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Starting in winter 2008/2009 an L-band 7-Feed-Array receiver is used for a 21-cm line survey performed with the 100-m telescope, the Effelsberg-Bonn HI survey (EBHIS). The EBHIS will cover the whole northern hemisphere for decl.>-5 deg…

Instrumentation and Methods for Astrophysics · Physics 2015-05-19 B. Winkel , P. M. W. Kalberla , J. Kerp , L. Floeer

In this work we make use of DR14 APOGEE spectroscopic data to study a sample of 92 known OB stars. We developed a near-infrared semi-empirical spectral classification method that was successfully used in case of four new exemplars,…

The radial velocity catalog from the Apache Point Observatory Galactic Evolution Experiment (APOGEE) is unique in its simultaneously large volume and high precision as a result of its decade-long survey duration, multiplexing (600 fibers),…

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

Since autumn 2008 an L-band 7-Feed-Array is operated for astronomical science at the 100-m radio telescope at Effelsberg. This receiver is used to perform an unbiased, fully sampled HI survey of the whole northern hemisphere observing both…

Astrophysics of Galaxies · Physics 2016-08-14 B. Winkel , J. Kerp , P. M. W. Kalberla , N. Ben Bekhti

The properties of Milky Way satellite galaxies have important implications for galaxy formation, reionization, and the fundamental physics of dark matter. However, the population of Milky Way satellites includes the faintest known galaxies,…

Integrated light spectroscopy from galaxies can be used to study the stellar populations that cannot be resolved into individual stars. This analysis relies on stellar population synthesis (SPS) techniques to study the formation history and…

We introduce the Southern Stellar Stream Spectroscopy Survey (${S}^5$), an on-going program to map the kinematics and chemistry of stellar streams in the Southern Hemisphere. The initial focus of ${S}^5$ has been spectroscopic observations…

The VST Photometric Halpha Survey of the Southern Galactic Plane and Bulge (VPHAS+) is surveying the southern Milky Way in u, g, r, i and Halpha at 1 arcsec angular resolution. Its footprint spans the Galactic latitude range -5 < b < +5 at…

This paper documents the sixteenth data release (DR16) from the Sloan Digital Sky Surveys; the fourth and penultimate from the fourth phase (SDSS-IV). This is the first release of data from the southern hemisphere survey of the Apache Point…

