Zobrazeno 1 - 10
of 466
pro vyhledávání: '"Hutsemékers D"'
Lensed quasars are powerful cosmic laboratories; they are used to simultaneously probe various astrophysical phenomena. Microlensing by stars within distant galaxies acts as strong gravitational lenses of multiply imaged quasars, and provides a uniqu
Externí odkaz:
http://arxiv.org/abs/2405.09303
Autor:
Marin, F., Hutsemékers, D., Liodakis, I., Antonucci, R., Mandarakas, N., Lindfors, E., Blinov, D., Barnouin, T., Savic, D.
The growth of supermassive black holes (SMBHs) through merging has long been predicted but its detection remains elusive. However, a promising target has been discovered in the Seyfert-1 galaxy J1430+2303. If a binary system truly lies at the center
Externí odkaz:
http://arxiv.org/abs/2304.05003
Autor:
Moulane, Y., Jehin, E., Manfroid, J., Hutsemékers, D., Opitom, C., Shinnaka, Y., Bodewits, D., Benkhaldoun, Z., Jabiri, A., Hmiddouch, S., Donckt, M. Vander, Pozuelos, F. J., Yang, B.
Publikováno v:
A&A 670, A159 (2023)
Hyperactive comets are a small group of comets whose activity are higher than expected. They seem to emit more water than they should based on the size of their nucleus and comet 46P/Wirtanen is one of them. Investigating its activity and composition
Externí odkaz:
http://arxiv.org/abs/2301.10954
Autor:
Opitom, C., Jehin, E., Hutsemékers, D., Shinnaka, Y., Manfroid, J., Rousselot, P., Raghuram, S., Kawakita, H., Fitzsimmons, A., Meech, K., Micheli, M., Snodgrass, C., Yang, B., Hainaut, O.
2I/Borisov - hereafter 2I - is the first visibly active interstellar comet observed in the solar system, allowing us for the first time to sample the composition of a building block from another system. We report on the monitoring of 2I with UVES, th
Externí odkaz:
http://arxiv.org/abs/2106.04431
Autor:
Mahy, L., Lanthermann, C., Hutsemékers, D., Kluska, J., Lobel, A., Manick, R., Miszalski, B., Reggiani, M., Sana, H., Gosset, E.
Publikováno v:
A&A 657, A4 (2022)
Context. Luminous Blue Variables (LBVs) are thought to be in a transitory phase between O stars on the main-sequence and the Wolf-Rayet stage. Recent studies suggest that they might be formed through binary interaction. Only a few are known in binary
Externí odkaz:
http://arxiv.org/abs/2105.12380
Photometry and high-resolution spectroscopy of comet 21P/Giacobini-Zinner during its 2018 apparition
Autor:
Moulane, Y., Jehin, E., Rousselot, P., Manfroid, J., Shinnaka, Y., Pozuelos, F. J., Hutsemékers, D., Opitom, C., Yang, B., Benkhaldoun, Z.
Publikováno v:
A&A 640, A54 (2020)
We report on photometry and high resolution spectroscopy of the chemically peculiar Jupiter-family Comet (hereafter JFC) 21P/Giacobini-Zinner. Comet 21P is a well known member of the carbon-chain depleted family but displays also a depletion of amine
Externí odkaz:
http://arxiv.org/abs/2006.05017
Autor:
Marin, F., Hutsemékers, D.
Context: Variations in the mass accretion rate appear to be responsible for the rapid transitions in spectral type that are observed in increasingly more active galactic nuclei (AGNs). These objects are now labeled "changing-look" AGNs and are key ob
Externí odkaz:
http://arxiv.org/abs/2003.08641
Publikováno v:
A&A 635, A108 (2020)
The N$_2$ and CO-rich and water-depleted comet C/2016 R2 (Pan-STARRS) (hereafter `C/2016 R2') is a unique comet for detailed spectroscopic analysis. We aim to explore the associated photochemistry of parent species, which produces different metastabl
Externí odkaz:
http://arxiv.org/abs/2001.03315
Publikováno v:
EPJ Web of Conferences, Vol 11, p 06002 (2011)
We present here a new robotic telescope called TRAPPIST1 (TRAnsiting Planets and PlanetesImals Small Telescope). Equipped with a high-quality CCD camera mounted on a 0.6 meter light weight optical tube, TRAPPIST has been installed in April 2010 at th
Externí odkaz:
https://doaj.org/article/4a4cf7e01b47441cbdfdf625cce142dd
Publikováno v:
A&A 633, A101 (2020)
Gravitational microlensing is a powerful tool for probing the inner structure of distant quasars. In this context, we have obtained spectropolarimetric observations of the two images of the broad absorption line (BAL) quasar SDSSJ081830.46+060138.0 (
Externí odkaz:
http://arxiv.org/abs/1912.04336