Related papers: Speckle Interferometry of 25 Gaia Two-Parameter Po…

Quasars with Proper Motions and the Link to Double and Multiple AGNs

Gaia used a large sample of photometrically selected active galactic nuclei (AGNs) and quasars to remove the residual spin of its global proper motion system in order to achieve a maximally inertial reference frame. A small fraction of…

Astrophysics of Galaxies · Physics 2022-07-06 Valeri V. Makarov , Nathan J. Secrest

Hunting Black Holes with Gaia

We predict the number of black holes with stellar companions that are potentially detectable with Gaia astrometry over the course of its five-year mission. Our model estimates that nearly 2$\times$10$^5$ astrometric binaries hosting black…

High Energy Astrophysical Phenomena · Physics 2017-07-26 Natalie Mashian , Abraham Loeb

Gaia Data Release 1. Testing the parallaxes with local Cepheids and RR Lyrae stars

Parallaxes for 331 classical Cepheids, 31 Type II Cepheids and 364 RR Lyrae stars in common between Gaia and the Hipparcos and Tycho-2 catalogues are published in Gaia Data Release 1 (DR1) as part of the Tycho-Gaia Astrometric Solution…

Solar and Stellar Astrophysics · Physics 2017-09-20 Gaia Collaboration , G. Clementini , L. Eyer , V. Ripepi , M. Marconi , T. Muraveva , A. Garofalo , L. M. Sarro , M. Palmer , X. Luri , R. Molinaro , L. Rimoldini , L. Szabados , I. Musella , R. I. Anderson , T. Prusti , J. H. J. de Bruijne , A. G. A. Brown , A. Vallenari , C. Babusiaux , C. A. L. Bailer-Jones , U. Bastian , M. Biermann , D. W. Evans , F. Jansen , C. Jordi , S. A. Klioner , U. Lammers , L. Lindegren , F. Mignard , C. Panem , D. Pourbaix , S. Randich , P. Sartoretti , H. I. Siddiqui , C. Soubiran , V. Valette , F. van Leeuwen , N. A. Walton , C. Aerts , F. Arenou , M. Cropper , R. Drimmel , E. Høg , D. Katz , M. G. Lattanzi , W. O'Mullane , E. K. Grebel , A. D. Holland , C. Huc , X. Passot , M. Perryman , L. Bramante , C. Cacciari , J. Castañeda , L. Chaoul , N. Cheek , F. De Angeli , C. Fabricius , R. Guerra , J. Hernández , A. Jean-Azntoine-Piccolo , E. Masana , R. Messineo , N. Mowlavi , K. Nienartowicz , D. Ordóñez-Blanco , P. Panuzzo , J. Portell , P. J. Richards , M. Riello , G. M. Seabroke , P. Tanga , F. Thévenin , J. Torra , S. G. Els , G. Gracia-Abril , G. Comoretto , M. Garcia-Reinaldos , T. Lock , E. Mercier , M. Altmann , R. Andrae , T. L. Astraatmadja , I. Bellas-Velidis , K. Benson , J. Berthier , R. Blomme , G. Busso , B. Carry , A. Cellino , S. Cowell , O. Creevey , J. Cuypers , M. Davidson , J. De Ridder , A. de Torres , L. Delchambre , A. Dell'Oro , C. Ducourant , Y. Frémat , M. García-Torres , E. Gosset , J. -L. Halbwachs , N. C. Hambly , D. L. Harrison , M. Hauser , D. Hestroffer , S. T. Hodgkin , H. E. Huckle , A. Hutton , G. Jasniewicz , S. Jordan , M. Kontizas , A. J. Korn , A. C. Lanzafame , M. Manteiga , A. Moitinho , K. Muinonen , J. Osinde , E. Pancino , T. Pauwels , J. -M. Petit , A. Recio-Blanco , A. C. Robin , C. Siopis , M. Smith , K. W. Smith , A. Sozzetti , W. Thuillot , W. van Reeven , Y. Viala , U. Abbas , A. Abreu Aramburu , S. Accart , J. J. Aguado , P. M. Allan , W. Allasia , G. Altavilla , M. A. Álvarez , J. Alves , A. H. Andrei , E. Anglada Varela , E. Antiche , T. Antoja , S. Antón , B. Arcay , N. Bach , S. G. Baker , L. Balaguer-Núñez , C. Barache , C. Barata , A. Barbier , F. Barblan , D. Barrado y Navascués , M. Barros , M. A. Barstow , U. Becciani , M. Bellazzini , A. Bello García , V. Belokurov , P. Bendjoya , A. Berihuete , L. Bianchi , O. Bienaymé , F. Billebaud , N. Blagorodnova , S. Blanco-Cuaresma , T. Boch , A. Bombrun , R. Borrachero , S. Bouquillon , G. Bourda , H. Bouy , A. Bragaglia , M. A. Breddels , N. Brouillet , T. Brüsemeister , B. Bucciarelli , P. Burgess , R. Burgon , A. Burlacu , D. Busonero , R. Buzzi , E. Caffau , J. Cambras , H. Campbell , R. Cancelliere , T. Cantat-Gaudin , T. Carlucci , J. M. Carrasco , M. Castellani , P. Charlot , J. Charnas , A. Chiavassa , M. Clotet , G. Cocozza , R. S. Collins , G. Costigan , F. Crifo , N. J. G. Cross , M. Crosta , C. Crowley , C. Dafonte , Y. Damerdji , A. Dapergolas , P. David , M. David , P. De Cat , F. de Felice , P. de Laverny , F. De Luise , R. De March , R. de Souza , J. Debosscher , E. del Pozo , M. Delbo , A. Delgado , H. E. Delgado , P. Di Matteo , S. Diakite , E. Distefano , C. Dolding , S. Dos Anjos , P. Drazinos , J. Durán , Y. Dzigan , B. Edvardsson , H. Enke , N. W. Evans , G. Eynard Bontemps , C. Fabre , M. Fabrizio , S. Faigler , A. J. Falcão , M. Farràs Casas , L. Federici , G. Fedorets , J. Fernández-Hernánde , P. Fernique , A. Fienga , F. Figueras , F. Filippi , K. Findeisen , A. Fonti , M. Fouesneau , E. Fraile , M. Fraser , J. Fuchs , M. Gai , S. Galleti , L. Galluccio , D. Garabato , F. García-Sedano , N. Garralda , P. Gavras , J. Gerssen , R. Geyer , G. Gilmore , S. Girona , G. Giuffrida , M. Gomes , A. González-Marcos , J. González-Núñez , J. J. González-Vidal , M. Granvik , A. Guerrier , P. Guillout , J. Guiraud , A. Gúrpide , R. Gutiérrez-Sánchez , L. P. Guy , R. Haigron , D. Hatzidimitriou , M. Haywood , U. Heiter , A. Helmi , D. Hobbs , W. Hofmann , B. Holl , G. Holland , J. A. S. Hunt , A. Hypki , V. Icardi , M. Irwin , G. Jevardat de Fombelle , P. Jofré , P. G. Jonker , A. Jorissen , F. Julbe , A. Karampelas , A. Kochoska , R. Kohley , K. Kolenberg , E. Kontizas , S. E. Koposov , G. Kordopatis , P. Koubsky , A. Krone-Martins , M. Kudryashova , I. Kull , R. K. Bachchan , F. Lacoste-Seris , A. F. Lanza , J. -B. Lavigne , C. Le Poncin-Lafitte , Y. Lebreton , T. Lebzelter , S. Leccia , N. Leclerc , I. Lecoeur-Taibi , V. Lemaitre , H. Lenhardt , F. Leroux , S. Liao , E. Licata , H. E. P. Lindstrøm , T. A. Lister , E. Livanou , A. Lobel , W. Löffler , M. López , D. Lorenz , I. MacDonald , T. Magalhães Fernandes , S. Managau , R. G. Mann , G. Mantelet , O. Marchal , J. M. Marchant , S. Marinoni , P. M. Marrese , G. Marschalkó , D. J. Marshall , J. M. Martín-Fleitas , M. Martino , N. Mary , G. Matijevič , T. Mazeh , P. J. McMillan , S. Messina , D. Michalik , N. R. Millar , B. M. H. Miranda , D. Molina , M. Molinaro , L. Molnár , M. Moniez , P. Montegriffo , R. Mor , A. Mora , R. Morbidelli , T. Morel , S. Morgenthaler , D. Morris , A. F. Mulone , J. Narbonne , G. Nelemans , L. Nicastro , L. Noval , C. Ordénovic , J. Ordieres-Meré , P. Osborne , C. Pagani , I. Pagano , F. Pailler , H. Palacin , L. Palaversa , P. Parsons , M. Pecoraro , R. Pedrosa , H. Pentikäinen , B. Pichon , A. M. Piersimoni , F. -X. Pineau , E. Plachy , G. Plum , E. Poujoulet , A. Prša , L. Pulone , S. Ragaini , S. Rago , N. Rambaux , M. Ramos-Lerate , P. Ranalli , G. Rauw , A. Read , S. Regibo , C. Reylé , R. A. Ribeiro , A. Riva , G. Rixon , M. Roelens , M. Romero-Gómez , N. Rowell , F. Royer , L. Ruiz-Dern , G. Sadowski , T. Sagristà Sellés , J. Sahlmann , J. Salgado , E. Salguero , M. Sarasso , H. Savietto , M. Schultheis , E. Sciacca , M. Segol , J. C. Segovia , D. Segransan , I-C. Shih , R. Smareglia , R. L. Smart , E. Solano , F. Solitro , R. Sordo , S. Soria Nieto , J. Souchay , A. Spagna , F. Spoto , U. Stampa , I. A. Steele , H. Steidelmüller , C. A. Stephenson , H. Stoev , F. F. Suess , M. Süveges , J. Surdej , E. Szegedi-Elek , D. Tapiador , F. Taris , G. Tauran , M. B. Taylor , R. Teixeira , D. Terrett , B. Tingley , S. C. Trager , C. Turon , A. Ulla , E. Utrilla , G. Valentini , A. van Elteren , E. Van Hemelryck , M. van Leeuwen , M. Varadi , A. Vecchiato , J. Veljanoski , T. Via , D. Vicente , S. Vogt , H. Voss , V. Votruba , S. Voutsinas , G. Walmsley , M. Weiler , K. Weingrill , T. Wevers , Ł. Wyrzykowski , A. Yoldas , M. Žerjal , S. Zucker , C. Zurbach , T. Zwitter , A. Alecu , M. Allen , C. Allende Prieto , A. Amorim , G. Anglada-Escudé , V. Arsenijevic , S. Azaz , P. Balm , M. Beck , H. -H. Bernstein , L. Bigot , A. Bijaoui , C. Blasco , M. Bonfigli , G. Bono , S. Boudreault , A. Bressan , S. Brown , P. -M. Brunet , P. Bunclark , R. Buonanno , A. G. Butkevich , C. Carret , C. Carrion , L. Chemin , F. Chéreau , L. Corcione , E. Darmigny , K. S. de Boer , P. de Teodoro , P. T. de Zeeuw , C. Delle Luche , C. D. Domingues , P. Dubath , F. Fodor , B. Frézouls , A. Fries , D. Fustes , D. Fyfe , E. Gallardo , J. Gallegos , D. Gardiol , M. Gebran , A. Gomboc , A. Gómez , E. Grux , A. Gueguen , A. Heyrovsky , J. Hoar , G. Iannicola , Y. Isasi Parache , A. -M. Janotto , E. Joliet , A. Jonckheere , R. Keil , D. -W. Kim , P. Klagyivik , J. Klar , J. Knude , O. Kochukhov , I. Kolka , J. Kos , A. Kutka , V. Lainey , D. LeBouquin , C. Liu , D. Loreggia , V. V. Makarov , M. G. Marseille , C. Martayan , O. Martinez-Rubi , B. Massart , F. Meynadier , S. Mignot , U. Munari , A. -T. Nguyen , T. Nordlander , K. S. O'Flaherty , P. Ocvirk , A. Olias Sanz , P. Ortiz , J. Osorio , D. Oszkiewicz , A. Ouzounis , P. Park , E. Pasquato , C. Peltzer , J. Peralta , F. Péturaud , T. Pieniluoma , E. Pigozzi , J. Poels , G. Prat , T. Prod'homme , F. Raison , J. M. Rebordao , D. Risquez , B. Rocca-Volmerange , S. Rosen , M. I. Ruiz-Fuertes , F. Russo , S. Sembay , I. Serraller Vizcaino , A. Short , A. Siebert , H. Silva , D. Sinachopoulos , E. Slezak , M. Soffel , D. Sosnowska , V. Straižys , M. ter Linden , D. Terrell , S. Theil , C. Tiede , L. Troisi , P. Tsalmantza , D. Tur , M. Vaccari , F. Vachier , P. Valles , W. Van Hamme , L. Veltz , J. Virtanen , J. -M. Wallut , R. Wichmann , M. I. Wilkinson , H. Ziaeepour , S. Zschocke