Astrophysics of Galaxies · Physics 2020-07-08 Romina Ahumada , Carlos Allende Prieto , Andres Almeida , Friedrich Anders , Scott F. Anderson , Brett H. Andrews , Borja Anguiano , Riccardo Arcodia , Eric Armengaud , Marie Aubert , Santiago Avila , Vladimir Avila-Reese , Carles Badenes , Christophe Balland , Kat Barger , Jorge K. Barrera-Ballesteros , Sarbani Basu , Julian Bautista , Rachael L. Beaton , Timothy C. Beers , B. Izamar T. Benavides , Chad F. Bender , Mariangela Bernardi , Matthew Bershady , Florian Beutler , Christian Moni Bidin , Jonathan Bird , Dmitry Bizyaev , Guillermo A. Blanc , Michael R. Blanton , Mederic Boquien , Jura Borissova , Jo Bovy , W. N. Brandt , Jonathan Brinkmann , Joel R. Brownstein , Kevin Bundy , Martin Bureau , Adam Burgasser , Etienne Burtin , Mariana Cano-Diaz , Raffaella Capasso , Michele Cappellari , Ricardo Carrera , Solene Chabanier , William Chaplin , Michael Chapman , Brian Cherinka , Cristina Chiappini , Peter Doohyun Choi , S. Drew Chojnowski , Haeun Chung , Nicolas Clerc , Damien Coffey , Julia M. Comerford , Johan Comparat , Luiz da Costa , Marie-Claude Cousinou , Kevin Covey , Jeffrey D. Crane , Katia Cunha , Gabriele da Silva Ilha , Yu Sophia Dai , Sanna B. Damsted , Jeremy Darling , James W. Davidson , Roger Davies , Kyle Dawson , Nikhil De , Axel de la Macorra , Nathan De Lee , Anna Barbara de Andrade Queiroz , Alice Deconto Machado , Sylvain de la Torre , Flavia Dell'Agli , Helion du Mas des Bourboux , Aleksandar M. Diamond-Stanic , Sean Dillon , John Donor , Niv Drory , Chris Duckworth , Tom Dwelly , Garrett Ebelke , Sarah Eftekharzadeh , Arthur Davis Eigenbrot , Yvonne P. Elsworth , Mike Eracleous , Ghazaleh Erfanianfar , Stephanie Escoffier , Xiaohui Fan , Emily Farr , Jose G. Fernandez-Trincado , Diane Feuillet , Alexis Finoguenov , Patricia Fofie , Amelia Fraser-McKelvie , Peter M. Frinchaboy , Sebastien Fromenteau , Hai Fu , Lluis Galbany , Rafael A. Garcia , D. A. Garcia-Hernandez , Luis Alberto Garma Oehmichen , Junqiang Ge , Marcio Antonio Geimba Maia , Doug Geisler , Joseph Gelfand , Julian Goddy , Jean-Marc Le Goff , Violeta Gonzalez-Perez , Kathleen Grabowski , Paul Green , Catherine J. Grier , Hong Guo , Julien Guy , Paul Harding , Sten Hasselquist , Adam James Hawken , Christian R. Hayes , Fred Hearty , S. Hekker , David W. Hogg , Jon Holtzman , Danny Horta , Jiamin Hou , Bau-Ching Hsieh , Daniel Huber , Jason A. S. Hunt , J. Ider Chitham , Julie Imig , Mariana Jaber , Camilo Eduardo Jimenez Angel , Jennifer A. Johnson , Amy M. Jones , Henrik Jonsson , Eric Jullo , Yerim Kim , Karen Kinemuchi , Charles C. Kirkpatrick , George W. Kite , Mark Klaene , Jean-Paul Kneib , Juna A. Kollmeier , Hui Kong , Marina Kounkel , Dhanesh Krishnarao , Ivan Lacerna , Ting-Wen Lan , Richard R. Lane , David R. Law , Henry W. Leung , Hannah Lewis , Cheng Li , Jianhui Lian , Lihwai Lin , Dan Long , Penelope Longa-Pena , Britt Lundgren , Brad W. Lyke , J. Ted Mackereth , Chelsea L. MacLeod , Steven R. Majewski , Arturo Manchado , Claudia Maraston , Paul Martini , Thomas Masseron , Karen L. Masters , Savita Mathur , Richard M. McDermid , Andrea Merloni , Michael Merrifield , Szabolcs Meszaros , Andrea Miglio , Dante Minniti , Rebecca Minsley , Takamitsu Miyaji , Faizan Gohar Mohammad , Benoit Mosser , Eva-Maria Mueller , Demitri Muna , Andrea Munoz-Gutierrez , Adam D. Myers , Seshadri Nadathur , Preethi Nair , Kirpal Nandra , Janaina Correa do Nascimento , Rebecca Jean Nevin , Jeffrey A. Newman , David L. Nidever , Christian Nitschelm , Pasquier Noterdaeme , Julia E. O'Connell , Matthew D Olmstead , Daniel Oravetz , Audrey Oravetz , Yeisson Osorio , Zachary J. Pace , Nelson Padilla , Nathalie Palanque-Delabrouille , Pedro A. Palicio , Hsi-An Pan , Kaike Pan , James Parker , Romain Paviot , Sebastien Peirani , Karla Pena Ramrez , Samantha Penny , Will J. Percival , Ismael Perez-Fournon , Ignasi Perez-Rafols , Patrick Petitjean , Matthew M. Pieri , Marc Pinsonneault , Vijith Jacob Poovelil , Joshua Tyler Povick , Abhishek Prakash , Adrian M. Price-Whelan , M. Jordan Raddick , Anand Raichoor , Amy Ray , Sandro Barboza Rembold , Mehdi Rezaie , Rogemar A. Riffel , Rogerio Riffel , Hans-Walter Rix , Annie C. Robin , A. Roman-Lopes , Carlos Roman-Zuniga , Benjamin Rose , Ashley J. Ross , Graziano Rossi , Kate Rowlands , Kate H. R. Rubin , Mara Salvato , Ariel G. Sanchez , Laura Sanchez-Menguiano , Jose R. Sanchez-Gallego , Conor Sayres , Adam Schaefer , Ricardo P. Schiavon , Jaderson S. Schimoia , Edward Schlafly , David Schlegel , Donald P. Schneider , Mathias Schultheis , Axel Schwope , Hee-Jong Seo , Aldo Serenelli , Arman Shafieloo , Shoaib Jamal Shamsi , Zhengyi Shao , Shiyin Shen , Matthew Shetrone , Raphael Shirley , Victor Silva Aguirre , Joshua D. Simon , M. F. Skrutskie , Anze Slosar , Rebecca Smethurst , Jennifer Sobeck , Bernardo Cervantes Sodi , Diogo Souto , David V. Stark , Keivan G. Stassun , Matthias Steinmetz , Dennis Stello , Julianna Stermer , Thaisa Storchi-Bergmann , Alina Streblyanska , Guy S. Stringfellow , Amelia Stutz , Genaro Suarez , Jing Sun , Manuchehr Taghizadeh-Popp , Michael S. Talbot , Jamie Tayar , Aniruddha R. Thakar , Riley Theriault , Daniel Thomas , Zak C. Thomas , Jeremy Tinker , Rita Tojeiro , Hector Hernandez Toledo , Christy A. Tremonti , Nicholas W. Troup , Sarah Tuttle , Eduardo Unda-Sanzana , Marica Valentini , Jaime Vargas-Gonzalez , Mariana Vargas-Magana , Jose Antonio Vazquez-Mata , M. Vivek , David Wake , Yuting Wang , Benjamin Alan Weaver , Anne-Marie Weijmans , Vivienne Wild , John C. Wilson , Robert F. Wilson , Nathan Wolthuis , W. M. Wood-Vasey , Renbin Yan , Meng Yang , Christophe Yeche , Olga Zamora , Pauline Zarrouk , Gail Zasowski , Kai Zhang , Cheng Zhao , Gongbo Zhao , Zheng Zheng , Zheng Zheng , Guangtun Zhu , Hu Zou

