Search Results - "Bidin, Christian Moni"

The chemical compositions of accreted and in situ galactic globular clusters according to SDSS/APOGEE by Horta, Danny, Schiavon, Ricardo P, Mackereth, J Ted, Beers, Timothy C, Fernández-Trincado, José G, Frinchaboy, Peter M, García-Hernández, D A, Geisler, Doug, Hasselquist, Sten, Jönsson, Henrik, Lane, Richard R, Majewski, Steven R, Mészáros, Szabolcs, Bidin, Christian Moni, Nataf, David M, Roman-Lopes, Alexandre, Nitschelm, Christian, Vargas-González, J, Zasowski, Gail

“…ABSTRACT Studies of the kinematics and chemical compositions of Galactic globular clusters (GCs) enable the reconstruction of the history of star formation,…”
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Metallicity and α-Element Abundance Gradients along the Sagittarius Stream as Seen by APOGEE by Hayes, Christian R., Majewski, Steven R., Hasselquist, Sten, Anguiano, Borja, Shetrone, Matthew, Law, David R., Schiavon, Ricardo P., Cunha, Katia, Smith, Verne V., Beaton, Rachael L., Price-Whelan, Adrian M., Allende Prieto, Carlos, Battaglia, Giuseppina, Bizyaev, Dmitry, Brownstein, Joel R., Cohen, Roger E., Frinchaboy, Peter M., García-Hernández, D. A., Lacerna, Ivan, Lane, Richard R., Mészáros, Szabolcs, Bidin, Christian Moni, Mũnoz, Ricardo R., Nidever, David L., Oravetz, Audrey, Oravetz, Daniel, Pan, Kaike, Roman-Lopes, Alexandre, Sobeck, Jennifer, Stringfellow, Guy

“…Abstract Using 3D positions and kinematics of stars relative to the Sagittarius (Sgr) orbital plane and angular momentum, we identify 166 Sgr stream members…”
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The Milky Way’s bulge star formation history as constrained from its bimodal chemical abundance distribution by Lian, Jianhui, Zasowski, Gail, Hasselquist, Sten, Nataf, David M, Thomas, Daniel, Moni Bidin, Christian, Fernández-Trincado, José G, Garcia-Hernandez, D A, Lane, Richard R, Majewski, Steven R, Roman-Lopes, Alexandre, Schultheis, Mathias

“…ABSTRACT We conduct a quantitative analysis of the star formation history (SFH) of the Milky Way’s (MW) bulge by exploiting the constraining power of its…”
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The Origins of Young Stars in the Direction of the Leading Arm of the Magellanic Stream: Abundances, Kinematics, and Orbits by Zhang, Lan, Casetti-Dinescu, Dana I, Bidin, Christian Moni, Méndez, Réne A, Girard, Terrence M, Vieira, Katherine, Korchagin, Vladimir I, van Altena, William F, Zhao, Gang

“…We explore the origins of the young B-type stars found by Casetti-Dinescu et al. (2014) at the outskirts of the Milky-Way disk in the sky region of Leading Arm…”
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Chemical Composition of Young Stars in the Leading Arm of the Magellanic System by Zhang, Lan, Moni Bidin, Christian, Casetti-Dinescu, Dana I., Méndez, Réne A., Girard, Terrence M., Korchagin, Vladimir I., Vieira, Katherine, van Altena, William F., Zhao, Gang

“…Abstract Chemical abundances of eight O- and B-type stars are determined from high-resolution spectra obtained with the MIKE instrument on the Magellan 6.5 m…”
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Near-infrared photometry of globular clusters towards the Galactic bulge: observations and photometric metallicity indicators by Cohen, Roger E, Bidin, Christian Moni, Mauro, Francesco, Bonatto, Charles, Geisler, Douglas

“…We present wide-field JHKS photometry of 16 Galactic globular clusters located towards the Galactic bulge, calibrated on the Two Micron All-Sky Survey…”
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High-resolution Extinction Map in the Direction of the Strongly Obscured Bulge Fossil Fragment Liller 1 by Pallanca, Cristina, Ferraro, Francesco R., Lanzoni, Barbara, Crociati, Chiara, Saracino, Sara, Dalessandro, Emanuele, Origlia, Livia, Rich, Michael R., Valenti, Elena, Geisler, Douglas, Mauro, Francesco, Villanova, Sandro, Moni Bidin, Christian, Beccari, Giacomo

