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Related papers: P-MaNGA: Full spectral fitting and stellar populat…

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We present the integral-field kinematics and stellar population properties of 64 galaxies (61 are Early-Type galaxies, ETGs) with Counter-Rotating stellar Disks (CRD) selected from about 4000 galaxies in the MaNGA survey, based on evidence…

Astrophysics of Galaxies · Physics 2022-02-17 Davide Bevacqua , Michele Cappellari , Silvia Pellegrini

We analyzed the global and resolved properties of approximately 1,240 nearby star-forming galaxies from the MaNGA survey, comparing compact and extended galaxies -- those with smaller and larger radii ($R_{\rm e}$), respectively -- at a…

Astrophysics of Galaxies · Physics 2024-10-23 Lin Lin , Shiyin Shen , Hassen M. Yesuf , Ye-Wei Mao , Lei Hao

We derive the oxygen abundance (O/H), the nitrogen-to-oxygen (N/O) abundance ratio, and their corresponding radial gradients for a sample of 1431 galaxies from MaNGA DR15 survey using two different realizations of the strong line method:…

Astrophysics of Galaxies · Physics 2021-11-24 I. A. Zinchenko , J. M. Vilchez , E. Perez-Montero , A. V. Sukhorukov , M. Sobolenko , S. Duarte Puertas

(Abridged) In a recent work we explored the dependence of galaxy stellar population properties derived from broad-band spectral energy distribution fitting on the fitting parameters, e.g. SFHs, age grid, metallicity, IMF, dust reddening,…

Cosmology and Nongalactic Astrophysics · Physics 2015-06-16 Janine Pforr , Claudia Maraston , Chiara Tonini

We use the MaNGA integral-field spectroscopic survey of low-redshift galaxies to compare the stellar populations of the bulge and disc components, identified from their Sersic profiles, for various samples of galaxies. Bulge dominated…

Many galaxies display clear bulges and discs, and understanding how these components form is a vital step towards understanding how the galaxy has evolved into what we see today. The BUDDI-MaNGA project aims to study galaxy evolution and…

Astrophysics of Galaxies · Physics 2022-06-29 Evelyn J. Johnston , Boris Häußler , Keerthana Jegatheesan

Fitting whole spectra at intermediate spectral resolution (R = 1000 -- 3000), to derive physical properties of stellar populations, appears as an optimized alternative to methods based on spectrophotometric indices: it uses all the…

Astrophysics · Physics 2009-11-13 M. Koleva , Ph. Prugniel , P. Ocvirk , D. Le Borgne , C. Soubiran

The stellar mass-to-light ratio gradient in SDSS $r-$band $\nabla (M_*/L_r)$ of a galaxy depends on its mass assembly history, which is imprinted in its morphology and gradients of age, metallicity, and stellar initial mass function (IMF).…

Astrophysics of Galaxies · Physics 2021-08-25 Junqiang Ge , Shude Mao , Youjun Lu , Michele Cappellari , Richard J. Long , Renbin Yan

We develop a novel semi-analytic spectral fitting approach to quantify the star-formation histories (SFHs) and chemical enrichment histories (ChEHs) of individual galaxies. We construct simple yet general chemical evolution models that…

Astrophysics of Galaxies · Physics 2022-06-08 Shuang Zhou , Michael Merrifield , Alfonso Aragon-Salamanca

We measure $\lambda_{R_e}$, a proxy for galaxy specific stellar angular momentum within one effective radius, and the ellipticity, $\epsilon$, for about 2300 galaxies of all morphological types observed with integral field spectroscopy as…

We present a new model for computing the spectral evolution of stellar populations at ages between 100,000 yr and 20 Gyr at a resolution of 3 A across the whole wavelength range from 3200 to 9500 A for a wide range of metallicities. These…

Astrophysics · Physics 2008-11-26 G. Bruzual , S. Charlot

We have developed a method for fast and accurate stellar population parameters determination in order to apply it to high resolution galaxy spectra. The method is based on an optimization technique that combines active learning with an…

Astrophysics · Physics 2010-11-11 Thamar Solorio , Olac Fuentes , Roberto Terlevich , Elena Terlevich

While emission-line flux ratio diagnostics are the most common technique for identifying active galactic nuclei (AGNs) in optical spectra, applying this approach to single fiber spectra of galaxies can omit entire subpopulations of AGNs.…

We combine an unprecedented MaNGA sample of over 3,000 passive galaxies in the stellar mass range 10^{9}-10^{12} Msun with the Sloan Digital Sky Survey group catalog by Tinker to quantify how central and satellite formation, quantified by…

We use machine learning techniques to classify galaxy merger stages, which can unveil physical processes that drive the star formation and active galactic nucleus (AGN) activities during galaxy interaction. The sample contains 4,690…

Astrophysics of Galaxies · Physics 2022-10-12 Yu-Yen Chang , Lihwai Lin , Hsi-An Pan , Chieh-An Lin , Bau-Ching Hsieh , Connor Bottrell , Pin-Wei Wang

We use the statistical power of the MaNGA integral-field spectroscopic galaxy survey to improve the definition of strong line diagnostic boundaries used to classify gas ionization properties in galaxies. We detect line emission from 3.6…

We investigate the dust attenuation in both stellar populations and ionized gas in kpc-scale regions in nearby galaxies, using integral field spectroscopy data from MaNGA MPL-9. We identify star-forming (HII) and diffuse ionized gas (DIG)…

We study the spatially resolved properties of 343 elliptical galaxies with the MaNGA/SDSS-IV survey. We used the DESI Legacy Imaging Surveys for morphological classification. Based on integrated spectroscopic properties and colors, we…

Astrophysics of Galaxies · Physics 2021-01-25 I. Lacerna , H. Ibarra-Medel , V. Avila-Reese , H. M. Hernández-Toledo , J. A. Vázquez-Mata , S. F. Sánchez

This is the first paper in our series on the combined analysis of the Dynamics and stellar Population (DynPop) for the MaNGA survey in the final SDSS Data Release 17 (DR17). Here we present a catalogue of dynamically-determined quantities…

Astrophysics of Galaxies · Physics 2023-06-06 Kai Zhu , Shengdong Lu , Michele Cappellari , Ran Li , Shude Mao , Liang Gao

The star-forming clumps in star-bursting dwarf galaxies provide valuable insights into the understanding of the evolution of dwarf galaxies. In this paper, we focus on five star-bursting dwarf galaxies featuring off-centered clumps in the…

Astrophysics of Galaxies · Physics 2023-11-28 Mengting Ju , Jun Yin , Lei Hao , Chenxu Liu , Chao-Wei Tsai , Junfeng Wang , Zhengyi Shao , Shuai Feng , Yu Rong
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