Zobrazeno 1 - 10
of 55
pro vyhledávání: '"M. De Silva"'
Autor:
Rok Vogrinčič, Janez Kos, Tomaž Zwitter, Gregor Traven, Kevin L Beeson, Klemen Čotar, Ulisse Munari, Sven Buder, Sarah L Martell, Geraint F Lewis, Gayandhi M De Silva, Michael R Hayden, Joss Bland-Hawthorn, Valentina D’Orazi
We use more than 872,000 mid-to-high resolution (R $\sim$ 20,000) spectra of stars from the GALAH survey to discern the spectra of diffuse interstellar bands (DIBs). We use four windows with the wavelength range from 4718 to 4903, 5649 to 5873, 6481
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::090d52c8c9f0482fe1e7ea1ad7504f97
http://arxiv.org/abs/2303.14016
http://arxiv.org/abs/2303.14016
Autor:
Daniel B. Zucker, Gayandhi M. De Silva, Joss Bland-Hawthorn, Prajwal R. Kafle, Karin Lind, Thor Tepper-García, Robert A. Wittenmyer, Sarah L. Martell, Tomaž Zwitter, Lorenzo Spina, Geraint F. Lewis, Martin Asplund, Katharine J. Schlesinger, Thomas Kallinger, Purmortal Wang, Michael R. Hayden, Joel C. Zinn, Jeffrey D. Simpson, Janez Kos, Sven Buder, Jane Lin, Shourya Khanna, Valentina D'Orazi, Dennis Stello, Sanjib Sharma, Boquan Chen, Kenneth C. Freeman, Klemen Čotar
Publikováno v:
Monthly Notices of the Royal Astronomical Society
Sharma, S, Hayden, M R, Bland-Hawthorn, J, Stello, D, Buder, S, Zinn, J C, Spina, L, Kallinger, T, Asplund, M, De Silva, G M, D'Orazi, V, Freeman, K C, Kos, J, Lewis, G F, Lin, J, Lind, K, Martell, S L, Schlesinger, K J, Simpson, J D, Zucker, D B, Zwitter, T, Chen, B, Cotar, K, Kafle, P R, Khanna, S, Tepper-Garcia, T, Wang, P & Wittenmyer, R A 2022, ' The GALAH Survey : Dependence of elemental abundances on age and metallicity for stars in the Galactic disc ', Monthly Notices of the Royal Astronomical Society, vol. 510, no. 1, pp. 734-752 . https://doi.org/10.1093/mnras/stab3341
Monthly Notices of the Royal Astronomical Society, 510(1), 734-752. Oxford University Press
Sharma, S, Hayden, M R, Bland-Hawthorn, J, Stello, D, Buder, S, Zinn, J C, Spina, L, Kallinger, T, Asplund, M, De Silva, G M, D'Orazi, V, Freeman, K C, Kos, J, Lewis, G F, Lin, J, Lind, K, Martell, S L, Schlesinger, K J, Simpson, J D, Zucker, D B, Zwitter, T, Chen, B, Cotar, K, Kafle, P R, Khanna, S, Tepper-Garcia, T, Wang, P & Wittenmyer, R A 2022, ' The GALAH Survey : Dependence of elemental abundances on age and metallicity for stars in the Galactic disc ', Monthly Notices of the Royal Astronomical Society, vol. 510, no. 1, pp. 734-752 . https://doi.org/10.1093/mnras/stab3341
Monthly Notices of the Royal Astronomical Society, 510(1), 734-752. Oxford University Press
Using data from the GALAH survey, we explore the dependence of elemental abundances on stellar age and metallicity among Galactic disc stars. We find that the abundance of most elements can be predicted from age and [Fe/H] with an intrinsic scatter o
Autor:
Daniel B. Zucker, Michael R. Hayden, Karin Lind, Thor Tepper-García, Thomas Nordlander, Kenneth C. Freeman, Geraint F. Lewis, Tomaž Zwitter, Katharine J. Schlesinger, Gayandhi M. De Silva, Dennis Stello, Jeffrey D. Simpson, Joss Bland-Hawthorn, Andrew R. Casey, Janez Kos, Sarah L. Martell, Gary S. Da Costa, Sanjib Sharma, Yuan-Sen Ting, Klemen Čotar, Rosemary F. G. Wyse, Sven Buder, Jonathan Horner, Martin Asplund, Valentina D'Orazi
Publikováno v:
Monthly Notices of the Royal Astronomical Society
The ESA Gaia astrometric mission has enabled the remarkable discovery that a large fraction of the stars near the Solar neighbourhood appear to be debris from a single in-falling system, the so-called Gaia-Enceladus-Sausage (GSE). One exciting featur
Publikováno v:
Howell, M, Campbell, S W, Stello, D & De Silva, G M 2022, ' Integrated mass-loss of evolved stars in M4 using asteroseismology ', Monthly Notices of the Royal Astronomical Society, vol. 515, no. 3, pp. 3184-3198 . https://doi.org/10.1093/mnras/stac1918
