Search Results - "Marhas, Kuljeet"

Sputtering of Presolar Grains via Galactic Cosmic Rays in the Interstellar Medium by Garg, Akshat, Marhas, Kuljeet K., Goyal, Vikram

“…The sputtering rate of presolar silicon carbide grains due to galactic cosmic rays has been computed for their experimentally deduced lifetimes (∼1 Gyr) in the…”
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Transition Elements in Supernova Presolar Grains: Condensation versus Implantation by Marhas, Kuljeet K., Sharda, Piyush

“…We compute the concentrations of five transition elements (Cr, Fe, Co, Ni, and Zn) via condensation and implantation in supernova presolar grains (Silicon…”
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Multi-element isotopic analyses of presolar graphite grains from Orgueil by Jadhav, Manavi, Zinner, Ernst, Amari, Sachiko, Maruoka, Teruyuki, Marhas, Kuljeet K., Gallino, Roberto

“…We report C, N, O, Si, Al–Mg, K, Ca, and Ti isotopic analyses of presolar graphite grains from the Orgueil CI chondrite. NanoSIMS isotopic measurements were…”
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Isotopic records in CM hibonites: Implications for timescales of mixing of isotope reservoirs in the solar nebula by Liu, Ming-Chang, McKeegan, Kevin D., Goswami, Jitendra N., Marhas, Kuljeet K., Sahijpal, Sandeep, Ireland, Trevor R., Davis, Andrew M.

“…The magnesium isotopic compositions of 26 hibonite-bearing inclusions from the CM chondrite Murchison, as well as isotopic measurements on a subset of these…”
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NanoSIMS Studies of Small Presolar SiC Grains: New Insights into Supernova Nucleosynthesis, Chemistry, and Dust Formation by Hoppe, Peter, Leitner, Jan, Gröner, Elmar, Marhas, Kuljeet K, Meyer, Bradley S, Amari, Sachiko

“…We have studied more than 2000 presolar silicon carbide (SiC) grains from the Murchison CM2 chondrite in the size range 0.2-0.5 {mu}m for C- and Si-isotopic…”
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Iron and Nickel Isotopic Ratios in Presolar SiC Grains by Marhas, Kuljeet K, Amari, Sachiko, Gyngard, Frank, Zinner, Ernst, Gallino, Roberto

“…We report the first Fe isotopic anomalies and the first Ni isotopic ratio measurements in presolar SiC grains of separate KJG from the Murchison meteorite…”
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Meteoritic evidence of a late superflare as source of 7Be in the early Solar System by Mishra, Ritesh Kumar, Marhas, Kuljeet Kaur

“…Fossil meteoritic records of short-lived, now-extinct radionuclides provide crucial high-resolution temporal information about the events, processes and…”
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Elemental Compositions of Comet 81P/Wild 2 Samples Collected by Stardust by Flynn, George J, Bleuet, Pierre, Borg, Janet, Bradley, John P, Brenker, Frank E, Brennan, Sean, Bridges, John, Brownlee, Don E, Bullock, Emma S, Burghammer, Manfred, Clark, Benton C, Dai, Zu Rong, Daghlian, Charles P, Djouadi, Zahia, Fakra, Sirine, Ferroir, Tristan, Floss, Christine, Franchi, Ian A, Gainsforth, Zack, Gallien, Jean-Paul, Gillet, Philippe, Grant, Patrick G, Graham, Giles A, Green, Simon F, Grossemy, Faustine, Heck, Philipp R, Herzog, Gregory F, Hoppe, Peter, Hörz, Friedrich, Huth, Joachim, Ignatyev, Konstantin, Ishii, Hope A, Janssens, Koen, Joswiak, David, Kearsley, Anton T, Khodja, Hicham, Lanzirotti, Antonio, Leitner, Jan, Lemelle, Laurence, Leroux, Hugues, Luening, Katharina, MacPherson, Glenn J, Marhas, Kuljeet K, Marcus, Matthew A, Matrajt, Graciela, Nakamura, Tomoki, Nakamura-Messenger, Keiko, Nakano, Tsukasa, Newville, Matthew, Papanastassiou, Dimitri A, Pianetta, Piero, Rao, William, Riekel, Christian, Rietmeijer, Frans J.M, Rost, Detlef, Schwandt, Craig S, See, Thomas H, Sheffield-Parker, Julie, Simionovici, Alexandre, Sitnitsky, Ilona, Snead, Christopher J, Stadermann, Frank J, Stephan, Thomas, Stroud, Rhonda M, Susini, Jean, Suzuki, Yoshio, Sutton, Stephen R, Taylor, Susan, Teslich, Nick, Troadec, D, Tsou, Peter, Tsuchiyama, Akira, Uesugi, Kentaro, Vekemans, Bart, Vicenzi, Edward P, Vincze, Laszlo, Westphal, Andrew J, Wozniakiewicz, Penelope, Zinner, Ernst, Zolensky, Michael E

