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Results 1 - 42 of 42

Understanding the early stages of galaxy formation using very metal-poor stars from the Hamburg/ESO survey. (arXiv:2212.08294v1 [astro-ph.GA])
- Virtual Journal - Volume 20, Issue 50 - article #2
- Daniela Carollo, Norbert Christlieb, Patricia B. Tissera, Emanuel Sillero
- http://arxiv.org/abs/2212.08294
Lithium in NGC 2243 and NGC 104. (arXiv:2106.15441v1 [astro-ph.SR])
- Virtual Journal - Volume 19, Issue 27 - article #3
- Misa Aoki, Francesca Primas, Luca Pasquini, Achim Weiss, Maurizio Salaris, Daniela Carollo
- http://arxiv.org/abs/2106.15441
Evidence for the Third Stellar Population in the Milky Way’s Disk
- Virtual Journal - Volume 17, Issue 49 - article #25
- Daniela Carollo, Masashi Chiba, Miho Ishigaki, Ken Freeman, Timothy C. Beers, Young Sun Lee, Patricia Tissera, Chiara Battistini,, Francesca Primas
- The Astrophysical Journal
- http://iopscience.iop.org/0004-637X/887/1/22
Chemical Cartography. I. A Carbonicity Map of the Galactic Halo
- Virtual Journal - Volume 15, Issue 7 - article #21
- Young Sun Lee, Timothy C. Beers, Young Kwang Kim, Vinicius Placco, Jinmi Yoon, Daniela Carollo, Thomas Masseron,, Jaehun Jung
- The Astrophysical Journal
- http://iopscience.iop.org/0004-637X/836/1/91
Chemical Cartography. I. A Carbonicity Map of the Galactic Halo. (arXiv:1702.00195v1 [astro-ph.GA])
- Virtual Journal - Volume 15, Issue 5 - article #5
- Young Sun Lee, Timothy C. Beers, Young Kwang Kim, Vinicius Placco, Jinmi Yoon, Daniela Carollo, Thomas Masseron, Jaehun Jung
- http://arxiv.org/abs/1702.00195
Bright Metal-Poor Stars from the Hamburg/ESO Survey. II. A Chemodynamical Analysis
- Virtual Journal - Volume 15, Issue 3 - article #32
- Timothy C. Beers, Vinicius M. Placco, Daniela Carollo, Silvia Rossi, Young Sun Lee, Anna Frebel, John E. Norris, Sarah Dietz,, Thomas Masseron
- The Astrophysical Journal
- http://iopscience.iop.org/0004-637X/835/1/81
OBSERVATIONAL CONSTRAINTS ON FIRST-STAR NUCLEOSYNTHESIS. I. EVIDENCE FOR MULTIPLE PROGENITORS OF CEMP-NO STARS
- Virtual Journal - Volume 14, Issue 50 - article #21
- Jinmi Yoon, Timothy C. Beers, Vinicius M. Placco, Kaitlin C. Rasmussen, Daniela Carollo, Siyu He, Terese T. Hansen, Ian U. Roederer,, Jeff Zeanah
- The Astrophysical Journal
- http://iopscience.iop.org/0004-637X/833/1/20
Bright Metal-Poor Stars from the Hamburg/ESO Survey. II. A Chemodynamical Analysis. (arXiv:1611.03762v1 [astro-ph.SR])
- Virtual Journal - Volume 14, Issue 47 - article #2
- Timothy C. Beers, Vinicius M. Placco, Daniela Carollo, Silvia Rossi, Anna Frebel, John E. Norris, Sarah Dietz, Thomas Masseron
- http://arxiv.org/abs/1611.03762
The GALAH Survey: Observational Overview and Gaia DR1 companion. (arXiv:1609.02822v1 [astro-ph.IM])
- Virtual Journal - Volume 14, Issue 38 - article #13
- Sarah Martell (UNSW), Sanjib Sharma (USyd), Sven Buder (MPIA), Ly Duong (MPIA), Katharine Schlesinger (RSAA), Jeffrey Simpson (AAO), Karin Lind (MPIA/Uppsala), Melissa Ness (MPIA), Jonathan Marshall (UNSW), Martin Asplund (RSAA), Joss Bland-Hawthorn (USyd), Andrew Casey (IoA), Gayandhi De Silva (AAO), Ken Freeman (RSAA), Janez Kos (USyd), Jane Lin (RSAA), Daniel Zucker (Macquarie), Tomaz Zwitter (Ljubljana), Borja Anguiano (Macquarie), Carlos Bacigalupo (Macquarie), Daniela Carollo (Notre Dame), Luca Casagrande (RSAA), Gary Da Costa (RSAA), Jonathan Horner (USQ), Daniel Huber (USyd), Elaina Hyde (U Western Sydney/AAO), Prajwal Kafle (UWA), Geraint Lewis (USyd), David Nataf (RSAA), Dennis Stello (USyd), Chris Tinney (UNSW), Fred Watson (AAO), Rob Wittenmyer (UNSW)