The spatial distribution of mono-abundance populations (MAPs, selected in [Fe/H] and [Mg/Fe]) reflect the chemical and structural evolution in a galaxy and impose strong constraints on galaxy formation models. In this paper, we use APOGEE…

The fourth generation of the Sloan Digital Sky Survey (SDSS-IV) began observations in July 2014. It pursues three core programs: APOGEE-2, MaNGA, and eBOSS. In addition, eBOSS contains two major subprograms: TDSS and SPIDERS. This paper…

Astrophysics of Galaxies · Physics 2017-12-20 SDSS Collaboration , Franco D. Albareti , Carlos Allende Prieto , Andres Almeida , Friedrich Anders , Scott Anderson , Brett H. Andrews , Alfonso Aragon-Salamanca , Maria Argudo-Fernandez , Eric Armengaud , Eric Aubourg , Vladimir Avila-Reese , Carles Badenes , Stephen Bailey , Beatriz Barbuy , Kat Barger , Jorge Barrera-Ballesteros , Curtis Bartosz , Sarbani Basu , Dominic Bates , Giuseppina Battaglia , Falk Baumgarten , Julien Baur , Julian Bautista , Timothy C. Beers , Francesco Belfiore , Matthew Bershady , Sara Bertran de Lis , Jonathan C. Bird , Dmitry Bizyaev , Guillermo A. Blanc , Michael Blanton , Michael Blomqvist , Adam S. Bolton , J. Borissova , Jo Bovy , William Nielsen Brandt , Jonathan Brinkmann , Joel R. Brownstein , Kevin Bundy , Etienne Burtin , Nicolas G. Busca , Hugo Orlando Camacho Chavez , M. Cano Diaz , Michele Cappellari , Ricardo Carrera , Yanping Chen , Brian Cherinka , Edmond Cheung , Cristina Chiappini , Drew Chojnowski , Chia-Hsun Chuang , Haeun Chung , Rafael Fernando Cirolini , Nicolas Clerc , Roger E. Cohen , Julia M. Comerford , Johan Comparat , Marie-Claude Cousinou , Kevin Covey , Jeffrey D. Crane , Rupert Croft , Katia Cunha , Luiz da Costa , Gabriele da Silva Ilha , Jeremy Darling , James W. Davidson , Kyle Dawson , Nathan De Lee , Axel de la Macorra , Sylvain de la Torre , Alice Deconto Machado , Timothee Delubac , Aleksandar M. Diamond-Stanic , John Donor , Juan Jose Downes , Niv Drory , Helion du Mas des Bourboux , Cheng Du , Tom Dwelly , Garrett Ebelke , Arthur Eigenbrot , Daniel J. Eisenstein , Yvonne P. Elsworth , Eric Emsellem , Michael Eracleous , Stephanie Escoffier , Michael L. Evans , Jesus Falcon-Barroso , Xiaohui Fan , Ginevra Favole , Emma Fernandez-Alvar , J. G. Fernandez-Trincado , Diane Feuillet , Scott W. Fleming , Andreu Font-Ribera , Gordon Freischlad , Peter Frinchaboy , Hai Fu , Yang Gao , D. A. Garcia-Hernandez , Ana E. Garcia Perez , Rafael A. Garcia , R. Garcia-Dias , Patrick Gaulme , Junqiang Ge , Douglas Geisler , Hector Gil Marin , Bruce Gillespie , Leo Girardi , Daniel Goddard , Yilen Gomez Maqueo Chew , Violeta Gonzalez-Perez , Kathleen Grabowski , Paul Green , Catherine J. Grier , Thomas Grier , Hong Guo , Julien Guy , Alex Hagen , Matt Hall , Paul Harding , R. E. Harley , Sten Hasselquist , Suzanne Hawley , Christian R. Hayes , Fred Hearty , Saskia Hekker , Hector Hernandez Toledo , Shirley Ho , David W. Hogg , Kelly Holley-Bockelmann , Jon A. Holtzman , Parker H. Holzer , Jian Hu , Daniel Huber , Timothy Alan Hutchinson , Ho Seong Hwang , Hector J. Ibarra-Medel , Inese I. Ivans , KeShawn Ivory , Kurt Jaehnig , Trey W. Jensen , Jennifer A. Johnson , Amy Jones , Eric Jullo , T. Kallinger , Karen Kinemuchi , David Kirkby , Mark Klaene , Jean-Paul Kneib , Juna A. Kollmeier , Ivan