Zobrazeno 1 - 10
of 61
pro vyhledávání: '"Daemgen, Sebastian"'
Autor:
Adams, Arthur D., Meyer, Michael R., Howe, Alex R., Burningham, Ben, Daemgen, Sebastian, Fortney, Jonathan, Line, Mike, Marley, Mark, Quanz, Sascha P., Todorov, Kamen
We present model constraints on the atmospheric structure of HD 106906 b, a planetary-mass companion orbiting at a ~700 AU projected separation around a 15 Myr-old stellar binary, using the APOLLO retrieval code on spectral data spanning 1.1-2.5 $\mu
Externí odkaz:
http://arxiv.org/abs/2309.10188
Autor:
Daemgen, Sebastian
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Externí odkaz:
http://edoc.ub.uni-muenchen.de/14977/1/Daemgen_Sebastian.pdf
http://nbn-resolving.de/urn:nbn:de:bvb:19-149771
http://nbn-resolving.de/urn:nbn:de:bvb:19-149771
Autor:
Stolker, Tomas, Quanz, Sascha P., Todorov, Kamen O., Kühn, Jonas, Mollière, Paul, Meyer, Michael R., Currie, Thayne, Daemgen, Sebastian, Lavie, Baptiste
Publikováno v:
A&A 635, A182 (2020)
Directly imaged planets and substellar companions are key targets for the characterization of self-luminous atmospheres. Their photometric appearance at 4-5 $\mu$m is sensitive to the chemical composition and cloud content of their atmosphere. We aim
Externí odkaz:
http://arxiv.org/abs/1912.13316
Autor:
Kuhn, Jonas, Daemgen, Sebastian, Wang, Ji, Morales, Farisa, Bottom, Michael, Serabyn, Eugene, Shelton, Jean C., Delorme, Jacques-Robert, Tinyanont, Samaporn
More than half of the stars in the solar neighborhood reside in binary/multiple stellar systems, and recent studies suggest that gas giant planets may be more abundant around binaries than single stars. Yet, these multiple systems are usually overloo
Externí odkaz:
http://arxiv.org/abs/1808.00585
Autor:
Daemgen, Sebastian, Todorov, Kamen, Quanz, Sascha P., Meyer, Michael R., Mordasini, Christoph, Marleau, Gabriel-Dominique, Fortney, Jonathan J.
Publikováno v:
A&A 608, A71 (2017)
We spectroscopically characterize the atmosphere of HD 106906b, a young low-mass companion near the deuterium burning limit. The wide separation from its host star of 7.1" makes it an ideal candidate for high S/N and high-resolution spectroscopy. We
Externí odkaz:
http://arxiv.org/abs/1708.05747
Autor:
Daemgen, Sebastian, Todorov, Kamen, Silva, Jasmin, Hand, Derek, Garcia, Eugenio V., Currie, Thayne, Burrows, Adam, Stassun, Keivan G., Ratzka, Thorsten, Debes, John H., Lafreniere, David, Jayawardhana, Ray, Correia, Serge
Publikováno v:
A&A 601, A65 (2017)
We present new Keck/NIRC2 3$-$5 $\mu$m infrared photometry of the planetary-mass companion to ROXS 42B in $L^\prime$, and for the first time in Brackett-$\alpha$ (Br$\alpha$) and in $M_\mathrm{s}$-band. We combine our data with existing near-infrared
Externí odkaz:
http://arxiv.org/abs/1702.06549
Autor:
Daemgen, Sebastian, Natta, Antonella, Scholz, Alexander, Testi, Leonardo, Jayawardhana, Ray, Greaves, Jane, Eastwood, Daniel
Publikováno v:
A&A 594, A83 (2016)
Brown dwarf disks are excellent laboratories to test our understanding of disk physics in an extreme parameter regime. In this paper we investigate a sample of 29 well-characterized brown dwarfs and very low mass stars, for which Herschel far-infrare
Externí odkaz:
http://arxiv.org/abs/1607.07458
Publikováno v:
A&A 586, A12 (2016)
It is well known that stellar companions can influence the evolution of a protoplanetary disk. Nevertheless, previous disk surveys did not - and could not - consistently exclude binaries from their samples. We present a study dedicated to investigati
Externí odkaz:
http://arxiv.org/abs/1511.05965
Based on a large number of observations carried out in the last decade it appears that the fraction of stars with protoplanetary disks declines steadily between ~1 Myr and ~10 Myr. We do, however, know that the multiplicity fraction of star-forming r
Externí odkaz:
http://arxiv.org/abs/1506.05132
Autor:
Daemgen, Sebastian, Bonavita, Mariangela, Jayawardhana, Ray, Lafreniere, David, Janson, Markus
We present results from a large, high-spatial-resolution near-infrared imaging search for stellar and sub-stellar companions in the Taurus-Auriga star-forming region. The sample covers 64 stars with masses between those of the most massive Taurus mem
Externí odkaz:
http://arxiv.org/abs/1411.7031