- http://arxiv.org/abs/1609.02822
The age structure of the Milky Way's halo. (arXiv:1607.08628v1 [astro-ph.GA])
- Virtual Journal - Volume 14, Issue 32 - article #15
- Daniela Carollo, Tim Beers, Vinicius Placco, Rafael Santucci, Pavel Denissenkov, Patricia Tissera, Geoffrey Lentner, Silvia Rossi, Young Sun Lee, Jason Tumlinson
- http://arxiv.org/abs/1607.08628
Observational Constraints on First-Star Nucleosynthesis. I. Evidence for Multiple Progenitors of CEMP-no Stars. (arXiv:1607.06336v1 [astro-ph.SR])
- Virtual Journal - Volume 14, Issue 30 - article #10
- Jinmi Yoon, Timothy C. Beers, Vinicius M. Placco, Kaitlin C. Rasmussen, Daniela Carollo, Siyu He, Terese T. Hansen, Ian U. Roederer
- http://arxiv.org/abs/1607.06336
Population Studies. XIII. A New Analysis of the Bidelman-MacConnell "Weak-metal" Stars—Confirmation of Metal-poor Stars in the Thick Disk of the Galaxy
- Virtual Journal - Volume 12, Issue 23 - article #134
- Timothy C. Beers, John E. Norris, Vinicius M. Placco, Young Sun Lee, Silvia Rossi, Daniela Carollo, and Thomas Masseron
- The Astrophysical Journal - Volume: 794, Issue: 1
- View article PDF (871 KB)
Population Studies. XIII. A New Analysis of the Bidelman-MacConnell "Weak-Metal" Stars - Confirmation of Metal-Poor Stars in the Thick Disk of the Galaxy
- Virtual Journal - Volume 12, Issue 21 - article #24
- Timothy C. Beers, John E. Norris, Vinicius M. Placco, Young Sun Lee, Silvia Rossi, Daniela Carollo, Thomas Masseron
- arXiv.org - Astrophysics - Volume: 2014, Issue: 15 Aug
- arXiv:1408.3165 [pdf, ps, other]
Carbon-enhanced Metal-poor Stars: CEMP-s and CEMP-no Subclasses in the Halo System of the Milky Way
- Virtual Journal - Volume 12, Issue 21 - article #138
- Daniela Carollo, Ken Freeman, Timothy C. Beers, Vinicius M. Placco, Jason Tumlinson, and Sarah L. Martell
- The Astrophysical Journal - Volume: 788, Issue: 2
- View article PDF (774 KB)
Possible Evidence for Metal Accretion onto the Surfaces of Metal-poor Main-sequence Stars
- Virtual Journal - Volume 12, Issue 17 - article #46
- Kohei Hattori, Yuzuru Yoshii, Timothy C. Beers, Daniela Carollo, and Young Sun Lee
- The Astrophysical Journal - Volume: 784, Issue: 2
- View article PDF (1.35 MB)
Stellar haloes in Milky Way mass galaxies: from the inner to the outer haloes
- Virtual Journal - Volume 12, Issue 12 - article #26
- Patricia B. Tissera, Timothy C. Beers, Daniela Carollo, and Cecilia Scannapieco
- Monthly Notices of the Royal Astronomical Society - Volume: 439, Issue: 3
- Abstract Full Text (HTML) Full Text (PDF)
Possible Evidence for Metal Accretion onto the Surfaces of Metal-Poor Main-Sequence Stars
- Virtual Journal - Volume 12, Issue 8 - article #6
- Kohei Hattori, Yuzuru Yoshii, Timothy C. Beers, Daniela Carollo, Young Sun Lee
- arXiv.org - Astrophysics - Volume: 2014, Issue: 21 Feb
- arXiv:1402.4251 [pdf, ps, other]
Carbon-Enhanced Metal-Poor Stars: CEMP-s and CEMP-no Sub-Classes in the Halo System of the Milky Way
- Virtual Journal - Volume 12, Issue 2 - article #5
- Daniela Carollo, Ken Freeman, Timothy Beers, Vinicius Placco, Jason Tumlinson, Sarah Martell
