Zobrazeno 1 - 10
of 437
pro vyhledávání: '"Wyatt, M C"'
Autor:
Lovell, J. B., Wyatt, M. C., Kalas, P., Kennedy, G. M., Marino, S., Bonsor, A., Penoyre, Z., Fulton, B. J., Pawellek, N.
$\kappa$CrB is a ${\sim}2.5\,$Gyr old K1 sub-giant star, with an eccentric exo-Jupiter at ${\sim}2.8\,$au and a debris disc at tens of au. We present ALMA Band 6 ($1.3\,$mm) and HST scattered light ($0.6\,\mu$m) images, demonstrating $\kappa$CrB's br
Externí odkaz:
http://arxiv.org/abs/2209.12910
Bright debris discs can contain large amounts of CO gas. This gas was thought to be a protoplanetary remnant until it was recently shown that it could be released in collisions of volatile-rich solids. As CO is released, interstellar UV radiation pho
Externí odkaz:
http://arxiv.org/abs/2206.11071
Autor:
Farihi, J., Hermes, J. J., Marsh, T. R., Mustill, A. J., Wyatt, M. C., Guidry, J. A., Wilson, T. G., Redfield, S., Izquierdo, P., Toloza, O., Gänsicke, B. T., Aungwerojwit, A., Dhillon, V. S., Swan, A.
This article reports quasi-continuous transiting events towards WD 1054-226 at d=36.2 pc and V=16.0 mag, based on simultaneous, high-cadence, multi-wavelength imaging photometry using ULTRACAM over 18 nights from 2019 to 2020 March. The predominant p
Externí odkaz:
http://arxiv.org/abs/2109.06183
Autor:
Lovell, J. B., Marino, S., Wyatt, M. C., Kennedy, G. M., MacGregor, M. A., Stapelfeldt, K., Dent, B., Krist, J., Matrà, L., Kral, Q., Panić, O., Pearce, T. D., Wilner, D.
We present \textit{ALMA} 1.3 mm and 0.86 mm observations of the nearby (17.34 pc) F9V star q1 Eri (HD 10647, HR 506). This system, with age ${\sim}1.4$ Gyr, hosts a ${\sim}2$ au radial velocity planet and a debris disc with the highest fractional lum
Externí odkaz:
http://arxiv.org/abs/2106.05975
Autor:
Defrère, D., Hinz, P. M., Kennedy, G. M., Stone, J., Rigley, J., Ertel, S., Gaspar, A., Bailey, V. P., Hoffmann, W. F., Mennesson, B., Millan-Gabet, R., Danchi, W. C., Absil, O., Arbo, P., Beichman, C., Bonavita, M., Brusa, G., Bryden, G., Downey, E. C., Esposito, S., Grenz, P., Haniff, C., Hill, J. M., Leisenring, J. M., Males, J. R., McMahon, T. J., Montoya, M., Morzinski, K. M., Pinna, E., Puglisi, A., Rieke, G., Roberge, A., Rousseau, H., Serabyn, E., Spalding, E., Skemer, A. J., Stapelfeldt, K., Su, K., Vaz, A., Weinberger, A. J., Wyatt, M. C.
The young (50-400 Myr) A3V star $\beta$ Leo is a primary target to study the formation history and evolution of extrasolar planetary systems as one of the few stars with known hot ($\sim$1600$^\circ$K), warm ($\sim$600$^\circ$K), and cold ($\sim$120$
Externí odkaz:
http://arxiv.org/abs/2103.03268
Autor:
Quanz, S. P., Ottiger, M., Fontanet, E., Kammerer, J., Menti, F., Dannert, F., Gheorghe, A., Absil, O., Airapetian, V. S., Alei, E., Allart, R., Angerhausen, D., Blumenthal, S., Buchhave, L. A., Cabrera, J., Carrión-González, Ó., Chauvin, G., Danchi, W. C., Dandumont, C., Defrère, D., Dorn, C., Ehrenreich, D., Ertel, S., Fridlund, M., Muñoz, A. García, Gascón, C., Girard, J. H., Glauser, A., Grenfell, J. L., Guidi, G., Hagelberg, J., Helled, R., Ireland, M. J., Janson, M., Kopparapu, R. K., Korth, J., Kozakis, T., Kraus, S., Léger, A., Leedjärv, L., Lichtenberg, T., Lillo-Box, J., Linz, H., Liseau, R., Loicq, J., Mahendra, V., Malbet, F., Mathew, J., Mennesson, B., Meyer, M. R., Mishra, L., Molaverdikhani, K., Noack, L., Oza, A. V., Pallé, E., Parviainen, H., Quirrenbach, A., Rauer, H., Ribas, I., Rice, M., Romagnolo, A., Rugheimer, S., Schwieterman, E. W., Serabyn, E., Sharma, S., Stassun, K. G., Szulágyi, J., Wang, H. S., Wunderlich, F., Wyatt, M. C., collaboration, the LIFE
Publikováno v:
A&A 664, A21 (2022)
One of the long-term goals of exoplanet science is the atmospheric characterization of dozens of small exoplanets in order to understand their diversity and search for habitable worlds and potential biosignatures. Achieving this goal requires a space
Externí odkaz:
http://arxiv.org/abs/2101.07500
Autor:
Lovell, J. B., Kennedy, G. M., Marino, S., Wyatt, M. C., Ansdell, M., Kama, M., Manara, C. F., Matrà, L., Rosotti, G., Tazzari, M., Testi, L., Williams, J. P.
We observed the K7 class III star NO Lup in an ALMA survey of the 1-3 Myr Lupus association and detected circumstellar dust and CO gas. Here we show that the J = 3-2 CO emission is both spectrally and spatially resolved, with a broad velocity width $
Externí odkaz:
http://arxiv.org/abs/2011.13229
Autor:
Lovell, J. B., Wyatt, M. C., Ansdell, M., Kama, M., Kennedy, G. M., Manara, C. F., Marino, S., Matrà, L., Rosotti, G., Tazzari, M., Testi, L., Williams, J. P.
Class III stars are those in star forming regions without large non-photospheric infrared emission, suggesting recent dispersal of their protoplanetary disks. We observed 30 class III stars in the 1-3 Myr Lupus region with ALMA at ${\sim}856\mu$m, re
Externí odkaz:
http://arxiv.org/abs/2010.12657
The presence of CO gas around 10-50 Myr old A stars with debris discs has sparked debate on whether the gas is primordial or secondary. Since secondary gas released from planetesimals is poor in H$_2$, it was thought that CO would quickly photodissoc
Externí odkaz:
http://arxiv.org/abs/2001.10543
Autor:
Ansdell, M., Gaidos, E., Hedges, C., Tazzari, M., Kraus, A. L., Wyatt, M. C., Kennedy, G. M., Williams, J. P., Mann, A. W., Angelo, I., Duchene, G., Mamajek, E. E., Carpenter, J., Esplin, T. L., Rizzuto, A. C.
Dippers are a common class of young variable star exhibiting day-long dimmings with depths of up to several tens of percent. A standard explanation is that dippers host nearly edge-on (70 deg) protoplanetary discs that allow close-in (< 1 au) dust li
Externí odkaz:
http://arxiv.org/abs/1912.01610