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Date: 2013
Language: eng
Resource Type: journal article
Identifier: http://hdl.handle.net/1959.14/274613
Description: We describe a method for the determination of stellar [C/Fe] abundance ratios using low-resolution (R = 2000) stellar spectra from the Sloan Digital Sky Survey (SDSS) and its Galactic sub-survey, the ... More
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Reviewed: Reviewed
Date: 2013
Language: eng
Resource Type: journal article
Identifier: http://hdl.handle.net/1959.14/263099
Description: We present detailed chemical abundances for the bright carbon-enhanced metal-poor (CEMP) star BD+44°493, previously reported on by Ito et al. Our measurements confirm that BD+44°493 is an extremely me ... More
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Reviewed: Reviewed
Date: 2013
Language: eng
Resource Type: journal article
Identifier: http://hdl.handle.net/1959.14/221102
Description: We explore the kinematics and orbital properties of a sample of red giants in the halo system of the Milky Way that are thought to have formed in globular clusters based on their anomalously strong UV ... More
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Date: 2013
Language: eng
Resource Type: journal article
Identifier: http://hdl.handle.net/1959.14/263170
Description: Observed chemical (anti)correlations in proton-capture elements among globular cluster stars are presently recognized as the signature of self-enrichment from now extinct, previous generations of star ... More
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Date: 2013
Language: eng
Resource Type: journal article
Identifier: http://hdl.handle.net/1959.14/271448
Description: We present the results of the analysis of high-resolution spectra obtained with UVES-FLAMES at the Very Large Telescope for six red giant branch stars in the outer-halo metal-poor ([Fe/H] I = -1.98 an ... More
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Date: 2013
Language: eng
Resource Type: journal article
Identifier: http://hdl.handle.net/1959.14/263275
Description: Two independent studies recently uncovered two distinct populations among giants in the distant, massive globular cluster (GC) NGC 2419. One of these populations has normal magnesium (Mg) and potassiu ... More
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Reviewed: Reviewed
Date: 2013
Language: eng
Resource Type: journal article
Identifier: http://hdl.handle.net/1959.14/296204
Description: The R Coronae Borealis (RCB) stars are hydrogen-deficient, variable stars that are most likely the result of He-CO WD mergers. They display extremely low oxygen isotopic ratios, ¹⁶O/¹⁸O ≃ 1-10, ¹²C/¹³ ... More
Reviewed: Reviewed
Date: 2013
Language: eng
Resource Type: journal article
Identifier: http://hdl.handle.net/1959.14/274690
Description: Large star-to-star variations of the abundances of proton-capture elements, such as Na and O, in globular clusters (GCs) are interpreted as the effect of internal pollution resulting from the presence ... More
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Reviewed: Reviewed
Date: 2013
Language: eng
Resource Type: journal article
Identifier: http://hdl.handle.net/1959.14/277433
Description: We present the stellar atmospheric parameters (effective temperature, surface gravity, overall metallicity), radial velocities, individual abundances, and distances determined for 425,561 stars, which ... More
Reviewed: Reviewed
Date: 2012
Language: eng
Resource Type: journal article
Identifier: http://hdl.handle.net/1959.14/212788
Description: Carbon-enhanced metal-poor (CEMP) stars in the halo components of the Milky Way are explored, based on accurate determinations of the carbon-to-iron ([C/Fe]) abundance ratios and kinematic quantities ... More
Reviewed: Reviewed
Date: 2012
Language: eng
Resource Type: journal article
Identifier: http://hdl.handle.net/1959.14/175965
Description: We present aluminum, magnesium, and silicon abundances in the metal-poor globular cluster NGC6752 for a sample of more than 130 red giants with homogeneous oxygen and sodium abundances. We find that [ ... More
Reviewed: Reviewed
Date: 2012
Language: eng
Resource Type: journal article
Identifier: http://hdl.handle.net/1959.14/296314
Description: A leading formation scenario for R Coronae Borealis (RCB) stars invokes the merger of degenerate He and CO white dwarfs (WDs) in a binary. The observed ratio of ¹⁶O/¹⁸O for RCB stars is in the range o ... More
Reviewed: Reviewed
Date: 2012
Language: eng
Resource Type: journal article
Identifier: http://hdl.handle.net/1959.14/205052
Description: We present stellar parameters and abundances of 11 elements (Li, Na, Mg, Al, Si, Ca, Ti, Cr, Fe, Ni and Zn) of 13 F6-K2 main-sequence stars in the young groups AB Doradus, Carina Near and Ursa Major. ... More
Reviewed: Reviewed
Date: 2012
Language: eng
Resource Type: journal article
Identifier: http://hdl.handle.net/1959.14/299637
Description: Erratum to this article published in A&A 547, C2 (2012), doi: http://dx.doi.org/10.1051/0004-6361/201118491e. The chemical composition of horizontal branch (HB) stars might help to clarify the formati ... More
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Authors: Saito, R. K | Hempel, M | Hodgkin, S. T | Stead, J | Stephens, A. W | Tamura, M | Tappert, C | Thompson, M. A | Valenti, E | Vanzi, L | Walton, N. A | Weidmann, W | Zijlstra, A | Lewis, J. R | Cross, N | Ivanov, V. D | Kerins, E | Emerson, J. P | Soto, M | Amôres, E. B | Gurovich, S | Dékány, I | Minniti, D | Angeloni, R | Beamin, J. C | Catelan, M | Padilla, N | Zoccali, M | Pietrukowicz, P | Moni Bidin, C | Mauro, F | Geisler, D | Folkes, S. L | Lucas, P. W | Sale, S. E | Borissova, J | Kurtev, R | Ahumada, A. V | Alonso, M. V | Adamson, A | Arias, J. I | Bandyopadhyay, R. M | Barbá, R. H | Barbuy, B | Rejkuba, M | Baume, G. L | Bedin, L. R | Bellini, A | Benjamin, R | Bica, E | Bonatto, C | Bronfman, L | Carraro, G | Chene, A. N | Clariá, J. J | Toledo, I | Clarke, J. R. A | Contreras, C | Corvillón, A | de Grijs, R | Dias, B | Drew, J. E | Fariña, C | Feinstein, C | Fernández-Lajús, E | Gamen, R. C | Gonzalez, O. A | Gieren, W | Goldman, B | González-Fernández, C | Grand, R. J. J | Gunthardt, G | Hambly, N. C | Hanson, M. M | Helminiak, K. G | Hoare, M. G | Huckvale, L | Alonso-García, J | Jordán, A | Kinemuchi, K | Longmore, A | López-Corredoira, M | MacCarone, T | Majaess, D | Martín, E. L | Masetti, N | Mennickent, R. E | Mirabel, I. F | Irwin, M. J | Monaco, L | Morelli, L | Motta, V | Palma, T | Parisi, M. C | Parker, Q | Peñaloza, F | Pietrzyński, G | Pignata, G | Popescu, B | Gonzalez-Solares, E | Read, M. A | Rojas, A | Roman-Lopes, A | Ruiz, M. T | Saviane, I | Schreiber, M. R | Schröder, A. C | Sharma, S | Smith, M. D | Sodré Jr., L
Date: 2012
Language: eng
Resource Type: journal article
Identifier: http://hdl.handle.net/1959.14/177433
Description: 21 page(s)
Reviewed: Reviewed