Zobrazeno 1 - 10
of 464
pro vyhledávání: '"Nittler, Larry R."'
Autor:
Nittler, Larry R, Barosch, Jens, Burgess, Katherine, Stroud, Rhonda M, Wang, Jianhua, Yabuta, Hikaru, Enokido, Yuma, Matsumoto, Megumi, Nakamura, Tomoki, Kebukawa, Yoko, Yamashita, Shohei, Takahashi, Yoshio, Bejach, Laure, Bonal, Lydie, Cody, George D, Dartois, Emmanuel, Dazzi, Alexandre, De Gregorio, Bradley, Deniset-Besseau, Ariane, Duprat, Jean, Engrand, Cécile, Hashiguchi, Minako, Kilcoyne, A. L. David, Komatsu, Mutsumi, Martins, Zita, Mathurin, Jérémie, Montagnac, Gilles, Mostefaoui, Smail, Okumura, Taiga, Quirico, Eric, Remusat, Laurent, Sandford, Scott, Shigenaka, Miho, Suga, Hiroki, Takeichi, Yasuo, Tamenori, Yusuke, Verdier-Paoletti, Maximilien, Wakabayashi, Daisuke, Abe, Masanao, Kamide, Kanami, Miyazaki, Akiko, Nakato, Aiko, Nakazawa, Satoru, Nishimura, Masahiro, Okada, Tatsuaki, Saiki, Takanao, Tanaka, Satoshi, Terui, Fuyuto, Usui, Tomohiro, Yada, Toru, Yogata, Kasumi, Yoshikawa, Makoto, Yurimoto, Hisayoshi, Noguchi, Takaaki, Okazaki, Ryuji, Naraoka, Hiroshi, Sakamoto, Kanako, Tachibana, Shogo, Watanabe, Sei-ichiro, Tsuda, Yuichi
We report the H, C, and N isotopic compositions of microscale (0.2 to 2$\mu$m) organic matter in samples of asteroid Ryugu and the Orgueil CI carbonaceous chondrite. Three regolith particles of asteroid Ryugu, returned by the Hayabusa2 spacecraft, an
Externí odkaz:
http://arxiv.org/abs/2404.08795
Autor:
Liu, Nan, Alexander, Conel M. O'D., Meyer, Bradley S., Nittler, Larry R., Wang, Jianhua, Stroud, Rhonda M.
We report C, N, Si, and Al-Mg isotope data for 39 presolar X silicon carbide (SiC) and four silicon nitride grains - a group of presolar grains that condensed in the remnants of core-collapse Type II supernovae (CCSNe) - isolated from the Murchison m
Externí odkaz:
http://arxiv.org/abs/2312.05347
Autor:
Nittler, Larry R., Boujibar, Asmaa, Crapster-Pregont, Ellen, Frank, Elizabeth A., McCoy, Timothy J., McCubbin, Francis M., Starr, Richard D., Vorburger, Audrey, Weider, Shoshana Z.
Mercury, the innermost planet, formed under highly reduced conditions, based mainly on surface Fe, S, and Si abundances determined from MESSENGER mission data. The minor element Cr may serve as an independent oxybarometer, but only very limited Cr da
Externí odkaz:
http://arxiv.org/abs/2306.11859
Autor:
Singerling, Sheryl A., Nittler, Larry R., Barosch, Jens, Dobrica, Elena, Brearley, Adrian J., Stroud, Rhonda M.
We conducted a TEM study of an unusual oxide-silicate composite presolar grain (F2-8) from the unequilibrated ordinary chondrite Semarkona. The presolar composite grain is relatively large, has an amoeboidal shape, and contains Mg-rich olivine, Mg-Al
Externí odkaz:
http://arxiv.org/abs/2301.08228
Autor:
Liu, Nan, Stephan, Thomas, Cristallo, Sergio, Vescovi, Diego, Gallino, Roberto, Nittler, Larry R., Alexander, Conel M. O' D., Davis, Andrew M.
