Results 71 to 80 of about 92,502 (190)

4MOST Consortium Survey 3: Milky Way Disc and Bulge Low-Resolution Survey (4MIDABLE-LR)

, 2019
The mechanisms of the formation and evolution of the Milky Way are encoded in the orbits, chemistry and ages of its stars. With the 4MOST MIlky way Disk And BuLgE Low-Resolution Survey (4MIDABLE-LR) we aim to study kinematic and chemical substructures in
Anders, F., Andrae, R., Arentsen, A., Asplund, M., Bensby, T., Bergemann, M., Casagrande, L., Cescutti, G., Chiappini, C., Church, R., Feltzing, S., Fouesneau, M., Fusillo, N., Gerhard, O., Grebel, E., Guiglion, G., Khalatyan, A., Kordopatis, G., Kovalev, M., Lemasle, B., Matijevic, G., McMillan, P., Minchev, I., Monari, G., Queiroz, A., Rix, H., Rybizki, J., Ryde, N., Schwope, A., Starkenburg, E., Steinmetz, M., Storm, J., Team, 4., Traven, G., Tremblay, P., Valentini, M., Walton, N., Xiang, M., Zucker, D.   +38 more
core   +1 more source

On the Formation of Planets in the Milky Way’s Thick Disk

The Astrophysical Journal
Abstract Exoplanet demographic surveys have revealed that close-in (≲1 au) small planets orbiting stars in the Milky Way’s thick disk are ∼50% less abundant than those orbiting stars in the Galactic thin disk. One key difference between the two stellar populations is the time at which they emerged: thick-disk stars are the likely product
Tim Hallatt, Eve J. Lee
openaire   +3 more sources

Chemical Abundances and Milky Way Formation [PDF]

, 2006
to be published in the proceedings of the ESO/Arcetri-workshop on "Chemical Abundances and Mixing in Stars", 13.-17. Sep. 2004, Castiglione della Pescaia, Italy, L. Pasquini, S. Randich (eds.)
Gilmore, Gerry, Wyse, Rosemary F. G.
openaire   +2 more sources

Estimating gas accretion in disc galaxies using the Kennicutt-Schmidt law [PDF]

, 2012
We show how the existence of a relation between the star formation rate and the gas density, i.e. the Kennicutt-Schmidt law, implies a continuous accretion of fresh gas from the environment into the discs of spiral galaxies. We present a method to derive
Aumer, Bauermeister, Bell, Bigiel, Binney, Binney, Binney, Binney, Bland-Hawthorn, Boissier, Boissier, Brinchmann, Cappellari, Case, Chabrier, Chiappini, Chiappini, Cignoni, Collins, Dehnen, Dekel, Diehl, Filippo Fraternali, Fraternali, Fraternali, Fraternali, Gogarten, Harris, Haywood, Hopkins, Hopkins, Hopkins, Jorgenson, Kalberla, Kaufmann, Kaufmann, Kennicutt, Kennicutt, Kennicutt, Kennicutt, Kennicutt, Kroupa, Krumholz, Krumholz, Lah, Lehner, Leroy, Lyne, Maeder, Maller, Marinacci, Marinacci, Matteo Tomassetti, Matteucci, Minchev, Murray, Naab, Nakanishi, Nipoti, Pagel, Panter, Peek, Peek, Piontek, Prantzos, Rocha-Pinto, Roychowdhury, Roškar, Sancisi, Scalo, Schaye, Schmidt, Searle, Sellwood, Thom, Tinsley, Tinsley, Tosi, Tosi, Twarog, van de Voort, Vincoletto, Walter, Weisz, Wyder, Zwaan   +85 more
core   +2 more sources

Mapping the Chemodynamics of the Galactic Disk Using the LAMOST and APOGEE Red Clump Stars

The Astrophysical Journal Supplement Series
A detailed measurement is made of the metallicity distributions, kinematics, and dynamics of the thin and thick disks across a large disk volume (5.0 ≤ R ≤ 15.0 kpc and ∣ Z ∣ ≤ 3.0 kpc) by using the LAMOST–APOGEE red clump stars.
Weixiang Sun, Han Shen, Biwei Jiang, Xiaowei Liu   +3 more
doaj   +1 more source

Bar Formation in Milky Way type Galaxies

Open Astronomy, 2016
Many barred galaxies, possibly including the Milky Way, have cusps in their centers. There is a widespread belief, however, that the usual bar instability, which occurs in bulgeless galaxy models, is impossible for cuspy models because of the presence of
Polyachenko E. V., Berczik P., Just A.
doaj   +1 more source

High-resolution Chemical Abundances of the Nyx Stream

The Astrophysical Journal, 2023
Nyx is a nearby, prograde, and high-eccentricity stellar stream physically contained in the thick disk, but its origin is unknown. Nyx could be the remnant of a disrupted dwarf galaxy, in which case the associated dark matter substructure could affect ...
Shuyu Wang, Lina Necib, Alexander P. Ji, Xiaowei Ou, Mariangela Lisanti, Mithi A. C. de los Reyes, Allison L. Strom, Mimi Truong   +7 more
doaj   +1 more source

Star formation in the large Magellanic cloud [PDF]

What role the Large Magellanic Cloud (LMC), a dwarf irregular galaxy, plays in understanding infrared luminous galaxies is discussed. There are two main reasons the LMC may prove helpful.
Harvey, Paul M., Hyland, A. R., Jones, Terry Jay   +2 more
core   +1 more source

Dissipationless Formation and Evolution of the Milky Way Nuclear Star Cluster

, 2012
Abridged: In one widely discussed model for the formation of nuclear star clusters (NSCs), massive globular clusters spiral into the center of a galaxy and merge to form the nucleus. It is now known that at least some NSCs coexist with supermassive black
Agarwal, Alessandra Mastrobuono-Battisti, Antonini, Bartko, Bekki, Böker, Carollo, Charbonnel, Côté, David Merritt, Do, Ebisuzaki, Emsellem, Fabio Antonini, Ferrarese, Figer, Figer, Gebhardt, Genzel, Ghez, Gillessen, Gualandris, Hashimoto, Haşegan, Ibata, Jordán, Lauer, Loose, Lotz, Makino, Matthews, Merritt, Merritt, Merritt, Meynet, Milosavljević, Miocchi, Murali, Ostriker, Pesce, Pfuhl, Poon, Portegies Zwart, Roberto Capuzzo-Dolcetta, Rosenberg, Saha, Schaerer, Schaerer, Schaller, Schinnerer, Schinnerer, Schödel, Schödel, Seth, Seth, Sjouwerman, Spitzer, Takahashi, Wehner, Zhao   +59 more
core   +1 more source

Estimating the Initial Mass of the Gaia–Enceladus Dwarf Galaxy with a Chemical Evolution Model

The Astrophysical Journal
This work investigates the initial mass and chemical evolution history of the Gaia–Enceladus dwarf galaxy. We combine spectroscopic data from APOGEE with astrometric data from Gaia Data Release 3 to identify Gaia–Enceladus candidate stars via a machine ...
Olcay Plevne, Furkan Akbaba
doaj   +1 more source