Skip to content

Research at St Andrews

Titanium isotope source relations and the extent of mixing in the proto-Solar nebula examined by Independent Component Analysis

Research output: Contribution to journalArticlepeer-review

Standard

Titanium isotope source relations and the extent of mixing in the proto-Solar nebula examined by Independent Component Analysis. / Steele, Robert C. J.; Boehnke, Patrick.

In: Astrophysical Journal, Vol. 802, No. 2, 25.03.2015.

Research output: Contribution to journalArticlepeer-review

Harvard

Steele, RCJ & Boehnke, P 2015, 'Titanium isotope source relations and the extent of mixing in the proto-Solar nebula examined by Independent Component Analysis', Astrophysical Journal, vol. 802, no. 2. https://doi.org/10.1088/0004-637X/802/2/80

APA

Steele, R. C. J., & Boehnke, P. (2015). Titanium isotope source relations and the extent of mixing in the proto-Solar nebula examined by Independent Component Analysis. Astrophysical Journal, 802(2). https://doi.org/10.1088/0004-637X/802/2/80

Vancouver

Steele RCJ, Boehnke P. Titanium isotope source relations and the extent of mixing in the proto-Solar nebula examined by Independent Component Analysis. Astrophysical Journal. 2015 Mar 25;802(2). https://doi.org/10.1088/0004-637X/802/2/80

Author

Steele, Robert C. J. ; Boehnke, Patrick. / Titanium isotope source relations and the extent of mixing in the proto-Solar nebula examined by Independent Component Analysis. In: Astrophysical Journal. 2015 ; Vol. 802, No. 2.

Bibtex - Download

@article{2abafc1bd98140fda1c2288559cacf87,
title = "Titanium isotope source relations and the extent of mixing in the proto-Solar nebula examined by Independent Component Analysis",
abstract = "The Ti isotope variations observed in hibonites represent some of the largest isotope anomalies observed in the solar system. Titanium isotope compositions have previously been reported for a wide variety of different early solar system materials, including calcium, aluminum rich inclusions (CAIs) and CM hibonite grains, some of the earliest materials to form in the solar system, and bulk meteorites which formed later. These data have the potential to allow mixing of material to be traced between many different regions of the early solar system. We have used independent component analysis to examine the mixing end-members required to produce the compositions observed in the different data sets. The independent component analysis yields results identical to a linear regression for the bulk meteorites. The components identified for hibonite suggest that most of the grains are consistent with binary mixing from one of three highly anomalous nucleosynthetic sources. Comparison of these end-members show that the sources which dominate the variation of compositions in the meteorite parent body forming regions was not present in the region in which the hibonites formed. This suggests that the source which dominates variation in Ti isotope anomalies between the bulk meteorites was not present when the hibonite grains were forming. One explanation is that the bulk meteorite source may not be a primary nucleosynthetic source but was created by mixing two or more of the hibonite sources. Alternatively, the hibonite sources may have been diluted during subsequent nebula processing and are not a dominant solar system signatures.",
keywords = "Astrochemistry, Meteorites, meteors, meteoroids, Methods: statistical, Nuclear reactions, Nucleosynthesis, Abundances, Protoplanetary disks, Supernovae: general",
author = "Steele, {Robert C. J.} and Patrick Boehnke",
note = "We are grateful for funding for this work from UCLA and NASA Cosmochemistry (grant NNX13AD13G).",
year = "2015",
month = mar,
day = "25",
doi = "10.1088/0004-637X/802/2/80",
language = "English",
volume = "802",
journal = "Astrophysical Journal",
issn = "0004-637X",
publisher = "American Astronomical Society",
number = "2",

}

RIS (suitable for import to EndNote) - Download

TY - JOUR

T1 - Titanium isotope source relations and the extent of mixing in the proto-Solar nebula examined by Independent Component Analysis

AU - Steele, Robert C. J.

AU - Boehnke, Patrick

N1 - We are grateful for funding for this work from UCLA and NASA Cosmochemistry (grant NNX13AD13G).

