Zobrazeno 1 - 10
of 584
pro vyhledávání: '"González, J. F."'
Autor:
Rosales, J. A., Mennickent, R. E., Djurašević, G., González, J. F., Araya, I., Cabezas, M., Schleicher, D. R. G., Curé, M.
Publikováno v:
The Astronomical Journal, 161, 2012, 165
We present a detailed photometric and spectroscopic analysis of DD CMa, based on published survey photometry and new spectroscopic data. We find an improved orbital period of $P_\mathrm{o}= 2.0084530 \pm 0.0000006 ~\mathrm{d}$. Our spectra reveal H$\
Externí odkaz:
http://arxiv.org/abs/2109.00234
Autor:
Boehler, Y., Ménard, F., Robert, C. M. T., Isella, A., Pinte, C., Gonzalez, J. -F., van der Plas, G., Weaver, E., Teague, R., Garg, H., Méheut, H.
Publikováno v:
A&A 650, A59 (2021)
Vortices are one of the most promising mechanisms to locally concentrate millimeter dust grains and allow the formation of planetesimals through gravitational collapse. The outer disk around the binary system HD 142527 is known for its large horsesho
Externí odkaz:
http://arxiv.org/abs/2103.13474
Autor:
Saffe, C., Miquelarena, P., Alacoria, J., Gonzalez, J. F., Flores, M., Arancibia, M. Jaque, Calvo, D., Jofre, E., Collado, A.
Publikováno v:
A&A 641, A145 (2020)
Context. The detection of planets orbiting chemically peculiar stars is very scarcely known in the literature. Aims. To determine the detailed chemical composition of the remarkable planet host star KELT-17. This object hosts a hot-Jupiter planet wit
Externí odkaz:
http://arxiv.org/abs/2007.14210
Autor:
Menard, F., Cuello, N., Ginski, C., van der Plas, G., Villenave, M., Gonzalez, J. -F., Pinte, C., Benisty, M., Boccaletti, A., Price, D. J., Boehler, Y., Chripko, S., de Boer, J., Dominik, C., Garufi, A., Gratton, R., Hagelberg, J., Henning, Th., Langlois, M., Maire, A. L., Pinilla, P., Ruane, G. J., Schmid, H. M., van Holstein, R. G., Vigan, A., Zurlo, A., Hubin, N., Pavlov, A., Rochat, S., Sauvage, J. -F., Stadler, E.
Publikováno v:
A&A 639, L1 (2020)
We present observations of the young multiple system UX Tauri to look for circumstellar disks and for signs of dynamical interactions. We obtained SPHERE/IRDIS deep differential polarization images in the J and H bands. We also used ALMA archival CO
Externí odkaz:
http://arxiv.org/abs/2006.02439
Autor:
Boccaletti, A., Chauvin, G., Mouillet, D., Absil, O., Allard, F., Antoniucci, S., Augereau, J. -C., Barge, P., Baruffolo, A., Baudino, J. -L., Baudoz, P., Beaulieu, M., Benisty, M., Beuzit, J. -L., Bianco, A., Biller, B., Bonavita, B., Bonnefoy, M., Bos, S., Bouret, J. -C., Brandner, W., Buchschache, N., Carry, B., Cantalloube, F., Cascone, E., Carlotti, A., Charnay, B., Chiavassa, A., Choquet, E., Clenet, Y., Crida, A., De Boer, J., De Caprio, V., Desidera, S., Desert, J. -M., Delisle, J. -B., Delorme, P., Dohlen, K., Doelman, D., Dominik, C., Orazi, V. D, Dougados, C., Doute, S., Fedele, D., Feldt, M., Ferreira, F., Fontanive, C., Fusco, T., Galicher, R., Garufi, A., Gendron, E., Ghedina, A., Ginski, C., Gonzalez, J. -F., Gratadour, D., Gratton, R., Guillot, T., Haffert, S., Hagelberg, J., Henning, T., Huby, E., Janson, M., Kamp, I., Keller, C., Kenworthy, M., Kervella, P., Kral, Q., Kuhn, J., Lagadec, E., Laibe, G., Langlois, M., Lagrange, A. -M., Launhardt, R., Leboulleux, L., Coroller, H. Le, Causi, G. Li, Loupias, M., Maire, A. L., Marleau, G., Martinache, F., Martinez, P., Mary, D., Mattioli, M., Mazoyer, J., Meheut, H., Menard, F., Mesa, D., Meunier, N., Miguel, Y., Milli, J., Min, M., Molliere, P., Mordasini, C., Moretto, G., Mugnier, L., Arena, G. Muro, Nardetto, N., Diaye, M. N, Nesvadba, N., Pedichini, F., Pinilla, P., Por, E., Potier, A., Quanz, S., Rameau, J., Roelfsema, R., Rouan, D., Rigliaco, E., Salasnich, B., Samland, M., Sauvage, J. -F., Schmid, H. -M., Segransan, D., Snellen, I., Snik, F., Soulez, F., Stadler, E., Stam, D., Tallon, M., Thebault, P., Thiebaut, E., Tschudi, C., Udry, S., van Holstein, R., Vernazza, P., Vidal, F., Vigan, A., Waters, R., Wildi, F., Willson, M., Zanutta, A., Zavagno, A., Zurlo, A.
SPHERE (Beuzit et al,. 2019) has now been in operation at the VLT for more than 5 years, demonstrating a high level of performance. SPHERE has produced outstanding results using a variety of operating modes, primarily in the field of direct imaging o
Externí odkaz:
http://arxiv.org/abs/2003.05714
We study the short and long-term variability of the spectroscopic binary SZ Pictoris, a southern RS CVn-type system. We used mid-resolution echelle spectra obtained at CASLEO spanning 18 years, and photometric data from the ASAS database V-band and f
Externí odkaz:
http://arxiv.org/abs/1910.11925
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
Almost three decades ago, Mathys (1990) demonstrated the importance of studying Ap stars showing resolved Zeeman split Fe II 6147.7 and 6149.2 lines. Such Zeeman split lines can be seen in stars whose projected rotational velocity is sufficiently sma
Externí odkaz:
http://arxiv.org/abs/1812.03462
Autor:
Tovmassian, G., Gonzalez, J. F., Hernandez, M. -S., Gonzalez-Buitrago, D., Zharikov, S., Santisteban, J. V. Hernandez
We obtained high-resolution spectra and multicolor photometry of V1082 Sgr to study the donor star in this 20.8 hr orbital period binary, which is assumed to be a detached system. We measured the rotational velocity (v sin i = 26.5+/-2.0 km/s), which
Externí odkaz:
http://arxiv.org/abs/1811.08049
Autor:
Flores, M., González, J. F., Arancibia, M. Jaque, Saffe, C., Buccino, A., López, F. M., Bustos, R. V Ibañez, Miquelarena, P.
Publikováno v:
A&A 620, A34 (2018)
Context. The detection of chromospheric activity cycles in solar-analogue and twin stars, can be used to put in context the solar cycle. However, there is a relatively low percentage of these stars with activity cycles detected. It is well known that
Externí odkaz:
http://arxiv.org/abs/1809.05581