A synthetic view on structure and evolution of the Milky Way
Reads0
Chats0
TLDR
In this article, new constraints on evolution parameters obtained from the Besancon model of population synthesis and analysis of optical and near-infrared star counts are presented, in agreement with Hipparcos results and the observed rotation curve.Abstract:
Since the Hipparcos mission and recent large scale surveys in the optical and the near-infrared, new constraints have been obtained on the structure and evolution history of the Milky Way. The population synthesis approach is a useful tool to interpret such data sets and to test scenarios of evolution of the Galaxy. We present here new constraints on evolution parameters obtained from the Besancon model of population synthesis and analysis of optical and near-infrared star counts. The Galactic potential is computed self-consistently, in agreement with Hipparcos results and the observed rotation curve. Constraints are posed on the outer bulge structure, the warped and flared disc, the thick disc and the spheroid populations. The model is tuned to produce reliable predictions in the visible and the near-infrared in wide photometric bands from U to K. Finally, we describe applications such as photometric and astrometric simulations and a new classification tool based on a Bayesian probability estimator, which could be used in the framework of Virtual Observatories. As examples, samples of simulated star counts at different wavelengths and directions are also given.read more
Citations
More filters
Journal ArticleDOI
The Apache Point Observatory Galactic Evolution Experiment (APOGEE)
Steven R. Majewski,Ricardo P. Schiavon,Peter M. Frinchaboy,Carlos Allende Prieto,Carlos Allende Prieto,Robert H. Barkhouser,Dmitry Bizyaev,Dmitry Bizyaev,Basil Blank,Sophia Brunner,Adam Burton,Ricardo Carrera,Ricardo Carrera,S. Drew Chojnowski,S. Drew Chojnowski,Katia Cunha,Courtney R. Epstein,Greg Fitzgerald,Ana E. García Pérez,Ana E. García Pérez,Fred Hearty,Fred Hearty,Chuck Henderson,Jon A. Holtzman,Jennifer A. Johnson,Charles R. Lam,James E. Lawler,Paul Maseman,Szabolcs Mészáros,Szabolcs Mészáros,Szabolcs Mészáros,Matthew J. Nelson,Duy Coung Nguyen,David L. Nidever,David L. Nidever,Marc H. Pinsonneault,Matthew Shetrone,Stephen A. Smee,Verne V. Smith,T. Stolberg,Michael F. Skrutskie,E. Walker,John C. Wilson,Gail Zasowski,Gail Zasowski,Friedrich Anders,Sarbani Basu,Stephane Beland,Michael R. Blanton,Jo Bovy,Jo Bovy,Joel R. Brownstein,Joleen K. Carlberg,Joleen K. Carlberg,William J. Chaplin,William J. Chaplin,Cristina Chiappini,Daniel J. Eisenstein,Yvonne Elsworth,Diane Feuillet,Scott W. Fleming,Scott W. Fleming,Jessica Galbraith-Frew,Rafael A. García,D. Anibal García-Hernández,D. Anibal García-Hernández,Bruce Gillespie,Léo Girardi,James E. Gunn,Sten Hasselquist,Sten Hasselquist,Michael R. Hayden,Saskia Hekker,Saskia Hekker,Inese I. Ivans,Karen Kinemuchi,Mark A. Klaene,Suvrath Mahadevan,Savita Mathur,Benoit Mosser,Demitri Muna,Jeffrey A. Munn,Robert C. Nichol,Robert W. O'Connell,John K. Parejko,Annie C. Robin,H. J. Rocha-Pinto,M. Schultheis,Aldo Serenelli,Neville Shane,Victor Silva Aguirre,Jennifer Sobeck,Benjamin A. Thompson,Nicholas W. Troup,David H. Weinberg,Olga Zamora,Olga Zamora +96 more
TL;DR: In this article, the Hungarian National Research, Development and Innovation Office (K-119517) and Hungarian National Science Foundation (KNFI) have proposed a method to detect the presence of asteroids in Earth's magnetic field.
Journal ArticleDOI
Planet Occurrence within 0.25 AU of Solar-Type Stars from Kepler
Andrew W. Howard,Geoffrey W. Marcy,Stephen T. Bryson,Jon M. Jenkins,Jason F. Rowe,Natalie M. Batalha,William J. Borucki,David G. Koch,Edward W. Dunham,Thomas N. Gautier,Jeffrey Van Cleve,William D. Cochran,David W. Latham,Jack J. Lissauer,Guillermo Torres,Timothy M. Brown,Ronald L. Gilliland,Lars A. Buchhave,Douglas A. Caldwell,Jørgen Christensen-Dalsgaard,Jørgen Christensen-Dalsgaard,David R. Ciardi,Francois Fressin,Michael R. Haas,Steve B. Howell,Hans Kjeldsen,Sara Seager,Leslie A. Rogers,Dimitar Sasselov,Jason H. Steffen,Gibor Basri,David Charbonneau,Jessie L. Christiansen,B. D. Clarke,Andrea K. Dupree,Daniel C. Fabrycky,Debra A. Fischer,Eric B. Ford,Jonathan J. Fortney,Jill Tarter,Forrest R. Girouard,Matthew J. Holman,John Asher Johnson,Todd C. Klaus,P. Machalek,Althea V. Moorhead,Robert C. Morehead,Darin Ragozzine,Peter Tenenbaum,Joseph D. Twicken,Samuel N. Quinn,Howard Isaacson,Avi Shporer,Avi Shporer,Philip W. Lucas,Lucianne M. Walkowicz,William F. Welsh,Alan P. Boss,Edna DeVore,Alan Gould,Jeffrey C. Smith,Robert L. Morris,Andrej Prsa,Timothy D. Morton,Martin Still,Susan E. Thompson,Fergal Mullally,Michael Endl,Phillip J. MacQueen +68 more
TL;DR: In this paper, the authors report the distribution of planets as a function of planet radius, orbital period, and stellar effective temperature for orbital periods less than 50 days around solar-type (GK) stars.