PY - 2015/3/25

Y1 - 2015/3/25

N2 - The Ti isotope variations observed in hibonites represent some of the largest isotope anomalies observed in the solar system. Titanium isotope compositions have previously been reported for a wide variety of different early solar system materials, including calcium, aluminum rich inclusions (CAIs) and CM hibonite grains, some of the earliest materials to form in the solar system, and bulk meteorites which formed later. These data have the potential to allow mixing of material to be traced between many different regions of the early solar system. We have used independent component analysis to examine the mixing end-members required to produce the compositions observed in the different data sets. The independent component analysis yields results identical to a linear regression for the bulk meteorites. The components identified for hibonite suggest that most of the grains are consistent with binary mixing from one of three highly anomalous nucleosynthetic sources. Comparison of these end-members show that the sources which dominate the variation of compositions in the meteorite parent body forming regions was not present in the region in which the hibonites formed. This suggests that the source which dominates variation in Ti isotope anomalies between the bulk meteorites was not present when the hibonite grains were forming. One explanation is that the bulk meteorite source may not be a primary nucleosynthetic source but was created by mixing two or more of the hibonite sources. Alternatively, the hibonite sources may have been diluted during subsequent nebula processing and are not a dominant solar system signatures.

AB - The Ti isotope variations observed in hibonites represent some of the largest isotope anomalies observed in the solar system. Titanium isotope compositions have previously been reported for a wide variety of different early solar system materials, including calcium, aluminum rich inclusions (CAIs) and CM hibonite grains, some of the earliest materials to form in the solar system, and bulk meteorites which formed later. These data have the potential to allow mixing of material to be traced between many different regions of the early solar system. We have used independent component analysis to examine the mixing end-members required to produce the compositions observed in the different data sets. The independent component analysis yields results identical to a linear regression for the bulk meteorites. The components identified for hibonite suggest that most of the grains are consistent with binary mixing from one of three highly anomalous nucleosynthetic sources. Comparison of these end-members show that the sources which dominate the variation of compositions in the meteorite parent body forming regions was not present in the region in which the hibonites formed. This suggests that the source which dominates variation in Ti isotope anomalies between the bulk meteorites was not present when the hibonite grains were forming. One explanation is that the bulk meteorite source may not be a primary nucleosynthetic source but was created by mixing two or more of the hibonite sources. Alternatively, the hibonite sources may have been diluted during subsequent nebula processing and are not a dominant solar system signatures.

KW - Astrochemistry

KW - Meteorites, meteors, meteoroids

KW - Methods: statistical

KW - Nuclear reactions

KW - Nucleosynthesis

KW - Abundances

KW - Protoplanetary disks

KW - Supernovae: general

U2 - 10.1088/0004-637X/802/2/80

DO - 10.1088/0004-637X/802/2/80

M3 - Article

VL - 802

JO - Astrophysical Journal

JF - Astrophysical Journal

SN - 0004-637X

IS - 2

ER -

Related by author

  1. Elemental abundances of major elements in the solar wind as measured in Genesis targets and implications on solar wind fractionation

    Heber, V., McKeegan, K., Steele, R. C. J., Jurewicz, A., Rieck, K., Guan, Y., Wieler, R. & Burnett, D. S., 20 Jan 2021, In: Astrophysical Journal. 907, 1, 15.

    Research output: Contribution to journalArticlepeer-review

  2. Nucleosynthetic heterogeneities in meteorites

    Steele, R. C. J., 17 Sep 2020, Reference Module in Earth Systems and Environmental Sciences. Elsevier Inc.

    Research output: Chapter in Book/Report/Conference proceedingChapter

  3. The Stubenberg meteorite—An LL6 chondrite fragmental breccia recovered soon after precise prediction of the strewn field

    Bischoff, A., Barrat, J-A., Bauer, K., Burkhardt, C., Busemann, H., Ebert, S., Gonsior, M., Hakenmüller, J., Haloda, J., Harries, D., Heinlein, D., Hiesinger, H., Hochleitner, R., Hoffmann, V., Kaliwoda, M., Laubenstein, M., Maden, C., Meier, M. M. M., Morlok, A., Pack, A. & 6 others, Ruf, A., Schmitt-Kopplin, P., Schönbächler, M., Steele, R. C. J., Spurný, P. & Wimmer, K., 2 Aug 2017, In: Meteoritics & Planetary Science. 52, 8, p. 1683-1703

    Research output: Contribution to journalArticlepeer-review

  4. The isotope geochemistry of Ni

    Elliott, T. & Steele, R. C. J., 1 Jan 2017, In: Reviews in Mineralogy and Geochemistry. 82, 1, p. 511-542 31 p.