Combining Gaia and GRAVITY: Characterising five new Directly Detected Substellar Companions

Precise mass constraints are vital for the characterisation of brown dwarfs and exoplanets. Here we present how the combination of data obtained by Gaia and GRAVITY can help enlarge the sample of substellar companions with measured…

Earth and Planetary Astrophysics · Physics 2024-08-07 T. O. Winterhalder , S. Lacour , A. Mérand , A. -L. Maire , J. Kammerer , T. Stolker , N. Pourré , C. Babusiaux , R. Abuter , A. Amorim , R. Asensio-Torres , W. O. Balmer , M. Benisty , J. -P. Berger , H. Beust , S. Blunt , A. Boccaletti , M. Bonnefoy , H. Bonnet , M. S. Bordoni , G. Bourdarot , W. Brandner , F. Cantalloube , P. Caselli , B. Charnay , G. Chauvin , A. Chavez , E. Choquet , V. Christiaens , Y. Clénet , V. Coudé du Foresto , A. Cridland , R. Davies , R. Dembet , J. Dexter , A. Drescher , G. Duvert , A. Eckart , F. Eisenhauer , N. M. Förster Schreiber , P. Garcia , R. Garcia Lopez , T. Gardner , E. Gendron , R. Genzel , S. Gillessen , J. H. Girard , S. Grant , X. Haubois , G. Heißel , Th. Henning , S. Hinkley , S. Hippler , M. Houllé , Z. Hubert , L. Jocou , M. Keppler , P. Kervella , L. Kreidberg , N. T. Kurtovic , A. -M. Lagrange , V. Lapeyrère , J. -B. Le Bouquin , D. Lutz , F. Mang , G. -D. Marleau , P. Mollière , J. D. Monnier , C. Mordasini , D. Mouillet , E. Nasedkin , M. Nowak , T. Ott , G. P. P. L. Otten , C. Paladini , T. Paumard , K. Perraut , G. Perrin , O. Pfuhl , L. Pueyo , D. C. Ribeiro , E. Rickman , Z. Rustamkulov , J. Shangguan , T. Shimizu , D. Sing , J. Stadler , O. Straub , C. Straubmeier , E. Sturm , L. J. Tacconi , E. F. van Dishoeck , A. Vigan , F. Vincent , S. D. von Fellenberg , J. J. Wang , F. Widmann , J. Woillez , Ş. Yazıcı

Observations of Binary Stars with the Differential Speckle Survey Instrument. VI. Measures During 2014 at the Discovery Channel Telescope

We present the results of 938 speckle measures of double stars and suspected double stars drawn mainly from the Hipparcos Catalogue, as well as 208 observations where no companion was noted. One hundred fourteen pairs have been resolved for…

Solar and Stellar Astrophysics · Physics 2015-10-28 Elliott P. Horch , Gerard T. van Belle , James W. Davidson, , Lindsay A. Ciastko , Mark E. Everett , Karen S. Bjorkman

Validation of Gaia DR3 orbital and acceleration solutions with hierarchical triples

Using data from Gaia DR3, we construct a sample of 14,791 gravitationally bound wide pairs in which one of the components is an unresolved binary with an astrometric orbital or acceleration solution. These systems are hierarchical triples,…

Solar and Stellar Astrophysics · Physics 2024-10-02 Pranav Nagarajan , Kareem El-Badry

An insight into the flux calibration of Gaia G-band images and BP/RP spectrophotometry

The Gaia mission is described, focussing on those technical aspects that are necessary to understand the details of its external (absolute) flux calibration. On board of Gaia there will be two (spectro)photometers, the blue one (BP) and the…

