Zobrazeno 1 - 10
of 42
pro vyhledávání: '"Ruchti, Gregory"'
Autor:
Steinmetz, Matthias, Guiglion, Guillaume, McMillan, Paul J., Matijevic, Gal, Enke, Harry, Kordopatis, Georges, Zwitter, Tomaz, Valentini, Marica, Chiappini, Cristina, Casagrande, Luca, Wojno, Jennifer, Anguiano, Borja, Bienayme, Olivier, Bijaoui, Albert, Binney, James, Burton, Donna, Cass, Paul, de Laverny, Patrick, Fiegert, Kristin, Freeman, Kenneth, Fulbright, Jon P., Gibson, Brad K., Gilmore, Gerard, Grebel, Eva K., Helmi, Amina, Kunder, Andrea, Munari, Ulisse, Navarro, Julio F., Parker, Quentin, Ruchti, Gregory R., Recio-Blanco, Alejandra, Reid, Warren, Seabroke, George M., Siviero, Alessandro, Siebert, Arnaud, Stupar, Milorad, Watson, Fred, Williams, Mary E. K., Wyse, Rosemary F. G., Anders, Friedrich, Antoja, Teresa, Bland-Hawthorn, Joss, Bossini, Diego, Garcia, Rafael A., Carrillo, Ismael, Chaplin, William J., Elsworth, Yvonne, Famaey, Benoit, Gerhard, Ortwin, Jofre, Paula, Just, Andreas, Mathur, Savita, Miglio, Andrea, Minchev, Ivan, Monari, Giacomo, Mosser, Benoit, Ritter, Andreas, Rodrigues, Thaise S., Scholz, Ralf-Dieter, Sharma, Sanjib, Sysoliatina, Kseniia
We present part 2 of the 6th and final Data Release (DR6 or FDR) of the Radial Velocity Experiment (RAVE), a magnitude-limited (9
Externí odkaz:
http://arxiv.org/abs/2002.04512
Autor:
Steinmetz, Matthias, Matijevic, Gal, Enke, Harry, Zwitter, Tomaz, Guiglion, Guillaume, McMillan, Paul J., Kordopatis, Georges, Valentini, Marica, Chiappini, Cristina, Casagrande, Luca, Wojno, Jennifer, Anguiano, Borja, Bienayme, Olivier, Bijaoui, Albert, Binney, James, Burton, Donna, Cass, Paul, de Laverny, Patrick, Fiegert, Kristin, Freeman, Kenneth, Fulbright, Jon P., Gibson, Brad K., Gilmore, Gerard, Grebel, Eva K., Helmi, Amina, Kunder, Andrea, Munari, Ulisse, Navarro, Julio F., Parker, Quentin, Ruchti, Gregory R., Recio-Blanco, Alejandra, Reid, Warren, Seabroke, George M., Siviero, Alessandro, Siebert, Arnaud, Stupar, Milorad, Watson, Fred, Williams, Mary E. K., Wyse, Rosemary F. G., Anders, Friedrich, Antoja, Teresa, Birko, Danijela, Bland-Hawthorn, Joss, Bossini, Diego, Garcia, Rafael A., Carrillo, Ismael, Chaplin, William J., Elsworth, Yvonne, Famaey, Benoit, Gerhard, Ortwin, Jofre, Paula, Just, Andreas, Mathur, Savita, Miglio, Andrea, Minchev, Ivan, Monari, Giacomo, Mosser, Benoit, Ritter, Andreas, Rodrigues, Thaise S., Scholz, Ralf-Dieter, Sharma, Sanjib, Sysoliatina, Kseniia
The Radial Velocity Experiment (RAVE) is a magnitude-limited (9
Externí odkaz:
http://arxiv.org/abs/2002.04377
Autor:
Bergemann, Maria, Collet, Remo, Schoenrich, Ralph, Andrae, Rene, Kovalev, Mikhail, Ruchti, Gregory, Hansen, Camilla J., Magic, Zazralt
From exploratory studies and theoretical expectations it is known that simplifying approximations in spectroscopic analysis (LTE, 1D) lead to systematic biases of stellar parameters and abundances. These biases depend strongly on surface gravity, tem
Externí odkaz:
http://arxiv.org/abs/1612.07363
Autor:
Bergemann, Maria, Collet, Remo, Amarsi, Anish M., Kovalev, Mikhail, Ruchti, Gregory, Magic, Zazralt
