Results 41 to 50 of about 208,454 (264)

Maximum entropy estimation of the Galactic bulge morphology via the VVV Red Clump [PDF]

Monthly notices of the Royal Astronomical Society, 2019
The abundance and narrow magnitude dispersion of Red Clump (RC) stars make them a popular candidate for mapping the morphology of the bulge region of the Milky Way.
Brenna Coleman, D. Paterson, C. Gordon, O. Macias, H. Ploeg   +4 more
semanticscholar   +1 more source

Reddening and metallicity maps of the Milky Way bulge from VVV and 2MASS III. The first global photometric metallicity map of the Galactic bulge

, 2013
We investigate the large scale metallicity distribution in the Galactic bulge, using a large spatial coverage, in order to constrain the bulge formation scenario.
Gonzalez, O. A., Minniti, D., Rejkuba, M., Tobar, R., Valenti, E., Zoccali, M.   +5 more
core   +1 more source

The Galactic Bulge Diffuse Emission in Broadband X-Rays with NuSTAR [PDF]

Astrophysical Journal, 2019
The diffuse hard X-ray emission that fills the Galactic center, bulge, and ridge is believed to arise from unresolved populations of X-ray binary systems.
K. Perez, R. Krivonos, D. Wik
semanticscholar   +1 more source

Natures of a clump-origin bulge: a pseudobulge-like but old metal-rich bulge

, 2011
Bulges in spiral galaxies have been supposed to be classified into two types: classical bulges or pseudobulges. Classical bulges are thought to form by galactic merger with bursty star formation, whereas pseudobulges are suggested to form by secular ...
Abadi, Agertz, Allende Prieto, Alves-Brito, Athanassoula, Aumer, Babusiaux, Baron, Bate, Bekki, Bensby, Bensby, Bensby, Bensby, Bensby, Bica, Binny, Bouché, Bournaud, Bournaud, Bournaud, Brook, Brook, Bullock, Burkert, Burstein, Cappellari, Ceverino, Ceverino, Combes, Combes, de Vaucouleurs, Debattista, Drory, Dutton, Dwek, Elmegreen, Elmegreen, Elmegreen, Elmegreen, Elmegreen, Elmegreen, Erwin, Fall, Ferreras, Fisher, Fisher, Fisher, Fisher, Fisher, Frogel, Fulbright, Genel, Genzel, Gonzalez, Gonzalez, Hill, Hopkins, Howard, Hubber, Immeli, Immeli, Inoue, Ivezić, Jablonka, Johnson, Katz, Kaufmann, Kaufmann, Kent, Kent, Kormendy, Kormendy, Kormendy, Kormendy, Kormendy, Kormendy, Krumholz, Lecureur, Makino, McWilliam, McWilliam, Meléndez, Monaghan, Naab, Nagashima, Nakasato, Nataf, Navarro, Navarro, Navarro, Noguchi, Noguchi, Noguchi, Ohta, Okamoto, Okamoto, Peletier, Pfenniger, Quinn, Rahimi, Rich, Ruchti, Ryde, Saha, Sahu, Saito, Saitoh, Saitoh, Saitoh, Saitoh, Salpeter, Sawala, Schmidt, Sellwood, Shigeki Inoue, Springel, Takayuki R. Saitoh, Terndrup, Terndrup, Thoul, Thoul, Toomre, van den Bergh, van den Bergh, Wada, Williams, Wyse, Zoccali, Zoccali   +129 more
core   +1 more source

Very Metal-poor Stars in the Outer Galactic Bulge Found by the Apogee Survey [PDF]

, 2013
Despite its importance for understanding the nature of early stellar generations and for constraining Galactic bulge formation models, at present little is known about the metal-poor stellar content of the central Milky Way.
Beers, Timothy C., Bizyaev, Dmitry, Cunha, Katia, Ebelke, Garrett, Eisenstein, Daniel J., Frinchaboy, Peter M., Girardi, Léo, Hearty, Fred R., Holtzman, Jon, Johnson, Jennifer A., Majewski, Steven R., Malanushenko, Elena, Malanushenko, Viktor, Meszaros, Szabolcs, Nidever, David, O'Connel, Robert W., Oravetz, Daniel, Pan, Kaike, Prieto, Carlos Allende, Pérez, Ana E. García, Robin, Annie C., Schiavon, Ricardo P., Schneider, Donald P., Schultheis, Mathias, Shetrone, Matthew, Simmonsand, Audrey, Skrutskie, Michael F., Smith, Verne V., Wilson, John C., Zasowski, Gail   +29 more
core   +3 more sources

