Rotation, Accretion, and Magnetic Activity in Pre-Main Sequence Stars
Final Report Abstract
The original purpose of this project could not be carried out - the extensive photometric monitoring observations, both in broad- and narrow-band filters, could not be made as intended with the MONET telescopes due to a long series of unfortunate and totally unexpected technical problems. However, we were able to carry out several similar studies using less complicated astronomical resources. Her photometric and spectroscopic analysis of the system CHS9979 has provided a new and exciting target containing a significant circumstellar disc around a potential close binary, only one of two such systems known or suspected. Now that automatic photometric monitoring with the MONET telescopes has finally become routinely possible, we will be able to follow up on this DFG supported project in a way not possible during the period of support.
Publications
- 2011, "Disk-Rotation Connection: Very Low Mass Stars and Brown Dwarfs", Proc. 16th Cambridge Workshop on Cool Stars, Stellar Systems, and the Sun, eds. C.M. Johns-Krull, M.K. Browning, A.A. West, ASPC 448, 721
Rodriguez-Ledesma, M. V., Mundt, R., Eislöffel, J.
- 2012, "Planetary companions around the metal-poor star HIP 11952", A&A 540, 141
Setiawan, J., Roccatagliata, V., Fedele, D., Henning, Th., Pasquali, A., Rodriguez-Ledesma, M. V., Caffau, E., Seemann, U., Klement, R. J.
- 2012, '*An unusual very low-mass high-amplitude pre-main sequence periodic variable", A&A 544, 112
Rodriguez-Ledesma, M.V., Mundt, R., Ibrahimov, M., Messina, S., Parihar, P., Hessman, F.V., Alves de Oliveira, C., Herbst, W.
(See online at https://doi.org/10.1051/0004-6361/201118649) - 2013, "Disks, accretion and outflows of brown dwarfs", AN 334, 159
Joergens, V., Herczeg, G., Liu, Y., Pascucci, I., Whelan, E., Alcala, J., Biazzo, K., Costigan, G., Gully-Santiago, M., Henning, Th., Natta, A., Rigliaco, E., Rodriguez-Ledesma, M. V., Sicilia-Aguilar, A., Tottle, J., Wolf, S.
(See online at https://doi.org/10.1002/asna.201211745) - 2013, "Reanalysis of the FEROS observations of HIP 11952", A&A 556, 3
Müller, A., Roccatagliata, V., Henning, Th., Fedele, D., Pasquali, A., Caffau, E., Rodriguez-Ledesma, M. V., Mohler-Fischer, M., Seemann, U., Klement, R. J.
- 2013, "The spectral type of CHS 7797 - an intriguing very low mass periodic variable in the Orion Nebula Cluster", A&A 551,44
Rodriguez-Ledesma, M. V., Mundt, R., Pintado, O., Boudreault, S., Hessman, F., Herbst, W.
(See online at https://doi.org/10.1051/0004-6361/201219748) - 2014, "Variability of CHXR 20: accretion, extinction, spots or a companion?", lAUS 299, 216
Kopytova, T.G., Joergens, V., Sicilia-Aguilar, A., Rodriguez-Ledesma, M.V., Mundt, R.
(See online at https://doi.org/10.1017/S1743921313008387)
