophysical Journal Letters Volume 801 Number 2 ApJ 801 L30. doi:10.1088/2041-8205/801/2/L30 LINK
Comet 67P/Churyumov-Gerasimenko sheds dust coat accumulated over the past four years
R. Schulz et al Nature (2015), doi:10.1038/nature14159 LINK
67P/Churyumov-Gerasimenko, a Jupiter family comet with a high D/H ratio
K. Altwegg, H. Balsiger, A. Bar-Nun, J. J. Berthelier, A. Bieler, P. Bochsler, C. Briois, U. Calmonte, M. Combi, J. De Keyser, P. Eberhardt, B. Fiethe, S. Fuselier, S. Gasc, T. I. Gombosi, K.C. Hansen,…
Importance of water and organics in the early Solar System: From interstellar inheritance to planet formation
Conel M.O’D. Alexander (DTM, Carnegie Institution of Washington) PDF LINK
Cometary dust in Antarctic ice and snow: Past and present chondritic porous micrometeorites preserved on the Earth’s surface
Takaaki Noguchi, Noriaki Ohashi, Shinichi Tsujimoto, Takuya Mitsunari, John P. Bradley, Tomoki Nakamura, Shoichi Toh, Thomas Stephan, Naoyoshi Iwata, Naoya Imae Earth and Planetary Science Letters Volume 410, 15 January 2015, Pages 1–11 available online…
The capabilities of ROSINA/DFMS to measure argon isotopes at comet 67P/Churyumov-Gerasimenko
M. Hässig, K. Altwegg, J.J. Berthelier, U. Calmonte, T.I. Gombosi, J. De Keyser, B. Fiethe, S.A. Fuselier, L. Le Roy, T. Owen, M. Rubin Planetary and Space Science available online 20 November 2014 doi:10.1016/j.pss.2014.11.015 LINK
Dynamical Features and Spatial Structures of the Plasma Interaction Region of 67P/Churyumov-Gerasimenko and the Solar Wind
C. Koenders, K.-H. Glassmeier, I. Richter, H. Ranocha, U. Motschmann Planetary and Space Science, available online 20 November 2014 doi:10.1016/j.pss.2014.11.014 LINK
A kinetic study of the formation of organic solids from formaldehyde: Implications for the origin of extraterrestrial organic solids in primitive solar system objects
Yoko Kebukawa, George D. Cody Icarus available online 15 November 2014 LINK
PHILAE Lander has switched to stand by due to low power. All instruments off. – TIME TO CELEBRATE !
PHILAE Lander has switched to stand by due to low power. All instruments off. – TIME TO CELEBRATE ! (updated: 15 November, 00:36 UTC) Philae and Rosetta – scientific results will be presented at the…
AMBITION: PHILAE touch down: 12 November ~16:35 CET
LINK AMBITION (HD) (Lukasz Sobisz, Simulation TD, Platige Image) Lukasz Sobisz (quote from AMBITION – The Making Of)
Impact chemistry of methanol: Implications for volatile evolution on icy satellites and dwarf planets, and cometary delivery to the Moon
Yasuhito Sekine, Hidenori Genda, Yuta Muto, Seiji Sugita, Toshihiko Kadono, Takafumi Matsui Icarus Available online 27 August 2014 DOI: 10.1016/j.icarus.2014.08.034 LINK
Shock synthesis of amino acids from impacting cometary and icy planet surface analogues
Howard et al. (2013) Nature Geoscience 6, 1018–1022 (2013) doi:10.1038/ngeo1996 LINK (abstract)
Biomass preservation in impact melt ejecta
Martins Z, Price MC, Goldman N, Sephton MA and Burchell MJ (2013) Nature Geoscience 6, 1045–1049 (2013) doi:10.1038/ngeo1930 LINK (abstract)
The Provenances of Asteroids, and Their Contributions to the Volatile Inventories of the Terrestrial Planets
C. M. O’D. Alexander, R. Bowden, M. L. Fogel, K. T. Howard, C. D. K. Herd, L. R. Nittler Published Online July 12 2012 Science 10 August 2012: Vol. 337 no. 6095 pp. 721-723 DOI:…
Establishing a molecular relationship between chondritic and cometary organic solids
George D. Cody, Emily Heying, Conel M. O. Alexander, Larry R. Nittler, A. L. David Kilcoyne, Scott A. Sandford and Rhonda M. Stroud PNAS 2011 108 (48) 19171-19176; published ahead of print April 4, 2011,…