    Research output: Contribution to journalReview articlepeer-review

Related by journal

  1. Astrophysical Journal (Journal)

    Carolin Villforth (Reviewer)

    2011 → …

    Activity: Publication peer-review and editorial work typesPeer review of manuscripts

  2. Astrophysical Journal (Journal)

    Christiane Helling (Reviewer)

    1 Jan 200631 Dec 2017

    Activity: Publication peer-review and editorial work typesPeer review of manuscripts

  3. Astrophysical Journal (Journal)

    Duncan Hendry Mackay (Editor)

    1997 → …

    Activity: Publication peer-review and editorial work typesEditor of research journal

  4. Astrophysical Journal (Journal)

    Alan William Hood (Editor)

    1980 → …

    Activity: Publication peer-review and editorial work typesEditor of research journal

Related by journal

  1. Amplitude modulation of short-timescale hot spot variability

    Biddle, L. I., Llama, J., Cameron, A., Prato, L., Jardine, M. & Johns-Krull, C. M., 14 Jan 2021, In: Astrophysical Journal. 906, 2, 7 p., 113.

    Research output: Contribution to journalArticlepeer-review

  2. Elemental abundances of major elements in the solar wind as measured in Genesis targets and implications on solar wind fractionation

    Heber, V., McKeegan, K., Steele, R. C. J., Jurewicz, A., Rieck, K., Guan, Y., Wieler, R. & Burnett, D. S., 20 Jan 2021, In: Astrophysical Journal. 907, 1, 15.

    Research output: Contribution to journalArticlepeer-review

  3. Space Telescope and Optical Reverberation Mapping Project. IX. Velocity-delay maps for broad emission lines in NGC 5548

    Horne, K., De Rosa, G., Peterson, B. M., Barth, A. J., Ely, J., Fausnaugh, M. M., Kriss, G. A., Pei, L., Bentz, M. C., Cackett, E. M., Edelson, R., Eracleous, M., Goad, M. R., Grier, C. J., Kaastra, J., Kochanek, C. S., Krongold, Y., Mathur, S., Netzer, H., Proga, D. & 135 others, Tejos, N., Vestergaard, M., Villforth, C., Adams, S. M., Anderson, M. D., Arévalo, P., Beatty, T. G., Bennert, V. N., Bigley, A., Bisogni, S., Borman, G. A., Boroson, T. A., Bottorff, M. C., Brandt, W. N., Breeveld, A. A., Brotherton, M., Brown, J. E., Brown, J. S., Canalizo, G., Carini, M. T., Clubb, K. I., Comerford, J. M., Corsini, E. M., Crenshaw, D. M., Croft, S., Croxall, K. V., Dalla Bontà, E., Deason, A. J., Dehghanian, M., De Lorenzo-Cáceres, A., Denney, K. D., Dietrich, M., Done, C., Efimova, N. V., Evans, P. A., Ferland, G. J., Filippenko, A. V., Flatland, K., Fox, O. D., Gardner, E., Gates, E. L., Gehrels, N., Geier, S., Gelbord, J. M., Gonzalez, L., Gorjian, V., Greene, J. E., Grupe, D., Gupta, A., Hall, P. B., Henderson, C. B., Hicks, S., Holmbeck, E., Holoien, T. W-S., Hutchison, T., Im, M., Jensen, J. J., Johnson, C. A., Joner, M. D., Jones, J., Kaspi, S., Kelly, P. L., Kennea, J. A., Kim, M., Kim, S., Kim, S. C., King, A., Klimanov, S. A., Korista, K. T., Lau, M. W., Lee, J. C., Leonard, D. C., Li, M., Lira, P., Lochhaas, C., Ma, Z., MacInnis, F., Malkan, M. A., Manne-Nicholas, E. R., Mauerhan, J. C., McGurk, R., McHardy, I. M., Montuori, C., Morelli, L., Mosquera, A., Mudd, D., Müller–Sánchez, F., Nazarov, S. V., Norris, R. P., Nousek, J. A., Nguyen, M. L., Ochner, P., Okhmat, D. N., Pancoast, A., Papadakis, I., Parks, J. R., Penny, M. T., Pizzella, A., Pogge, R. W., Poleski, R., Pott, J-U., Rafter, S. E., Rix, H-W., Runnoe, J., Saylor, D. A., Schimoia, J. S., Schnülle, K., Scott, B., Sergeev, S. G., Shappee, B. J., Shivvers, I., Siegel, M., Simonian, G. V., Siviero, A., Skielboe, A., Somers, G., Spencer, M., Starkey, D., Stevens, D. J., Sung, H-I., Tayar, J., Treu, T., Turner, C. S., Uttley, P., Van Saders, J., Vican, L., Villanueva, S., Weiss, Y., Woo, J-H., Yan, H., Young, S., Yuk, H., Zheng, W., Zhu, W. & Zu, Y., 1 Feb 2021, In: Astrophysical Journal. 907, 2, 19 p., 76.

