Search Results - "Sahlmann, Johannes"

Discovery of Astrometric Accelerations by Dark Companions in the Globular Cluster ω Centauri by Platais, Imants, Sahlmann, Johannes, Girardi, Léo, Kozhurina-Platais, Vera, Kamann, Sebastian, Pourbaix, Dimitri, Wragg, Florence, Lemson, Gerard, Mitschang, Arik

“…Abstract We present results from the search for astrometric accelerations of stars in ω Centauri using 13 yr of regularly scheduled Hubble Space Telescope…”
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The Ultracool SpeXtroscopic Survey. I. Volume-limited Spectroscopic Sample and Luminosity Function of M7−L5 Ultracool Dwarfs by Bardalez Gagliuffi, Daniella C., Burgasser, Adam J., Schmidt, Sarah J., Theissen, Christopher, Gagné, Jonathan, Gillon, Michael, Sahlmann, Johannes, Faherty, Jacqueline K., Gelino, Christopher, Cruz, Kelle L., Skrzypek, Nathalie, Looper, Dagny

“…We present a volume-limited, spectroscopically verified sample of M7−L5 ultracool dwarfs (UCDs) within 25 pc. The sample contains 410 sources, of which 93%…”
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JWST/NIRCam Discovery of the First Y+Y Brown Dwarf Binary: WISE J033605.05–014350.4 by Calissendorff, Per, De Furio, Matthew, Meyer, Michael, Albert, Loïc, Aganze, Christian, Ali-Dib, Mohamad, Bardalez Gagliuffi, Daniella C., Baron, Frederique, Beichman, Charles A., Burgasser, Adam J., Cushing, Michael C., Faherty, Jacqueline Kelly, Fontanive, Clémence, Gelino, Christopher R., Gizis, John E., Greenbaum, Alexandra Z., Kirkpatrick, J. Davy, Leggett, Sandy K., Martinache, Frantz, Mary, David, N’Diaye, Mamadou, Pope, Benjamin J. S., Roellig, Thomas, Sahlmann, Johannes, Sivaramakrishnan, Anand, Thorngren, Daniel Peter, Ygouf, Marie, Vandal, Thomas

“…Abstract We report the discovery of the first brown dwarf binary system with a Y dwarf primary, WISE J033605.05−014350.4, observed with NIRCam on JWST with the…”
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An Earth-mass planet orbiting α Centauri B by Dumusque, Xavier, Pepe, Francesco, Lovis, Christophe, Ségransan, Damien, Sahlmann, Johannes, Benz, Willy, Bouchy, François, Mayor, Michel, Queloz, Didier, Santos, Nuno, Udry, Stéphane

“…Exoplanets down to the size of Earth have been found, but not in the habitable zone—that is, at a distance from the parent star at which water, if present,…”
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First Gaia Dynamics of the Andromeda System: DR2 Proper Motions, Orbits, and Rotation of M31 and M33 by van der Marel, Roeland P., Fardal, Mark A., Sohn, Sangmo Tony, Patel, Ekta, Besla, Gurtina, Pino, Andrés del, Sahlmann, Johannes, Watkins, Laura L.

“…The 3D velocities of M31 and M33 are important for understanding the evolution and cosmological context of the Local Group. Their most massive stars are…”
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THE ORBIT OF THE L DWARF + T DWARF SPECTRAL BINARY SDSS J080531.84+481233.0 by Burgasser, Adam J, Blake, Cullen H, Gelino, Christopher R, Sahlmann, Johannes, Gagliuffi, Daniella Bardalez

“…ABSTRACT SDSS J080531.84+481233.0 is a closely separated, very-low-mass (VLM) binary identified through combined-light spectroscopy and confirmed as an…”
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WD 0141−675: a case study on how to follow-up astrometric planet candidates around white dwarfs by Rogers, Laura K, Debes, John, Anslow, Richard J, Bonsor, Amy, Casewell, S L, Dos Santos, Leonardo A, Dufour, Patrick, T. Gänsicke, Boris, Gentile Fusillo, Nicola, Koester, Detlev, Nielsen, Louise Dyregaard, Penoyre, Zephyr, Rickman, Emily L, Sahlmann, Johannes, Tremblay, Pier-Emmanuel, Vanderburg, Andrew, Dennihy, Erik, Farihi, Jay, Hermes, J J, Hodgkin, Simon, Kilic, Mukremin, Kowalski, Piotr M, Sanderson, Hannah, Toonen, Silvia

“…ABSTRACT This work combines spectroscopic and photometric data of the polluted white dwarf WD 0141−675, which has a now retracted astrometric super-Jupiter…”
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ARMADA. II. Further Detections of Inner Companions to Intermediate-mass Binaries with Microarcsecond Astrometry at CHARA and VLTI by Gardner, Tyler, Monnier, John D., Fekel, Francis C., Le Bouquin, Jean-Baptiste, Scovera, Adam, Schaefer, Gail, Kraus, Stefan, Adams, Fred C., Anugu, Narsireddy, Berger, Jean-Philippe, Ten Brummelaar, Theo, Davies, Claire L., Ennis, Jacob, Gies, Douglas R., Johnson, Keith J. C., Kervella, Pierre, Kratter, Kaitlin M., Labdon, Aaron, Lanthermann, Cyprien, Sahlmann, Johannes, Setterholm, Benjamin R.