Lacerna , Richard R. Lane , Dustin Lang , Pierre Laurent , David R. Law , Jean-Marc Le Goff , Alexie Leauthaud , Cheng Li , Ran Li , Chen Li , Niu Li , Fu-Heng Liang , Yu Liang , Marcos Lima , Lihwai Lin , Lin Lin , Yen-Ting Lin , Dan Long , Sara Lucatello , Nicholas MacDonald , Chelsea L. MacLeod , J. Ted Mackereth , Suvrath Mahadevan , Marcio Antonio-Geimba Maia , Roberto Maiolino , Steven R. Majewski , Olena Malanushenko , Nicolas Dullius Mallmann , Arturo Manchado , Claudia Maraston , Rui Marques-Chaves , Inma Martinez Valpuesta , Karen L. Masters , Savita Mathur , Ian D. McGreer , Andrea Merloni , Michael R. Merrifield , Szabolcs Meszaros , Andres Meza , Andrea Miglio , Ivan Minchev , Karan Molaverdikhani , Antonio D. Montero-Dorta , Benoit Mosser , Demitri Muna , Adam Myers , Preethi Nair , Kirpal Nandra , Melissa Ness , Jeffrey A. Newman , Robert C. Nichol , David L. Nidever , Christian Nitschelm , Julia O'Connell , Audrey Oravetz , Nelson Padilla , Nathalie Palanque-Delabrouille , Kaike Pan , John Parejko , Isabelle Paris , John A. Peacock , Sebastien Peirani , Marcos Pellejero-Ibanez , Samantha Penny , Will J. Percival , Jeffrey W. Percival , Ismael Perez-Fournon , Patrick Petitjean , Matthew Pieri , Marc H. Pinsonneault , Alice Pisani , Francisco Prada , Abhishek Prakash , Natalie Price-Jones , M. Jordan Raddick , Mubdi Rahman , Anand Raichoor , Sandro Barboza Rembold , A. M. Reyna , James Rich , Hannah Richstein , Jethro Ridl , Rogerio Riffel , Rogemar A. Riffel , Hans-Walter Rix , Annie C. Robin , Constance M. Rockosi , Sergio Rodriguez-Torres , Thaise S. Rodrigues , Natalie Roe , A. Roman Lopes , Carlos Roman-Zuniga , Ashley J. Ross , Graziano Rossi , John Ruan , Rossana Ruggeri , Jessie C. Runnoe , Salvador Salazar-Albornoz , Mara Salvato , Ariel G. Sanchez , Sebastian F. Sanchez , Jose R. Sanchez-Gallego , Basilio Xavier Santiago , Ricardo Schiavon , Jaderson S. Schimoia , Eddie Schlafly , David J. Schlegel , Donald P. Schneider , Ralph Schoenrich , Mathias Schultheis , Axel Schwope , Hee-Jong Seo , Aldo Serenelli , Branimir Sesar , Zhengyi Shao , Matthew Shetrone , Michael Shull , Victor Silva Aguirre , M. F. Skrutskie , Anže Slosar , Michael Smith , Verne V. Smith , Jennifer Sobeck , Garrett Somers , Diogo Souto , David V. Stark , Keivan G. Stassun , Matthias Steinmetz , Dennis Stello , Thaisa Storchi Bergmann , Michael A. Strauss , Alina Streblyanska , Guy S. Stringfellow , Genaro Suarez , Jing Sun , Manuchehr Taghizadeh-Popp , Baitian Tang , Charling Tao , Jamie Tayar , Mita Tembe , Daniel Thomas , Jeremy Tinker , Rita Tojeiro , Christy Tremonti , Nicholas Troup , Jonathan R. Trump , Eduardo Unda-Sanzana , O. Valenzuela , Remco van den Bosch , Mariana Vargas-Magana , Jose Alberto Vazquez , Sandro Villanova , M. Vivek , Nicole Vogt , David Wake , Rene Walterbos , Yuting Wang , Enci Wang , Benjamin Alan Weaver , Anne-Marie Weijmans , David H. Weinberg , Kyle B. Westfall , David G. Whelan , Eric Wilcots , Vivienne Wild , Rob A. Williams , John Wilson , W. M. Wood-Vasey , Dominika Wylezalek , Ting Xiao , Renbin Yan , Meng Yang , Jason E. Ybarra , Christophe Yeche , Fang-Ting Yuan , Nadia Zakamska , Olga Zamora , Gail Zasowski , Kai Zhang , Cheng Zhao , Gong-Bo Zhao , Zheng Zheng , Zheng Zheng , Zhi-Min Zhou , Guangtun Zhu , Joel C. Zinn , Hu Zou

