Zobrazeno 1 - 10
of 460
pro vyhledávání: '"Hummel, C."'
Autor:
Chojnowski, S. Drew, Hubrig, Swetlana, Labadie-Bartz, Jonathan, Rivinius, Thomas, Scholler, Markus, Niemczura, Ewa, Nidever, David L., Stutz, Amelia M., Hummel, C. A.
We report the discovery of a new example of the rare class of highly magnetized, rapidly rotating, helium enhanced, early B stars that produce anomalously wide hydrogen emission due to a centrifugal magnetosphere (CM). The star is Trumpler 16-26, a B
Externí odkaz:
http://arxiv.org/abs/2208.12722
Autor:
Sanchez-Bermudez, J., Hummel, C. A., Díaz-López, J., Alberdi, A., Schödel, R., Arias, J. I., Barbá, R. H., Bastida-Escamilla, E., Brandner, W., Apellániz, J. Maíz, Pott, J. -U.
Multiplicity is a ubiquitous characteristic of massive stars. Multiple systems offer us a unique observational constraint on the formation of high-mass systems. Herschel 36 A is a massive triple system composed of a close binary (Ab1-Ab2) and an oute
Externí odkaz:
http://arxiv.org/abs/2204.13075
The O9.7 V star HD 54879 is currently the only massive magnetic star whose magnetic field geometry and rotation period are not constrained. Over the last three years, we gathered additional observations of this star, obtained using various instrument
Externí odkaz:
http://arxiv.org/abs/2112.14362
Autor:
Pavlovski, K., Hummel, C. A., Tkachenko, A., Dervisoglu, A., Kayhan, C., Zavala, R. T., Hutter, D. J., Tycner, C., Sahin, T., Audenaert, J., Baeyens, R., Bodensteiner, J., Bowman, D. M., Gebruers, S., Jannsen, N. E., Mombarg, J. S. G.
Publikováno v:
A&A 658, A92 (2022)
Altough both components of the bright eclipsing binary $\alpha$ Dra having been resolved using long baseline interferometry and the secondary component shown to contribute some 15\% of the total flux, a spectroscopic detection of the companion star w
Externí odkaz:
http://arxiv.org/abs/2111.03887
Autor:
Lopez, B., Lagarde, S., Petrov, R. G., Jaffe, W., Antonelli, P., Allouche, F., Berio, P., Matter, A., Meilland, A., Millour, F., Robbe-Dubois, S., Henning, Th., Weigelt, G., Glindemann, A., Agocs, T., Bailet, Ch., Beckmann, U., Bettonvil, F., van Boekel, R., Bourget, P., Bresson, Y., Bristow, P., Cruzalèbes, P., Eldswijk, E., Caujolle, Y. Fanteï, Herrera, J. C. González, Graser, U., Guajardo, P., Heininger, M., Hofmann, K. -H., Kroes, G., Laun, W., Lehmitz, M., Leinert, C., Meisenheimer, K., Morel, S., Neumann, U., Paladini, C., Percheron, I., Riquelme, M., Schoeller, M., Stee, Ph., Venema, L., Woillez, J., Zins, G., Ábrahám, P., Abadie, S., Abuter, R., Accardo, M., Adler, T., Alonso, J., Augereau, J. -C., Böhm, A., Bazin, G., Beltran, J., Bensberg, A., Boland, W., Brast, R., Burtscher, L., Castillo, R., Chelli, A., Cid, C., Clausse, J. -M., Connot, C., Conzelmann, R. D., Danchi, W. -C., Delbo, M., Drevon, J., Dominik, C., van Duin, A., Ebert, M., Eisenhauer, F., Flament, S., Frahm, R., Rosas, V. Gámez, Gabasch, A., Gallenne, A., Garces, E., Girard, P., Glazenborg, A., Gonté, F. Y. J., Guitton, F., de Haan, M., Hanenburg, H., Haubois, X., Hocdé, V., Hogerheijde, M., ter Horst, R., Hron, J., Hummel, C. A., Hubin, N., Huerta, R., Idserda, J., Isbell, J. W., Ives, D., Jakob, G., Jaskó, A., Jochum, L., Klarmann, L., Klein, R., Kragt, J., Kuindersma, S., Kokoulina, E., Labadie, L., Lacour, S., Leftley, J., Poole, R. Le, Lizon, J. -L., Lopez, M., Mérand, A., Marcotto, A., Mauclert, N., Maurer, T., Mehrgan, L. H., Meisner, J., Meixner, K., Mellein, M., Menut, J. L., Mohr, L., Mosoni, L., Navarro, R., Nussbaum, E., Pallanca, L., Pantin, E., Pasquini, L., Duc, T. Phan, Pott, J. -U., Pozna, E., Richichi, A., Ridinger, A., Rigal, F., Rivinius, Th., Roelfsema, R., Rohloff, R. -R., Rousseau, S., Salabert, D., Schertl, D., Schuhler, N., Schuil, M., Shabun, K., Soulain, A., Stephan, C., Toledo, P., Tristram, K., Tromp, N., Vakili, F., Varga, J., Vinther, J., Waters, L. B. F. M., Wittkowski, M., Wolf, S., Wrhel, F., Yoffe, G.
