TY  - JOUR
A1  - Rinaldi, G.
A1  - Formisano, M.
A1  - Kappel, David
A1  - Capaccioni, F.
A1  - Bockelee-Morvan, D.
A1  - Cheng, Y-C
A1  - Vincent, J-B
A1  - Deshapriya, P.
A1  - Arnold, G.
A1  - Capria, M. T.
A1  - Ciarniello, M.
A1  - De Sanctis, M. C.
A1  - Doose, L.
A1  - Erard, S.
A1  - Federico, C.
A1  - Filacchione, G.
A1  - Fink, U.
A1  - Leyrat, C.
A1  - Longobardo, A.
A1  - Magni, G.
A1  - Mighorini, A.
A1  - Mottola, S.
A1  - Naletto, G.
A1  - Raponi, A.
A1  - Taylor, F.
A1  - Tosi, F.
A1  - Tozzi, G. P.
A1  - Salatti, M.
T1  - Analysis of night-side dust activity on comet 67P observed by VIRTIS-M
BT  - a new method to constrain the thermal inertia on the surface
JF  - Astronomy and astrophysics : an international weekly journal
N2  - On 2015 July 18, near perihelion at a heliocentric distance of 1.28 au, the Visible InfraRed Thermal Imaging Spectrometer (VIRTIS-M) on board the Rosetta spacecraft had the opportunity of observing dust activity in the inner coma with a view of the night side (shadowed side) of comet 67P/Churyumov-Gerasimenko. At the time of the measurements we present here, we observe a dust plume that originates on the far side of the nucleus. We are able to identify the approximate location of its source at the boundary between the Hapi and Anuket regions, and we find that it has been in darkness for some hours before the observation. Assuming that this time span is equal to the conductive time scale, we obtain a thermal inertia in the range 25-36 W K-1 m(-2) s(-1/2). These thermal inertia values can be used to verify with a 3D finite-element method (REM) numerical code whether the surface and subsurface temperatures agree with the values found in the literature. We explored three different configurations: (1) a layer of water ice mixed with dust beneath a dust mantle of 5 mm with thermal inertia of 36 J m(-2) K-1 S-0.5 ; (2) the same structure, but with thermal inertia of 100 J m(-2) K-1 S-0.5; (3) an ice-dust mixture that is directly exposed. Of these three configurations, the first seems to be the most reasonable, both for the low thermal inertia and for the agreement with the surface and subsurface temperatures that have been found for the comet 67P/Churyumov-Gerasimenko. The spectral properties of the plume show that the visible dust color ranged from 16 +/- 4.8%/100 nm to 13 +/- 2.6%/100 nm, indicating that this plume has no detectable color gradient. The morphology of the plume can be classified as a narrow jet that has an estimated total ejected mass of between 6 and 19 tons when we assume size distribution indices between -2.5 and -3.
KW  - comets: general
KW  - comets: individual: 67P/Churyumov-Gerasimenko
KW  - infrared: planetary systems
Y1  - 2019
U6  - https://doi.org/10.1051/0004-6361/201834907
SN  - 1432-0746
VL  - 630
PB  - EDP Sciences
CY  - Les Ulis
ER  - 
TY  - JOUR
A1  - Frodl, Thomas
A1  - Janowitz, Deborah
A1  - Schmaal, Lianne
A1  - Tozzi, Leonardo
A1  - Dobrowolny, Henrik
A1  - Stein, Dan J.
A1  - Veltman, Dick J.
A1  - Wittfeld, Katharina
A1  - van Erp, Theo G. M.
A1  - Jahanshad, Neda
A1  - Block, Andrea
A1  - Hegenscheid, Katrin
A1  - Voelzke, Henry
A1  - Lagopoulos, Jim
A1  - Hatton, Sean N.
A1  - Hickie, Ian B.
A1  - Frey, Eva Maria
A1  - Carballedo, Angela
A1  - Brooks, Samantha J.
A1  - Vuletic, Daniella
A1  - Uhlmann, Anne
A1  - Veer, Ilya M.
A1  - Walter, Henrik
A1  - Schnell, Knut
A1  - Grotegerd, Dominik
A1  - Arolt, Volker
A1  - Kugel, Harald
A1  - Schramm, Elisabeth
A1  - Konrad, Carsten
A1  - Zurowski, Bartosz
A1  - Baune, Bernhard T.
A1  - van der Wee, Nic J. A.
A1  - van Tol, Marie-Jose
A1  - Penninx, Brenda W. J. H.
A1  - Thompson, Paul M.
A1  - Hibar, Derrek P.
A1  - Dannlowski, Udo
A1  - Grabe, Hans J.
T1  - Childhood adversity impacts on brain subcortical structures relevant to depression
JF  - Journal of psychiatric research
N2  - Childhood adversity plays an important role for development of major depressive disorder (MDD). There are differences in subcortical brain structures between patients with MDD and healthy controls, but the specific impact of childhood adversity on such structures in MDD remains unclear. Thus, aim of the present study was to investigate whether childhood adversity is associated with subcortical volumes and how it interacts with a diagnosis of MDD and sex. Within the ENIGMA-MDD network, nine university partner sites, which assessed childhood adversity and magnetic resonance imaging in patients with MDD and controls, took part in the current joint mega-analysis. In this largest effort world-wide to identify subcortical brain structure differences related to childhood adversity, 3036 participants were analyzed for subcortical brain volumes using FreeSurfer. A significant interaction was evident between childhood adversity, MDD diagnosis, sex, and region. Increased exposure to childhood adversity was associated with smaller caudate volumes in females independent of MDD. All subcategories of childhood adversity were negatively associated with caudate volumes in females - in particular emotional neglect and physical neglect (independently from age, ICV, imaging site and MDD diagnosis). There was no interaction effect between childhood adversity and MDD diagnosis on subcortical brain volumes. Childhood adversity is one of the contributors to brain structural abnormalities. It is associated with subcortical brain abnormalities that are relevant to psychiatric disorders such as depression. (C) 2016 Published by Elsevier Ltd.
KW  - Depression
KW  - Childhood adversity
KW  - MRI
KW  - Caudate
KW  - Hippocampus
KW  - ENIGMA
Y1  - 2016
U6  - https://doi.org/10.1016/j.jpsychires.2016.11.010
SN  - 0022-3956
SN  - 1879-1379
VL  - 86
SP  - 58
EP  - 65
PB  - Elsevier
CY  - Oxford
ER  -