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We simulate the scientific performance of the Wide-Field Infrared Survey Telescope (WFIRST) High Latitude Survey (HLS) on dark energy and modified gravity. The 1.6 year HLS Reference survey is currently envisioned to image 2000 deg$^2$ in…

Traditional approaches to measuring the stellar mass function (MF) are fundamentally limited because objects are detected based on their luminosity, not their mass. These methods are thereby restricted to luminous and relatively nearby…

Astrophysics · Physics 2009-10-28 Andrew Gould

WFIRST microlensing observations will return high-precision parallaxes, sigma(pi) < 0.3 microarcsec, for the roughly 1 million stars with H<14 in its 2.8 deg^2 field toward the Galactic bulge. Combined with its 40,000 epochs of high…

Solar and Stellar Astrophysics · Physics 2017-01-18 A. Gould , D. Huber , M. Penny , D. Stello

The Near-InfraRed Planet Searcher or NIRPS is a precision radial velocity spectrograph developed through collaborative efforts among laboratories in Switzerland, Canada, Brazil, France, Portugal and Spain. NIRPS extends to the 0.98-1.8…

Instrumentation and Methods for Astrophysics · Physics 2024-06-14 Étienne Artigau , François Bouchy , René Doyon , Frédérique Baron , Lison Malo , François Wildi , Franceso Pepe , Neil J. Cook , Simon Thibault , Vladimir Reshetov , Xavier Dumusque , Christophe Lovis , Danuta Sosnowska , Bruno L. Canto Martins , Jose Renan De Medeiros , Xavier Delfosse , Nuno Santos , Rafael Rebolo , Manuel Abreu , Guillaume Allain , Romain Allart , Hugues Auger , Susana Barros , Luc Bazinet , Nicolas Blind , Isabelle Boisse , Xavier Bonfils , Vincent Bourrier , Sébastien Bovay , Christopher Broeg , Denis Brousseau , Vincent Bruniquel , Alexandre Cabral , Charles Cadieux , Andres Carmona , Yann Carteret , Zalpha Challita , Bruno Chazelas , Ryan Cloutier , João Coelho , Marion Cointepas , Uriel Conod , Nicolas Cowan , Eduardo Cristo , João Gomes da Silva , Laurie Dauplaise , Roseane de Lima Gomes , Elisa Delgado-Mena , David Ehrenreich , João Faria , Pedro Figueira , Thierry Forveille , Yolanda Frensch , Jonathan Gagné , Frédéric Genest , Ludovic Genolet , Jonay I. González Hernández , Félix Gracia Témich , Nolan Grieves , Olivier Hernandez , Melissa J. Hobson , Jens Hoeijmakers , Dan Kerley , Vigneshwaran Krishnamurthy , David Lafrenière , Pierrot Lamontagne , Pierre Larue , Henry Leaf , Izan C. Leão , Olivia Lim , Gaspare Lo Curto , Allan M. Martins , Claudio Melo , Yuri S. Messias , Lucile Mignon , Leslie Moranta , Christoph Mordasini , Khaled Al Moulla , Dany Mounzer , Alexandrine L'Heureux , Nicola Nari , Louise Nielsen , Ares Osborn , Léna Parc , Luca Pasquini , Vera M. Passegger , Stefan Pelletier , Céline Peroux , Caroline Piaulet , Mykhaylo Plotnykov , Anne-Sophie Poulin-Girard , José Luis Rasilla , Jonathan Saint-Antoine , Mirsad Sarajlic , Alex Segovia , Julia Seidel , Damien Ségransan , Ana Rita Costa Silva , Avidaan Srivastava , Atanas K. Stefanov , Alejandro Suárez Mascareño , Michael Sordet , Márcio A. Teixeira , Stéphane Udry , Diana Valencia , Philippe Vallée , Thomas Vandal , Valentina Vaulato , Gregg Wade , Joost P. Wardenier , Bachar Wehbé , Drew Weisserman , Ivan Wevers , Gérard Zins

We used the data from the Spitzer Legacy Infrared Mid-Plane Survey Extraordinaire (GLIMPSE) to investigate the mid-infrared (MIR) properties of planetary nebulae (PNs) and PN candidates. In previous studies of GLIMPSE I& II data, we have…

Solar and Stellar Astrophysics · Physics 2015-06-03 Yong Zhang , Chih-Hao Hsia , Sun Kwok

