Browsing by Author "daa90718-b5a3-4ed5-8f2d-7813f7967ae6"

Now showing items 1-4 of 4

    • Metallicity and alpha-element abundance gradients along the Sagittarius Stream as seen by APOGEE 
      Hayes, Christian; Majewski, Steven; Hasselquist, Sten; Anguiano, Borja; Shetrone, Matthew; Law, David; Schiavon, Ricardo; Cunha, Katia; Smith, Verne; Beaton, Rachael; Price Whelan, Adrián; Allende Prieto, Carlos; Battaglia, Giuseppina; Bizyaev, Dimitry; Brownstein, Joel; Cohen, Roger; Frinchaboy, Peter; García Hernández, D. A.; Lacerna, Iván; Lane, Richard; Meszaros, Szabolcs; Moni Bidin, Christian; Muñoz Vidal, Ricardo; Nidever, David; Oravetz, Audrey; Oravetz, Daniel; Pan, Kaike; Román Lopes, Alexandre; Sobeck, Jennifer; Stringfellow, Guy (IOP, 2020)
      Using 3D positions and kinematics of stars relative to the Sagittarius (Sgr) orbital plane and angular momentum, we identify 166 Sgr stream members observed by the Apache Point Observatory Galactic Evolution Experiment ...
    • The age-chemical abundance structure of the Galactic disc - II. alpha-dichotomy and thick disc formation 
      Lian, Jianhui; Thomas, Daniel; Maraston, Claudia; Beers, Timothy C.; Moni Bidin, Christian; Fernández Trincado, José G.; Garcia-Hernandez, D. A.; Lane, Richard R.; Muñoz Vidal, Ricardo; Nitschelm, Christian; Roman Lopes, Alexandre; Zamora, Olga (Oxford University Press, 2020)
      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 SDSS/APOGEE survey. Different from the outer disc, the inner disc stars exhibit ...
    • The Hercules stream as seen by APOGEE-2 South 
      Hunt, Jason A. S.; Bovy, Jo; Pérez Villegas, Angeles; Holtzman, Jon A.; Sobeck, Jennifer; Chojnowski, Drew; Santana, Felipe A.; Palicio, Pedro A.; Wegg, Christopher; Gerhard, Ortwin; Almeida, Andres; Bizyaev, Dmitry; Fernández Trincado, Jose G.; Lane, Richard R.; Longa Peña, Penélope; Majewski, Steven R.; Pan, Kaike; Roman Lópes, Alexandre (Oxford University Press, 2018)
      The Hercules stream is a group of comoving stars in the solar neighbourhood, which can potentially be explained as a signature of either the outer Lindblad resonance (OLR) of a fast Galactic bar or the corotation resonance ...
    • Two groups of red giants with distinct chemical abundances in the bulge globular cluster NGC 6553 through ... 
      Tang, Baitian; Cohen, Roger E.; Geisler, Doug; Schiavon, Ricardo P.; Majewski, Steven R.; Villanova, Sandro; Carrera, Ricardo; Zamora, Olga; García Hernández, D. A.; Shetrone, Matthew; Frinchaboy, Peter; Meza, Andrés; Fernández Trincado, J. G.; Muñoz Vidal, Ricardo Rodrigo; Lin, Chien-Cheng; Lane, Richard R.; Nitschelm, Christian; Pan, Kaike; Bizyaev, Dmitry; Oravetz, Daniel; Simmons, Audrey (Oxford University, 2017)
      Multiple populations revealed in globular clusters (GCs) are important windows to the forma-tion and evolution of these stellar systems. The metal-rich GCs in the Galactic bulge are anindispensable part of this picture, ...