“…Abstract We started a survey with CHARA/MIRC-X and VLTI/GRAVITY to search for low-mass companions orbiting individual components of intermediate-mass binary…”
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The Near Infrared Imager and Slitless Spectrograph for the James Webb Space Telescope. IV. Aperture Masking Interferometry by Sivaramakrishnan, Anand, Tuthill, Peter, Lloyd, James P., Greenbaum, Alexandra Z., Thatte, Deepashri, Cooper, Rachel A., Vandal, Thomas, Kammerer, Jens, Sanchez-Bermudez, Joel, Pope, Benjamin J. S., Blakely, Dori, Albert, Loïc, Cook, Neil J., Johnstone, Doug, Martel, André R., Volk, Kevin, Soulain, Anthony, Artigau, Étienne, Lafrenière, David, Willott, Chris J., Parmentier, Sébastien, Ford, K. E. Saavik, McKernan, Barry, Vila, M. Begoña, Rowlands, Neil, Doyon, René, Beaulieu, Mathilde, Desdoigts, Louis, Fullerton, Alexander W., De Furio, Matthew, Goudfrooij, Paul, Holfeltz, Sherie T., LaMassa, Stephanie, Maszkiewicz, Michael, Meyer, Michael R., Perrin, Marshall D., Pueyo, Laurent, Sahlmann, Johannes, Sohn, Sangmo Tony, Teixeira, Paula S., Zheng, Sheng-hai

“…Abstract The James Webb Space Telescope’s Near Infrared Imager and Slitless Spectrograph (JWST-NIRISS) flies a 7-hole non-redundant mask (NRM), the first such…”
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THE ORBIT OF THE L DWARF + T DWARF SPECTRAL BINARY SDSS J080531.84+481233.0 Some of the data presented herein were obtained at the W.M. Keck Observatory, which is operated as a scientific partnership among the California Institute of Technology, the University of California and the National Aeronautics and Space Administration. The Observatory was made possible by the generous financial support of the W.M. Keck Foundation by Burgasser, Adam J., Blake, Cullen H., Gelino, Christopher R., Sahlmann, Johannes, Gagliuffi, Daniella Bardalez

“…ABSTRACT SDSS J080531.84+481233.0 is a closely separated, very-low-mass (VLM) binary identified through combined-light spectroscopy and confirmed as an…”
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Machine learning-based identification of Gaia astrometric exoplanet orbits by Sahlmann, Johannes, Gómez, Pablo

“…The third Gaia data release (DR3) contains $\sim$170 000 astrometric orbit solutions of two-body systems located within $\sim$500 pc of the Sun. Determining…”
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High precision astrometry mission for the detection and characterization of nearby habitable planetary systems with the Nearby Earth Astrometric Telescope (NEAT) by Malbet, Fabien, Léger, Alain, Shao, Michael, Goullioud, Renaud, Lagage, Pierre-Olivier, Brown, Anthony G. A., Cara, Christophe, Durand, Gilles, Eiroa, Carlos, Feautrier, Philippe, Jakobsson, Björn, Hinglais, Emmanuel, Kaltenegger, Lisa, Labadie, Lucas, Lagrange, Anne-Marie, Laskar, Jacques, Liseau, René, Lunine, Jonathan, Maldonado, Jesús, Mercier, Manuel, Mordasini, Christoph, Queloz, Didier, Quirrenbach, Andreas, Sozzetti, Alessandro, Traub, Wesley, Absil, Olivier, Alibert, Yann, Andrei, Alexandre Humberto, Arenou, Frédéric, Beichman, Charles, Chelli, Alain, Cockell, Charles S., Duvert, Gilles, Forveille, Thierry, Garcia, Paulo J. V., Hobbs, David, Krone-Martins, Alberto, Lammer, Helmut, Meunier, Nadège, Minardi, Stefano, Moitinho de Almeida, André, Rambaux, Nicolas, Raymond, Sean, Röttgering, Huub J. A., Sahlmann, Johannes, Schuller, Peter A., Ségransan, Damien, Selsis, Franck, Surdej, Jean, Villaver, Eva, White, Glenn J., Zinnecker, Hans