“…Abstract We used optical images acquired with the Wide Field Camera of the Advanced Camera for Surveys on board the Hubble Space Telescope and near-infrared…”
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The age–chemical abundance structure of the Galactic disc – II. α-dichotomy and thick disc formation by Lian, Jianhui, Thomas, Daniel, Maraston, Claudia, Beers, Timothy C, Moni Bidin, Christian, Fernández-Trincado, José G, García-Hernández, D A, Lane, Richard R, Munoz, Ricardo R, Nitschelm, Christian, Roman-Lopes, Alexandre, Zamora, Olga

“…ABSTRACT We extend our previous work on the age–chemical abundance structure of the Galactic outer disc to the inner disc (4 < r < 8  kpc) based on the…”
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Exploring the Stellar Age Distribution of the Milky Way Bulge Using APOGEE by Hasselquist, Sten, Zasowski, Gail, Feuillet, Diane K., Schultheis, Mathias, Nataf, David M., Anguiano, Borja, Beaton, Rachael L., Beers, Timothy C., Cohen, Roger E., Cunha, Katia, Fernández-Trincado, José G., García-Hernández, D. A., Geisler, Doug, Holtzman, Jon A., Johnson, Jennifer, Lane, Richard R., Majewski, Steven R., Bidin, Christian Moni, Nitschelm, Christian, Roman-Lopes, Alexandre, Schiavon, Ricardo, Smith, Verne V., Sobeck, Jennifer

“…We present stellar age distributions of the Milky Way bulge region using ages for ∼6000 high-luminosity ( ), metal-rich ([Fe/H] ≥ −0.5) bulge stars observed by…”
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CAPOS: the bulge Cluster APOgee Survey IV elemental abundances of the bulge globular cluster NGC 6558 by González-Díaz, Danilo, Fernández-Trincado, José G, Villanova, Sandro, Geisler, Doug, Barbuy, Beatriz, Minniti, Dante, Beers, Timothy C, Moni Bidin, Christian, Mauro, Francesco, Muñoz, Cesar, Tang, Baitian, Soto, Mario, Monachesi, Antonela, Lane, Richard R, Frelijj, Heinz

“…ABSTRACT This study presents the results concerning six red giant stars members of the globular cluster NGC 6558. Our analysis utilized high-resolution…”
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The strange hot horizontal-branch binary star in NGC 6752 by Bidin, Christian Moni

“…M5865 is the only so-far confirmed close binary found in the extreme horizontal branch (EHB) of a globular cluster. A detailed study has recently proposed that…”
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Assessing the Stellar Population and the Environment of an H ii Region on the Far Side of the Galaxy by Chené, André-Nicolas, Benjamin, Robert A., Ramírez-Alegría, Sebastian, Borissova, Jura, Kurtev, Radostin, Bidin, Christian Moni, Mauro, Francesco, Lucas, Phil, Guo, Zhen, Smith, Leigh C., Gonzalez-Fernandez, Carlos, Ivanov, Valentin D., Minniti, Dante, Anderson, Loren. D., Armentrout, William. P., Gonzalez, Danilo, Herrero, Artemio, Ramírez, Karla Peña

“…Abstract We have investigated the stellar and interstellar content of the distant star formation region IRAS 17591-2228 (WISE H ii region GAL 007.47+0.06). It…”
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In-situ Star Formation in the Outskirts of the Large Magellanic Cloud: Gaia DR2 Confirmation by Casetti-Dinescu, Dana I, Girard, Terrence M, Bidin, Christian Moni, Zhang, Lan, Mendez, Rene A, Vieira, Katherine, Korchagin, Vladimir I, van Altena, William F