Instrumentation and Methods for Astrophysics · Physics 2010-09-10 E. Pancino

paired: A Statistical Framework for Detecting Stellar Binarity with Gaia RVs. I. Sensitivity to Unresolved Binaries

Data Release 3 (DR3) from the Gaia Mission includes radial velocity measurements of over 33 million targets. Among many scientific applications, the overlap of this stellar sample with targeted exoplanet transit survey stars presents an…

Earth and Planetary Astrophysics · Physics 2024-11-06 Quadry Chance , Daniel Foreman-Mackey , Sarah Ballard , Andrew Casey , Trevor David , Adrian Price-Whelan

Enabling Gaia observations of naked-eye stars

The ESA Gaia space astrometry mission will perform an all-sky survey of stellar objects complete in the nominal magnitude range G = [6.0 - 20.0]. The stars with G lower than 6.0, i.e. those visible to the unaided human eye, would thus not…

Instrumentation and Methods for Astrophysics · Physics 2014-08-14 J. Martín-Fleitas , A. Mora , J. Sahlmann , R. Kohley , B. Massart , J. L'hermitte , M. Le Roy , P. Paulet

Multiplicity of stars with planets in the solar neighbourhood

- Aims: We intended to quantify the impact of stellar multiplicity on the presence and properties of exoplanets. - Methods: We investigated all exoplanet host stars at less than 100 pc using the latest astrometric data from Gaia DR3 and…

Solar and Stellar Astrophysics · Physics 2024-09-25 J. González-Payo , J. A. Caballero , J. Gorgas , M. Cortés-Contreras , M. -C. Gálvez-Ortiz , C. Cifuentes

Distances to Galactic OB-stars: Photometry vs. Parallax

For application to surveys of interstellar matter and Galactic structure, we compute new spectrophotometric distances to 139 OB stars frequently used as background targets for UV spectroscopy. Many of these stars have updated spectral types…

Solar and Stellar Astrophysics · Physics 2019-09-25 J. Michael Shull , Charles W. Danforth

Gaia Data Release 3: Analysis of the Gaia BP/RP spectra using the General Stellar Parameterizer from Photometry

We present the General Stellar Parameterizer from Photometry (GSP-Phot), which is part of the astrophysical parameters inference system (Apsis). GSP-Phot is designed to produce a homogeneous catalogue of parameters for hundreds of millions…

Solar and Stellar Astrophysics · Physics 2022-06-14 R. Andrae , M. Fouesneau , R. Sordo , C. A. L. Bailer-Jones , T. E. Dharmawardena , J. Rybizki , F. De Angeli , H. E. P. Lindstrøm , D. J. Marshall , R. Drimmel , A. J. Korn , C. Soubiran , N. Brouillet , L. Casamiquela , H. -W. Rix , A. Abreu Aramburu , M. A. Álvarez , J. Bakker , I. Bellas-Velidis , A. Bijaoui , E. Brugaletta , A. Burlacu , R. Carballo , L. Chaoul , A. Chiavassa , G. Contursi , W. J. Cooper , O. L. Creevey , C. Dafonte , A. Dapergolas , P. de Laverny , L. Delchambre , C. Demouchy , B. Edvardsson , Y. Frémat , D. Garabato , P. García-Lario , M. García-Torres , A. Gavel , A. Gomez , I. González-Santamaría , D. Hatzidimitriou , U. Heiter , A. Jean-Antoine Piccolo , M. Kontizas , G. Kordopatis , A. C. Lanzafame , Y. Lebreton , E. L. Licata , E. Livanou , A. Lobel , A. Lorca , A. Magdaleno Romeo , M. Manteiga , F. Marocco , N. Mary , C. Nicolas , C. Ordenovic , F. Pailler , P. A. Palicio , L. Pallas-Quintela , C. Panem , B. Pichon , E. Poggio , A. Recio-Blanco , F. Riclet , C. Robin , R. Santoveña , L. M. Sarro , M. S. Schultheis , M. Segol , A. Silvelo , I. Slezak , R. L. Smart , M. Süveges , F. Thévenin , G. Torralba Elipe , A. Ulla , E. Utrilla , A. Vallenari , E. van Dillen , H. Zhao , J. Zorec