Publikováno v:
European Physical Journal A, 58, 216 (2022)
We report the Sr and Ba isotopic compositions of 18 presolar SiC grains of types Y (11) and Z (7), rare types commonly argued to have formed in lower-than-solar metallicity asymptotic giant branch (AGB) stars. We find that the Y and Z grains show hig
Externí odkaz:
http://arxiv.org/abs/2209.10347
Autor:
Barosch, Jens, Nittler, Larry R., Wang, Jianhua, Alexander, Conel M. O'D., De Gregorio, Bradley T., Engrand, Cécile, Kebukawa, Yoko, Nagashima, Kazuhide, Stroud, Rhonda M., Yabuta, Hikaru, Abe, Yoshinari, Aléon, Jérôme, Amari, Sachiko, Amelin, Yuri, Bajo, Ken-ichi, Bejach, Laure, Bizzarro, Martin, Bonal, Lydie, Bouvier, Audrey, Carlson, Richard W., Chaussidon, Marc, Choi, Byeon-Gak, Cody, George D., Dartois, Emmanuel, Dauphas, Nicolas, Davis, Andrew M., Dazzi, Alexandre, Deniset-Besseau, Ariane, Di Rocco, Tommaso, Duprat, Jean, Fujiya, Wataru, Fukai, Ryota, Gautam, Ikshu, Haba, Makiko K., Hashiguchi, Minako, Hibiya, Yuki, Hidaka, Hiroshi, Homma, Hisashi, Hoppe, Peter, Huss, Gary R., Ichida, Kiyohiro, Iizuka, Tsuyoshi, Ireland, Trevor R., Ishikawa, Akira, Ito, Motoo, Itoh, Shoichi, Kamide, Kanami, Kawasaki, Noriyuki, Kilcoyne, A. L. David, Kita, Noriko T., Kitajima, Kouki, Kleine, Thorsten, Komatani, Shintaro, Komatsu, Mutsumi, Krot, Alexander N., Liu, Ming-Chang, Martins, Zita, Masuda, Yuki, Mathurin, Jérémie, McKeegan, Kevin D., Montagnac, Gilles, Morita, Mayu, Mostefaoui, Smail, Motomura, Kazuko, Moynier, Frédéric, Nakai, Izumi, Nguyen, Ann N., Ohigashi, Takuji, Okumura, Taiga, Onose, Morihiko, Pack, Andreas, Park, Changkun, Piani, Laurette, Qin, Liping, Quirico, Eric, Remusat, Laurent, Russell, Sara S., Sakamoto, Naoya, Sandford, Scott A., Schönbächler, Maria, Shigenaka, Miho, Suga, Hiroki, Tafla, Lauren, Takahashi, Yoshio, Takeichi, Yasuo, Tamenori, Yusuke, Tang, Haolan, Terada, Kentaro, Terada, Yasuko, Usui, Tomohiro, Verdier-Paoletti, Maximilien, Wada, Sohei, Wadhwa, Meenakshi, Wakabayashi, Daisuke, Walker, Richard J., Yamashita, Katsuyuki, Yamashita, Shohei, Yin, Qing-Zhu, Yokoyama, Tetsuya, Yoneda, Shigekazu, Young, Edward D., Yui, Hiroharu, Zhang, Ai-Cheng, Abe, Masanao, Miyazaki, Akiko, Nakato, Aiko, Nakazawa, Satoru, Nishimura, Masahiro, Okada, Tatsuaki, Saiki, Takanao, Tanaka, Satoshi, Terui, Fuyuto, Tsuda, Yuichi, Watanabe, Sei-ichiro, Yada, Toru, Yogata, Kasumi, Yoshikawa, Makoto, Nakamura, Tomoki, Naraoka, Hiroshi, Noguchi, Takaaki, Okazaki, Ryuji, Sakamoto, Kanako, Tachibana, Shogo, Yurimoto, Hisayoshi
Publikováno v:
2022, The Astrophysical Journal Letters, 935, L3 (12pp)
We have conducted a NanoSIMS-based search for presolar material in samples recently returned from C-type asteroid Ryugu as part of JAXA's Hayabusa2 mission. We report the detection of all major presolar grain types with O- and C-anomalous isotopic co
Externí odkaz:
http://arxiv.org/abs/2208.07976
Autor:
Singerling, Sheryl A., Nittler, Larry R., Barosch, Jens, Dobrica, Elena, Brearley, Adrian J., Stroud, Rhonda M.
We investigated six presolar grains from very primitive regions of the matrix in the unequilibrated ordinary chondrite Semarkona with TEM. These grains include one SiC, one oxide (Mg-Al spinel), and four silicates. Structural and elemental compositio
Externí odkaz:
http://arxiv.org/abs/2205.04372
Autor:
Liu, Nan, Barosch, Jens, Nittler, Larry R., Alexander, Conel M. O D., Wang, Jianhua, Cristallo, Sergio, Busso, Maurizio, Palmerini, Sara
Publikováno v:
The Astrophysical Journal Letters, 2021
We report NanoSIMS Si and Mg-Al isotopic data (and C, N, and Ti isotopic data when available) for 85 submicron- to micron-sized presolar SiC grains from the CM2 Murchison meteorite, including 60 MS, 8 AB1, 8 X, 7 AB2, and 2 Y grains. The MS and Y gra
Externí odkaz:
http://arxiv.org/abs/2110.06205
Autor:
Singerling, Sheryl A., Liu, Nan, Nittler, Larry R., Alexander, Conel M. O'D., Stroud, Rhonda M.
Publikováno v:
ApJ 913 90 (2021)
Presolar silicon carbide (SiC) grains in meteoritic samples can help constrain circumstellar condensation processes and conditions in C-rich stars and core-collapse supernovae. This study presents our findings on eight presolar SiC grains from AGB st
Externí odkaz:
http://arxiv.org/abs/2105.13960
Autor:
Boujibar, Asmaa, Howell, Samantha, Zhang, Shuang, Hystad, Grethe, Prabhu, Anirudh, Liu, Nan, Stephan, Thomas, Narkar, Shweta, Eleish, Ahmed, Morrison, Shaunna M., Hazen, Robert M., Nittler, Larry R.
Cluster analysis of presolar silicon carbide grains based on literature data for 12C/13C, 14N/15N, {\delta}30Si/28Si, and {\delta}29Si/28Si including or not inferred initial 26Al/27Al data, reveals nine clusters agreeing with previously defined grain
Externí odkaz:
http://arxiv.org/abs/2012.04009