- arXiv.org - Astrophysics - Volume: 2014, Issue: 10 Jan
- arXiv:1401.0574 [pdf, ps, other]
Carbon-enhanced Metal-poor Stars in SDSS/SEGUE. I. Carbon Abundance Estimation and Frequency of CEMP Stars
- Virtual Journal - Volume 11, Issue 42 - article #2
- Young Sun Lee, Timothy C. Beers, Thomas Masseron, Bertrand Plez, Constance M. Rockosi, Jennifer Sobeck, Brian Yanny, Sara Lucatello, Thirupathi Sivarani, Vinicius M. Placco, Daniela Carollo
- arXiv.org - Astrophysics - Volume: 2013, Issue: 18 Oct
- arXiv:1310.3276 [pdf, ps, other]
Chemical Analysis of the Ninth Magnitude Carbon-enhanced Metal-poor Star BD+44°493
- Virtual Journal - Volume 11, Issue 36 - article #29
- Hiroko Ito, Wako Aoki, Timothy C. Beers, Nozomu Tominaga, Satoshi Honda, and Daniela Carollo
- The Astrophysical Journal - Volume: 773, Issue: 1
- Abstract References Full text PDF (1.44 MB) Enhanced article HTML
CN Anomalies in the Halo System and the Origin of Globular Clusters in the Milky Way
- Virtual Journal - Volume 11, Issue 20 - article #30
- Daniela Carollo, Sarah L. Martell, Timothy C. Beers, and Ken C. Freeman
- The Astrophysical Journal - Volume: 769, Issue: 2
- Abstract References Full text PDF (2.51 MB) Enhanced article HTML
CN Anomalies in the Halo System and the Origin of Globular Clusters in the Milky Way
- Virtual Journal - Volume 11, Issue 12 - article #3
- Daniela Carollo, Sarah Martell, Timothy Beers, Ken Freeman
- arXiv.org - Astrophysics - Volume: 2013, Issue: 22 Mar
- arXiv:1303.4168 [pdf, ps, other]
The Stellar Metallicity Distribution Function of the Galactic Halo from SDSS Photometry
- Virtual Journal - Volume 11, Issue 3 - article #53
- Deokkeun An, Timothy C. Beers, Jennifer A. Johnson, Marc H. Pinsonneault, Young Sun Lee, Jo Bovy, Å½eljko IveziÄ, Daniela Carollo, and Matthew Newby
- The Astrophysical Journal - Volume: 763, Issue: 1
- Abstract References Full text PDF (1.64 MB) Enhanced article HTML
Very Metal-Poor Outer-Halo Stars with Round Orbits
- Virtual Journal - Volume 10, Issue 51 - article #17
- Kohei Hattori, Yuzuru Yoshii, Timothy C. Beers, Daniela Carollo, Young Sun Lee
- arXiv.org - Astrophysics - Volume: 2012, Issue: 21 Dec
- arXiv:1212.4296 [pdf, ps, other]
The Stellar Metallicity Distribution Function of the Galactic Halo from SDSS Photometry
- Virtual Journal - Volume 10, Issue 49 - article #12
- Deokkeun An, Timothy C. Beers, Jennifer A. Johnson, Marc H. Pinsonneault, Young Sun Lee, Jo Bovy, Željko Ivezić, Daniela Carollo, Matthew Newby
- arXiv.org - Astrophysics - Volume: 2012, Issue: 7 Dec
- arXiv:1211.7073 [pdf, ps, other]
High-Resolution Spectroscopy of Extremely Metal-Poor Stars from SDSS/SEGUE: I. Atmospheric Parameters and Chemical Compositions
- Virtual Journal - Volume 10, Issue 41 - article #3
- Wako Aoki, Timothy C. Beers, Young Sun Lee, Satoshi Honda, Hiroko Ito, Masahide Takada-Hidai, Anna Frebel, Takuma Suda, Masatuki Y. Fujimoto, Daniela Carollo, Thirupathi Sivarani
- arXiv.org - Astrophysics - Volume: 2012, Issue: 12 Oct
- arXiv:1210.1946 [pdf, ps, other]
The Case for the Dual Halo of the Milky Way
- Virtual Journal - Volume 10, Issue 15 - article #42
- Timothy C. Beers, Daniela Carollo, Å½eljko IveziÄ, Deokkeun An, Masashi Chiba, John E. Norris, Ken C. Freeman, Young Sun Lee, Jeffrey A. Munn, Paola Re Fiorentin, Thirupathi Sivarani, Ronald Wilhelm, Brian Yanny, and Donald G. York