Estimating distances from parallaxes. VI: A method for inferring distances and transverse velocities from parallaxes and proper motions demonstrated on Gaia Data Release 3

The accuracy of stellar distances inferred purely from parallaxes degrades rapidly with distance. Proper motion measurements, when combined with some idea of typical velocities, provide independent information on stellar distances. Here I…

Astrophysics of Galaxies · Physics 2023-11-02 C. A. L. Bailer-Jones

Double-blind test program for astrometric planet detection with Gaia

We use detailed simulations of the Gaia observations of synthetic planetary systems and develop and utilize independent software codes in double-blind mode to analyze the data, including statistical tools for planet detection and different…

Astrophysics · Physics 2009-11-13 S. Casertano , M. G. Lattanzi , A. Sozzetti , A. Spagna , S. Jancart , R. Morbidelli , R. Pannunzio , D. Pourbaix , D. Queloz

Gaia DR2 in 6D: Searching for the fastest stars in the Galaxy

We search for the fastest stars in the subset of stars with radial velocity measurements of the second data release (DR2) of the European Space Agency mission Gaia. Starting from the observed positions, parallaxes, proper motions, and…

Astrophysics of Galaxies · Physics 2018-09-26 T. Marchetti , E. M. Rossi , A. G. A. Brown

Speckle interferometry at SOAR in 2018

The results of speckle interferometric observations at the 4.1 m Southern Astrophysical Research Telescope (SOAR) in 2018 are given, totaling 3097 measurements of 2427 resolved pairs with separations from 11 mas to 5.9" (median 0.15",…

Solar and Stellar Astrophysics · Physics 2019-07-17 Andrei Tokovinin , Brian D. Mason , Rene A. Mendez , Elliott P. Horch , Cesar Briceno

Masses of the components of SB2 binaries observed with Gaia. I. Selection of the sample and mass ratios of 20 new SB2s discovered with Sophie

In anticipation of the Gaia astrometric mission, a large sample of spectroscopic binaries is being observed since 2010 with the Sophie spectrograph at the Haute--Provence Observatory. Our aim is to derive the orbital elements of…

Solar and Stellar Astrophysics · Physics 2015-06-22 Jean-Louis Halbwachs , Frédéric Arenou , Dimitri Pourbaix , Benoît Famaey , Patrick Guillout , Yveline Lebreton , Jean-Baptiste Salomon , Lev Tal-Or , Rodrigo Ibata , Tsevi Mazeh

One star, two star, red star, blue star: an updated planetary nebula central star distance catalogue from Gaia EDR3

Context. Planetary nebulae (PNe) are a brief but important phase of stellar evolution. The study of Galactic PNe has historically been hampered by uncertain distances, but the parallaxes of PN central stars (CSPNe) measured by Gaia are…

Solar and Stellar Astrophysics · Physics 2021-12-11 N. Chornay , N. A. Walton

Detecting and Characterizing Companions with a Calibrated Gaia DR2, DR3, and Hipparcos Catalog (G23H)

Gaia DR4 epoch astrometry will enable the detection of thousands of exoplanets through astrometric motion. Here, we present a composite catalog and modeling framework that extracts the maximum information from existing Hipparcos and Gaia…

Earth and Planetary Astrophysics · Physics 2026-02-03 William Thompson , Dori Blakely , Jerry W. Xuan , Simon Blouin , Jingwen Zhang , Doug Johnstone , Jean-Baptiste Ruffio , Eric Nielsen , Jessica Speedie , Brendan P. Bowler , Alexandre Bouchard-Côté , Kyle Franson , Sarah Blunt , William Roberson , Ryan Cloutier , Andre Fogal , Kaitlyn Hessel , Christian Marois , Alexandra Rochon

Detecting stars, galaxies, and asteroids with Gaia

(Abridged) Gaia aims to make a 3-dimensional map of 1,000 million stars in our Milky Way to unravel its kinematical, dynamical, and chemical structure and evolution. Gaia's on-board detection software discriminates stars from spurious…

Instrumentation and Methods for Astrophysics · Physics 2015-04-01 J. H. J. de Bruijne , M. Allen , S. Azaz , A. Krone-Martins , T. Prod'homme , D. Hestroffer