Publikováno v:
A&A 659, A192 (2022)
Context:Optical interferometry is at a key development stage. ESO's VLTI has established a stable, robust infrastructure for long-baseline interferometry for general astronomical observers. The present second-generation instruments offer a wide wavel
Externí odkaz:
http://arxiv.org/abs/2110.15556
Publikováno v:
Astrophysical Journal Supplement Series (2021)
We present the results of a multiplicity survey for a magnitude-limited sample of 31 classical Be stars conducted with the Navy Precision Optical Interferometer and the Mark III Stellar Interferometer. The interferometric observations were used to de
Externí odkaz:
http://arxiv.org/abs/2109.06839
Autor:
Kokoulina, E., Matter, A., Lopez, B., Pantin, E., Ysard, N., Weigelt, G., Habart, E., Varga, J., Jones, A., Meilland, A., Dartois, E., Klarmann, L., Augereau, J. -C., van Boekel, R., Hogerheijde, M., Yoffe, G., Waters, L. B. F. M., Dominik, C., Jaffe, W., Millour, F., Henning, Th., Hofmann, K. -H., Schertl, D., Lagarde, S., Petrov, R. G., Antonelli, P., Allouche, F., Berio, P., Robbe-Dubois, S., Abraham, P., Beckmann, U., Bensberg, A., Bettonvil, F., Bristow, P., Cruzalèbes, P., Danchi, W. C., Dannhoff, M., Graser, U., Heininger, M., Labadie, L., Lehmitz, M., Leinert, C., Meisenheimer, K., Paladini, C., Percheron, I., Stee, Ph., Woillez, J., Wolf, S., Zins, G., Delbo, M., Drevon, J., Duprat, J., Rosas, V. Gámez, Hocdé, V., Hron, J., Hummel, C. A., Isbell, J. W., Leftley, J., Soulain, A., Vakili, F., Wittkowski, M.
Publikováno v:
A&A 652, A61 (2021)
Carbon is one of the most abundant components in the Universe. While silicates have been the main focus of solid phase studies in protoplanetary discs (PPDs), little is known about the solid carbon content especially in the planet-forming regions ($\
Externí odkaz:
http://arxiv.org/abs/2106.12947
Autor:
Schöller, M., Hummel, C. A., Hubrig, S., Kurtz, D. W., Mathys, G., Robrade, J., Jarvinen, S. P.
Publikováno v:
A&A 642, A188 (2020)
The Bp star HD94660 is a single-lined spectroscopic binary. Some authors have suggested that the unseen companion of at least 2M_sun may be a compact object. We intend to study this multiple system in detail, especially to learn more about the so-far
Externí odkaz:
http://arxiv.org/abs/2009.07060
The first FORS2 spectropolarimetric observation of the longitudinal magnetic field of HD54879 of the order of -600G with a lower limit of the dipole strength of ~2kG dates back to 2014. Since then observations showed a gradual decrease of the absolut
Externí odkaz:
http://arxiv.org/abs/1910.13209
Autor:
Sanchez-Bermudez, J., Alberdi, A., Schödel, R., Brandner, W., Galván-Madrid, R., Guirado, J. C., Herrero-Illana, R., Hummel, C. A., Marcaide, J. M., Pérez-Torres, M. A.
Publikováno v:
A&A 624, A55 (2019)
Context. Colliding winds in massive binaries are able to accelerate particles up to relativistic speeds as the result of the interaction between the winds of the different stellar components. HD 167971 exhibits this phenomenology which makes it a str
Externí odkaz:
http://arxiv.org/abs/1901.10101