“…We measured the elemental compositions of material from 23 particles in aerogel and from residue in seven craters in aluminum foil that was collected during…”
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Editorial to the Topical Collection: Role of Sample Return in Addressing Major Questions in Planetary Sciences by Anand, Mahesh, Russell, Sara, Lin, Yangting, Wadhwa, Meenakshi, Marhas, Kuljeet Kaur, Tachibana, Shogo

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New Stellar Sources for High-Density, Presolar Graphite Grains by Jadhav, Manavi, Amari, Sachiko, Marhas, Kuljeet K, Zinner, Ernst, Maruoka, Teruyuki, Gallino, Roberto

“…We present C, N, O, Si, Al-Mg, K, Ca, and Ti isotopic analyses of seven high-density (ORG1f, [image] g cm super(-3)) graphite grains from Orgueil with…”
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Presolar He and Ne Isotopes in Single Circumstellar SiC Grains by Heck, Philipp R, Marhas, Kuljeet K, Hoppe, Peter, Gallino, Roberto, Baur, Heinrich, Wieler, Rainer

“…Noble gas isotopes in presolar silicon carbide (SiC) dust grains from primitive meteorites provide, together with major element isotopic compositions, insight…”
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Abundance of 60Fe inferred from nanoSIMS study of QUE 97008 (L3.05) chondrules by Mishra, Ritesh Kumar, Marhas, Kuljeet Kaur, Sameer

“…60Fe–60Ni relative chronometry (t1/2=2.62 Ma) studies within silicate phases of two chondrules (Ch1b, Ch5) from the Queen Alexandra Range (QUE) 97008 (L3.05)…”
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Stardust in Stardust-The C, N, and O isotopic compositions of Wild 2 cometary matter in Al foil impacts by Stadermann, Frank J., Hoppe, Peter, Floss, Christine, Heck, Philipp R., Hörz, Friedrich, Huth, Joachim, Kearsley, Anton T., Leitner, Jan, Marhas, Kuljeet K., Mckeegan, Kevin D., Stephan, Thomas

“…— In January 2006, the Stardust mission successfully returned dust samples from the tail of comet 81P/Wild 2 in two principal collection media, low‐density…”
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Late accretion and lithification of chondritic parent bodies: Mg isotope studies on fragments from primitive chondrites and chondritic breccias by Sokol, Anna K., Bischoff, Addi, Marhas, Kuljeet K., Mezger, Klaus, Zinner, Emst

“…— Recent results of isotopic dating studies (182Hf‐182W, 26Al‐26Mg) and the increasing number of observed igneous and metamorphosed fragments in (primitive)…”
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Correlated silicon and titanium isotopic compositions of presolar SiC grains from the Murchison CM2 chondrite by Gyngard, Frank, Amari, Sachiko, Zinner, Ernst, Marhas, Kuljeet Kaur

“…We report correlated Si, and Ti isotopic compositions and elemental concentrations of 238 presolar SiC grains from the Murchison CM2 meteorite. Combined with…”
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SIMS studies of Allende projectiles fired into Stardust-type aluminum foils at 6 km/sec by Hoppe, Peter, Stadermann, Frank J., Stephan, Thomas, Floss, Christine, Leitner, Jan, Marhas, Kuljeet K., Hörz, Friedrich

“…— We have explored the feasibility of C, N, and O isotopic measurements by NanoSIMS and of elemental abundance determinations by time‐of‐flight secondary ion…”
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Inferred initial {sup 26}Al/{sup 27}Al ratios in presolar stardust grains from supernovae are higher than previously estimated by Groopman, Evan, Zinner, Ernst, Amari, Sachiko, Gyngard, Frank, Hoppe, Peter, Jadhav, Manavi, Lin, Yangting, Xu, Yuchen, Marhas, Kuljeet, Nittler, Larry R.