    Research output: Contribution to journalArticlepeer-review

  4. The sloan digital sky survey reverberation mapping project: The MBH-host relations at 0.2 ≲ z ≲ 0.6 from reverberation mapping and hubble space telescope imaging

    Li, J. I. H., Shen, Y., Ho, L. C., Brandt, W. N., Bontà, E. D., Fonseca Alvarez, G., Grier, C. J., Hernandez Santisteban, J. V., Homayouni, Y., Horne, K., Peterson, B. M., Schneider, D. P. & Trump, J. R., 13 Jan 2021, In: Astrophysical Journal. 906, 2, 13 p., 103.

    Research output: Contribution to journalArticlepeer-review

  5. Spitzer microlensing parallax reveals two isolated stars in the Galactic bulge

    Zang, W., Shvartzvald, Y., Wang, T., Udalski, A., Lee, C-U., Sumi, T., Skottfelt, J., Li, S-S., Mao, S., Zhu, W., Yee, J. C., Calchi Novati, S., Beichman, C. A., Bryden, G., Carey, S., Gaudi, B. S., Henderson, C. B., Mróz, P., Skowron, J., Poleski, R. & 74 others, Szymański, M. K., Soszyński, I., Pietrukowicz, P., Kozłowski, S., Ulaczyk, K., Rybicki, K. A., Iwanek, P., Bachelet, E., Christie, G., Green, J., Hennerley, S., Maoz, D., Natusch, T., Pogge, R. W., Street, R. A., Tsapras, Y., Albrow, M. D., Chung, S-J., Gould, A., Han, C., Hwang, K-H., Jung, Y. K., Ryu, Y-H., Shin, I-G., Cha, S-M., Kim, D-J., Kim, H-W., Kim, S-L., Lee, D-J., Lee, Y., Park, B-G., Pogge, R. W., Bond, I. A., Abe, F., Barry, R., Bennett, D. P., Bhattacharya, A., Donachie, M., Fukui, A., Hirao, Y., Itow, Y., Kondo, I., Koshimoto, N., Li, M. C. A., Matsubara, Y., Muraki, Y., Miyazaki, S., Nagakane, M., Ranc, C., Rattenbury, N. J., Suematsu, H., Sullivan, D. J., Suzuki, D., Tristram, P. J., Yonehara, A., Dominik, M., Hundertmark, M., Jørgensen, U. G., Rahvar, S., Sajadian, S., Snodgrass, C., Bozza, V., Burgdorf, M. J., Evans, D. F., Figuera Jaimes, R., Fujii, Y. I., Mancini, L., Longa-Peña, P., Helling, C., Peixinho, N., Rabus, M., Southworth, J., Unda-Sanzana, E. & von Essen, C., 1 Mar 2020, In: Astrophysical Journal. 891, 1, 11 p., 3.

    Research output: Contribution to journalArticlepeer-review

ID: 255735815

Top