Results 21 to 30 of about 178,259 (350)

The Complex Structure of the Bulge of M31

The Astrophysical Journal Supplement Series, 2023
The bulge of M31 is of interest regarding the nature of galactic bulges and how their structure relates to bulge formation mechanisms and their subsequent evolution.
Denis Leahy, Traian Craiciu, Joseph Postma   +2 more
doaj   +1 more source

Chemical Composition of Faint (I~21 mag) Microlensed Bulge Dwarf OGLE-2007-BLG-514S [PDF]

, 2009
We present a high-resolution spectrum of a microlensed G dwarf in the Galactic bulge with spectroscopic temperature T_eff = 5600 +/- 180 K. This I~21 mag star was magnified by a factor ranging from 1160 to 1300 at the time of observation.
Alonso, Alvarez, Andrew Gould, Andrzej Udalski, Arlandini, Baade, Bedin, Bedin, Bennett, Bensby, Bensby, Bensby, Busso, Castelli, Chen, Cochrane, Cohen, Cohen, Courtney R. Epstein, Cunha, Demarque, Denissenkov, Feltzing, Fulbright, George Becker, Gould, Gratton, Hansen, Howard, Ivans, Janes, Jennifer A. Johnson, Johnson, Johnson, Johnson, Johnson, Kalirai, Kilic, Lefèbvre, Lennon, Luck, McWilliam, McWilliam, Minniti, Palmeri, Ramírez, Rich, Rich, Smith, Stanek, Subo Dong, Travaglio, van Loon, Venn, Yi, Yoo   +55 more
core   +2 more sources

On the star orbits in the Milky-Way bulge [PDF]

Serbian Astronomical Journal, 2000
The Milky-Way bulge is studied through calculating the galactocentric orbits of imaginary bulge stars for initial conditions simulating the bulge. The author assumes a velocity distribution characterized by bulge rotation and isotropy of the residual ...
Ninković S.
doaj   +1 more source

Reconciling the Galactic Bulge Turnoff Age Discrepancy with Enhanced Helium Enrichment [PDF]

, 2012
We show that the factor $\sim$2 discrepancy between spectroscopic and photometric age determinations of the Galactic bulge main-sequence turnoff can be naturally explained by positing an elevated helium enrichment for the bulge relative to that assumed ...
Bekki, Brown, Brown, Carigi, Catelan, Chung, Clarkson, Dotter, Fulbright, Horiuchi, Johnson, Kuijken, Martinez-Valpuesta, Marín-Franch, Marín-Franch, Milone, Minniti, Nataf, Nataf, Nataf, Piotto, Piotto, Renzini, Rich, Shen, Simha, van Saders   +26 more
core   +1 more source

Cerebral Blood Flow Disorder in Acute Subdural Hematoma and Acute Intraoperative Brain Bulge

Frontiers in Neurology, 2022
ContextAcute subdural hematoma (ASDH) has a high incidence and high mortality. During surgery for ASDH, brain tissue sometimes rapidly swells and protrudes into the bone window during or after removal of the hematoma.
Liang Xian, Cheng Wang, Liangfeng Wei, Shousen Wang, Shousen Wang   +4 more
doaj   +1 more source

The Relation between Black Hole Mass, Bulge Mass, and Near-Infrared Luminosity [PDF]

, 2003
We present new accurate near-infrared (NIR) spheroid (bulge) structural parameters obtained by two-dimensional image analysis for all galaxies with a direct black hole (BH) mass determination.
Alessandro Marconi, Kormendy J., Leslie K. Hunt, Soltan A.   +3 more
core   +2 more sources

Chemical similarities between Galactic bulge and local thick disk red giant stars [PDF]

, 2008
The evolution of the Milky Way bulge and its relationship with the other Galactic populations is still poorly understood. The bulge has been suggested to be either a merger-driven classical bulge or the product of a dynamical instability of the inner ...
A. Alves-Brito, Alonso, Asplund, B. Barbuy, Ballero, Bensby, Bensby, C. Chiappini, Castelli, Cescutti, Chiappini, Collet, Cunha, D. Yong, da Silva, Demarque, Fulbright, Fulbright, Gratton, I. Ramírez, J. Meléndez, K. C. Freeman, K. Cunha, Kennicutt, Lecureur, M. Asplund, M. S. Bessell, McWilliam, Meléndez, Meléndez, Meléndez, Ramírez, Ramírez, Reddy, Rich, Salaris, Stanek, Tinsley, V. V. Smith, van der Kruit, van Leeuwen, Yong, Zoccali   +42 more
core   +2 more sources

River bulge evolution and dynamics in a non-tidal sea – Daugava River plume in the Gulf of Riga, Baltic Sea [PDF]

Ocean Science, 2016
Satellite remote sensing imagery and numerical modelling were used for the study of river bulge evolution and dynamics in a non-tidal sea, the Gulf of Riga (GoR) in the Baltic Sea.
E. Soosaar, I. Maljutenko, R. Uiboupin, M. Skudra, U. Raudsepp   +4 more
doaj   +1 more source

The split Hopkinson bar bulge setup: a novel dynamic biaxial test method [PDF]

EPJ Web of Conferences, 2021
In sheet metal forming, very often, large plastic deformations are imposed to a thin plate. An accurate description of the material’s elastoplastic response is therefore of paramount importance to perform finite element (FE) simulations of an actual ...
Corallo Luca, Verleysen Patricia
doaj   +1 more source

Theoretical Re-evaluations of Scaling Relations between SMBHs and Their Host Galaxies—1. Effect of Seed BH Mass

Frontiers in Astronomy and Space Sciences, 2017
We use a semi-analytic model of galaxy formation and investigate how the mass of a seed black hole affect the scaling relation between black hole mass and bulge mass at z ~ 0.
Hikari Shirakata, Toshihiro Kawaguchi, Takashi Okamoto, Ryu Makiya, Ryu Makiya, Tomoaki Ishiyama, Yoshiki Matsuoka, Masahiro Nagashima, Motohiro Enoki, Taira Oogi, Masakazu A. R. Kobayashi   +10 more
doaj   +1 more source