Results 11 to 20 of about 39,945 (265)

Magnetic activity and hot Jupiters of young Suns : the weak-line T Tauri stars V819 Tau and V830 Tau [PDF]

, 2015
SGG acknowledges support from the Science & Technology Facilities Council (STFC) via an Ernest Rutherford Fellowship [ST/J003255/1]. SHPA acknowledges financial support from CNPq, CAPES and Fapemig.
Delfosse, X., Hébrard, E., Gregory, S. G.; id_orcid, Ménard, F., Gregory, S. G., Alencar, S. H. P., Donati, J. -F., Takami, M., Vidotto, A. A., Petit, P., MaTYSSE Collaboration, Grankin, K., Donati, J.F., Figueira, P., Donati, J. F., Menard, Francois, Morin, J., Gregory, Scott, Herczeg, G., Bouvier, J., Jardine, Moira Mary, Fares, R., Hussain, G. A. J., Jardine, M. M., Boisse, I., Moutou, C., Donati, J.-F., Hussain, Gaitee Ara Jaffer, Fares, Rim, Collaboration, Matysse, Doyon, R., Vidotto, Aline, Malo, L.   +32 more
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Magnetic Fields of F-Type Stars [PDF]

, 2022
Magnetic fields are an observable feature of many stars, with warm, F-type stars of interest in searching for the transition from the fossil fields in hot stars to dynamos in cool stars driven by convection zones.
Seach, John M.
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Doppler Constraints on Planetary Companions to Nearby Sun-like Stars: An Archival Radial Velocity Survey of Southern Targets for Proposed NASA Direct Imaging Missions [PDF]

, 2023
Directly imaging temperate rocky planets orbiting nearby, Sun-like stars with a 6 m class IR/O/UV space telescope, recently dubbed the Habitable Worlds Observatory, is a high-priority goal of the Astro2020 Decadal Survey.
Kane, Stephen R., Carter, Brad, Howell, Steve B., Steve B. Howell, Wittenmyer, Robert A., Kane, Stephen R, Shectman, Stephen A., Tinney, C. G., Tinney, CG, Jeremy Bailey, Stephen R. Kane, Zhexing Li, Fulton, B. J., Steven S. Vogt, Vogt, Steven S., Robert A. Wittenmyer, Wittenmyer, Robert A, C. G. Tinney, Volker Perdelwitz, Perdelwitz, Volker, R. Paul Butler, Burt, Jennifer A, Fulton, BJ, Brad Carter, Laughlin, Gregory, Butler, Butler R., Johanna K. Teske, Holden, Bradford, Gnilka, Crystal L, Gnilka, Crystal L., Lee Rosenthal, Crystal L. Gnilka, Crane, Jeffrey D., Burt, Jennifer A., Stephen A. Shectman, Laliotis, Katherine, Feng, Fabo, Rosenthal, Lee, Butler, R Paul, Katherine Laliotis, Jinglin Zhao, Li, Zhexing, Sharon Xuesong Wang, Mamajek, Eric E, Howell, Steve B, Jennifer A. Burt, Elise Furlan, Eric E. Mamajek, Zhao, Jinglin, Rosenthal, Lee Rosenthal, Jeffrey D. Crane, Bailey, Jeremy, Mamajek, Eric E., Bradford Holden, Fabo Feng, Shectman, Stephen A, Wang, Sharon Xuesong, B. J. Fulton, Crane, Jeffrey D, Feng, Fabo Feng, Furlan, Elise, Gregory Laughlin, Teske, Johanna K., Vogt, Steven S, Teske, Johanna K   +64 more
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Zeeman-Doppler imaging of five young solar-type stars [PDF]

, 2022
The magnetic activity of the Sun changes with the solar cycle. Similar cycles are found in other stars as well, but their details are not known to a similar degree.
J. J. Lehtinen, S. C. Marsden, Jeffers, S., T. Hackman, Jeffers, S. V.,, Willamo, Teemu Einari, Lehtinen, J. J.,, Lehtinen, J. J., Käpylä, Maarit J.,, Marsden, S., Lehtinen, Jyri, T. Willamo, Marsden, S. C.,, Käpylä, M., Hackman, Thomas, Korhonen, H.,, Marsden, S. C., Korhonen, H., Lehtinen, J., Kochukhov, O.,, M. J. Käpylä, Kochukhov, Oleg,, O. Kochukhov, S. V. Jeffers, H. Korhonen, Hackman, T.,, Willamo, T.,, Hackman, T., Käpylä, M.J.,, Käpylä, M. J.,, Kochukhov, O., Willamo, T., Käpylä, M. J., Jeffers, S. V.   +33 more
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NACO-SDI imaging of known companion host stars from the AAPS and Keck planet search surveys [PDF]