Parameters of Six Selected Galactic Potential Models

Open Astronomy, 2017
This paper is devoted to the refinement of the parameters of the six three-component (bulge, disk, halo) axisymmetric Galactic gravitational potential models on the basis of modern data on circular velocities of Galactic objects located at distances up ...
Bajkova Anisa, Bobylev Vadim
doaj   +1 more source

R Coronae Borealis stars in the Galactic Bulge discovered by EROS-2

, 2008
Rare types of variable star may give unique insight into short-lived stages of stellar evolution. The systematic monitoring of millions of stars and advanced light curve analysis techniques of microlensing surveys make them ideal for discovering also ...
A. Gould, A. Maury, A. Milsztajn, A. Vidal-Madjar, Alard, Alcock, Alksnis, Alksnis, Ansari, Arce, Asplund, Azzopardi, B. Goldman, Belczynski, Bessell, C. Afonso, C. Coutures, C. Hamadache, C. Loup, C. Magneville, Clayton, Clayton, Clayton, Clayton, Clayton, Cottrell, de Laverny, Derue, Dutra, Dwek, Eisenhauer, Feast, Gonzalez, Hamadache, Hesselbach, Iben, Iben, J. Andersen, J. B. Marquette, J. de Kat, J. F. Glicenstein, J. Haissinski, J. N. Albert, J. P. Beaulieu, J. Rich, Jurcsik, Keenan, Kilkenny, Kraemer, L. Le Guillou, Landolt, Lawson, Leão, Lloyd Evans, Lloyd Evans, M. Gros, M. Moniez, M. Spiro, Milone, Munari, N. Palanque-Delabrouille, O. Perdereau, P. Bareyre, P. Fouqué, P. R. Wood, P. Tisserand, Paczynski, Pojmanski, Pollard, R. Ansari, R. Ferlet, Richer, Rieke, Rodgers, S. Zylberajch, Schlegel, Sevenster, Sevenster, Skrutskie, Stephenson, Sumi, Tammann, Terzan, Terzan, Tisserand, Trimble, Udalski, Webbink, X. Charlot, Y. Rahal, Zaniewski, Zaritsky, É. Aubourg, É. Lesquoy, É. Maurice   +94 more
core   +3 more sources

Metallicity gradients through disk Instability: A simple model for the Milky Way's boxy bulge

, 2013
Observations show a clear vertical metallicity gradient in the Galactic bulge, which is often taken as a signature of dissipative processes in the formation of a classical bulge. Various evidence shows, however, that the Milky Way is a barred galaxy with
Gerhard, Ortwin, Martinez-Valpuesta, Inma   +1 more
core   +1 more source

Chemical evolution of the Galactic bulge as traced by microlensed dwarf and subgiant stars. VI. Age and abundance structure of the stellar populations in the central sub-kpc of the Milky Way [PDF]

, 2017
We present a detailed elemental abundance study of 90 F and G dwarf, turn-off and subgiant stars in the Galactic bulge. Based on high-resolution spectra acquired during gravitational microlensing events, stellar ages and abundances for 11 elements (Na ...
T. Bensby, S. Feltzing, Alan Gould, Alan Gould, A. Gould, J. Yee, Julie A. Johnson, M. Asplund, J. Meléndez, S. Lucatello, L. Howes, A. McWilliam, A. Udalski, M. Szymański, I. Soszyński, R. Poleski, R. Poleski, Ł. Wyrzykowski, K. Ulaczyk, K. Ulaczyk, S. Kozłowski, P. Pietrukowicz, J. Skowron, P. Mróz, M. Pawlak, F. Abe, Y. Asakura, A. Bhattacharya, I. Bond, D. Bennett, Y. Hirao, M. Nagakane, N. Koshimoto, T. Sumi, D. Suzuki, P. Tristram   +35 more
semanticscholar   +1 more source

The 3D Structure of the Galactic Bulge [PDF]

Publications Astronomical Society of Australia, 2016
We review the observational evidences concerning the three-dimensional structure of the Galactic bulge. Although the inner few kpc of our Galaxy are normally referred to as the bulge, all the observations demonstrate that this region is dominated by a ...
M. Zoccali, E. Valenti
semanticscholar   +1 more source