- The Astrophysical Journal - Volume: 746, Issue: 1
- Abstract References Cited by Full text PDF (15.69 MB) View as HTML
Carbon-enhanced Metal-poor Stars in the Inner and Outer Halo Components of the Milky Way
- Virtual Journal - Volume 10, Issue 2 - article #33
- Daniela Carollo, Timothy C. Beers, Jo Bovy, Thirupathi Sivarani, John E. Norris, Ken C. Freeman, Wako Aoki, Young Sun Lee and Catherine R. Kennedy
- The Astrophysical Journal - Volume: 744, Issue: 2
- Abstract References Full text PDF (31.22 MB) View as HTML
The Case for the Dual Halo of the Milky Way
- Virtual Journal - Volume 9, Issue 15 - article #8
- Timothy C. Beers (1), Daniela Carollo (2), Zeljko Ivezic (3), Deokkeun An (4), Masashi Chiba (5), John E. Norris (2), Ken C. Freeman (2), Young Sun Lee (1), Jeffrey A. Munn (6), Paola Re Fiorentin (7), Thirupathi Sivarani (8), Ronald Wilhelm (9), Brian Yanny (10), Donald G. York (11) ((1) Michigan State Univ., (2) Australian National Univ., (3) Univ. of Washington, (4) Ehwa Womans Univ., Korea, (5) Tohoku Univ., Japan, (6) USNO, (7) Torino Observatory, Italy, (8) Indian Institute of Astrophysics, Bangalore, (9) Univ. of Kentucky, (10) FermiLab, (11) Univ. of Chicago)
- arXiv.org - Astrophysics - Volume: 2011, Issue: 15 Apr
- arXiv:1104.2513 [pdf, other]
Extreme Enhancements of r-process Elements in the Cool Metal-poor Main-sequence Star SDSS J2357–0052
- Virtual Journal - Volume 8, Issue 43 - article #37
- Wako Aoki, Timothy C. Beers, Satoshi Honda and Daniela Carollo
- The Astrophysical Journal Letters - Volume: 723, Issue: 2
- Abstract References Full text PDF (276 KB) View as HTML
Extreme Enhancements of r-process Elements in the Cool Metal-Poor Main-Sequence Star SDSS J2357-0052
- Virtual Journal - Volume 8, Issue 41 - article #7
- Wako Aoki, Timothy C. Beer, Satoshi Honda, Daniela Carollo
- arXiv.org - Astrophysics - Volume: 2010, Issue: 8 Oct
- arXiv:1010.0415 [pdf, ps, other]
Metallicity Mapping with gri Photometry: The Virgo Overdensity and the Halos of the Galaxy
- Virtual Journal - Volume 7, Issue 44 - article #10
- Timothy C. Beers (1,2), Deokkeun An (3), Jennifer A. Johnson (4), Marc H. Pinsonneault (4), Donald M. Terndrup (4), Franck Delahaye (5), Young Sun Lee (1,2), Thomas Masseron (4), Daniela Carollo (6,7), Brian Yanny (8) ((1) Michigan State Univ., (2) Joint Institute for Nuclear Astrophysics, (3) IPAC, Caltech, (4) Ohio State Univ., (5) CEA-Saclay, France, (6) Australian National Univ., (7) INAF, Torino, (8) Fermilab)
- arXiv.org - Astrophysics - Volume: 2009, Issue: 30 Oct
- arXiv:0910.4731 [ps, pdf, other]
Structure and Kinematics of the Stellar Halos and Thick Disks of the Milky Way Based on Calibration Stars from SDSS DR7
- Virtual Journal - Volume 7, Issue 38 - article #14
- Daniela Carollo (1), Timothy C. Beers (2), Masashi Chiba (3), John E. Norris (1), Ken C. Freeman (1), Young Sun Lee (2), Zeljko Ivezic (4), Constance M. Rockosi (5), Brian Yanny (6) ((1) RSAA, ANU, Australia, (2) Michigan State Univ., (3) Tohoku Univ., Japan, (4) Univ. of Washington, (5) UC Santa Cruz, (6) FermiLab)
- arXiv.org - Astrophysics - Volume: 2009, Issue: 18 Sep
- arXiv:0909.3019 [pdf, other]
Galactic archaeology: Overcoming great barriers
- Virtual Journal - Volume 7, Issue 27 - article #36
- Timothy C. Beers & Daniela Carollo
- Nature-Physics - Volume: 5, Issue: 7
