Zobrazeno 1 - 10
of 182
pro vyhledávání: '"Krivov, Alexander v."'
Extrasolar debris disks are detected by observing dust, which is thought to be released during planetesimal collisions. This implies that planetesimals are dynamically excited ("stirred"), such that collisions are sufficiently common and violent. The
Externí odkaz:
http://arxiv.org/abs/2311.10461
Autor:
Pearce, Tim D., Krivov, Alexander V., Sefilian, Antranik A., Jankovic, Marija R., Löhne, Torsten, Morgner, Tobias, Wyatt, Mark C., Booth, Mark, Marino, Sebastian
Debris discs are our best means to probe the outer regions of planetary systems. Many studies assume that planets lie at the inner edges of debris discs, akin to Neptune and the Kuiper Belt, and use the disc morphologies to constrain those otherwise-
Externí odkaz:
http://arxiv.org/abs/2311.04265
Autor:
Su, Kate Y. L., De Buizer, James M., Rieke, George H., Krivov, Alexander V., Löhne, Torsten, Marengo, Massimo, Stapelfeldt, Karl R., Ballering, Nicholas P., Vacca, William D.
Debris disk morphology is wavelength dependent due to the wide range of particle sizes and size-dependent dynamics influenced by various forces. Resolved images of nearby debris disks reveal complex disk structures that are difficult to distinguish f
Externí odkaz:
http://hdl.handle.net/10150/624715
http://arizona.openrepository.com/arizona/handle/10150/624715
http://arizona.openrepository.com/arizona/handle/10150/624715
Autor:
Booth, Mark, Pearce, Tim D., Krivov, Alexander V., Wyatt, Mark C., Dent, William R. F., Hales, Antonio S., Lestrade, Jean-François, de Miera, Fernando Cruz-Sáenz, Faramaz, Virginie C., Löhne, Torsten, Chavez-Dagostino, Miguel
$\epsilon$ Eridani is the closest star to our Sun known to host a debris disc. Prior observations in the (sub-)millimetre regime have potentially detected clumpy structure in the disc and attributed this to interactions with an (as yet) undetected pl
Externí odkaz:
http://arxiv.org/abs/2303.13584
Autor:
Pearce, Tim D., Kirchschlager, Florian, Rouillé, Gaël, Ertel, Steve, Bensberg, Alexander, Krivov, Alexander V., Booth, Mark, Wolf, Sebastian, Augereau, Jean-Charles
Excess near-infrared emission is detected around one fifth of main-sequence stars, but its nature is a mystery. These excesses are interpreted as thermal emission from populations of small, hot dust very close to their stars (`hot exozodis'), but suc
Externí odkaz:
http://arxiv.org/abs/2209.11219
Autor:
Pearce, Tim D., Launhardt, Ralf, Ostermann, Robert, Kennedy, Grant M., Gennaro, Mario, Booth, Mark, Krivov, Alexander V., Cugno, Gabriele, Henning, Thomas K., Quirrenbach, Andreas, Barcucci, Arianna Musso, Matthews, Elisabeth C., Ruh, Henrik L., Stone, Jordan M.
We know little about the outermost exoplanets in planetary systems, because our detection methods are insensitive to moderate-mass planets on wide orbits. However, debris discs can probe the outer-planet population, because dynamical modelling of obs
Externí odkaz:
http://arxiv.org/abs/2201.08369
Autor:
Pearce, Tim D., Beust, Hervé, Faramaz, Virginie, Booth, Mark, Krivov, Alexander V., Löhne, Torsten, Poblete, Pedro P.
The star Fomalhaut hosts a narrow, eccentric debris disc, plus a highly eccentric companion Fomalhaut b. It is often argued that Fomalhaut b cannot have significant mass, otherwise it would quickly perturb the disc. We show that material in internal
Externí odkaz:
http://arxiv.org/abs/2103.04977
Autor:
Booth, Mark, Schulz, Michael, Krivov, Alexander V., Marino, Sebastián, Pearce, Tim D., Launhardt, Ralf
Publikováno v:
MNRAS, 500, 2, 1604-1611 (2021)
HD 38206 is an A0V star in the Columba association, hosting a debris disc first discovered by IRAS. Further observations by Spitzer and Herschel showed that the disc has two components, likely analogous to the asteroid and Kuiper belts of the Solar S
Externí odkaz:
http://arxiv.org/abs/2010.14521
For the first time we observed the emission of hot exozodiacal dust in L band. We used the new instrument MATISSE at the Very Large Telescope Interferometer to detect the hot dust around $\kappa$ Tuc with a significance of 3$\sigma$ to 6$\sigma$ at w
Externí odkaz:
http://arxiv.org/abs/2009.02334
Autor:
Krivov, Alexander V., Wyatt, Mark C.
Debris belts on the periphery of planetary systems, encompassing the region occupied by planetary orbits, are massive analogues of the Solar system's Kuiper belt. They are detected by thermal emission of dust released in collisions amongst directly u
Externí odkaz:
http://arxiv.org/abs/2008.07406