Zobrazeno 1 - 10
of 232
pro vyhledávání: '"Leinert, Ch."'
Publikováno v:
A&A 617, A42 (2018)
Photometry of the nebulae LDN1780, LDN1642 and LBN406 is used to derive scattering properties of dust and to investigate the presence of UV fluorescence emission by molecular hydrogen and the extended red emission (ERE). We used multi-wavelength opti
Externí odkaz:
http://arxiv.org/abs/1806.06235
In a project aimed at measuring the optical Extragalactic Background Light (EBL) we are using the shadow of a dark cloud.We have performed, with the ESO VLT/FORS, spectrophotometry of the surface brightness towards the high-galactic-latitude dark clo
Externí odkaz:
http://arxiv.org/abs/1705.10790
We present the method and observations for the measurement of the Extragalactic Background Light (EBL) utilizing the shadowing effect of a dark cloud. We measure the surface brightness difference between the opaque cloud core and its unobscured surro
Externí odkaz:
http://arxiv.org/abs/1705.10681
Publikováno v:
A&A 581, A107 (2015)
The disks around Herbig Ae/Be stars are commonly divided into group I and group II based on their far-infrared spectral energy distribution, and the common interpretation for that is flared and flat disks. Recent observations suggest that many flarin
Externí odkaz:
http://arxiv.org/abs/1506.03274
Autor:
Müller, A., Pott, J. -U., Mérand, A., Abuter, R., Delplancke-Ströbele, F., Henning, Th., Köhler, R., Leinert, Ch., Morel, S., Duc, T. Phan, Pozna, E., Ramirez, A., Sahlmann, J., Schmid, C.
Publikováno v:
A&A 567, A98 (2014)
Context: A turbulent atmosphere causes atmospheric piston variations leading to rapid changes in the optical path difference of an interferometer, which causes correlated flux losses. This leads to decreased sensitivity and accuracy in the correlated
Externí odkaz:
http://arxiv.org/abs/1406.4234
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
Autor:
Mosoni, L., Sipos, N., Abraham, P., Moor, A., Kospal, A., Henning, Th., Juhasz, A., Kun, M., Leinert, Ch., Quanz, S. P., Ratzka, Th., Schegerer, A. A., van Boekel, R., Wolf, S.
Context: It is hypothesized that low-mass young stellar objects undergo eruptive phases during their early evolution. The outburst of V1647 Ori between 2003 and 2006 offered a rare opportunity to investigate such an accretion event. Aims: By means of
Externí odkaz:
http://arxiv.org/abs/1302.1348
Autor:
Rajpurohit, A. S., Reyle, C., Schultheis, M., Leinert, Ch., Allard, F., Homeier, D., Ratzka, T., Abraham, P., Moster, B., Witte, S., Ryde, N.
LHS1070 is a nearby multiple system of low mass stars. It is an important source of information for probing the low mass end of the main sequence, down to the hydrogen-burning limit. The primary of the system is a mid-M dwarf and two components are l
Externí odkaz:
http://arxiv.org/abs/1208.0452
Autor:
Kóspál, Á., Ábrahám, P., Acosta-Pulido, J. A., Dullemond, C. P., Henning, Th., Kun, M., Leinert, Ch., Moór, A., Turner, N. J.
Optical and near-infrared variability is a well-known property of young stellar objects. However, a growing number of recent studies claim that a considerable fraction of them also exhibit mid-infrared flux changes. With the aim of studying and inter
Externí odkaz:
http://arxiv.org/abs/1204.3473
We present a study of the orbits of the triple system LHS1070, with the aim to determine individual masses of its components. Sixteen new relative astrometric positions of the three components in the K band were obtained with NACO at the VLT, Omega C
Externí odkaz:
http://arxiv.org/abs/1203.6270