Mass loss remains a major uncertainty in stellar modelling. In low-mass stars, mass loss is most significant on the red giant branch (RGB), and will impact the star's evolutionary path and final stellar remnant. Directly measuring the mass difference
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::4a6c359a7d261d35fc3a021a18272342
http://arxiv.org/abs/2207.02406
http://arxiv.org/abs/2207.02406
Autor:
Lara R. Cullinane, A. K. Vivas, E. Balbinot, Vasily Belokurov, Daniel B. Zucker, Sergey E. Koposov, Jeffrey D. Simpson, Sanjib Sharma, Alasdair Mackey, Denis Erkal, G. M. De Silva, Douglas L. Tucker, Risa H. Wechsler, J. D. Simon, Keith Bechtol, Kyler Kuehn, Alexander P. Ji, Geraint F. Lewis, Alex Drlica-Wagner, Brian Yanny, Marla Geha, Joss Bland-Hawthorn, Andrew B. Pace, S. Allam, Nora Shipp, G. S. Da Costa, Tenglin Li, Andrew R. Casey, Jeremy Mould, Zhen Wan, Yao-Yuan Mao, Sarah L. Martell
Publikováno v:
Li, T S, Koposov, S E, Zucker, D B, Lewis, G F, Kuehn, K, Simpson, J D, Ji, A P, Shipp, N, Mao, Y-Y, Geha, M, Pace, A B, Mackey, A D, Allam, S, Tucker, D L, Da Costa, G S, Erkal, D, Simon, J D, Mould, J R, Martell, S L, Wan, Z, De Silva, G M, Bechtol, K, Balbinot, E, Belokurov, V, Bland-Hawthorn, J, Casey, A R, Cullinane, L, Drlica-Wagner, A, Sharma, S, Vivas, A K, Wechsler, R H & Yanny, B 2019, ' The southern stellar stream spectroscopic survey (S5): Overview, target selection, data reduction, validation, and early science ', Monthly Notices of the Royal Astronomical Society, vol. 490, no. 3, pp. 3508-3531 . https://doi.org/10.1093/mnras/stz2731
Monthly Notices of the Royal Astronomical Society, 490, 3508-3531. Oxford University Press
Monthly Notices of the Royal Astronomical Society, 490, 3508-3531. Oxford University Press
We introduce the Southern Stellar Stream Spectroscopy Survey (${S}^5$), an on-going program to map the kinematics and chemistry of stellar streams in the Southern Hemisphere. The initial focus of ${S}^5$ has been spectroscopic observations of recentl
Autor:
James Esdaile, Valentina D'Orazi, Sanjib Sharma, Tomaz Zwitter, Joel C. Zinn, Shourya Khanna, Jonathan Horner, Marc Hon, Thomas Nordlander, Kenneth C. Freeman, Janez Kos, Yuan-Sen Ting, Jane Lin, Geraint F. Lewis, Michael R. Hayden, Jeffrey D. Simpson, Sarah L. Martell, Boquan Chen, Gayandhi M. De Silva, David M. Nataf, Rosemary F. G. Wyse, Mohd Hafiz Mohd Saadon, Thomas Kallinger, Daniel Huber, Martin Asplund, Daniel B. Zucker, Klemen Čotar, Karin Lind, Dennis Stello, Gregor Traven, Sven Buder, Prajwal R. Kafle, Timothy R. Bedding, Robert A. Wittenmyer, Joss Bland-Hawthorn, Tanda Li, Duncan J. Wright
Publikováno v:
Sharma, S, Stello, D, Bland-Hawthorn, J, Hayden, M R, Zinn, J C, Kallinger, T, Hon, M, Asplund, M, Buder, S, de Silva, G M, D'Orazi, V, Freeman, K, Kos, J, Lewis, G F, Lin, J, Lind, K, Martell, S, Simpson, J D, Wittenmyer, R A, Zucker, D B, Zwitter, T, Bedding, T R, Chen, B, Cotar, K, Esdaile, J, Horner, J, Huber, D, Kafle, P R, Khanna, S, Li, T, Ting, Y S, Nataf, D M, Nordlander, T, Saadon, M H M, Traven, G, Wright, D & Wyse, R F G 2019, ' The K2-HERMES survey : Age and metallicity of the thick disc ', Monthly Notices of the Royal Astronomical Society, vol. 490, no. 4, pp. 5335-5352 . https://doi.org/10.1093/mnras/stz2861
Asteroseismology is a promising tool to study Galactic structure and evolution because it can probe the ages of stars. Earlier attempts comparing seismic data from the {\it Kepler} satellite with predictions from Galaxy models found that the models p
Autor:
Jeffrey D. Simpson, Geraint F. Lewis, Zhen Wan, Eduardo Balbinot, Daniel B. Zucker, Prajwal R. Kafle, Gayandhi M. De Silva, Nora Shipp, Dougal Mackey, Alexander P. Ji, Joss Bland-Hawthorn, Sanjib Sharma, Andrew R. Casey, Andrew B. Pace, Ting S. Li, Sarah L. Martell, Kyler Kuehn, Jeremy Mould, Sergey E. Koposov, Denis Erkal, Gary S. Da Costa
