Results 121 to 130 of about 4,353 (224)
Composition of the Galactic bulge
, 2003 We present detailed abundance results for 9 Galactic bulge stars in Baade's Window, based on HIRES (R=45,000--60,000) spectra taken with the Keck I telescope. The alpha elements show non-uniform enhancements relative to the Solar neighborhood trends: Mg and Si are enhanced in all our bulge stars by $\sim$0.5--0.3 dex, showing a slight decrease with ...
McWilliam, Andrew, Rich, R. Michael
openaire +2 more sources
The Chemical Evolution of the Galactic Bulge [PDF]
, 2009 This science white paper addresses the issue of discovering the chemical evolution of the Galactic bulge, from which we may learn the initial mass function at the time of the formation of the bulge, the timescale for the initial burst of star formation,
Cunha, Katia +9 more
core
CAPOS: The bulge Cluster APOgee Survey
Astronomy & AstrophysicsContext. This study presents detailed elemental abundances in the intermediate-metallicity bulge globular cluster Djorg 2 based on high-resolution near-infrared spectra of six (R ~ 22 500) members obtained through the bulge Cluster APOgee Survey (CAPOS).
Pino-Zúñiga Thaiz +7 more
doaj +1 more source
The Formation of Galactic Bulges [PDF]
, 2000 Part I. Introduction: What are galactic bulges? Part II. The Epoch of Bulge Formation: Origin of bulges Deep sub-mm surveys: High-z ULIRGs and the formation of spheroids Ages and metallicities for stars in the galactic bulge Integrated stellar populations of bulges: First results HST-NICMOS observations of galactic bulges: Ages and dust Inside-out ...
openaire +1 more source
PNe abundances: Galactic bulge versus the disc [PDF]
, 2001 We compare the abundances of He, N, O, Ar, S, and Ne, determined in a similar way, for a sample of Galactic bulge and disc planetary nebulae (PNe).
Walton, NA +3 more
core
A Breakdown of the Black Hole–Bulge Mass Relation in Local Active Galaxies
The Astrophysical JournalWe investigate the relation between black hole (BH) mass and bulge stellar mass for a sample of 117 local ( z ∼ 0) galaxies hosting low-luminosity, broad-line active galactic nuclei (AGNs).
Megan R. Sturm, Amy E. Reines
doaj +1 more source
Tracing Back a Second-generation Star Stripped from Terzan 5 by the Galactic Bar
The Astrophysical Journal LettersThe Galactic bulge hosts the Milky Way’s oldest stars, possibly coming from disrupted globular clusters (GCs) or the bulge’s primordial building blocks, making these stars witnesses to the Galaxy’s early chemical enrichment.
Stefano O. Souza +8 more
doaj +1 more source
Near-Infrared Study of the Galactic Bulge X-ray Emission
, 2019 Apparently diffuse X-ray emission has been known to exist along the Galactic Plane, which is referred to as the Galactic Diffuse X-ray Emission (GDXE). The GDXE is composed of the Galactic Center X-ray Emission (GCXE), Galactic Ridge X-ray emission (GRXE)
Morihana, Kumiko (6471410) +3 more
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Cloud-based e-Infrastructure for scheduling astronomical observations
, 2015 This research was pursued under the EPSRC grant ‘Working Together: Constraint Programming and Cloud Computing’ (EP/K015745/1) and an Amazon Web Services (AWS) Education Research Grant.Gravitational microlensing exploits a transient phenomenon where an ...
Barker, Adam David +11 more
core +1 more source