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The Sloan Digital Sky Survey (SDSS) has been in operation since 2000 April. This paper presents the tenth public data release (DR10) from its current incarnation, SDSS-III. This data release includes the first spectroscopic data from the…

Instrumentation and Methods for Astrophysics · Physics 2015-06-16 Christopher P. Ahn , Rachael Alexandroff , Carlos Allende Prieto , Friedrich Anders , Scott F. Anderson , Timothy Anderton , Brett H. Andrews , Éric Aubourg , Stephen Bailey , Fabienne A. Bastien , Julian E. Bautista , Timothy C. Beers , Alessandra Beifiori , Chad F. Bender , Andreas A. Berlind , Florian Beutler , Vaishali Bhardwaj , Jonathan C. Bird , Dmitry Bizyaev , Cullen H. Blake , Michael R. Blanton , Michael Blomqvist , John J. Bochanski , Adam S. Bolton , Arnaud Borde , Jo Bovy , Alaina Shelden Bradley , W. N. Brandt , Dorothée Brauer , J. Brinkmann , Joel R. Brownstein , Nicolás G. Busca , William Carithers , Joleen K. Carlberg , Aurelio R. Carnero , Michael A. Carr , Cristina Chiappini , S. Drew Chojnowski , Chia-Hsun Chuang , Johan Comparat , Justin R. Crepp , Stefano Cristiani , Rupert A. C. Croft , Antonio J. Cuesta , Katia Cunha , Luiz N. da Costa , Kyle S. Dawson , Nathan De Lee , Janice D. R. Dean , Timothée Delubac , Rohit Deshpande , Saurav Dhital , Anne Ealet , Garrett L. Ebelke , Edward M. Edmondson , Daniel J. Eisenstein , Courtney R. Epstein , Stephanie Escoffier , Massimiliano Esposito , Michael L. Evans , D. Fabbian , Xiaohui Fan , Ginevra Favole , Bruno Femenía Castellá , Emma Fernández Alvar , Diane Feuillet , Nurten Filiz Ak , Hayley Finley , Scott W. Fleming , Andreu Font-Ribera , Peter M. Frinchaboy , J. G. Galbraith-Frew , D. A. García-Hernández , Ana E. García Pérez , Jian Ge , R. Génova-Santos , Bruce A. Gillespie , Léo Girardi , Jonay I. González Hernández , J. Richard Gott , James E. Gunn , Hong Guo , Samuel Halverson , Paul Harding , David W. Harris , Sten Hasselquist , Suzanne L. Hawley , Michael Hayden , Frederick R. Hearty , Artemio Herrero Davó , Shirley Ho , David W. Hogg , Jon A. Holtzman , Klaus Honscheid , Joseph Huehnerhoff , Inese I. Ivans , Kelly M. Jackson , Peng Jiang , Jennifer A. Johnson , David Kirkby , K. Kinemuchi , Mark A. Klaene , Jean-Paul Kneib , Lars Koesterke , Ting-Wen Lan , Dustin Lang , Jean-Marc Le Goff , Khee-Gan Lee , Young Sun Lee , Daniel C. Long , Craig P. Loomis , Sara Lucatello , Robert H. Lupton , Bo Ma , Claude E. Mack , Suvrath Mahadevan , Marcio A. G. Maia , Steven R. Majewski , Elena Malanushenko , Viktor Malanushenko , A. Manchado , Marc Manera , Claudia Maraston , Daniel Margala , Sarah L. Martell , Karen L. Masters , Cameron K. McBride , Ian D. McGreer , Richard G. McMahon , Brice Ménard , Sz. Mészáros , Jordi Miralda-Escudé , Hironao Miyatake , Antonio D. Montero-Dorta , Francesco Montesano , Surhud More , Heather L. Morrison , Demitri Muna , Jeffrey A. Munn , Adam D. Myers , Duy Cuong Nguyen , Robert C. Nichol , David L. Nidever , Pasquier Noterdaeme , Sebastián E. Nuza , Julia E. O'Connell , Robert W. O'Connell , Ross O'Connell , Matthew D. Olmstead , Daniel J. Oravetz , Russell Owen , Nikhil Padmanabhan , Nathalie Palanque-Delabrouille , Kaike Pan , John K. Parejko , Isabelle Pâris , Joshua Pepper , Will J. Percival , Ignasi Pérez-Ràfols , Hélio Dotto Perottoni , Patrick Petitjean , Matthew M. Pieri , M. H. Pinsonneault , Francisco Prada , Adrian M. Price-Whelan , M. Jordan Raddick , Mubdi Rahman , Rafael Rebolo , Beth A. Reid , Jonathan C. Richards , Rogério Riffel , Annie C. Robin , H. J. Rocha-Pinto , Constance M. Rockosi , Natalie A. Roe , Ashley J. Ross , Nicholas P. Ross , Graziano Rossi , Arpita Roy , J. A. Rubiño-Martin , Cristiano G. Sabiu , Ariel G. Sánchez , Basílio Santiago , Conor Sayres , Ricardo P. Schiavon , David J. Schlegel , Katharine J. Schlesinger , Sarah J. Schmidt , Donald P. Schneider , Mathias Schultheis , Kris Sellgren , Hee-Jong Seo , Yue Shen , Matthew Shetrone , Yiping Shu , Audrey E. Simmons , M. F. Skrutskie , Anže Slosar , Verne V. Smith , Stephanie A. Snedden , Jennifer S. Sobeck , Flavia Sobreira , Keivan G. Stassun , Matthias Steinmetz , Michael A. Strauss , Alina Streblyanska , Nao Suzuki , Molly E. C. Swanson , Ryan C. Terrien , Aniruddha R. Thakar , Daniel Thomas , Benjamin A. Thompson , Jeremy L. Tinker , Rita Tojeiro , Nicholas W. Troup , Jan Vandenberg , Mariana Vargas Magaña , Matteo Viel , Nicole P. Vogt , David A. Wake , Benjamin A. Weaver , David H. Weinberg , Benjamin J. Weiner , Martin White , Simon D. M. White , John C. Wilson , John P. Wisniewski , W. M. Wood-Vasey , Christophe Yèche , Donald G. York , O. Zamora , Gail Zasowski , Idit Zehavi , Zheng Zheng , Guangtun Zhu