- Full Text - Galactic archaeologyOvercoming great barriers | PDF (516 KB) - Galactic archaeologyOvercoming great barriersSubject Category: Astrophysics
Lithium Abundances of Extremely Metal-Poor Turnoff Stars
- Virtual Journal - Volume 7, Issue 24 - article #26
- Wako Aoki, Paul S. Barklem, Timothy C. Beers, Norbert Christlieb, Susumu Inoue, Ana E. García Pérez, John E. Norris, and Daniela Carollo
- The Astrophysical Journal - Volume: 698, Issue: 2
- Abstract | References
Lithium Abundances of Extremely Metal-Poor Turn-off Stars
- Virtual Journal - Volume 7, Issue 15 - article #4
- Wako Aoki, Paul S. Barklem, Timothy C. Beers, Norbert Christlieb, Susumu Inoue, Ana E. Garcia Perez, John E. Norris, Daniela Carollo
- arXiv.org - Astrophysics - Volume: 2009, Issue: 10 Apr
- arXiv:0904.1448 [ps, pdf, other]
Carbon-Enhanced Metal-Poor Stars. III. Main-Sequence Turnoff Stars from the SDSS SEGUE Sample
- Virtual Journal - Volume 6, Issue 18 - article #27
- Wako Aoki, Timothy C. Beers, Thirupathi Sivarani, Brian Marsteller, Young Sun Lee, Satoshi Honda, John E. Norris, Sean G. Ryan, and Daniela Carollo
- The Astrophysical Journal - Volume: 678, Issue: 2
- Abstract-Full Text-PDF Version (1131 kB)
Searches for the Most Metal-Poor Candidates from SDSS and SEGUE
- Virtual Journal - Volume 6, Issue 16 - article #12
- Timothy C. Beers (1), Daniela Carollo (2) ((1) Dept. of Physics & Astronomy and JINA, Michigan State University, (2) Osservatorio Astronomico di Torino, Italy, and JINA, Michigan State University)
- arXiv.org - Astrophysics - Volume: 2008, Issue: 17 Apr
- arXiv:0804.1993 [ps, pdf, other]
The Dichotomy of the Halo of the Milky Way
- Virtual Journal - Volume 6, Issue 16 - article #15
- Daniela Carollo (1), Timothy C. Beers (2) ((1) Research School of Astronomy and Astrophysics, Mount Stromlo Observatory, The Australian National University, Australia, and INAF, Osservatorio Astronomico di Torino, Italy, (2) Department of Physics and Astronomy, and JINA: Joint Institute for Nuclear Astrophysics, Michigan State University)
- arXiv.org - Astrophysics - Volume: 2008, Issue: 17 Apr
- arXiv:0804.2183 [pdf, other]
Carbon-Enhanced Metal-Poor Stars. III. Main-Sequence Turn-Off Stars from the SDSS/SEGUE Sample
- Virtual Journal - Volume 6, Issue 5 - article #2
- Wako Aoki, Timothy C. Beers, Thirupathi Sivarani, Brian Marsteller, Young Sun Lee, Satoshi Honda, John E. Norris, Sean G. Ryan, Daniela Carollo
- arXiv.org - Astrophysics - Volume: 2008, Issue: 31 Jan
- arXiv:0801.4187 [ps, pdf, other]
Two stellar components in the halo of the Milky Way
- Virtual Journal - Volume 6, Issue 2 - article #41
- Daniela Carollo, Timothy C. Beers, Young Sun Lee, Masashi Chiba, John E. Norris, Ronald Wilhelm, Thirupathi Sivarani, Brian Marsteller, Jeffrey A. Munn, Coryn A. L. Bailer-Jones, Paola Re Fiorentin &, Donald G. York
- Nature - Volume: 451, Issue: 7175
- Full Text | PDF (69K)
Two stellar components in the halo of the Milky Way
- Virtual Journal - Volume 5, Issue 50 - article #17
- Daniela Carollo, Timothy C. Beers, Young Sun Lee, Masashi Chiba, John E. Norris, Ronald Wilhelm, Thirupathi Sivarani, Brian Marsteller, Jeffrey A. Munn, Coryn A. L. Bailer-Jones, Paola Re Fiorentin &, Donald G. York
- Nature - Volume: 450, Issue: 7172
- Abstract | Full Text | PDF (497K) | Supplementary information

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