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Related papers: Stellar populations in the Galactic bulge

200 papers

Clusters of galaxies allow a direct estimate of the metallicity and metal production yield on the largest scale so far. It is argued that cluster metallicity ($\sim 1/3$ solar) should be taken as representative of the low-$z$ universe as a…

Astrophysics · Physics 2007-05-23 Alvio Renzini

There is now strong evidence that the metal-rich globular clusters (GC) near the center of our Galaxy are associated with the Galactic bulge rather than the disk as previously thought. Here we extend the concept of bulge GCs to the GC…

Astrophysics · Physics 2009-11-06 Duncan A. Forbes , Jean P. Brodie , Soeren S. Larsen

We investigate radial and vertical metallicity gradients for a sample of red clump stars from the RAdial Velocity Experiment (RAVE) Data Release 3. We select a total of 6781 stars, using a selection of colour, surface gravity and…

Astrophysics of Galaxies · Physics 2015-06-03 S. Bilir , S. Karaali , S. Ak , O. Onal , N. D. Dagtekin , T. Yontan , G. Gilmore , G. M. Seabroke

We present the kinematic results from our ARGOS spectroscopic survey of the Galactic bulge of the Milky Way. Our aim is to understand the formation of the Galactic bulge. We examine the kinematics of about 17,400 stars in the bulge located…

We present an analysis of the stellar populations in a sample of ~7000 galaxies from the 6dF Galaxy Survey (6dFGS). We derive ages and metallicities using stellar population models. We also derive dynamical masses and dynamical…

Astrophysics · Physics 2009-11-13 Robert N. Proctor , Philip Lah , Duncan A. Forbes , Matthew Colless , Warrick Couch

We investigate the radial metallicity gradients and azimuthal metallicity distributions on the Galactocentric $X$--$Y$ plane using mono-temperature stellar populations selected from LAMOST MRS young stellar sample. The estimated radial…

Astrophysics of Galaxies · Physics 2023-06-14 Chun Wang , Haibo Yuan , Maosheng Xiang , Yuan-Sen Ting , Yang Huang , Xiaowei Liu

We present a new database of our two-dimensional bulge-disk decompositions for 14,233 galaxies drawn from SDSS DR12 in order to examine the properties of bulges residing in the local universe ($0.005 < z < 0.05$). We performed…

Astrophysics of Galaxies · Physics 2016-07-20 Keunho Kim , Sree Oh , Hyunjin Jeong , Alfonso Aragon-Salamanca , Rory Smith , Sukyoung K. Yi

In this study, we investigate the distribution and origin of chemical elements in different stellar components of simulated Milky Way-like galaxies in relation to their mass assembly history, stellar age, and metallicity. Using a sample of…

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. Using an estimate of the RC's intrinsic luminosity function, we extracted…

Astrophysics of Galaxies · Physics 2023-08-10 Brenna Coleman , Dylan Paterson , Chris Gordon , Oscar Macias , Harrison Ploeg

The Galactic Bulge can uniquely be studied from large samples of individual stars, and is therefore of prime importance for understanding the stellar population structure of bulges in general. Here the observational evidence on the…

Astrophysics of Galaxies · Physics 2018-10-17 B. Barbuy , C. Chiappini , O. Gerhard

The metal content of galaxies provides a window into their formation in the full context of the cosmic baryon cycle. In this study, we examine the relationship between stellar mass and stellar metallicity (${\rm MZ}_*{\rm R}$) in the…

We present stellar mass measurements for a sample of 36 Luminous Compact Blue Galaxies (LCBGs) at redshifts z = 0.4-1.2 in the Flanking Fields around the Hubble Deep Field North. The technique is based on fitting a two-component galaxy…

Astrophysics · Physics 2009-11-07 R. Guzman , G. Ostlin , D. Kunth , M. Bershady , D. Koo , M. Pahre

We have used the AAOMEGA spectrograph to obtain R $\sim 1500$ spectra of 714 stars that are members of two red clumps in the Plaut Window Galactic bulge field $(l,b)=0^{\circ},-8^{\circ}$. We discern no difference between the clump…

The 6dF Galaxy Survey provides a very large sample of galaxies with reliable measurements of Lick line indices and velocity dispersions. This sample can be used to explore the correlations between mass and stellar population parameters such…

Astrophysics · Physics 2008-01-08 Matthew Colless , Heath Jones , Rob Proctor , Craig Harrison , Lachlan Campbel , Philip Lah

The Bulge Radial Velocity/Abundance Assay (BRAVA) has accomplished a survey of 10,000 red giants in the Southern Galactic bulge, approximately spanning -8 deg. < l < +8 deg. and -3 deg. <b < -8 deg., a region within roughly 1 kpc from the…

Astrophysics of Galaxies · Physics 2011-08-31 R. Michael Rich

The characteristics of the stellar populations in the Galactic Bulge inform and constrain the Milky Way's formation and evolution. The metal-poor population is particularly important in light of cosmological simulations, which predict that…

Studying the resolved stellar populations of the different structural components which build massive galaxies directly unveils their assembly history. We aim at characterizing the stellar population properties of a representative sample of…

Scaling relations between galactic parameters represent key pieces of evidence for investigating the processes of galaxy formation and evolution. In most studies, these relations have been obtained for large portions of the galaxies (i.e.,…

Astrophysics of Galaxies · Physics 2025-09-16 Patrícia da Silva , R. B. Menezes , T. V. Ricci , F. Combes , F. Pinna , B. Barbuy

We calculate stellar masses for massive luminous galaxies at redshift 0.2-0.7 using the first two years of data from the Baryon Oscillation Spectroscopic Survey (BOSS). Stellar masses are obtained by fitting model spectral energy…

Based on high-resolution spectra obtained during gravitational microlensing events we present a detailed elemental abundance analysis of 32 dwarf and subgiant stars in the Galactic bulge. [ABRIDGED], we now have 58 microlensed bulge dwarfs…