Stars presently identified in the bulge spheroid are probably very old, and their abundances can be interpreted as due to the fast chemical enrichment of the early Galactic bulge. The abundances of the iron-peak elements are important…

We combine narrow/medium-band filter photometry from the Southern Photometric Local Universe Survey (S-PLUS) DR4 with ultra broad-band filter photometry from Gaia EDR3 to derive fundamental stellar parameters ($T_{\rm eff}$, $\log g$,…

The galaxy formation process in the $\Lambda$-Cold Dark Matter scenario can be constrained from the analysis of stars in the Milky Way's halo system. We examine the variation of chemical abundances in distant halo stars observed by the…

The Apache Point Observatory Galactic Evolution Experiment (APOGEE) has observed the H-band spectra of over 200 000 stars with $R\sim22 000$. The main motivation for this work is to test an alternative method to the standard APOGEE pipeline…

Solar and Stellar Astrophysics · Physics 2020-04-29 Pedro Sarmento , Elisa Delgado Mena , Bárbara Rojas-Ayala , Sergi Blanco-Cuaresma

We report the serendipitous discovery of a nitrogen-rich, mildly metal-poor ([Fe/H]=-1.08) giant star in a single-lined spectroscopic binary system found in the SDSS-IV Apache Point Observatory Galactic Evolution Experiment (APOGEE-2)…

High-resolution H-band spectra of five bright field K, M, and MS giants, obtained from the archives of the Kitt Peak National Observatory (KPNO) Fourier Transform Spectrometer (FTS), are analyzed to determine chemical abundances of 16…

In addition to comprehensive surveys of the Milky Way bulge, disk, and halo, the Apache Point Galactic Evolution Experiment (APOGEE) project observed seven dwarf spheroidal satellites (dSphs) of the Milky Way: Carina, Sextans, Sculptor,…

