Zobrazeno 1 - 10
of 248
pro vyhledávání: '"Mamajek, E"'
Autor:
Gratton, R., Squicciarini, V., Nascimbeni, V., Janson, M., Reffert, S., Meyer, M., Delorme, P., Mamajek, E. E., Bonavita, M., Desidera, S., Mesa, D., Rigliaco, E., D'Orazi, V., Lazzoni, C., Chauvin, G., Langlois, M.
Publikováno v:
A&A 678, A93 (2023)
We discuss the properties of companions to B stars in the Scorpius-Centaurus association (age ~15 Myr, 181 B-stars). We gathered available data combining high contrast imaging samples with evidence of companions from Gaia, from eclipsing binaries, an
Externí odkaz:
http://arxiv.org/abs/2308.09962
Autor:
Chomez, A., Squicciarini, V., Lagrange, A. -M., Delorme, P., Viswanath, G., Janson, M., Flasseur, O., Chauvin, G., Langlois, M., Rubini, P., Bergeon, S., Albert, D., Bonnefoy, M., Desidera, S., Engler, N., Gratton, R., Henning, T., Mamajek, E. E., Marleau, G. -D., Meyer, M. R., Reffert, S., Ringqvist, S. C., Samland, M.
Publikováno v:
A&A 676, L10 (2023)
Since 2019, the direct imaging B-star Exoplanet Abundance Study (BEAST) at SPHERE@VLT has been scanning the surroundings of young B-type stars in order to ascertain the ultimate frontiers of giant planet formation. Recently, the $17^{+3}_{-4}$ Myr HI
Externí odkaz:
http://arxiv.org/abs/2307.01195
Autor:
Rigliaco, E., Gratton, R., Ceppi, S., Ginski, C., Hogerheijde, M., Benisty, M., Birnstiel, T., Dima, M., Facchini, S., Garufi, A., Bae, J., Langlois, M., Lodato, G., Mamajek, E., Manara, C. F., Ménard, F., Ribas, Á., Zurlo, A.
Publikováno v:
A&A 671, A82 (2023)
Birth environments of young stars have strong imprints on the star itself and their surroundings. We present a detailed analysis of the wealthy circumstellar environment around the young Herbig Ae/Be star TCrA. Our aim is to understand the nature of
Externí odkaz:
http://arxiv.org/abs/2301.01486
Autor:
Squicciarini, V., Gratton, R., Janson, M., Mamajek, E. E., Chauvin, G., Delorme, P., Langlois, M., Vigan, A., Ringqvist, S. C., Meeus, G., Reffert, S., Kenworthy, M., Meyer, M. R., Bonnefoy, M., Bonavita, M., Mesa, D., Samland, M., Desidera, S., D'Orazi, V., Engler, N., Alecian, E., Miglio, A., Henning, T., Quanz, S. P., Mayer, L., Flasseur, O., Marleau, G. D.
Publikováno v:
A&A 664, A9 (2022)
Virtually all known exoplanets reside around stars with $M<2.3~M_\odot$; to clarify if the dearth of planets around more massive stars is real, we launched the direct-imaging B-star Exoplanet Abundance STudy (BEAST) survey targeting B stars ($M>2.4~M
Externí odkaz:
http://arxiv.org/abs/2205.02279
Observations of the star EPIC 220208795 (2MASS J01105556+0018507) reveal a single, deep and asymmetric eclipse, which we hypothesize is due to an eclipsing companion surrounded by a tilted and inclined opaque disk, similar to those seen around V928 T
Externí odkaz:
http://arxiv.org/abs/2110.15086
Autor:
Barmentloo, S., Dik, C., Kenworthy, M. A., Mamajek, E. E., Hambsch, F. -J., Reichart, D. E., Rodriguez, J. E., van Dam, D. M.
Publikováno v:
A&A 652, A117 (2021)
In 2007, the young star 1SWASP J140747.93-394542.6 (V1400 Cen) underwent a complex series of deep eclipses over 56 days. This was attributed to the transit of a ring system filling a large fraction of the Hill sphere of an unseen substellar companion
Externí odkaz:
http://arxiv.org/abs/2106.15902
Autor:
Ginski, C., Facchini, S., Huang, J., Benisty, M., Vaendel, D., Stapper, L., Dominik, C., Bae, J., Menard, F., Muro-Arena, G., Hogerheijde, M., McClure, M., van Holstein, R. G., Birnstiel, T., Boehler, Y., Bohn, A., Flock, M., Mamajek, E. E., Manara, C. F., Pinilla, P., Pinte, C., Ribas, A.
Publikováno v:
ApJL, 908, L25 (2021)
Gas-rich circumstellar disks are the cradles of planet formation. As such, their evolution will strongly influence the resulting planet population. In the ESO DESTINYS large program, we study these disks within the first 10 Myr of their development w
Externí odkaz:
http://arxiv.org/abs/2102.08781
Autor:
Kenworthy, M. A., Mellon, S. N., Bailey III, J. I., Stuik, R., Dorval, P., Talens, G. -J. J., Crawford, S. R., Mamajek, E. E., Laginja, I., Ireland, M., Lomberg, B., Kuhn, R. B., Snellen, I., Zwintz, K., Kuschnig, R., Kennedy, G. M., Abe, L., Agabi, A., Mekarnia, D., Guillot, T., Schmider, F., Stee, P., de Pra, Y., Buttu, M., Crouzet, N., Kalas, P., Wang, J. J., Stevenson, K., de Mooij, E., Lagrange, A. -M., Lacour, S., Etangs, A. Lecavelier des, Nowak, M., Strøm, P. A., Hui, Z., Wang, L.
Publikováno v:
A&A 648, A15 (2021)
Photometric monitoring of Beta Pictoris in 1981 showed anomalous fluctuations of up to 4% over several days, consistent with foreground material transiting the stellar disk. The subsequent discovery of the gas giant planet Beta Pictoris b and the pre
Externí odkaz:
http://arxiv.org/abs/2102.05672
Autor:
Ginski, C., Ménard, F., Rab, Ch., Mamajek, E. E., van Holstein, R. G., Benisty, M., Manara, C. F., Torres, R. Asensio, Bohn, A., Birnstiel, T., Delorme, P., Facchini, S., Garufi, A., Gratton, R., Hogerheijde, M., Huang, J., Kenworthy, M., Langlois, M., Pinilla, P., Pinte, C., Ribas, Á., Rosotti, G., Schmidt, T. O. B., Ancker, M. van den, Wahhaj, Z., Waters, L. B. F. M., Williams, J., Zurlo, A.
Publikováno v:
A&A 642, A119 (2020)
To understand the formation of planetary systems, one needs to understand the initial conditions of planet formation, i.e. the young gas-rich planet forming disks. Spatially resolved high-contrast observations are of particular interest, since substr
Externí odkaz:
http://arxiv.org/abs/2007.05274
Autor:
Marocco, F., Smart, R. L., Mamajek, E. E., Sarro, L. M., Burgasser, A. J., Caballero, J. A., Rees, J. M., Caselden, D., Cruz, K. L., Van Linge, R., Pinfield, D. J.
We present ten new ultra-cool dwarfs in seven wide binary systems discovered using $\textit{Gaia}$ DR2 data, identified as part of our $\textit{Gaia}$ Ultra-Cool Dwarf Sample project. The seven systems presented here include an L1 companion to the G5
Externí odkaz:
http://arxiv.org/abs/2004.04132