Journal ArticleDOI
The false positive rate of kepler and the occurrence of planets
Francois Fressin,Guillermo Torres,David Charbonneau,Stephen T. Bryson,Jessie L. Christiansen,Courtney D. Dressing,Jon M. Jenkins,Lucianne M. Walkowicz,Natalie M. Batalha +8 more
TL;DR: In this paper, the authors derived a prescription for the signal recovery rate of Kepler that enables a good match to both the KOI size and orbital period distribution, as well as their signal-to-noise distribution.
Journal ArticleDOI
The Galaxy in Context: Structural, Kinematic, and Integrated Properties
TL;DR: In this paper, the authors review the key integrated, structural and kinematic parameters of the Galaxy, and point to uncertainties as well as directions for future progress, and show that the Galaxy is a luminous (L⋆) barred spiral with a central box/peanut bulge, a dominant disk, and a diffuse stellar halo.
Journal ArticleDOI
KiDS-450: cosmological parameter constraints from tomographic weak gravitational lensing
Hendrik Hildebrandt,Massimo Viola,Catherine Heymans,Shahab Joudaki,Konrad Kuijken,Chris Blake,Thomas Erben,Benjamin Joachimi,Dominik Klaes,Lance Miller,Carole Morrison,R. Nakajima,G. A. Verdoes Kleijn,Alexandra Amon,Ami Choi,Giovanni Covone,J. T. A. de Jong,Andrej Dvornik,I. Fenech Conti,Aniello Grado,Joachim Harnois-Déraps,Joachim Harnois-Déraps,Ricardo Herbonnet,Henk Hoekstra,Fabian Köhlinger,John McFarland,Alexander Mead,Julian Merten,Nicola R. Napolitano,John A. Peacock,Mario Radovich,Petra Schneider,Patrick Simon,Edwin A. Valentijn,J. L. van den Busch,E. van Uitert,L. van Waerbeke +36 more
TL;DR: In this article, the authors present cosmological parameter constraints from a tomographic weak gravitational lensing analysis of ~450deg$^2$ of imaging data from the Kilo Degree Survey (KiDS) for a flat Lambda$CDM cosmology with a prior on $H_0$ that encompasses the most recent direct measurements.
References
More filters
Journal ArticleDOI
Maps of Dust Infrared Emission for Use in Estimation of Reddening and Cosmic Microwave Background Radiation Foregrounds
TL;DR: In this article, a reprocessed composite of the COBE/DIRBE and IRAS/ISSA maps, with the zodiacal foreground and confirmed point sources removed, is presented.
Journal ArticleDOI
Maps of Dust IR Emission for Use in Estimation of Reddening and CMBR Foregrounds
TL;DR: In this paper, the authors presented a reprocessed composite of the COBE/DIRBE and IRAS/ISSA maps, with the zodiacal foreground and confirmed point sources removed.
Journal ArticleDOI
The relationship between infrared, optical, and ultraviolet extinction
TL;DR: In this article, the average extinction law over the 3.5 micron to 0.125 wavelength range was derived for both diffuse and dense regions of the interstellar medium. And the validity of the law over a large wavelength interval suggests that the processes which modify the sizes and compositions of grains are stochastic in nature.
Journal ArticleDOI
Evidence from the motions of old stars that the Galaxy collapsed.
Journal ArticleDOI
Interstellar dust and extinction
TL;DR: The ultraviolet (UV) region of the spectrum has been crucial in providing information on the nature of the material and size distribution of the particles of interstellar dust before there were any measurements of the UV properties of interstellar extinction as mentioned in this paper.
Related Papers (5)
Maps of Dust Infrared Emission for Use in Estimation of Reddening and Cosmic Microwave Background Radiation Foregrounds
Maps of Dust IR Emission for Use in Estimation of Reddening and CMBR Foregrounds
The Two Micron All Sky Survey (2MASS)
Michael F. Skrutskie,Michael F. Skrutskie,Roc M. Cutri,R. Stiening,Martin D. Weinberg,Stephen E. Schneider,John M. Carpenter,Chas Beichman,R. Capps,T. Chester,J. Elias,John P. Huchra,James Liebert,C. Lonsdale,David G. Monet,Stephan D. Price,Patrick Seitzer,Thomas H. Jarrett,J. D. Kirkpatrick,John E. Gizis,E. Howard,T. Evans,John W. Fowler,L. Fullmer,Robert L. Hurt,R. M. Light,E. L. Kopan,K. A. Marsh,H. McCallon,R. Tam,S. D. Van Dyk,S. Wheelock +31 more