Zobrazeno 1 - 10
of 337
pro vyhledávání: '"Platais, I."'
Autor:
Brogaard, K., Grundahl, F., Sandquist, E. L., Slumstrup, D., Jensen, M. L., Thomsen, J. B., Jørgensen, J. H., Larsen, J. R., Bjørn, S. T., Sørensen, C. T. G., Bruntt, H., Arentoft, T., Frandsen, S., Jessen-Hansen, J., Orosz, J. A., Mathieu, R., Geller, A., Ryde, N., Stello, D., Meibom, S., Platais, I.
Publikováno v:
A&A 649, A178 (2021)
Models of stellar structure and evolution can be constrained using accurate measurements of the parameters of eclipsing binary members of open clusters. Multiple binary stars provide the means to tighten the constraints and, in turn, to improve the p
Externí odkaz:
http://arxiv.org/abs/2104.14330
Autor:
Martocchia, S., Kamann, S., Saracino, S., Usher, C., Bastian1, N., Rejkuba, M., Latour, M., Lardo, C., Cabrera-Ziri, I., Dreizler, S., Kacharov, N., Kozhurina-Platais, V., Larsen, S., Mancino, S., Platais, I., Salaris, M.
Ancient ($>$10 Gyr) globular clusters (GCs) show chemical abundance variations in the form of patterns among certain elements, e.g. N correlates with Na and anti-correlates with O. Recently, N abundance spreads have also been observed in massive star
Externí odkaz:
http://arxiv.org/abs/2009.10023
Autor:
Saracino, S., Martocchia, S., Bastian, N., Kozhurina-Platais, V., Chantereau, W., Salaris, M., Cabrera-Ziri, I., Dalessandro, E., Kacharov, N., Lardo, C., Larsen, S. S., Platais, I.
Recent studies have revealed that the Multiple Populations (MPs) phenomenon does not occur only in ancient and massive Galactic globular clusters (GCs), but it is also observed in external galaxies, where GCs sample a wide age range with respect to t
Externí odkaz:
http://arxiv.org/abs/2003.01780
Autor:
Saracino, S., Bastian, N., Kozhurina-Platais, V., Cabrera-Ziri, I., Dalessandro, E., Kacharov, N., Lardo, C., Larsen, S. S., Mucciarelli, A., Platais, I., Salaris, M.
The discovery of star-to-star abundance variations (a.k.a. multiple populations - MPs) within globular clusters (GCs), which are generally not found in the field or in lower mass open clusters, has led to a search for the unique property of GCs that
Externí odkaz:
http://arxiv.org/abs/1909.02138
Autor:
Martocchia, S., Dalessandro, E., Lardo, C., Cabrera-Ziri, I., Bastian, N., Kozhurina-Platais, V., Salaris, M., Chantereau, W., Geisler, D., Hilker, M., Kacharov, N., Larsen, S., Mackey, D., Mucciarelli, A., Niederhofer, F., Platais, I., Usher, C.
In our HST photometric survey, we have been searching for multiple stellar populations (MPs) in Magellanic Clouds (MCs) massive star clusters which span a significant range of ages ($\sim 1.5-11$ Gyr). In the previous papers of the series, we have sh
Externí odkaz:
http://arxiv.org/abs/1906.03273
Autor:
Renzo, M., de Mink, S. E., Lennon, D. J., Platais, I., van der Marel, R. P., Laplace, E., Bestenlehner, J. M., Evans, C. J., Hénault-Brunet, V., Justham, S., de Koter, A., Langer, N., Najarro, F., Schneider, F. R. N., Vink, J. S.
How very massive stars form is still an open question in astrophysics. VFTS682 is among the most massive stars known, with an inferred initial mass of $\sim$150 $M_\odot$ . It is located in 30 Doradus at a projected distance of 29 pc from the central
Externí odkaz:
http://arxiv.org/abs/1810.05650
Autor:
Nardiello, D., Libralato, M., Piotto, G., Anderson, J., Bellini, A., Aparicio, A., Bedin, L. R., Cassisi, S., Granata, V., King, I. R., Lucertini, F., Marino, A. F., Milone, A. P., Ortolani, S., Platais, I., van der Marel, R. P.
In this paper we present the astro-photometric catalogues of 56 globular clusters and one open cluster. Astrometry and photometry are mainly based on images collected within the "HST Legacy Survey of Galactic Globular Clusters: Shedding UV Light on T
Externí odkaz:
http://arxiv.org/abs/1809.04300
Autor:
Brogaard, K., Christiansen, S. M., Grundahl, F., Miglio, A., Izzard, R. G., Tauris, T. M., Sandquist, E. L., VandenBerg, D. A., Jessen-Hansen, J., Arentoft, T., Bruntt, H., Frandsen, S., Orosz, J. A., Feiden, G. A., Mathieu, R., Geller, A., Shetrone, M., Ryde, N., Stello, D., Platais, I., Meibom, S.
We determine the properties of the binary star V106 in the old open cluster NGC6791. We identify the system to be a blue straggler cluster member by using a combination of ground-based and Kepler photometry and multi-epoch spectroscopy. The propertie
Externí odkaz:
http://arxiv.org/abs/1809.00705
Autor:
Lennon, D. J., Evans, C. J., van der Marel, R. P., Anderson, J., Platais, I., Herrero, A., de Mink, S. E., Sana, H., Sabbi, E., Bedin, L. R., Crowther, P. A., Langer, N., Lerate, M. Ramos, del Pino, A., Renzo, M., Simón-Díaz, S., Schneider, F. R. N.
Publikováno v:
A&A 619, A78 (2018)
A previous spectroscopic study identified the very massive O2 III star VFTS 16 in the Tarantula Nebula as a runaway star based on its peculiar line-of-sight velocity. We use the Gaia DR2 catalog to measure the relative proper motion of VFTS 16 and ne
Externí odkaz:
http://arxiv.org/abs/1805.08277
Autor:
Platais, I., Lennon, D. J., van der Marel, R. P., Bellini, A., Sabbi, E., Watkins, L. L., Sohn, S. T., Walborn, N. R., Bedin, L. R., Evans, C. J., de Mink, S. E., Sana, H., Herrero, A., Langer, N., Crowther, P.
We present a catalog of relative proper motions for 368,787 stars in the 30 Doradus region of the Large Magellanic Cloud (LMC), based on a dedicated two-epoch survey with the Hubble Space Telescope (HST) and supplemented with proper motions from our
Externí odkaz:
http://arxiv.org/abs/1804.08678