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Related papers: On the Metallicity Gradients in the Galactic Disk …

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We investigate radial metallicity gradients for a sample of dwarf stars from the RAdial Velocity Experiment (RAVE) Data Release 3 (DR3). We select a total of approximately 17000 F-type and G-type dwarfs using selection of colour, log g, and…

Astrophysics of Galaxies · Physics 2015-05-30 B. Coskunoglu , S. Ak , S. Bilir , S. Karaali , O. Onal , E. Yaz , G. Gilmore , G. M. Seabroke

We present precision radial velocities and stellar population parameters for 77 star clusters in the Local Group galaxy M33. Our GTC and WHT observations sample both young, massive clusters and known/candidate globular clusters, spanning…

Astrophysics of Galaxies · Physics 2015-04-24 Michael A. Beasley , Izaskun San Roman , Carme Gallart , Ata Sarajedini , Antonio Aparicio

We estimated the galactic model parameters for a set of 20 intermediate-latitude fields with galactic longitudes 0<l<100 and 160<l<240, included in the currently available Data Release 6 (DR6) of SDSS, to explore their possible variation…

Astrophysics of Galaxies · Physics 2015-05-13 E. Yaz , S. Karaali

We present line-strength gradients for 22 spectral indices measured in a sample of 82 early-type galaxies in different environments,including the high-density core of the Coma cluster, the Virgo cluster,poor groups,and field galaxies. We…

Astrophysics · Physics 2009-11-11 P. Sanchez-Blazquez , J. Gorgas , N. Cardiel

In this work we present an analysis of the behaviour of galaxies in a four-dimensional parameter space defined by stellar mass, metallicity, star formation rate, and molecular gas mass. We analyse a combined sample of 227 galaxies, which…

Astrophysics of Galaxies · Physics 2016-10-26 M. S. Bothwell , R. Maiolino , C. Cicone , Y. Peng , J. Wagg

Spiral star-forming galaxies are complex astrophysical objects whose baryonic component is dominated by the disk, where most of the star formation resides. The metallicity in the disk is not uniform, and it usually decreases with the…

Astrophysics of Galaxies · Physics 2019-05-13 Letizia Stanghellini , Danielle Berg , Fabio Bresolin , Katia Cunha , Laura Magrini

The metallicity of galaxies, and its variation with galactocentric radius, provides key insights into the formation histories of galaxies and the physical processes driving their evolution. In this work, we analyze the radial metallicity…

We study the metallicity properties of galaxies in the zCOSMOS sample between 0.2<z<0.8. At z<0.46, where Ha and [NII] are detected, we find the same dependence of metallicity on stellar mass and Star Formation Rate (SFR), the Fundamental…

Cosmology and Nongalactic Astrophysics · Physics 2015-05-30 Giovanni Cresci , Filippo Mannucci , Veronica Sommariva , Roberto Maiolino , Alessandro Marconi , Marcella Brusa

(Abridged) Context: The assumption of a gas-to-dust mass ratio (\gamma) is a common approach to estimate the basic properties of molecular clouds, such as total mass and column density of molecular hydrogen, from (sub)mm continuum…

Astrophysics of Galaxies · Physics 2017-11-01 A. Giannetti , S. Leurini , C. Koenig , J. S. Urquhart , T. Pillai , J. Brand , J. Kauffmann , F. Wyrowski , K. M. Menten

Radial migration is defined as the change in guiding centre radius of stars and gas caused by gains or losses of angular momentum that result from gravitational interaction with non-axisymmetric structure. This has been shown to have…

Astrophysics of Galaxies · Physics 2015-01-08 Robert J. J. Grand , Daisuke Kawata , Mark Cropper

We present a comprehensive study of the relations between gas kinematics, metallicity, and stellar mass in a sample of 82 GRB-selected galaxies using absorption and emission methods. We find the velocity widths of both emission and…

We present a sample of 86,111 star-forming galaxies (SFGs) selected from the catalogue of the MPA-JHU emission-line measurements for SDSS DR7 to investigate the evolution of mass-metallicity (MZ) relation. We find that: under the $\rm…

Astrophysics of Galaxies · Physics 2019-05-08 Yu-Zhong Wu , Wei Zhang , Yong-Heng Zhao

We use the largest open clusters catalogue in the post-Gaia era to provide the observational view of the Galactic disk. By compiling the physical parameters like age, distance, and kinematic information, we investigate the spatial…

Astrophysics of Galaxies · Physics 2023-09-08 Yogesh C. Joshi , Sagar Malhotra

We present the first systematic investigation into the metallicity gradients in galaxy close pairs. We determine the metallicity gradients for 8 galaxies in close pairs using HII region metallicities obtained with high signal-to-noise…

Cosmology and Nongalactic Astrophysics · Physics 2015-05-19 Lisa J. Kewley , David Rupke , H. Jabran Zahid , Margaret J. Geller , Elizabeth J. Barton

Baryonic cycling is reflected in the spatial distribution of metallicity within galaxies, yet gas-phase metallicity distribution and its connection with other properties of dwarf galaxies are largely unexplored. We present the first…

The existence of a spatially resolved Star-Forming Main Sequence (rSFMS) and a spatially resolved Mass-Metallicity Relation (rMZR) is now well established for local galaxies. Moreover, gradients with metallicity decreasing with radius seem…

It has long been known that the vertical motions of Galactic disk stars increase with stellar age, commonly interpreted as vertical heating through orbit scattering. Here we map the vertical actions of disk stars as a function of age…

Astrophysics of Galaxies · Physics 2019-06-19 Yuan-Sen Ting , Hans-Walter Rix

During the last three decades, many papers have reported the existence of a luminosity-metallicity or mass-metallicity (M-Z) relation for all kinds of galaxies: The more massive galaxies are also the ones with more metal-rich interstellar…

Cosmology and Nongalactic Astrophysics · Physics 2019-08-15 N. Vale Asari , G. Stasinska , R. Cid Fernandes , J. M. Gomes , M. Schlickmann , A. Mateus , W. Schoenell

We explore the effects of environment in the evolution of late-type galaxies by studying the radial profiles of light- and mass-weighted metallicities of galaxies in two discrete environments: field and groups. We use a sample of 167…

Astrophysics of Galaxies · Physics 2020-10-14 V. Coenda , D. Mast , H. Muriel , H. J. Martínez
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