“…We explore the data release 2 (DR2) proper motions of six young, main-sequence stars, members of the Large Magellanic Cloud (LMC) reported by Moni Bidin et al…”
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APOGEE-2S Discovery of Light- and Heavy-Element Abundance Correlations in the Bulge Globular Cluster NGC 6380 by Fernández-Trincado, José G, Beers, Timothy C, Barbuy, Beatriz, Mészáros, Szabolcs, Minniti, Dante, Smith, Verne V, Cunha, Katia, Villanova, Sandro, Geisler, Doug, Majewski, Steven R, Carigi, Leticia, Tang, Baitian, Bidin, Christian Moni, Vieira, Katherine

“…We derive abundance ratios for nine stars in the relatively high-metallicity bulge globular cluster NGC 6380. We find a mean cluster metallicity between…”
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High-resolution extinction map in the direction of the strongly obscured bulge fossil fragment Liller 1 by Pallanca, Cristina, Ferraro, Francesco R, Lanzoni, Barbara, crociati, Chiara, Saracino, Sara, Dalessandro, Emanuele, Origlia, Livia, Rich, Michael R, Valenti, Elena, Geisler, Douglas, Mauro, Francesco, Villanova, Sandro, Bidin, Christian Moni, Beccari, Giacomo, --

“…We used optical images acquired with the Wide Field Camera of the Advanced Camera for Surveys onboard the Hubble Space Telescope and near-infrared data from…”
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Stellar activity with LAMOST. III. Temporal variability pattern in Pleiades, Praesepe, and Hyades by Fang, Xiang-Song, Bidin, Christian Moni, Zhao, Gang, Zhang, Li-Yun, Kumar, Yerra Bharat

“…We present the results from a systematic study of temporal variation of stellar activity in young late-type stars. We used multi-epoch LAMOST low-resolution…”
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APOGEE spectroscopic evidence for chemical anomalies in dwarf galaxies: The case of M~54 and Sagittarius by Fernández-Trincado, José G, Beers, Timothy C, Minniti, Dante, Bidin, Christian Moni, Barbuy, Beatriz, Villanova, Sandro, Geisler, Doug, Lane, Richard R, Roman-Lopes, Alexandre, Bizyaev, Dmitry

“…A&A 648, A70 (2021) We present evidence for globular cluster stellar debris in a dwarf galaxy system (Sagittarius: Sgr) based on an analysis of high-resolution…”
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VVV CL001: Likely the Most Metal-Poor Surviving Globular Cluster in the Inner Galaxy by Fernández-Trincado, José G, Minniti, Dante, Souza, Stefano O, Beers, Timothy C, Geisler, Doug, Bidin, Christian Moni, Villanova, Sandro, Majewski, Steven R, Barbuy, Beatriz, Pérez-Villegas, Angeles, Henao, Lady, Romero-Colmenares, María, Roman-Lopes, Alexandre, Lane, Richard R

“…We present the first high-resolution abundance analysis of the globular cluster VVV~CL001, which resides in a region dominated by high interstellar reddening…”
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APOGEE-2 Discovery of a Large Population of Relatively High-Metallicity Globular Cluster Debris by Fernández-Trincado, José G, Beers, Timothy C, Queiroz, Anna. B. A, Chiappini, Cristina, Minniti, Dante, Barbuy, Beatriz, Majewski, Steven R, Ortigoza-Urdaneta, Mario, Bidin, Christian Moni, Robin, Annie C, Moreno, Edmundo, Chaves-Velasquez, Leonardo, Villanova, Sandro, Lane, Richard R, Pan, Kaike, Bizyaev, Dmitry

“…We report the discovery of a new, chemically distinct population of relatively high-metallicity ([Fe/H] $> -0.7$) red giant stars with super-solar [N/Fe]…”
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Discovery of a large population of Nitrogen-Enhanced stars in the Magellanic Clouds by Fernández-Trincado, José G, Beers, Timothy C, Minniti, Dante, Carigi, Leticia, Barbuy, Beatriz, Placco, Vinicius M, Bidin, Christian Moni, Villanova, Sandro, Roman-Lopes, Alexandre, Nitschelm, Christian

“…We report the APOGEE-2S$+$ discovery of a unique collection of nitrogen-enhanced mildly metal-poor giant stars, peaking at [Fe/H]$\sim -0.89$ with no carbon…”
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