Zobrazeno 1 - 10
of 174
pro vyhledávání: '"Ratzka, T."'
Autor:
Panić, O., Haworth, T. J., Petr-Gotzens, M. G., Miley, J., Ancker, M. van den, Vioque, M., Siess, L., Parker, R., Clarke, C. J., Kamp, I., Kennedy, G., Oudmaijer, R. D., Pascucci, I., Richards, A. M. S., Ratzka, T., Qi, C.
We report the first characterisation of the individual discs in the intermediate separation binary systems KK Oph and HD 144668 at millimetre wavelengths. In both systems the circum-primary and the circum-secondary discs are detected in the millimetr
Externí odkaz:
http://arxiv.org/abs/2012.07901
Multi-epoch observations have revealed the variability of pre-main sequence stars and/or their environment. Moreover, structures in orbital motion around the central star, resulting from planet-disk interaction, are predicted to cause temporal variat
Externí odkaz:
http://arxiv.org/abs/2008.08374
Autor:
Miley, J., Panić, O., Haworth, T. J., Pascucci, I., Wyatt, M., Clarke, C., Richards, A. M. S., Ratzka, T.
In this paper we present new ALMA observations towards the proto-planet hosting transitional disc of Herbig Ae/Be star HD 100546. This includes resolved 1.3 mm continuum, $^{13}$CO and the first detection of C$^{18}$O in this disc, which displays azi
Externí odkaz:
http://arxiv.org/abs/1902.07506
Autor:
Davies, R., Schubert, J., Hartl, M., Alves, J., Clénet, Y., Lang-Bardl, F., Nicklas, H., Pott, J. -U., Ragazzoni, R., Tolstoy, E., Agocs, T., Anwand-Heerwart, H., Barboza, S., Baudoz, P., Bender, R., Bizenberger, P., Boccaletti, A., Boland, W., Bonifacio, P., Briegel, F., Buey, T., Chapron, F., Cohen, M., Czoske, O., Dreizler, S., Falomo, R., Feautrier, P., Schreiber, N. Förster, Gendron, E., Genzel, R., Glück, M., Gratadour, D., Greimel, R., Grupp, F., Häuser, M., Haug, M., Hennawi, J., Hess, H. -J., Hörmann, V., Hofferbert, R., Hopp, U., Hubert, Z., Ives, D., Kausch, W., Kerber, F., Kravcar, H., Kuijken, K., Leitzinger, M., Leschinski, K., Massari, D., Mei, S., Merlin, F., Mohr, L., Monna, A., Müller, F., Navarro, R., Plattner, M., Przybilla, N., Ramlau, R., Ramsay, S., Ratzka, T., Rhode, P., Richter, J., Rix, H. -W., Rodeghiero, G., Rohloff, R. -R., Rousset, G., Ruddenklau, R., Schaffenroth, V., Schlichter, J., Sevin, A., Stuik, R., Sturm, E., Thomas, J., Tromp, N., Turatto, M., Verdoes-Kleijn, G., Vidal, F., Wagner, R., Wegner, M., Zeilinger, W., Ziegler, B., Zins, G.
MICADO will equip the E-ELT with a first light capability for diffraction limited imaging at near-infrared wavelengths. The instrument's observing modes focus on various flavours of imaging, including astrometric, high contrast, and time resolved. Th
Externí odkaz:
http://arxiv.org/abs/1607.01954
Autor:
Scicluna, P., Wolf, S., Ratzka, T., Costigan, G., Launhardt, R., Leinert, C., Ober, F., Manara, C. F., Testi, L.
Given that a majority of stars form in multiple systems, in order to fully understand the star- and planet-formation processes we must seek to understand them in multiple stellar systems. With this in mind, we present an analysis of the enigmatic bin
Externí odkaz:
http://arxiv.org/abs/1602.07380
Publikováno v:
A&A 587, A35 (2016)
We present new astrometric measurements of the components in the T Tauri system, and derive new orbits and masses. T Tauri was observed during the science verification time of the new extreme adaptive optics facility SPHERE at the VLT. We combine the
Externí odkaz:
http://arxiv.org/abs/1512.05736
Autor:
Roccatagliata, V., Dale, J. E., Ratzka, T., Testi, L., Burkert, A., Koepferl, C., Sicilia-Aguilar, A., Eiroa, C., Gaczkowski, B.
Filaments represent a key structure during the early stages of the star formation process. Simulations show filamentary structure commonly formed before and during the formation of cores. Aims. The Serpens Core represents an ideal laboratory to test
Externí odkaz:
http://arxiv.org/abs/1509.06216
(abridged) We used the Chandra observatory to perform a deep (70 ksec) X-ray observation of the Gum 31 region and detected 679 X-ray point sources. This extends and complements the X-ray survey of the central Carina nebula regions performed in the Ch
Externí odkaz:
http://arxiv.org/abs/1403.7047
We aim to improve the orbital elements and determine the individual masses of the components in the triple system TWA 5. Five new relative astrometric positions in the H band were recorded with the adaptive optics system at the Very Large Telescope (
Externí odkaz:
http://arxiv.org/abs/1309.1073
We investigate the structure of the innermost region of three circumstellar disks around pre-main sequence stars HD 142666, AS 205 N, and AS 205 S. We determine the inner radii of the dust disks and, in particular, search for transition objects where
Externí odkaz:
http://arxiv.org/abs/1305.2681