“…We performed an in-depth exploration of the Al–Mg system for presolar graphite, SiC, and Si{sub 3}N{sub 4} grains found to contain large excesses of {sup…”
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Microstructural and Chemical Investigations of Presolar Silicates from Diverse Stellar Environments by Sanghani, Manish N., Lajaunie, Luc, Marhas, Kuljeet Kaur, Rickard, William D. A., Hsiao, Silver Sung-Yun, Peeters, Zan, Shang, Hsien, Lee, Der-Chuen, Calvino, José. J., Bizzarro, Martin

“…We report the structural and chemical investigation of nine presolar silicate grains from the CH3/CB b 3 chondrite Isheyevo and CR2 chondrite Northwest Africa…”
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Comet 81P/Wild 2 Under a Microscope by Brownlee, Don, Aléon, Jérôme, Araki, Tohru, Bland, Phil, Bleuet, Pierre, Bradley, John P, Brearley, Adrian, Browning, Nigel D, Bullock, E, Burchell, Mark J, Busemann, Henner, Butterworth, Anna, Cheuvront, Allan, Chi, Miaofang, Cooper, George, Cordier, Patrick, Dai, Zurong, D'Hendecourt, Louis, Djouadi, Zahia, Dominguez, Gerardo, Duxbury, Tom, Dworkin, Jason P, Fairey, Sam A.J, Ferroir, T, Floss, Christine, Flynn, George, Franchi, Ian A, Gainsforth, Z, Gallien, J.-P, Genge, Matt, Gilles, Mary K, Gillet, Philipe, Gounelle, Matthieu, Grady, Monica M, Green, Simon F, Grossman, Lawrence, Grossman, Jeffrey N, Guan, Yunbin, Hagiya, Kenji, Harvey, Ralph, Ignatyev, Konstantin, Ishii, Hope, Ito, Motoo, Jacobsen, Chris, Joswiak, David, Jurewicz, Amy, Kearsley, Anton T, Khodja, H, Kissel, Jochen, Krot, Alexander, Langenhorst, Falko, Lanzirotti, Antonio, Le, Loan, Leshin, Laurie A, Marhas, Kuljeet, Matrajt, Graciela, McKeegan, Kevin, Meibom, Anders, Nakamura, Tomoki, Nakano, T, Newville, M, Nittler, Larry R, Ohnishi, Ichiro, Ohsumi, Kazumasa, Okudaira, Kyoko, Papanastassiou, Dimitri A, Rietmeijer, Frans J.M, Robert, François, Rotundi, Alessandra, Ryan, Robert, Schwandt, Craig S, Schlutter, Dennis, Simionovici, Alexandre, Simon, Steven, Sitnitsky, I, Stadermann, Frank J, Stroud, Rhonda, Susini, Jean, Taheri, Mitra, Toppani, Alice, Trigo-Rodríguez, Josep M, Tsuchiyama, Akira, Tyliszczak, Tolek, Uesugi, K, Velbel, Michael, Vellenga, Joe, Vicenzi, E, Vincze, L, Warren, Jack, Westphal, Andrew J, Wooden, Diane, Wopenka, Brigitte, Wright, Ian, Yabuta, Hikaru, Yano, Hajime, Zare, Richard N, Zega, Thomas, Ziegler, Karen, Zimmerman, Laurent, Zolensky, Michael

“…The Stardust spacecraft collected thousands of particles from comet 81P/Wild 2 and returned them to Earth for laboratory study. The preliminary examination of…”
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Isotopic Compositions of Cometary Matter Returned by Stardust by McKeegan, Kevin D, Aléon, Jerome, Bradley, John, Brownlee, Donald, Busemann, Henner, Butterworth, Anna, Chaussidon, Marc, Fallon, Stewart, Floss, Christine, Gilmour, Jamie, Gounelle, Matthieu, Graham, Giles, Guan, Yunbin, Heck, Philipp R, Hoppe, Peter, Hutcheon, Ian D, Huth, Joachim, Ishii, Hope, Ito, Motoo, Jacobsen, Stein B, Kearsley, Anton, Leshin, Laurie A, Liu, Ming-Chang, Lyon, Ian, Marhas, Kuljeet, Marty, Bernard, Matrajt, Graciela, Meibom, Anders, Messenger, Scott, Mostefaoui, Smail, Mukhopadhyay, Sujoy, Nakamura-Messenger, Keiko, Nittler, Larry, Palma, Russ, Pepin, Robert O, Papanastassiou, Dimitri A, Robert, François, Schlutter, Dennis, Snead, Christopher J, Stadermann, Frank J, Stroud, Rhonda, Tsou, Peter, Westphal, Andrew, Young, Edward D, Ziegler, Karen, Zimmermann, Laurent, Zinner, Ernst

“…Hydrogen, carbon, nitrogen, and oxygen isotopic compositions are heterogeneous among comet 81P/Wild 2 particle fragments; however, extreme isotopic anomalies…”
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