Results 91 to 100 of about 4,353 (224)

Galactic bulges [PDF]

Monthly Notices of the Royal Astronomical Society, 2000
Mercedes Mollá, Federico Ferrini, Giacomo Gozzi   +2 more
openaire   +3 more sources

Microlensing search for extra solar planets

, 2015
Gravitational microlensing may be used to probe distant stars for planetary companions. The presence of a planet in the vicinity of a star acting as the lens may cause a short lived anomaly in the observed lightcurve of the lensing event.
Tsapras, Yiannis
core  

Galactic Bulge microlensing optical depth from EROS-2

, 2006
Aims.We present a new EROS-2 measurement of the microlensing optical depth toward the Galactic Bulge. Methods: .Light curves of 5.6× 106 clump-giant stars distributed over 66 deg2 of the Bulge were monitored during seven Bulge seasons.
J. Haissinski, R. Ansari, Charlot, X., O. Perdereau, Vigroux, L., Albert, J. N., Le Guillou, L., J. Rich, Albert, J.N., Hamadache..[et al.], C., A. Gould, M. Spiro, Gould, A., Ferlet, R., C. Loup, Afonso, C., Coutures, C., Aubourg, É, Tisserand, Patrick, B. Goldman, Marquette, J.B., P. Bareyre, Tisserand, P., Glicenstein, J. F., Y. R. Rahal, X. Charlot, D. Graff, A. Milsztajn, R. Ferlet, Milsztajn, A., Magneville, C., Perdereau, O., Beaulieu, J.-P., L. Le Guillou, Loup, C., Maury, A., C. Hamadache, Fouqué, P., Goldman, B., Bareyre, P., Rahal, Y. R., É. Lesquoy, Glicenstein, J.F., Ansari, R., Maurice, É, Maurice, E., P. Tisserand, C. Magneville, Lesquoy, É, Zylberajch, S., J. F. Glicenstein, A. Vidal-Madjar, S. Zylberajch, M. Gros, Marquette, J. B., J. de Kat, Palanque-Delabrouille, N., C. Afonso, J. N. Albert, J. B. Marquette, Rich, J., Haissinski, J., Aubourg, E., É. Aubourg, Vidal-Madjar, A., Beaulieu, J. P., Lesquoy, E., A. Maury, Spiro, M., Gros, M., Graff, D., J. P. Beaulieu, J. Andersen, Andersen, J., Moniez, M., de Kat, J., L. Vigroux, Beaulieu, J.P., C. Coutures, M. Moniez, N. Palanque-Delabrouille, É. Maurice, Hamadache, C., P. Fouqué, Rahal, Y.R.   +84 more
core   +1 more source

3-Dimensional dynamics of the galactic bulge

, 2010
This thesis is part of a project which attempts to unveil the structure of the galactic bulge of our galaxy through the study of the kinematics of stars in low foreground extinction windows.Thus, in order to effectively constraint the phase-space ...
Soto Vicencio, M.H.
core  

Galactic Bulge Valinhos Observatory Catalog (Teixeira+, 2011)

, 2011
table2.dat 11619x128 Galactic Bulge Valinhos Observatory Catalog, GBVOCVizieR On-line Data Catalog: J/A+A/534/A91. Originally published in: 2011A&A...534A..91TThe Galactic Bulge Valinhos Observatory Catalog (GBVOC) contains 11619 stars brighter than V~16
Le Campion, J.-F., Ducourant, C., Teixeira, R., Galli, P. A. B., Benevides-Soares, P., Sinachopoulos, D., Krone-Martins, A., Fidencio, M.   +7 more
core   +1 more source

Chemical Evolution of Bulges of Active Galactic Nuclei in the Early Universe: Roles of Accreting Stars

The Astrophysical Journal
JWST/NIRCam observations reveal dense stellar cores in high-redshift galactic bulges, indicative of sustained star formation and potential stellar accretion.
Shuo Zhai, Jian-Min Wang, Yan-Rong Li, Wei-jian Guo, Gang Zhao   +4 more
doaj   +1 more source

Classification of OGLE Variables in Galactic Bulge [PDF]

Journal of Astronomy and Space Sciences, 1997
The miscellaneous variables observed by OGLE Project of searching for dark matter in our Galaxy have been analyzed to find their characteristics. We investigated evolutionary status, shape of light curve, relationship between orbital period and amplitude
Young Woon Kang
doaj  

Galactic bulges: overview [PDF]

Proceedings of the International Astronomical Union, 2007
AbstractThis overview of galactic bulges begins with a discussion of the various kinds of bulges (classical, boxy/peanut-shaped, pseudo) and their likely formation mechanisms. Other specific topics include the Galactic bar/bulge and its chemical evolution, the bulge of M31, the relation between bulges and metal-poor halos (often lumped together as ...
openaire   +1 more source

The Transition between the Inner Disc and the Innermost Galactic Regions

, 2015
We discuss the iron and the α-element gradients in the Galactic disc and in the innermost Galactic regions (bulge, bar, nuclear bulge). Accurate spectroscopic measurements of young stellar tracers show a well defined iron gradient between the inner and ...
M., K., Fabrizio, Primas, Thévenin, G., C., Pedicelli, R., P., N., Bergemann, F., B., Buonanno, Inno, Laura, Romaniello, François, Bono, Laney, Nonino, Matsunaga, Genovali, S., Lemasle   +24 more
core  

Classical Cepheids behind the Galactic bulge

, 2015
Severe interstellar extinction toward the Galactic plane has prevented the investigation of stellar populations in that region. Pulsating variable stars, particularly Cepheids and Miras, are useful tracers because their distances and ages can be ...
N. Matsunaga
core   +1 more source