“…A complete census of planetary systems around a volume-limited sample of solar-type stars (FGK dwarfs) in the Solar neighborhood ( d  ≤ 15 pc) with uniform…”
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An Earth―mass planet orbiting a Centauri B by DUMUSQUE, Xavier, PEPE, Francesco, UDRY, Stephane, LOVIS, Christophe, SEGRANSAN, Damien, SAHLMANN, Johannes, BENZ, Willy, BOUCHY, François, MAYOR, Michel, QUELOZ, Didier, SANTOS, Nuno

“…Exoplanets down to the size of Earth have been found, but not in the habitable zone-that is, at a distance from the parent star at which water, if present,…”
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Discovery of astrometric accelerations by dark companions in the globular cluster $\omega$ Centauri by Platais, Imants, Sahlmann, Johannes, Girardi, Leo, Kozhurina-Platais, Vera, Kamann, Sebastian, Pourbaix, Dimitri, Wragg, Florence, Lemson, Gerard, Mitschang, Arik W

“…We present results from the search for astrometric accelerations of stars in $\omega$ Centauri using 13 years of regularly-scheduled {\it Hubble Space…”
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3C 273 Host Galaxy with Hubble Space Telescope Coronagraphy by Ren, Bin B, Fogarty, Kevin, Debes, John H, Meyer, Eileen T, Mo, Youbin, Mawet, Dimitri, Perrin, Marshall D, Ogle, Patrick M, Sahlmann, Johannes

“…The close-in regions of bright quasars' host galaxies have been difficult to image due to the overwhelming light from the quasars. With coronagraphic…”
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Mass ratio of the 2 pc binary brown dwarf LUH16 and limits on planetary companions from astrometry by Sahlmann, Johannes, Lazorenko, Petro F

“…Monthly Notices of the Royal Astronomical Society: Letters, 2015, Volume 453, Issue 1, p.L103-L107 We analyse FORS2/VLT $I$-band imaging data to monitor the…”
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Toward Complete Characterization: Prospects for Directly Imaging Transiting Exoplanets by Stark, Christopher C, Dressing, Courtney, Dulz, Shannon, Lopez, Eric, Marley, Mark S, Plavchan, Peter, Sahlmann, Johannes

“…High contrast direct imaging of exoplanets can provide many important observables, including measurements of the orbit, spectra that probe the lower layers of…”
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Substellar science in the wake of the ESA Euclid space mission by Martín, Eduardo L, Bouy, Hervé, Martín, Diego, Zerjal, Marusa, Zhang, Jerry J. -Y, Burgasser, Adam, Olivares, Javier, Lodieu, Nicolas, Solano, Enrique, Cruz, Patricia, Barrado, David, Huélamo, Nuria, Mas-Buitrago, Pedro, Morales, Maria, del Burgo, Carlos, Escobar, Alberto, Béjar, Víctor Sánchez, Sahlmann, Johannes, Osorio, Maria Rosa Zapatero

“…Invited review at WINDOWS ON THE UNIVERSE - 30TH ANNIVERSARY RENCONTRES DU VIETNAM 2023 The ESA space mission Euclid was launched on July 1st, 2023 and is…”
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WD0141-675: A case study on how to follow-up astrometric planet candidates around white dwarfs by Rogers, Laura K, Debes, John, Anslow, Richard J, Bonsor, Amy, Casewell, S. L, Santos, Leonardo A. Dos, Dufour, Patrick, Gänsicke, Boris, Fusillo, Nicola Gentile, Koester, Detlev, Nielsen, Louise Dyregaard, Penoyre, Zephyr, Rickman, Emily L, Sahlmann, Johannes, Tremblay, Pier-Emmanuel, Vanderburg, Andrew, Xu, Siyi, Dennihy, Erik, Farihi, Jay, Hermes, J. J, Hodgkin, Simon, Kilic, Mukremin, Kowalski, Piotr M, Sanderson, Hannah, Toonen, Silvia

“…This work combines spectroscopic and photometric data of the polluted white dwarf WD0141-675 which has a now retracted astrometric super-Jupiter candidate and…”
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ARMADA II: Further Detections of Inner Companions to Intermediate Mass Binaries with Micro-Arcsecond Astrometry at CHARA and VLTI by Gardner, Tyler, Monnier, John D, Fekel, Francis C, Bouquin, Jean-Baptiste Le, Scovera, Adam, Schaefer, Gail, Kraus, Stefan, Adams, Fred C, Anugu, Narsireddy, Berger, Jean-Philippe, Brummelaar, Theo Ten, Davies, Claire L, Ennis, Jacob, Gies, Douglas R, Johnson, Keith J. C, Kervella, Pierre, Kratter, Kaitlin M, Labdon, Aaron, Lanthermann, Cyprien, Sahlmann, Johannes, Setterholm, Benjamin R

“…We started a survey with CHARA/MIRC-X and VLTI/GRAVITY to search for low mass companions orbiting individual components of intermediate mass binary systems…”
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