Zobrazeno 1 - 10
of 468
pro vyhledávání: '"Casassus S"'
Publikováno v:
A&A 659, A90 (2022)
X-ray- and extreme-ultraviolet- (XEUV-) driven photoevaporative winds acting on protoplanetary disks around young T-Tauri stars may strongly impact disk evolution, affecting both gas and dust distributions. We compute dust densities for the wind regi
Externí odkaz:
http://arxiv.org/abs/2201.12108
Autor:
Franz, R., Ercolano, B., Casassus, S., Picogna, G., Birnstiel, T., Pérez, S., Rab, Ch., Sharma, A.
Publikováno v:
A&A 657, A69 (2022)
X-ray- and EUV- (XEUV-) driven photoevaporative winds acting on protoplanetary disks around young T-Tauri stars may crucially impact disk evolution, affecting both gas and dust distributions. We constrain the dust densities in a typical XEUV-driven o
Externí odkaz:
http://arxiv.org/abs/2110.10637
Autor:
Christiaens, V., Ubeira-Gabellini, M. -G., Cánovas, H., Delorme, P., Pairet, B., Absil, O., Casassus, S., Girard, J. H., Zurlo, A., Aoyama, Y., Marleau, G-D., Spina, L., van der Marel, N., Cieza, L., Lodato, G., Pérez, S., Pinte, C., Price, D. J., Reggiani, M.
Understanding how giant planets form requires observational input from directly imaged protoplanets. We used VLT/NACO and VLT/SPHERE to search for companions in the transition disc of 2MASS J19005804-3645048 (hereafter CrA-9), an accreting M0.75 dwar
Externí odkaz:
http://arxiv.org/abs/2102.10288
Autor:
Zurlo, A., Cugno, G., Montesinos, M., Canovas, H., Casassus, S., Christiaens, V., Cieza, L., Huelamo, N., Perez, S.
Publikováno v:
A&A 633, A119 (2020)
The mechanisms of planet formation are still under debate. We know little about how planets form, even if more than 4000 exoplanets have been detected to date. Recent investigations target the cot of newly born planets: the protoplanetary disk. At th
Externí odkaz:
http://arxiv.org/abs/1912.04911
Autor:
Pinte, C., van der Plas, G., Menard, F., Price, D. J., Christiaens, V., Hill, T., Mentiplay, D., Ginski, C., Choquet, E., Boehler, Y., Duchene, G., Perez, S., Casassus, S.
We still do not understand how planets form, or why extra-solar planetary systems are so different from our own solar system. But the last few years have dramatically changed our view of the discs of gas and dust around young stars. Observations with
Externí odkaz:
http://arxiv.org/abs/1907.02538
Autor:
Christiaens, V., Cantalloube, F., Casassus, S., Price, D. J., Absil, O., Pinte, C., Girard, J., Montesinos, M.
Publikováno v:
ApJL 877 L33 (2019)
We present the first observational evidence for a circumplanetary disk around the protoplanet PDS~70~b, based on a new spectrum in the $K$ band acquired with VLT/SINFONI. We tested three hypotheses to explain the spectrum: Atmospheric emission from t
Externí odkaz:
http://arxiv.org/abs/1905.06370
Autor:
Christiaens, V., Casassus, S., Absil, O., Cantalloube, F., Gonzalez, C. Gomez, Girard, J., Ramirez, R., Pairet, B., Salinas, V., Price, D. J., Pinte, C., Quanz, S. P., Jordan, A., Mawet, D., Wahhaj, Z.
Transition discs are prime targets to look for protoplanets and study planet-disc interactions. We present VLT/SINFONI observations of PDS~70, a transition disc with a recently claimed embedded protoplanet. We take advantage of the angular and spectr
Externí odkaz:
http://arxiv.org/abs/1905.01860
Autor:
van der Plas, G., Ménard, F., Gonzalez, J. -F., Perez, S., Rodet, L., Pinte, C., Cieza, L., Casassus, S., Benisty, M.
Publikováno v:
A&A 624, A33 (2019)
Context: The complex system HD 100453 AB with a ring-like circumprimary disk and two spiral arms, one of which is pointing to the secondary, is a good laboratory to test spiral formation theories. Aims: To quantify the interaction of HD 100453 B with
Externí odkaz:
http://arxiv.org/abs/1902.00720
Autor:
Faramaz, V., Bryden, G., Stapelfeldt, K. R., Booth, M., Bayo, A., Beust, H., Casassus, S., Cuadra, J., Hales, A., Hughes, A. M., Olofsson, J., Su, K. Y. L., Wilner, D. J.
Publikováno v:
Monthly Notices of the Royal Astronomical Society, Volume 481, Issue 1, 21 November 2018, Pages 44-48
The presence of a debris disc around the Gyr-old solar-type star $\zeta^2\,\mathrm{Reticuli}$ was suggested by the $\mathit{Spitzer}$ infrared excess detection. Follow-up observations with $\mathit{Herschel}$/PACS revealed a double-lobed feature, tha
Externí odkaz:
http://arxiv.org/abs/1809.00645
Autor:
Christiaens, V., Casassus, S., Absil, O., Kimeswenger, S., Gonzalez, C. A. Gomez, Girard, J., Ramírez, R., Wertz, O., Zurlo, A., Flores, C., Salinas, V., Jordán, A., Mawet, D.
Publikováno v:
A&A 617, A37 (2018)
The circumstellar disk of the Herbig Fe star HD 142527 is host to several remarkable features including a warped inner disk, a 120 au-wide annular gap, a prominent dust trap and several spiral arms. A low-mass companion, HD 142527 B, was also found o
Externí odkaz:
http://arxiv.org/abs/1806.04792