Zobrazeno 1 - 10
of 32
pro vyhledávání: '"de Almeida, E. S."'
Autor:
de Almeida, E. S. G., Hugbart, Mathilde, de Souza, Armando Domiciano, Rivet, Jean-Pierre, Vakili, Farrokh, Siciak, Antonin, Labeyrie, Guillaume, Garde, Olivier, Matthews, Nolan, Lai, Olivier, Vernet, David, Kaiser, Robin, Guerin, William
In this paper we report on spatial intensity interferometry measurements within the H$\alpha$ line on two stars: the Luminous Blue Variable supergiant \PCygni\,and the late-type B supergiant Rigel. The experimental setup was upgraded to allow simulta
Externí odkaz:
http://arxiv.org/abs/2204.00372
Autor:
Hadjara, M., Petrov, R. G., Jankov, S., Cruzalèbes, P., Boskri, A., Spang, A., Lagarde, S., He, J., Chen, X., Nitschelm, C., de Almeida, E. S. G., Pereira, G., Michael, E. A., Gao, Q., Wang, W., Reyes, I., Arcos, C., Araya, I., Curé, M.
Publikováno v:
MNRAS 511, 4724-4740 (2022)
Differential Interferometry allows to obtain the differential visibility and phase, in addition to the spectrum. The differential phase contains important information about the structure and motion of stellar photosphere such as stellar spots and non
Externí odkaz:
http://arxiv.org/abs/2203.10372
Disks and winds around hot stars: new insights from multi-wavelength spectroscopy and interferometry
Autor:
de Almeida, E. S. G.
Hot stars are the main source of ionization of the interstellar medium and its enrichment due to heavy elements. Constraining the physical conditions of their environments is crucial to understand how these stars evolve and their impact on the evolut
Externí odkaz:
http://arxiv.org/abs/2103.09968
Visible and near-infrared spectro-interferometric analysis of the edge-on Be star $\omicron$ Aquarii
Autor:
de Almeida, E. S. G., Meilland, A., de Souza, A. Domiciano, Stee, P., Mourard, D., Nardetto, N., Ligi, R., Tallon-Bosc, I., Faes, D. M., Carciofi, A. C., Bednarski, D., Mota, B. C., Turner, N., Brummelaar, T. A. ten
Publikováno v:
A&A 636, A110 (2020)
We present a detailed visible and near-IR spectro-interferometric analysis of the Be-shell star $\omicron$ Aquarii from quasi-contemporaneous CHARA/VEGA and VLTI/AMBER observations. We measured the stellar radius of $\omicron$ Aquarii as 4.0 $\pm$ 0.
Externí odkaz:
http://arxiv.org/abs/2002.09552
Autor:
Rivet, J. -P., Siciak, A., de Almeida, E. S. G., Vakili, F., de Souza, A. Domiciano, Fouché, M., Lai, O., Vernet, D., Kaiser, R., Guerin, W.
We present intensity interferometry of the luminous blue variable P Cyg in the light of its H$\alpha$ emission performed with 1\,m-class telescopes. We compare the measured visibility points to synthesized interferometric data based on the CMFGEN phy
Externí odkaz:
http://arxiv.org/abs/1910.08366
Publikováno v:
A&A 628, A36 (2019)
Analyses of Galactic late O dwarfs (O8-O9.5V) raised the `weak wind problem': spectroscopic mass loss rates ($\dot{M}$) are up to two orders of magnitude lower than the theoretical values. We investigated the stellar and wind properties of Galactic l
Externí odkaz:
http://arxiv.org/abs/1903.07937
Autor:
Guerin, W., Rivet, J. -P., Hugbart, M., F. Vakili, de Almeida, E. S. G., Domiciano de Souza, A., Labeyrie, G., Matthews, N., Lai, O., Gori, P. -M., Vernet, D., Chabé, J., Courde, C., Samain, E., Castilho, B. V., Magalhaes, A. M., Janot-Pacheco, E., Carciofi, A., Bourget, P., Schuhler, N., Kaiser, R.
Publikováno v:
SF2A-2021: Proceedings of the Annual meeting of the French Society of Astronomy and Astrophysics. Eds.: A. Siebert, K. Baillié, E. Lagadec, N. Lagarde, J. Malzac, J.-B. Marquette, M. N'Diaye, J. Richard, O. Venot, 2021, pp.331-334
SF2A-2021: Proceedings of the Annual meeting of the French Society of Astronomy and Astrophysics
SF2A-2021: Proceedings of the Annual meeting of the French Society of Astronomy and Astrophysics, A. Siebert, K. Baillié, E. Lagadec, N. Lagarde, J. Malzac, J.-B. Marquette, M. N'Diaye, J. Richard, O. Venot, Jun 2021, Online, France. pp.331-334
SF2A-2021: Proceedings of the Annual meeting of the French Society of Astronomy and Astrophysics
SF2A-2021: Proceedings of the Annual meeting of the French Society of Astronomy and Astrophysics, A. Siebert, K. Baillié, E. Lagadec, N. Lagarde, J. Malzac, J.-B. Marquette, M. N'Diaye, J. Richard, O. Venot, Jun 2021, Online, France. pp.331-334
National audience; We present our project on the revival of intensity interferometry with modern photonic technologies, and more specifically with conventional optical telescopes. This original approach is complementary to the work currently done aim
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::4e3750b5eb40d1ed660c832260859328
Autor:
De Almeida, E. S. G.
Hot stars are the main source of ionization of the interstellar medium and its enrichment due to heavy elements. Constraining the physical conditions of their environments is crucial to understand how these stars evolve and their impact on the evolut
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::d97116ff7ac5dd04879eb8e56026c643
Autor:
de Almeida, E S G, Hugbart, M, Domiciano de Souza, A, Rivet, J-P, Vakili, F, Siciak, A, Labeyrie, G, Garde, O, Matthews, N, Lai, O, Vernet, D, Kaiser, R, Guerin, W
Publikováno v:
Monthly Notices of the Royal Astronomical Society; Sep2022, Vol. 515 Issue 1, p1-12, 12p
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