A precise measure of the mid-infrared interstellar extinction law is crucial to the investigation of the properties of interstellar dust, especially of the grains in the large size end. Based on the stellar parameters derived from the…

Astrophysics of Galaxies · Physics 2016-11-10 Mengyao Xue , Biwei Jiang , Jian Gao , Jiaming Liu , Shu Wang , Aigen Li

Many field stars reside in binaries, and the analysis and interpretation of photometric and spectroscopic surveys must take this into account. We have developed a model to predict how binaries influence the scientific results inferred from…

Solar and Stellar Astrophysics · Physics 2018-04-26 Edita Stonkutė , Ross P. Church , Sofia Feltzing , Jennifer A. Johnson

The Gaia-ESO survey (GES) is now in its fifth and last year of observations, and has already produced tens of thousands of high-quality spectra of stars in all Milky Way components. This paper presents the strategy behind the selection of…

Solar and Stellar Astrophysics · Physics 2017-01-25 E. Pancino , the Gaia-ESO Survey collaboration

The Effelsberg-Bonn HI Survey (EBHIS) is a new 21-cm survey performed with the 100-m telescope at Effelsberg. It covers the whole northern sky out to a redshift of z~0.07 and comprises HI line emission from the Milky Way and the Local…

Instrumentation and Methods for Astrophysics · Physics 2015-12-18 B. Winkel , J. Kerp , L. Flöer , P. M. W. Kalberla , N. Ben Bekhti , R. Keller , D. Lenz

We present new maps of the Milky Way disk showing the distribution of metallicity ([Fe/H]), $\alpha$-element abundances ([Mg/Fe]), and stellar age, using a sample of 66,496 red giant stars from the final data release (DR17) of the Apache…

The Subaru Prime Focus Spectrograph (PFS) is a massively-multiplexed fiber-fed optical and near-infrared 3-arm spectrograph (N_fiber=2400, 380<lambda<1260nm, 1.3 degree diameter FoV), offering unique opportunities in survey astronomy. Here…