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The distribution of metals within a galaxy traces the baryon cycle and the buildup of galactic disks, but the detailed gas phase metallicity distribution remains poorly sampled. We have determined the gas phase oxygen abundances for 7,138…

We combine data from the Sloan Digital Sky Survey (SDSS) and the Arecibo Legacy Fast ALFA Survey (ALFALFA) to study the cold atomic gas content of galaxies in groups and clusters in local universe. A careful cross-matching of galaxies in…

Astrophysics of Galaxies · Physics 2015-10-14 Ilsang Yoon , Jessica L. Rosenberg

We use spatially and temporally resolved maps of stellar population properties of 300 galaxies from the CALIFA integral field survey to investigate how the stellar metallicity (Z*) relates to the total stellar mass (M*) and the local mass…

We investigate barlenses in the Calar Alto Legacy Integral Field Area (CALIFA) survey galaxies, studying their morphologies, stellar populations and metallicities. Multi-component decompositions are made using the Sloan Digital Sky Survey…

Astrophysics of Galaxies · Physics 2018-10-17 E. Laurikainen , H. Salo , J. Laine , J. Janz

The HI mass function (HIMF) for galaxies in the local universe is constructed from the results of the Arecibo HI Strip Survey, a blind extragalactic survey in the 21cm line. The survey consists of two strips covering in total 65 square…

Astrophysics · Physics 2009-10-30 Martin Zwaan , Frank Briggs , David Sprayberry , Ertu Sorar

The analysis of the chemical composition of galaxies provides fundamental insights into their evolution. This holds true also in the case of the outer regions of spiral galaxies. This Chapter presents the observational data, accumulated in…

Astrophysics of Galaxies · Physics 2017-08-02 Fabio Bresolin

The MASSIV (Mass Assembly Survey with SINFONI in VVDS) project aims at finding constraints on the different processes involved in galaxy evolution. This study proposes to improve the understanding of the galaxy mass assembly through…

We present an extensive compendium of photometrically-determined structural properties for all CALIFA galaxies in the Third Data Release (DR3). We exploit Sloan Digital Sky Survey (SDSS) images in order to extract one-dimensional (1D) $gri$…

Astrophysics of Galaxies · Physics 2018-03-28 Colleen Gilhuly , Stéphane Courteau

Helium is the second most common chemical species in the Universe. The study of helium abundance has the potential to unravel the chemical evolution of and within galaxies. In this study, we provide an empirical calibration for the singly…

Astrophysics of Galaxies · Physics 2021-07-07 M. Valerdi , J. K. Barrera-Ballesteros , S. F. Sánchez , C. Espinosa-Ponce , L. Carigi , A. Mejía-Narváez

Analysing the quantified HI profile asymmetries of galaxies in different environments, we explore not only the prevalence of asymmetry in HI profiles, but also the possibility of using HI profile asymmetries to trace merger activity. We…

Astrophysics of Galaxies · Physics 2019-07-24 J Bok , S-L Blyth , D G Gilbank , E C Elson

Fossil record methods based on spectral synthesis techniques have matured over the past decade, and their application to integrated galaxy spectra fostered substantial advances on the understanding of galaxies and their evolution. Yet,…

We present gas-phase metallicity and ionization parameter maps of 25 star-forming face-on spiral galaxies from the SAMI Galaxy Survey Data Release 1. Self-consistent metallicity and ionization parameter maps are calculated simultaneously…

The metallicity structure of stellar halos encodes the fossil record of galaxy assembly, tracing the chemical evolution and dynamical imprint of past mergers. Using five Milky Way-mass halos from the Aquarius simulations, we introduce an…

Astrophysics of Galaxies · Physics 2025-12-01 Amit Mondal , Biswajit Pandey

Using a representative sample of 14 star-forming dwarf galaxies in the local Universe, we show the existence of a spaxel-to-spaxel anti-correlation between the index N2 (log([NII]6583/Halpha)) and the Halpha flux. These two quantities are…

Astrophysics of Galaxies · Physics 2018-05-16 J. Sanchez Almeida , N. Caon , C. Munoz-Tunon , M. Filho , M. Cervino

HI in galaxies traces the fuel for future star formation and reveals the effects of feedback on neutral gas. Using a statistically uniform, HI-selected sample of 565 galaxies from the ALFALFA H-alpha survey, we explore HI properties as a…

Astrophysics of Galaxies · Physics 2015-08-06 A. E. Jaskot , M. S. Oey , J. J. Salzer , A. Van Sistine , E. F. Bell , M. P. Haynes

Through a homogeneous analysis of spectroscopic literature data of red giant stars, we determine the radial metallicity profiles of 30 dwarf galaxies in the Local Group. We explore correlations between the calculated metallicity gradients…

Astrophysics of Galaxies · Physics 2022-09-14 S. Taibi , G. Battaglia , R. Leaman , A. Brooks , C. Riggs , F. Munshi , Y. Revaz , P. Jablonka

We present a comparative study of molecular and ionized gas kinematics in nearby galaxies. These results are based on observations from the EDGE survey, which measured spatially resolved $^{12}$CO(J=1-0) in 126 nearby galaxies. Every galaxy…

We present the integrated stellar mass-metallicity relation (MZR) for more than 1700 galaxies included in the integral field area SDSS-IV MaNGA survey. The spatially resolved data allow us to determine the metallicity at the same physical…

Astrophysics of Galaxies · Physics 2017-08-02 J. K. Barrera-Ballesteros , S. F. Sánchez , T. Heckman , G. A. Blanc
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