Characterizing the growth of supermassive Black Holes (SMBHs) is critical to the evolution of galaxies, however the majority of this activity is obscured, rendering traditional tracers of active SMBHs, such as in the restframe optical/UV,…

Astrophysics of Galaxies · Physics 2025-03-17 Fergus R. Donnan , Dimitra Rigopoulou , Ismael García-Bernete , Laura Bisigello , Susanne Aalto

We compare H-alpha, radio continuum, and Spitzer Space Telescope (SST) images of 58 planetary nebulae (PNe) recently discovered by the Macquarie-AAO-Strasbo- urg H-alpha PN Project (MASH) of the SuperCOSMOS H-alpha Survey. Using InfraRed…

FIRST is a prototype instrument built to demonstrate the capabilities of the pupil remapping technique, using single-mode fibers and working at visible wavelengths. We report on observations of the binary system Capella at three epochs over…

Instrumentation and Methods for Astrophysics · Physics 2015-06-17 E. Huby , G. Duchêne , F. Marchis , S. Lacour , G. Perrin , T. Kotani , É. Choquet , E. L. Gates , O. Lai , F. Allard

By combining SIM observations with ground-based photometry, one can completely solve microlensing events seen toward the Galactic bulge. One could measure the mass, distance, and transverse velocity of ~100 lenses to ~5% precision in only…

Astrophysics · Physics 2007-05-23 Andrew Gould , Samir Salim

The proposed infrared space interferometry mission Darwin has two main aims: (i) to detect and characterize exo-planets similar to the Earth, and (ii) to carry out astrophysical imaging in the wavelength range 6 - 20 micron at a sensitivity…

Astrophysics · Physics 2007-05-23 H. J. A. Rottgering , L. d'Arcio , C. Eiroa , I. Labbe , G. Rudnick

We developed a parametric Galactic model toward the Galactic bulge by fitting to spatial distributions of the Gaia DR2 disk velocity, VVV proper motion, BRAVA radial velocity, OGLE-III red clump star count, and OGLE-IV star count and…

Astrophysics of Galaxies · Physics 2021-08-25 Naoki Koshimoto , Junichi Baba , David P. Bennett

Ground based low frequency radio interferometers have been developed in the last decade and are providing the scientific community with high quality observations. Conversely, current radioastronomy instruments in space have a poor angular…

Because of their limited angular resolution, far-infrared telescopes are usually affected by confusion phenomenon. Since several galaxies can be located in the same instrumental beam, only the brightest objects emerge from the fluctuations…

The idea behind FIRST (Fibered Imager foR a Single Telescope) is to use single-mode fibers to combine multiple apertures in a pupil plane as such as to synthesize a bigger aperture. The advantages with respect to a pure imager are i)…

Instrumentation and Methods for Astrophysics · Physics 2015-06-22 S. Lacour , V. Lapeyrère , L. Gauchet , S. Arroud , R. Gourgues , G. Martin , S. Heidmann , X. Haubois , G. Perrin

We combine Spitzer and ground-based observations to measure the microlens parallax vector ${\mathbf \pi}_{\rm E}$, and so the mass and distance of OGLE-2014-BLG-0124L, making it the first microlensing planetary system with a space-based…

The Microlensing Planet Finder (MPF) is a proposed Discovery mission that will complete the first census of extrasolar planets with sensitivity to planets like those in our own solar system. MPF will employ a 1.1m aperture telescope, which…

We propose a near-infrared microlensing survey of the central 2 degree field of the Galactic Center, in an attempt to estimate the surface density and mass distribution of distant free-floating brown dwarfs in the bulge and in the disk,…

Astrophysics · Physics 2016-08-30 Hans Zinnecker

Aims. We seek to probe the Galactic bulge IMF starting from microlensing observations. Methods. We analyse the recent results of the microlensing campaigns carried out towards the Galactic bulge presented by the EROS, MACHO and OGLE…

Astrophysics · Physics 2009-06-23 S. Calchi Novati , F. De Luca , Ph. Jetzer , L. Mancini , G. Scarpetta

We present a community-led assessment of the solar system investigations achievable with NASA's next-generation space telescope, the Wide Field InfraRed Survey Telescope (WFIRST). WFIRST will provide imaging, spectroscopic, and…

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