This paper documents the seventeenth data release (DR17) from the Sloan Digital Sky Surveys; the fifth and final release from the fourth phase (SDSS-IV). DR17 contains the complete release of the Mapping Nearby Galaxies at Apache Point…

Astrophysics of Galaxies · Physics 2024-09-04 Abdurro'uf , Katherine Accetta , Conny Aerts , Victor Silva Aguirre , Romina Ahumada , Nikhil Ajgaonkar , N. Filiz Ak , Shadab Alam , Carlos Allende Prieto , Andres Almeida , Friedrich Anders , Scott F. Anderson , Brett H. Andrews , Borja Anguiano , Erik Aquino-Ortiz , Alfonso Aragon-Salamanca , Maria Argudo-Fernandez , Metin Ata , Marie Aubert , Vladimir Avila-Reese , Carles Badenes , Rodolfo H. Barba , Kat Barger , Jorge K. Barrera-Ballesteros , Rachael L. Beaton , Timothy C. Beers , Francesco Belfiore , Chad F. Bender , Mariangela Bernardi , Matthew A. Bershady , Florian Beutler , Christian Moni Bidin , Jonathan C. Bird , Dmitry Bizyaev , Guillermo A. Blanc , Michael R. Blanton , Nicholas Fraser Boardman , Adam S. Bolton , Mederic Boquien , Jura Borissova , Jo Bovy , W. N. Brandt , Jordan Brown , Joel R. Brownstein , Marcella Brusa , Johannes Buchner , Kevin Bundy , Joseph N. Burchett , Martin Bureau , Adam Burgasser , Tuesday K. Cabang , Stephanie Campbell , Michele Cappellari , Joleen K. Carlberg , Fabio Carneiro Wanderley , Ricardo Carrera , Jennifer Cash , Yan-Ping Chen , Wei-Huai Chen , Brian Cherinka , Cristina Chiappini , Peter Doohyun Choi , S. Drew Chojnowski , Haeun Chung , Nicolas Clerc , Roger E. Cohen , Julia M. Comerford , Johan Comparat , Luiz da Costa , Kevin Covey , Jeffrey D. Crane , Irene Cruz-Gonzalez , Connor Culhane , Katia Cunha , Y. Sophia Dai , Guillermo Damke , Jeremy Darling , James W. Davidson , Roger Davies , Kyle Dawson , Nathan De Lee , Aleksandar M. Diamond-Stanic , Mariana Cano-Diaz , Helena Dominguez Sanchez , John Donor , Chris Duckworth , Tom Dwelly , Daniel J. Eisenstein , Yvonne P. Elsworth , Eric Emsellem , Mike Eracleous , Stephanie Escoffier , Xiaohui Fan , Emily Farr , Shuai Feng , Jose G. Fernandez-Trincado , Diane Feuillet , Andreas Filipp , Sean P Fillingham , Peter M. Frinchaboy , Sebastien Fromenteau , Lluis Galbany , Rafael A. Garcia , D. A. Garcia-Hernandez , Junqiang Ge , Doug Geisler , Joseph Gelfand , Tobias Geron , Benjamin J. Gibson , Julian Goddy , Diego Godoy-Rivera , Kathleen Grabowski , Paul J. Green , Michael Greener , Catherine J. Grier , Emily Griffith , Hong Guo , Julien Guy , Massinissa Hadjara , Paul Harding , Sten Hasselquist , Christian R. Hayes , Fred Hearty , Jesus Hernandez , Lewis Hill , David W. Hogg , Jon A. Holtzman , Danny Horta , Bau-Ching Hsieh , Chin-Hao Hsu , Yun-Hsin Hsu , Daniel Huber , Marc Huertas-Company , Brian Hutchinson , Ho Seong Hwang , Hector J. Ibarra-Medel , Jacob Ider Chitham , Gabriele S. Ilha , Julie Imig , Will Jaekle , Tharindu Jayasinghe , Xihan Ji , Jennifer A. Johnson , Amy Jones , Henrik Jonsson , Ivan Katkov , Arman Khalatyan , Karen Kinemuchi , Shobhit Kisku , Johan H. Knapen , Jean-Paul Kneib , Juna A. Kollmeier , Miranda Kong , Marina Kounkel , Kathryn Kreckel , Dhanesh Krishnarao , Ivan Lacerna , Richard R. Lane , Rachel Langgin , Ramon Lavender , David R. Law , Daniel Lazarz , Henry W. Leung , Ho-Hin Leung , Hannah M. Lewis , Cheng Li , Ran Li , Jianhui Lian , Fu-Heng Liang , Lihwai Lin , Yen-Ting Lin , Sicheng Lin , Chris Lintott , Dan Long , Penelope Longa-Pena , Carlos Lopez-Coba , Shengdong Lu , Britt F. Lundgren , Yuanze Luo , J. Ted Mackereth , Axel de la Macorra , Suvrath Mahadevan , Steven R. Majewski , Arturo Manchado , Travis Mandeville , Claudia Maraston , Berta Margalef-Bentabol , Thomas Masseron , Karen L. Masters , Savita Mathur , Richard M. McDermid , Myles Mckay , Andrea Merloni , Michael Merrifield , Szabolcs Meszaros , Andrea Miglio , Francesco Di Mille , Dante Minniti , Rebecca Minsley , Antonela Monachesi , Jeongin Moon , Benoit Mosser , John Mulchaey , Demitri Muna , Ricardo R. Munoz , Adam D. Myers , Natalie Myers , Seshadri Nadathur , Preethi Nair , Kirpal Nandra , Justus Neumann , Jeffrey A. Newman , David L. Nidever , Farnik Nikakhtar , Christian Nitschelm , Julia E. O'Connell , Luis Garma-Oehmichen , Gabriel Luan Souza de Oliveira , Richard Olney , Daniel Oravetz , Mario Ortigoza-Urdaneta , Yeisson Osorio , Justin Otter , Zachary J. Pace , Nelson Padilla , Kaike Pan , Hsi-An Pan , Taniya Parikh , James Parker , Sebastien Peirani , Karla Pena Ramirez , Samantha Penny , Will J. Percival , Ismael Perez-Fournon , Marc Pinsonneault , Frederick Poidevin , Vijith Jacob Poovelil , Adrian M. Price-Whelan , Anna Barbara de Andrade Queiroz , M. Jordan Raddick , Amy Ray , Sandro Barboza Rembold , Nicole Riddle , Rogemar A. Riffel , Rogerio Riffel , Hans-Walter Rix , Annie C. Robin , Aldo Rodriguez-Puebla , Alexandre Roman-Lopes , Carlos Roman-Zuniga , Benjamin Rose , Ashley J. Ross , Graziano Rossi , Kate H. R. Rubin , Mara Salvato , Sebastian F. Sanchez , Jose R. Sanchez-Gallego , Robyn Sanderson , Felipe Antonio Santana Rojas , Edgar Sarceno , Regina Sarmiento , Conor Sayres , Elizaveta Sazonova , Adam L. Schaefer , Ricardo Schiavon , David J Schlegel , Donald P. Schneider , Mathias Schultheis , Axel Schwope , Aldo Serenelli , Javier Serna , Zhengyi Shao , Griffin Shapiro , Anubhav Sharma , Yue Shen , Matthew Shetrone , Yiping Shu , Joshua D. Simon , M. F. Skrutskie , Rebecca Smethurst , Verne Smith , Jennifer Sobeck , Taylor Spoo , Dani Sprague , David V. Stark , Keivan G. Stassun , Matthias Steinmetz , Dennis Stello , Alexander Stone-Martinez , Thaisa Storchi-Bergmann , Guy S. Stringfellow , Amelia Stutz , Yung-Chau Su , Manuchehr Taghizadeh-Popp , Michael S. Talbot , Jamie Tayar , Eduardo Telles , Johanna Teske , Ani Thakar , Christopher Theissen , Daniel Thomas , Andrew Tkachenko , Rita Tojeiro , Hector Hernandez Toledo , Nicholas W. Troup , Jonathan R. Trump , James Trussler , Jacqueline Turner , Sarah Tuttle , Eduardo Unda-Sanzana , Jose Antonio Vazquez-Mata , Marica Valentini , Octavio Valenzuela , Jaime Vargas-Gonzalez , Mariana Vargas-Magana , Pablo Vera Alfaro , Sandro Villanova , Fiorenzo Vincenzo , David Wake , Jack T. Warfield , Jessica Diane Washington , Benjamin Alan Weaver , Anne-Marie Weijmans , David H. Weinberg , Achim Weiss , Kyle B. Westfall , Vivienne Wild , Matthew C. Wilde , John C. Wilson , Robert F. Wilson , Mikayla Wilson , Julien Wolf , W. M. Wood-Vasey , Renbin Yan , Olga Zamora , Gail Zasowski , Kai Zhang , Cheng Zhao , Zheng Zheng , Zheng Zheng , Kai Zhu