, 2010
Context. Direct imaging of brown dwarfs as companions to solar-type stars can provide a wealth of well-constrained data to “benchmark” the physics of such objects, since quantities like metallicity and age can be determined from their well-studied ...
Wittenmyer, R., H. R. A. Jones, R. P. Butler, Carter, B.D., Day-Jones, A. C., Jenkins, J.S., R. Wittenmyer, Jenkins, J. S., Tinney, C. G., Butler, R.P., Pinfield, D. J., O'Toole, S. J., Day-Jones, A.C., Biller, B., Pinfield, D.J., C. G. Tinney, B. Carter, Tinney, C.G., J. S. Jenkins, S. J. O'Toole, Jones, H. R. A., L. Close, Close, L., Jones, H.R.A., B. Biller, Butler, R. P., O'Toole, S., A. C. Day-Jones, D. J. Pinfield, Carter, B.   +29 more
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The magnetic fields, activity and hidden companions of solar-type stars [PDF]

, 2023
The magnetic fields of the Sun and other solar-type stars manifest in a range of observable surface phenomena that provide insight into the magnetic dynamos operating within, but also hamper the detection of exoplanets.
Brown, Emma
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A near-infrared interferometric survey of debris disc stars. III. First statistics based on 42 stars observed with CHARA/FLUOR [PDF]

, 2013
peer reviewedContext. Dust is expected to be ubiquitous in extrasolar planetary systems due to the dynamical activity of minor bodies. Inner dust populations are, however, still poorly known due to the high contrast and small angular separation with ...
Mérand, Antoine, Augereau, J. -C., Sturmann, Laszlo, Hanot, C., Monnier, J. D., E. Di Folco, Augereau, Jean-Charles, C. Hanot, J.-C. Augereau, McAlister, Harold, Mollier, Benjamin, Tuthill, Peter, Che, X., Tuthill, P. G., J. D. Monnier, Absil, O., Monnier, John, N. Turner, Kervella, Pierre, P. Kervella, Ertel, Steve, Sturmann, Judit, L. Sturmann, Absil, Olivier, Scott, Nicholas, Ertel, S., Defrère, D., Foresto, V. Coudé Du, V. Coudé du Foresto, Sturmann, L., ten Brummelaar, T. A., H. A. McAlister, Che, Xiao, ten Brummelaar, Theo, McAlister, H. A., Mérand, A., B. Mollier, D. Defrère, Scott, N., Thureau, N., Di Folco, E., P. G. Tuthill, Mollier, B., Coudé du Foresto, Vincent, Kervella, P., Turner, N., Brummelaar, T. A. Ten, A. Mérand, Turner, Nils, T. A. ten Brummelaar, Defrere, Denis, Scott, Nicholas William, N. Scott, Hanot, Charles, O. Absil, Coudé du Foresto, V., Thureau, Nathalie Danielle, N. Thureau, S. Ertel, X. Che, Di Folco, Emmanuel, Thureau, Nathalie, Sturmann, J., J. Sturmann   +63 more
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CHIPS: The Carina High-contrast Imaging Project of massive Stars [PDF]

, 2016
The formation of massive stars remains one of the most intriguing questions in astrophysics today. The main limitations result from the difficulty to obtain direct observational constraints on the formation process itself.
Philippe DeLorme, Saida Caballero-Nieves, Laurent Pueyo, Jean-Baptiste Le Bouquin, Olivier Absil, Alan Rainot, Leonardo Almeida, Kaitlin Kratter, Sylvestre Lacour, Hugues Sana, Hans Zinnecker, Carlos A. Gomez-Gonzalez   +11 more
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Lucky exposures: diffraction limited astronomical imaging through the atmosphere

, 2003
The resolution of astronomical imaging from large optical telescopes is usually limited by the blurring effects of refractive index fluctuations in the Earth’s atmosphere. By taking a large number of short exposure images through the atmosphere, and then
Tubbs, Robert Nigel
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Hot Stars with Cool Companions [PDF]

, 2014
We present intermediate results of a spectroscopic survey for late K-M companions orbiting nearby A and B type stars. Such companions may have formed in the massive disk of the young primary star, and so may be scaled-up versions of brown dwarfs formed ...
Gullikson, Kevin (5274238), Kraus, Adam (5274571), Gullikson, Kevin, Kraus, Adam, Dodson-Robinson, Sarah, Dodson-Robinson, Sarah (5266849)   +5 more
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