Zobrazeno 1 - 10
of 798
pro vyhledávání: '"Ratzka, A."'
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
Publikováno v:
Origins: From the Protosun to the First Steps of Life. Proceedings of the International Astronomical Union, Volume 345, pp. 128-131 (2020)
We present our results from a mid-infrared interferometric survey targeted at the planet-forming region in the circumstellar disks around low- and intermediate-mass young stars. Our sample consist of 82 objects, including T Tauri stars, Herbig Ae sta
Externí odkaz:
http://arxiv.org/abs/2002.05543
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:
Jamialahmadi, Narges, Ratzka, Thorsten, Panic, Olja, Fathivavsari, Hassan, Van Boekel, Roy, Flement, Sebastien, Hening, Thomas, Jaffe, Walter, Mulders, Gijs
We refine the gap size measurements of the disk surrounding the Herbig Ae star HD 100546 in the N band. Our new mid-infrared interferometric (MIDI) data have been taken with the UT baselines and span the full range of orientations. The correlated flu
Externí odkaz:
http://arxiv.org/abs/1808.05052
Autor:
Varga, J., Ábrahám, P., Chen, L., Ratzka, Th., Gabányi, K. É., Kóspál, Á., Matter, A., van Boekel, R., Henning, Th., Jaffe, W., Juhász, A., Lopez, B., Menu, J., Moór, A., Mosoni, L., Sipos, N.
Publikováno v:
A&A 617, A83 (2018)
Context. Protoplanetary disks show large diversity regarding their morphology and dust composition. With mid-infrared interferometry the thermal emission of disks can be spatially resolved, and the distribution and properties of the dust within can b
Externí odkaz:
http://arxiv.org/abs/1805.02939
Autor:
Jamialahmadi, Narges, Lopez, Bruno, Berio, Philippe, Matter, Alexis, Flament, Sebastien, Fathivavsari, Hassan, Ratzka, Thorsten, Sitko, Mike L., Spang, Alain, Russell, R. W.
Studying the physical conditions structuring the young circumstellar disks is required for understanding the onset of planet formation. Of particular interest is the protoplanetary disk surrounding the Herbig star MWC480. The structure and properties
Externí odkaz:
http://arxiv.org/abs/1709.08921
Autor:
Varga, J., Gabányi, K. É., Ábrahám, P., Chen, L., Kóspál, Á., Menu, J., Ratzka, Th., van Boekel, R., Dullemond, C. P., Henning, Th., Jaffe, W., Juhász, A., Moór, A., Mosoni, L., Sipos, N.
Publikováno v:
A&A 604, A84 (2017)
Context. DG Tau is a low-mass pre-main sequence star, whose strongly accreting protoplanetary disk exhibits a so-far enigmatic behavior: its mid-infrared thermal emission is strongly time-variable, even turning the 10 $\mu$m silicate feature from emi
Externí odkaz:
http://arxiv.org/abs/1704.05675
Autor:
Daemgen, Sebastian, Todorov, Kamen, Silva, Jasmin, Hand, Derek, Garcia, Eugenio V., Currie, Thayne, Burrows, Adam, Stassun, Keivan G., Ratzka, Thorsten, Debes, John H., Lafreniere, David, Jayawardhana, Ray, Correia, Serge
Publikováno v:
A&A 601, A65 (2017)
We present new Keck/NIRC2 3$-$5 $\mu$m infrared photometry of the planetary-mass companion to ROXS 42B in $L^\prime$, and for the first time in Brackett-$\alpha$ (Br$\alpha$) and in $M_\mathrm{s}$-band. We combine our data with existing near-infrared
Externí odkaz:
http://arxiv.org/abs/1702.06549
Publikováno v:
Journal of Orofacial Orthopedics/Fortschritte der Kieferorthopadie; Nov2024, Vol. 85 Issue 6, p404-413, 10p