We present the results of an analysis for 107 extremely metal-poor (EMP) stars with metallicities less than [Fe/H] = -3.0, identified from medium-resolution spectra in SDSS. We follow a methodology based on comparisons of the observed…

Solar and Stellar Astrophysics · Physics 2016-09-07 E. Fernandez-Alvar , C. Allende Prieto , T. C. Beers , Y. S. Lee , T. Masseron , D. P. Schneider

We present an updated catalog of stellar parameters, including effective temperature, luminosity classification, and metallicity, for over fifty million stars from the SkyMapper Southern Survey (SMSS) DR4 and Gaia DR3. The accuracy of the…

Astrophysics of Galaxies · Physics 2025-04-03 Yang Huang , Timothy C. Beers

We map the trends of elemental abundance ratios across the Galactic disk, spanning R = 3-15 kpc and midplane distance |Z|= 0-2 kpc, for 15 elements in a sample of 20,485 stars measured by the SDSS/APOGEE survey (O, Na, Mg, Al, Si, P, S, K,…

The Apache Point Observatory Galactic Evolution Experiment (APOGEE), one of the programs in the Sloan Digital Sky Survey III (SDSS-III), has now completed its systematic, homogeneous spectroscopic survey sampling all major populations of…

Instrumentation and Methods for Astrophysics · Physics 2017-09-06 Steven R. Majewski , Ricardo P. Schiavon , Peter M. Frinchaboy , Carlos Allende Prieto , Robert Barkhouser , Dmitry Bizyaev , Basil Blank , Sophia Brunner , Adam Burton , Ricardo Carrera , S. Drew Chojnowski , Katia Cunha , Courtney Epstein , Greg Fitzgerald , Ana E. Garcia Perez , Fred R. Hearty , Chuck Henderson , Jon A. Holtzman , Jennifer A. Johnson , Charles R. Lam , James E. Lawler , Paul Maseman , Szabolcs Meszaros , Matthew Nelson , Duy Coung Nguyen , David L. Nidever , Marc Pinsonneault , Matthew Shetrone , Stephen Smee , Verne V. Smith , Todd Stolberg , Michael F. Skrutskie , Eric Walker , John C. Wilson , Gail Zasowski , Friedrich Anders , Sarbani Basu , Stephane Beland , Michael R. Blanton , Jo Bovy , Joel R. Brownstein , Joleen Carlberg , William Chaplin , Cristina Chiappini , Daniel J. Eisenstein , Yvonne Elsworth , Diane Feuillet , Scott W. Fleming , Jessica Galbraith-Frew , Rafael A. Garcia , D. Anibal Garcia-Hernandez , Bruce A. Gillespie , Leo Girardi , James E. Gunn , Sten Hasselquist , Michael R. Hayden , Saskia Hekker , Inese Ivans , Karen Kinemuchi , Mark Klaene , Suvrath Mahadevan , Savita Mathur , Benoit Mosser , Demitri Muna , Jeffrey A. Munn , Robert C. Nichol , Robert W. O'Connell , A. C. Robin , Helio Rocha-Pinto , Matthias Schultheis , Aldo M. Serenelli , Neville Shane , Victor Silva Aguirre , Jennifer S. Sobeck , Benjamin Thompson , Nicholas W. Troup , David H. Weinberg , Olga Zamora

We present the $H$-band spectral line lists adopted by the Apache Point Observatory Galactic Evolution Experiment (APOGEE). The APOGEE line lists comprise astrophysical, theoretical, and laboratory sources from the literature, as well as…