Publikováno v:
Nature, 583(7818), 768-770. Nature Publishing Group
Wan, Z, Lewis, G F, Li, T S, Simpson, J D, Martell, S L, Zucker, D B, Mould, J R, Erkal, D, Pace, A B, Mackey, D, Ji, A P, Koposov, S E, Kuehn, K, Shipp, N, Balbinot, E, Bland-Hawthorn, J, Casey, A R, Costa, G S D, Kafle, P, Sharma, S & Silva, G M D 2020, ' The tidal remnant of an unusually metal-poor globular cluster ', Nature, pp. 768-770 . https://doi.org/10.1038/s41586-020-2483-6
Wan, Z, Lewis, G F, Li, T S, Simpson, J D, Martell, S L, Zucker, D B, Mould, J R, Erkal, D, Pace, A B, Mackey, D, Ji, A P, Koposov, S E, Kuehn, K, Shipp, N, Balbinot, E, Bland-Hawthorn, J, Casey, A R, Costa, G S D, Kafle, P, Sharma, S & Silva, G M D 2020, ' The tidal remnant of an unusually metal-poor globular cluster ', Nature, pp. 768-770 . https://doi.org/10.1038/s41586-020-2483-6
Globular clusters are some of the oldest bound stellar structures observed in the Universe. They are ubiquitous in large galaxies and are believed to trace intense star formation events and the hierarchical build-up of structure. Observations of glob
Autor:
Prajwal R. Kafle, Sanjib Sharma, Joss Bland-Hawthorn, Geraint F. Lewis, Yuan-Sen Ting, Gary S. Da Costa, Jeffrey D. Simpson, Katharine J. Schlesinger, Jonathan Horner, Daniel B. Zucker, David M. Nataf, Thomas Nordlander, Kenneth C. Freeman, Sarah L. Martell, Ly Duong, Martin Asplund, Gayandhi M. De Silva, Jane Lin, Andrew R. Casey, Melissa Ness, Janez Kos, Tomaž Zwitter, Klemen Čotar, Sven Buder, Karin Lind, P. L. Cottrell, Valentina D'Orazi
Publikováno v:
Monthly Notices of the Royal Astronomical Society
We present a study using the second data release of the GALAH survey of stellar parameters and elemental abundances of 15 pairs of stars identified by Oh et al 2017. They identified these pairs as potentially co-moving pairs using proper motions and
Autor:
Geraint F. Lewis, Karin Lind, Daniel B. Zucker, Neige Frankel, Jeffrey D. Simpson, Joss Bland-Hawthorn, Thor Tepper-García, Amanda I. Karakas, Tristan Cantat-Gaudin, Sanjib Sharma, J. Lin, Michael R. Hayden, Luca Casagrande, P. L. Cottrell, Janez Kos, Yuan-Sen Ting, Lorenzo Spina, G. M. De Silva, V. D'Orazi, M. Baratella, Tomaž Zwitter, Katharine J. Schlesinger, Meridith Joyce, M. B. Asplund, Klemen Čotar, Thomas Nordlander, Kenneth C. Freeman, Sarah L. Martell, Sven Buder, Dennis Stello, Andrew R. Casey
Publikováno v:
Monthly Notices of the Royal Astronomical Society
Spina, L., et al.
Open clusters are unique tracers of the history of our own Galaxy's disc. According to our membership analysis based on Gaia astrometry, out of the 226 potential clusters falling in the footprint of the GALactic Archaeology wit
Open clusters are unique tracers of the history of our own Galaxy's disc. According to our membership analysis based on Gaia astrometry, out of the 226 potential clusters falling in the footprint of the GALactic Archaeology wit
Autor:
Sven Buder, Martin Asplund, Yuan-Sen Ting, Jonathan Horner, Janez Kos, Michael R. Hayden, Katharine J. Schlesinger, Geraint F. Lewis, Joss Bland-Hawthorn, Tomaž Zwitter, Jeffrey D. Simpson, Valentina D'Orazi, Sanjib Sharma, Daniel B. Zucker, Karin Lind, Jane Lin, Thomas Nordlander, Kenneth C. Freeman, Gayandhi M. De Silva, Sarah L. Martell, Rosemary F. G. Wyse, Andrew R. Casey, Dennis Stello
Publikováno v:
The Astrophysical Journal Letters
The results from the ESA Gaia astrometric mission and deep photometric surveys have revolutionized our knowledge of the Milky Way. There are many ongoing efforts to search these data for stellar substructure to find evidence of individual accretion e
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::cff6efdf0d52a3fc3a509fa6fb741f5e