No detection of Strange Mode Pulsations in massive prime candidate

Autor: Chené, André-Nicolas, St-Louis, Nicole, Moffat, Anthony F. J., Schnurr, Olivier, Artigau, Étienne

The most violent strange mode pulsations (SMPs) are expected in classical WR stars, the bare, compact helium-burning cores of evolved massive stars, where SMPs are predicted to manifest themselves in cyclic photometric variability with periods rangin

Externí odkaz: http://arxiv.org/abs/1809.03558

An overlooked brown dwarf neighbour (T7.5 at d~5pc) of the Sun and two additional T dwarfs at about 10pc

Autor: Bihain, Gabriel, Scholz, Ralf-Dieter, Storm, Jesper, Schnurr, Olivier

Publikováno v: A&A 557, A43 (2013)

Although many new brown dwarf (BD) neighbours have recently been discovered thanks to new sky surveys in the mid- and near-infrared (MIR, NIR), their numbers are still more than five times lower than those of stars in the same volume. Our aim is to d

Externí odkaz: http://arxiv.org/abs/1307.2722

4MOST - 4-metre Multi-Object Spectroscopic Telescope

Autor: de Jong, Roelof S., Bellido-Tirado, Olga, Chiappini, Cristina, Depagne, Éric, Haynes, Roger, Johl, Diane, Schnurr, Olivier, Schwope, Axel, Walcher, Jakob, Dionies, Frank, Haynes, Dionne, Kelz, Andreas, Kitaura, Francisco S., Lamer, Georg, Minchev, Ivan, Müller, Volker, Nuza, Sebastián E., Olaya, Jean-Christophe, Piffl, Tilmann, Popow, Emil, Steinmetz, Matthias, Ural, Uğur, Williams, Mary, Winkler, Roland, Wisotzki, Lutz, Ansorgb, Wolfgang R., Banerji, Manda, Solares, Eduardo Gonzalez, Irwin, Mike, Kennicutt Jr, Robert C., King, David, McMahon, Richard, Koposov, Sergey, Parry, Ian R., Walton, Nicholas A., Finger, Gert, Iwert, Olaf, Krumpe, Mirko, Lizon, Jean-Louis, Vincenzo, Mainieri, Amans, Jean-Philippe, Bonifacio, Piercarlo, Cohen, Mathieu, Francois, Patrick, Jagourel, Pascal, Mignot, Shan B., Royer, Frédéric, Sartoretti, Paola, Bender, Ralf, Grupp, Frank, Hess, Hans-Joachim, Lang-Bardl, Florian, Muschielok, Bernard, Böhringer, Hans, Boller, Thomas, Bongiorno, Angela, Brusa, Marcella, Dwelly, Tom, Merloni, Andrea, Nandra, Kirpal, Salvato, Mara, Pragt, Johannes H., Navarro, Ramón, Gerlofsma, Gerrit, Roelfsema, Ronald, Dalton, Gavin B., Middleton, Kevin F., Tosh, Ian A., Boeche, Corrado, Caffau, Elisabetta, Christlieb, Norbert, Grebel, Eva K., Hansen, Camilla, Koch, Andreas, Ludwig, Hans-G., Quirrenbach, Andreas, Sbordone, Luca, Seifert, Walter, Thimm, Guido, Trifonov, Trifon, Helmi, Amina, Trager, Scott C., Feltzing, Sofia, Korn, Andreas, Boland, Wilfried

The 4MOST consortium is currently halfway through a Conceptual Design study for ESO with the aim to develop a wide-field (>3 square degree, goal >5 square degree), high-multiplex (>1500 fibres, goal 3000 fibres) spectroscopic survey facility for an E

Externí odkaz: http://arxiv.org/abs/1206.6885

Life and Death of Very Massive Stars

Autor: Yusof, Norhasliza, Kassima, Hasan Abu, Hirschi, Raphael, Crowther, Paul. A., Schnurr, Olivier, Parkerd, Richard J., Goodwin, Simon P.

We recently determined the mass of the most massive star known to the date, R136a1 with a mass at birth 320 times the mass of our sun, as well as the mass of several other stars that are more massive than 150 M. Such massive stars (~150-300 M) may en

Externí odkaz: http://arxiv.org/abs/1012.3649

4MOST Survey Strategy Plan

Autor: Guiglion, Guillaume, Battistini, Chiara, Bell, Cameron P. M., Bensby, Thomas, Boller, Thomas, Chiappini, Cristina, Comparat, Johan, Christlieb, Norbert, Church, Ross, Cioni, Maria-Rosa L., Davies, Luke, Dwelly, Tom, De Jong, Roelof S., Feltzing, Sofia, Gueguen, Alain, Howes, Louise, Irwin, Mike, Kushniruk, Iryna, Lam, Man I, Liske, Jochen, McMahon, Richard, Merloni, Andrea, Norberg, Peder, Robotham, Aaron S. G., Schnurr, Olivier, Sorce, Jenny G., Starkenburg, Else, Storm, Jesper, Swann, Elizabeth, Tempel, Elmo, Thi, Wing-Fai, Worley, C. Clare, Walcher, C. Jakob, The 4MOST Collaboration

The current status of and motivation for the 4MOST survey strategy, as developed by the Consortium science team, are presented here. Key elements of the strategy are described, such as sky coverage, number of visits and total exposure times in differ

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=sygma_______::3cf158e0c84a1b419f302946fee4438a
https://doi.org/10.18727/0722-6691/5119