The third generation of the Sloan Digital Sky Survey (SDSS-III) took data from 2008 to 2014 using the original SDSS wide-field imager, the original and an upgraded multi-object fiber-fed optical spectrograph, a new near-infrared…

Instrumentation and Methods for Astrophysics · Physics 2016-08-07 Shadab Alam , Franco D. Albareti , Carlos Allende Prieto , F. Anders , Scott F. Anderson , Brett H. Andrews , Eric Armengaud , Éric Aubourg , Stephen Bailey , Julian E. Bautista , Rachael L. Beaton , Timothy C. Beers , Chad F. Bender , Andreas A. Berlind , Florian Beutler , Vaishali Bhardwaj , Jonathan C. Bird , Dmitry Bizyaev , Cullen H. Blake , Michael R. Blanton , Michael Blomqvist , John J. Bochanski , Adam S. Bolton , Jo Bovy , A. Shelden Bradley , W. N. Brandt , D. E. Brauer , J. Brinkmann , Peter J. Brown , Joel R. Brownstein , Angela Burden , Etienne Burtin , Nicolás G. Busca , Zheng Cai , Diego Capozzi , Aurelio Carnero Rosell , Ricardo Carrera , Yen-Chi Chen , Cristina Chiappini , S. Drew Chojnowski , Chia-Hsun Chuang , Nicolas Clerc , Johan Comparat , Kevin Covey , Rupert A. C. Croft , Antonio J. Cuesta , Katia Cunha , Luiz N. da Costa , Nicola Da Rio , James R. A. Davenport , Kyle S. Dawson , Nathan De Lee , Timothée Delubac , Rohit Deshpande , Letícia Dutra-Ferreira , Tom Dwelly , Anne Ealet , Garrett L. Ebelke , Edward M. Edmondson , Daniel J. Eisenstein , Stephanie Escoffier , Massimiliano Esposito , Xiaohui Fan , Emma Fernández-Alvar , Diane Feuillet , Nurten Filiz Ak , Hayley Finley , Alexis Finoguenov , Kevin Flaherty , Scott W. Fleming , Andreu Font-Ribera , Jonathan Foster , Peter M. Frinchaboy , J. G. Galbraith-Frew , D. A. García-Hernández , Ana E. García Pérez , Patrick Gaulme , Jian Ge , R. Génova-Santos , Luan Ghezzi , Bruce A. Gillespie , Léo Girardi , Daniel Goddard , Satya Gontcho A Gontcho , Jonay I. González Hernández , Eva K. Grebel , Jan Niklas Grieb , Nolan Grieves , James E. Gunn , Hong Guo , Paul Harding , Sten Hasselquist , Suzanne L. Hawley , Michael Hayden , Fred R. Hearty , Shirley Ho , David W. Hogg , Kelly Holley-Bockelmann , Jon A. Holtzman , Klaus Honscheid , Joseph Huehnerhoff , Linhua Jiang , Jennifer A. Johnson , Karen Kinemuchi , David Kirkby , Francisco Kitaura , Mark A. Klaene , Jean-Paul Kneib , Xavier P. Koenig , Charles R. Lam , Ting-Wen Lan , Dustin Lang , Pierre Laurent , Jean-Marc Le Goff , Alexie Leauthaud , Khee-Gan Lee , Young Sun Lee , Timothy C. Licquia , Jian Liu , Daniel C. Long , Martín López-Corredoira , Diego Lorenzo-Oliveira , Sara Lucatello , Britt Lundgren , Robert H. Lupton , Claude E. Mack , Suvrath Mahadevan , Marcio A. G. Maia , Steven R. Majewski , Elena Malanushenko , Viktor Malanushenko , A. Manchado , Marc Manera , Qingqing Mao , Claudia Maraston , Robert C. Marchwinski , Daniel Margala , Sarah L. Martell , Marie Martig , Karen L. Masters , Cameron K. McBride , Peregrine M. McGehee , Ian D. McGreer , Richard G. McMahon , Brice Ménard , Marie-Luise Menzel , Andrea Merloni , Szabolcs Mészáros , Adam A. Miller , Jordi Miralda-Escudé , Hironao Miyatake , Antonio D. Montero-Dorta , Surhud More , Xan Morice-Atkinson , Heather L. Morrison , Demitri Muna , Adam D. Myers , Jeffrey A. Newman , Mark Neyrinck , Duy Cuong Nguyen , Robert C. Nichol , David L. Nidever , Pasquier Noterdaeme , Sebastián E. Nuza , Julia E. O'Connell , Robert W. O'Connell , Ross O'Connell , Ricardo L. C. Ogando , Matthew D. Olmstead , Audrey E. Oravetz , Daniel J. Oravetz , Keisuke Osumi , Russell Owen , Deborah L. Padgett , Nikhil Padmanabhan , Martin Paegert , Nathalie Palanque-Delabrouille , Kaike Pan , John K. Parejko , Changbom Park , Isabelle Pâris , Petchara Pattarakijwanich , M. Pellejero-Ibanez , Joshua Pepper , Will J. Percival , Ismael Pérez-Fournon , Ignasi Pérez-Ràfols , Patrick Petitjean , Matthew M. Pieri , Marc H. Pinsonneault , Gustavo F. Porto de Mello , Francisco Prada , Abhishek Prakash , Adrian M. Price-Whelan , M. Jordan Raddick , Mubdi Rahman , Beth A. Reid , James Rich , Hans-Walter Rix , Annie C. Robin , Constance M. Rockosi , Thaíse S. Rodrigues , Sergio Rodríguez-Rottes , Natalie A. Roe , Ashley J. Ross , Nicholas P. Ross , Graziano Rossi , John J. Ruan , J. A. Rubiño-Martín , Eli S. Rykoff , Salvador Salazar-Albornoz , Mara Salvato , Lado Samushia , Ariel G. Sánchez , Basílio Santiago , Conor Sayres , Ricardo P. Schiavon , David J. Schlegel , Sarah J. Schmidt , Donald P. Schneider , Mathias Schultheis , Axel D. Schwope , C. G. Scóccola , Kris Sellgren , Hee-Jong Seo , Neville Shane , Yue Shen , Matthew Shetrone , Yiping Shu , Thirupathi Sivarani , M. F. Skrutskie , Anže Slosar , Verne V. Smith , Flávia Sobreira , Keivan G. Stassun , Matthias Steinmetz , Michael A. Strauss , Alina Streblyanska , Molly E. C. Swanson , Jonathan C. Tan , Jamie Tayar , Ryan C. Terrien , Aniruddha R. Thakar , Daniel Thomas , Benjamin A. Thompson , Jeremy L. Tinker , Rita Tojeiro , Nicholas W. Troup , Mariana Vargas-Magaña , Jose A. Vazquez , Licia Verde , Matteo Viel , Nicole P. Vogt , David A. Wake , Ji Wang , Benjamin A. Weaver , David H. Weinberg , Benjamin J. Weiner , Martin White , John C. Wilson , John P. Wisniewski , W. M. Wood-Vasey , Christophe Yèche , Donald G. York , Nadia L. Zakamska , O. Zamora , Gail Zasowski , Idit Zehavi , Gong-Bo Zhao , Zheng Zheng , Xu Zhou , Zhimin Zhou , Guangtun Zhu , Hu Zou

The Sloan Digital Sky Survey--III (SDSS--III) Apache Point Observatory Galactic Evolution Experiment (APOGEE) has obtained high resolution (R $\sim$ 22,500), high signal-to-noise ratio ($>$ 100) spectra in the H$-$band ($\sim$1.5$-$1.7…

The Apache Point Observatory Galactic Evolution Experiment (APOGEE), part of the Sloan Digital Sky Survey III, explores the stellar populations of the Milky Way using the Sloan 2.5-m telescope linked to a high resolution (R~22,500),…

We report the first detailed chemical abundance analysis of the exoplanet-hosting M-dwarf stars Kepler-138 and Kepler-186 from the analysis of high-resolution ($R$ $\sim$ 22,500) $H$-band spectra from the SDSS IV - APOGEE survey. Chemical…