Zobrazeno 1 - 10
of 79
pro vyhledávání: '"Reggiani, Maddalena"'
Massive stars are recognized for their high degree of multiplicity, yet the mass ratio regime below 0.1 remains insufficiently explored. It is therefore unknown whether extremely low-mass (possibly substellar) companions can form and survive in the d
Externí odkaz:
http://arxiv.org/abs/2409.16212
Autor:
Wallack, Nicole L., Ruffio, Jean-Baptiste, Ruane, Garreth, Ren, Bin B., Xuan, Jerry W., Villenave, Marion, Mawet, Dimitri, Stapelfeldt, Karl, Wang, Jason J., Liu, Michael C., Absil, Olivier, Alvarez, Carlos, Bae, Jaehan, Bond, Charlotte, Bottom, Michael, Calvin, Benjamin, Choquet, Élodie, Christiaens, Valentin, Cook, Therese, Castellá, Bruno Femenía, Gonzalez, Carlos Gomez, Guidi, Greta, Huby, Elsa, Kastner, Joel, Knutson, Heather A., Meshkat, Tiffany, Ngo, Henry, Ragland, Sam, Reggiani, Maddalena, Ricci, Luca, Serabyn, Eugene, Uyama, Taichi, Williams, Jonathan P., Wizinowich, Peter, Zawol, Zoe, Zhang, Shangjia, Zhu, Zhaohuan
Recent Atacama Large Millimeter/submillimeter Array (ALMA) observations of protoplanetary disks in the millimeter continuum have shown a variety of radial gaps, cavities, and spiral features. These substructures may be signposts for ongoing planet fo
Externí odkaz:
http://arxiv.org/abs/2408.04048
Autor:
Absil, Olivier, Mawet, Dimitri, Karlsson, Mikael, Carlomagno, Brunella, Christiaens, Valentin, Defrère, Denis, Delacroix, Christian, Femenía Castella, Bruno, Forsberg, Pontus, Girard, Julien, Gómez González, Carlos A., Habraken, Serge, Hinz, Philip M., Huby, Elsa, Jolivet, Aïssa, Matthews, Keith, Milli, Julien, Orban de Xivry, Gilles, Pantin, Eric, Piron, Pierre, Reggiani, Maddalena, Ruane, Garreth J., Serabyn, Gene, Surdej, Jean, Tristram, Konrad R. W., Vargas Catalán, Ernesto, Wertz, Olivier, Wizinowich, Peter
For several years, we have been developing vortex phase masks based on sub-wavelength gratings, known as Annular Groove Phase Masks. Etched onto diamond substrates, these AGPMs are currently designed to be used in the thermal infrared (ranging from 3
Externí odkaz:
http://hdl.handle.net/10150/622801
http://arizona.openrepository.com/arizona/handle/10150/622801
http://arizona.openrepository.com/arizona/handle/10150/622801
Publikováno v:
A&A 678, A172 (2023)
One of the most remarkable properties of massive stars is that almost all of them are found in binaries or higher-order multiple systems. Observations that cover the full companion mass ratio and separation regime are essential to constrain massive s
Externí odkaz:
http://arxiv.org/abs/2307.13500
Autor:
Mawet, Dimitri, Choquet, Élodie, Absil, Olivier, Huby, Elsa, Bottom, Michael, Serabyn, Eugene, Femenia, Bruno, Lebreton, Jérémy, Matthews, Keith, Gonzalez, Carlos A. Gomez, Wertz, Olivier, Carlomagno, Brunella, Christiaens, Valentin, Defrère, Denis, Delacroix, Christian, Forsberg, Pontus, Habraken, Serge, Jolivet, Aissa, Karlsson, Mikael, Milli, Julien, Pinte, Christophe, Piron, Pierre, Reggiani, Maddalena, Surdej, Jean, Catalan, Ernesto Vargas
HD 141569 A is a pre-main sequence B9.5 Ve star surrounded by a prominent and complex circumstellar disk, likely still in a transition stage from protoplanetary to debris disk phase. Here, we present a new image of the third inner disk component of H
Externí odkaz:
http://hdl.handle.net/10150/625206
http://arizona.openrepository.com/arizona/handle/10150/625206
http://arizona.openrepository.com/arizona/handle/10150/625206
Autor:
Femenía Castellá, Bruno, Serabyn, Eugene, Mawet, Dimitri, Absil, Olivier, Wizinowich, Peter, Matthews, Keith, Huby, Elsa, Bottom, Michael, Campbell, Randy, Chan, Dwight, Carlomagno, Brunella, Cetre, Sylvain, Defrère, Denis, Delacroix, Christian, Gomez Gonzalez, Carlos, Jolivet, Aïssa, Karlsson, Mikael, Lanclos, Kyle, Lilley, Scott, Milner, Steven, Ngo, Henry, Reggiani, Maddalena, Simmons, Julia, Tran, Hien, Vargas Catalan, Ernesto, Wertz, Olivier
On March 2015 an L'-band vortex coronagraph based on an Annular Groove Phase Mask made up of a diamond sub-wavelength grating was installed on NIRC2 as a demonstration project. This vortex coronagraph operates in the L' band not only in order to take
Externí odkaz:
http://hdl.handle.net/10150/622007
http://arizona.openrepository.com/arizona/handle/10150/622007
http://arizona.openrepository.com/arizona/handle/10150/622007
Publikováno v:
A&A 658, A198 (2022)
Most massive stars belong to multiple systems, yet the formation process leading to such high multiplicity remains insufficiently understood. To help constrain the different formation scenarios that exist, insights on the low-mass end of the companio
Externí odkaz:
http://arxiv.org/abs/2111.12361
Autor:
Bohn, Alexander J., Ginski, Christian, Kenworthy, Matthew A., Mamajek, Eric E., Meshkat, Tiffany, Pecaut, Mark J., Reggiani, Maddalena, Seay, Christopher R., Brown, Anthony G. A., Cugno, Gabriele, Henning, Thomas, Launhardt, Ralf, Quirrenbach, Andreas, Rickman, Emily L., Ségransan, Damien
Abbreviated. We aim to identify new low-mass companions to young stars using the astrometric measurements provided by the Gaia space mission and complementary VLT/SPHERE data. We identify companion candidates from a sample of K-type, pre-main sequenc
Externí odkaz:
http://arxiv.org/abs/2109.09185
Autor:
Zhang, Yapeng, Snellen, Ignas, Bohn, Alexander J., Mollière, Paul, Ginski, Christian, Hoeijmakers, H. Jens, Kenworthy, Matthew A., Mamajek, Eric E., Meshkat, Tiffany, Reggiani, Maddalena, Snik, Frans
Isotope abundance ratios play an important role in astronomy and planetary sciences, providing insights in the origin and evolution of the Solar System, interstellar chemistry, and stellar nucleosynthesis. In contrast to deuterium/hydrogen ratios, ca
Externí odkaz:
http://arxiv.org/abs/2107.06297
Autor:
Bohn, Alexander J., Ginski, Christian, Kenworthy, Matthew A., Mamajek, Eric E., Pecaut, Mark J., Mugrauer, Markus, Vogt, Nikolaus, Adam, Christian, Meshkat, Tiffany, Reggiani, Maddalena, Snik, Frans
Publikováno v:
A&A 648, A73 (2021)
Abbreviated. By selecting stars with similar ages and masses, the Young Suns Exoplanet Survey (YSES) aims to detect and characterize planetary-mass companions to solar-type host stars in the Scorpius-Centaurus association. Our survey is carried out w
Externí odkaz:
http://arxiv.org/abs/2104.08285