Results 41 to 50 of about 28,044 (289)

Analysis of Peculiarities of the Stellar Velocity Field in the Solar Neighborhood

, 2009
Based on a new version of the Hipparcos catalogue and an updated Geneva-Copenhagen survey of F and G dwarfs, we analyze the space velocity field of about 17000 single stars in the solar neighborhood. The main known clumps, streams, and branches (Pleiades,
A. A. Mylläri, A. C. Quillen, A. Helmi, A. Ibukiyama, A. T. Bajkova, A.H.W. Küpper, B. Famaey, B. Hauck, B. J. Taylor, B. N. öm, B. W. Silverman, C. K. Chui, C. Soubiran, D. Chakrabarty, D. R. Soderblom, E. Chereul, E. Hog, F. Leeuwen van, G. A. Gontcharov, G. M. Silva De, J. F. Navarro, J. Holmberg, J. R. King, J. S. Jenkins, J. Skuljan, J. Torra, M. I. Arifyanto, M. Steinmetz, M. V. Zabolotskikh, O. J. Eggen, R. Asiain, R. Fux, R. Klement, R. P. Olling, R. S. Simone De, S. K. Yi, T. Antoja, T. Bensby, T. Bensby, T.E. Lutz, T.V. Borkova, V. Castellani, V. V. Bobylev, V. V. Bobylev, V. V. Bobylev, V. V. Bobylev, V. V. Bobylev, V. V. Vityazev, W. Dehnen, W. Dehnen, W. Dehnen, W. Dehnen, W. Schuster, W. Schuster, Ya. O. Chumak, Ya. O. Chumak, Ya. O. Chumak   +56 more
core   +1 more source

What causes the fragmentation of debris streams in TDEs? [PDF]

, 2020
A tidal disruption event (TDE) occurs when a star passes too close to a supermassive black hole and gets torn apart by its gravitational tidal field. After the disruption, the stellar debris form an expanding gaseous stream.
Lodato, Giuseppe, Motta, Valentina, Sacchi, Andrea, Toci, Claudia   +3 more
core   +2 more sources

Constraining the distribution of dark matter in dwarf spheroidal galaxies with stellar tidal streams

, 2015
We use high-resolution N-body simulations to follow the formation and evolution of tidal streams associated to dwarf spheroidal galaxies (dSphs). The dSph models are embedded in dark matter (DM) haloes with either a centrally-divergent 'cusp', or an ...
Errani, Raphaël, Peñarrubia, Jorge, Tormen, Giuseppe   +2 more
core   +1 more source

The nature of the KFR08 stellar stream [PDF]

Astronomy & Astrophysics, 2015
9 pages, 6 figures, accepted for publication in A& ...
C. Liu, S. Feltzing, G. Ruchti
openaire   +3 more sources

Chaotic Dispersal of Tidal Debris

, 2015
Several long, dynamically cold stellar streams have been observed around the Milky Way Galaxy, presumably formed from the tidal disruption of globular clusters.
Hogg, David W., Johnston, Kathryn V., Kupper, Andreas H. W., Pearson, Sarah, Price-Whelan, Adrian M., Valluri, Monica   +5 more
core   +1 more source

The Dominance of Metal-Rich Streams in Stellar Halos: A Comparison Between Substructure in M31 and Lambda-CDM Models [PDF]

, 2009
Extensive photometric and spectroscopic surveys of the Andromeda galaxy (M31) have discovered tidal debris features throughout M31's stellar halo. We present stellar kinematics and metallicities in fields with identified substructure from our on-going ...
Font, Andreea S., Gilbert, Karoline M., Guhathakurta, Puragra, Johnston, Kathryn V.   +3 more
core   +2 more sources

Basroparib inhibits YAP‐driven cancers by stabilizing angiomotin

Molecular Oncology, EarlyView.
Basroparib, a selective tankyrase inhibitor, suppresses Wnt signaling and attenuates YAP‐driven oncogenic programs by stabilizing angiomotin. It promotes AMOT–YAP complex formation, enforces cytoplasmic YAP sequestration, inhibits YAP/TEAD transcription, and sensitizes YAP‐active cancers, including KRAS‐mutant colorectal cancer, to MEK inhibition.
Young‐Ju Kwon, Dong Young Kim, Yuna Kim, Uk‐Il Kim, Jae‐Sung Kim   +4 more
wiley   +1 more source

Re-visiting the relations: Galactic thin disc age-velocity dispersion relation [PDF]

, 2007
The velocity dispersion of stars in the solar neighbourhood thin disc increases with time after star formation. Nordstrom et al. (2004) is the most recent observational attempt to constrain the age-velocity dispersion relation.
Alonso, Baranne, Barbanis, Bensby, Brown, Carlberg, Carlberg, Carr, Chiba, Crawford, De Simone, Dehnen, Dehnen, Dehnen, Dehnen, Edvardsson, ESA, Famaey, Famaey, Freeman, Fuchs, Fux, G. Gilmore, G. M. Seabroke, Gilmore, Girardi, Gomez, Haywood, Holmberg, Huang, Hänninen, Høg, Jenkins, Jenkins, Jørgensen, Kalnajs, Kroupa, Lacey, Lacey, Luri, Mayor, Ng, Nordström, Olsen, Olsen, Olsen, Olsen, Olsen, Olsen, Perryman, Quillen, Quillen, Quillen, Quinn, Reid, Salasnich, Schuster, Seabroke, Sellwood, Sellwood, Skuljan, Sommer-Larsen, Soubiran, Spitzer, Spitzer, Steinmetz, Stromgren, Toth, Valenti, Velazquez, Villumsen, Walker, Wielen, Woolley   +73 more
core   +2 more sources

Stellar streams in the Gaia era

New Astronomy Reviews
Review article for New Astronomy Reviews (as part of a Special Issue: "Gaia, the first crop of discoveries"). Comments are welcome!
Ana Bonaca, Adrian M. Price-Whelan
openaire   +2 more sources

Imaging of NGC 5907's stellar stream [PDF]

Proceedings of the International Astronomical Union, 2015
AbstractWe have obtained deep g, r, and i-band Subaru and ultra-deep 3.6 μm IRAC images of parts of the multiply-wrapped stellar stream around the nearby edge-on galaxy NGC 5907. We have fitted the surface brightness measurements of the stream with FSPS stellar population synthesis models to derive the metallicity and age of the brightest parts of the ...
Laine, Seppo, Grillmair, Carl J., Martínez-Delgado, David, Romanowsky, Aaron J., Capak, Peter L., Arendt, Richard G., Ashby, Matthew L. N., Davies, James E., Majewski, Steven R., GaBany, R. Jay   +9 more
openaire   +2 more sources