We determine Mg abundances in 6 Gaia benchmark stars using theoretical one-dimensional (1D) hydrostatic model atmospheres, as well as temporally- and spatially-averaged 3D model atmospheres (<3D>). The stars cover a range of Teff from 4700 to 6500 K,
Externí odkaz:
http://arxiv.org/abs/1612.07355
The Milky Way is expected to host an accreted disc of stars and dark matter. This forms as massive >1:10 mergers are preferentially dragged towards the disc plane by dynamical friction and then tidally shredded. The accreted disc likely contributes o
Externí odkaz:
http://arxiv.org/abs/1407.4464
Bayesian analysis of ages, masses, and distances to cool stars with non-LTE spectroscopic parameters
For studies of Galactic evolution, the accurate characterization of stars in terms of their evolutionary stage and population membership is of fundamental importance. A standard approach relies on extracting this information from stellar evolution mo
Externí odkaz:
http://arxiv.org/abs/1212.4497
We present a comprehensive analysis of different techniques available for the spectroscopic analysis of FGK stars, and provide a recommended methodology which efficiently estimates accurate stellar atmospheric parameters for large samples of stars. O
Externí odkaz:
http://arxiv.org/abs/1210.7998
Autor:
Ruchti, Gregory R., Fulbright, Jon P., Wyse, Rosemary F. G., Gilmore, Gerard F., Grebel, Eva K., Bienayme, Olivier, Bland-Hawthorn, Joss, Freeman, Ken C., Gibson, Brad K., Munari, Ulisse, Navarro, Julio F., Parker, Quentin A., Reid, Warren, Seabroke, George M., Siebert, Arnaud, Siviero, Alessandro, Steinmetz, Matthias, Watson, Fred G., Williams, Mary, Zwitter, Tomaz
Publikováno v:
2011, ApJ, 743, 107
We report the discovery of eight lithium-rich field giants found in a high resolution spectroscopic sample of over 700 metal-poor stars ([Fe/H]<-0.5) selected from the RAVE survey. The majority of the Li-rich giants in our sample are very metal-poor
Externí odkaz:
http://arxiv.org/abs/1111.1623
Autor:
Ruchti, Gregory R., Fulbright, Jon P., Wyse, Rosemary F. G., Gilmore, Gerard F., Bienayme, Olivier, Bland-Hawthorn, Joss, Gibson, Brad K., Grebel, Eva K., Helmi, Amina, Munari, Ulisse, Navarro, Julio F., Parker, Quentin A., Reid, Warren, Seabroke, George M., Siebert, Arnaud, Siviero, Alessandro, Steinmetz, Matthias, Watson, Fred G., Williams, Mary, Zwitter, Tomaz
We have undertaken the study of the elemental abundances and kinematic properties of a metal-poor sample of candidate thick-disk stars selected from the RAVE spectroscopic survey of bright stars to differentiate among the present scenarios of the for
Externí odkaz:
http://arxiv.org/abs/1105.3691
Autor:
Fulbright, Jon P., Wyse, Rosemary F. G., Ruchti, Gregory R., Gilmore, G. F., Grebel, Eva, Bienayme, O., Binney, J., Bland-Hawthorn, J., Campbell, R., Freeman, K. C., Gibson, B. K., Helmi, A., Munari, U., Navarro, J. F., Parker, Q. A., Reid, W., Seabroke, G. M., Siebert, A., Siviero, A., Steinmetz, M., Watson, F. G., Williams, M., Zwitter, T.
Very metal-poor stars are of obvious importance for many problems in chemical evolution, star formation, and galaxy evolution. Finding complete samples of such stars which are also bright enough to allow high-precision individual analyses is of consi
Externí odkaz:
http://arxiv.org/abs/1010.4491