Zobrazeno 1 - 10
of 188
pro vyhledávání: '"Eenens, P."'
Autor:
Quintero, Edwin A, Eenens, Philippe
Publikováno v:
MNRAS, Volume 532, Issue 2, August 2024, Pages 2604-2614
The massive binary HDE 228766 is composed of an O type primary and an evolved secondary. However, previous qualitative analyses of the composite spectrum have led to a wide discussion about whether the secondary is an Of or a Wolf-Rayet star. We use
Externí odkaz:
http://arxiv.org/abs/2407.16816
HD165052 is a short-period massive eccentric binary system that undergoes apsidal motion. As the rate of apsidal motion is directly related to the internal structure constants of the binary components, its study allows to get insight into the interna
Externí odkaz:
http://arxiv.org/abs/2303.07214
Autor:
De Arcia, Roberto, Quiros, Israel, Nucamendi, Ulises, Gonzalez, Tame, Horta-Rangel, Francisco Antonio, Eenens, Philippe
Publikováno v:
Phys. Dark Univ. 40 (2023) 101183
In this paper we perform a thorough dynamical systems analysis of the cubic galileon model non-minimally coupled to the dark matter. Three well-known classes of interacting models are considered where the energy exchange between the dark components i
Externí odkaz:
http://arxiv.org/abs/2206.14333
Autor:
Harmanec, P., Božić, H., Koubský, P., Yang, S., Ruždjak, D., Sudar, D., Šlechta, M., Wolf, M., Korčáková, D., Zasche, P., Oplištilová, A., Vršnak, D., Ak, H., Eenens, P., Bakiş, H., Bakiş, V., Otero, S., Chini, R., Demsky, T., Barlow, B. N., Svoboda, P., Jonák, J., Vitovský, K., Harmanec, A.
Publikováno v:
A&A 666, A136 (2022)
A reliable determination of the basic physical properties and variability patterns of hot emission-line stars is important for understanding the Be phenomenon and ultimately, the evolutionary stage of Be stars. This study is devoted to one of the mos
Externí odkaz:
http://arxiv.org/abs/2206.11649
Publikováno v:
Astronomische Nachrichten, 341(6-7), 628-637 (2020)
Disentangling techniques are often needed to obtain the spectra of the individual components of binary or multiple systems. A thorough analysis of the shift-and-add algorithm of Marchenko, Moffat, & Eenens (1998) reveals that in many cases the line f
Externí odkaz:
http://arxiv.org/abs/2010.01181
Autor:
Jack, Dennis, Schröder, Klaus-Peter, Eenens, Philippe, Wolter, Uwe, González-Pérez, José Nicolás, Schmitt, Jürgen H. M. M., Hauschildt, Peter H.
With our robotic 1.2 m TIGRE telescope, we were able to obtain eight optical spectra with intermediate resolution (R = 20,000) of the Nova V659 Sct during different phases of its outburst. We present a list of the lines found in the Nova spectra. The
Externí odkaz:
http://arxiv.org/abs/2006.14052
Publikováno v:
A&A 607, A96 (2017)
Aims. HD166734 is an eccentric eclipsing binary system composed of two supergiant O-type stars, orbiting with a 34.5-day period. In this rare configuration for such stars, the two objects mainly evolve independently, following single-star evolution s
Externí odkaz:
http://arxiv.org/abs/1707.02060
Autor:
Jack, D., Pérez, J. de J. Robles, Aquino, I. De Gennaro, Schröder, K. -P., Wolter, U., Eenens, P., Schmitt, J. H. M. M., Mittag, M., Hempelmann, A., González-Pérez, J. N., Rauw, G., Hauschildt, P. H.
We present results of our dense spectroscopic monitoring of Nova V5668 Sgr. Starting on March 19 in 2015, only a few days after discovery, we have obtained a series of spectra with the TIGRE telescope and its HEROS echelle spectrograph which offers a
Externí odkaz:
http://arxiv.org/abs/1702.01171
Autor:
Rauw, G., Herve, A., Naze, Y., Gonzalez-Perez, J. N., Hempelmann, A., Mittag, M., Schmitt, J. H. M. M., Schroeder, K. -P., Gosset, E., Eenens, P., Uuh-Sonda, J. M.
Publikováno v:
A&A 580, A59 (2015)
Probing the structures of stellar winds is of prime importance for the understanding of massive stars. Based on their optical spectral morphology and variability, the stars of the Oef class have been suggested to feature large-scale structures in the
Externí odkaz:
http://arxiv.org/abs/1505.07714
Aims. Having established the binary status of nineteen O-type stars located in four Cygnus OB associations, we now determine their fundamental parameters to constrain their properties and their evolutionary status. We also investigate their surface n
Externí odkaz:
http://arxiv.org/abs/1504.03107