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

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In this work, we use gas phase metallicities calculated from the Sloan Digital Sky Survey (SDSS) Mapping Nearby Galaxies at Apache Point (MaNGA) Data Release 17 (DR17) to assess the extent of potential biases in spaxels which are spatially…

Astrophysics of Galaxies · Physics 2024-12-09 Jillian M. Scudder , Aidan Khelil , Jonah Z. Ordower

We analyze a clean sample of 1,118 late-type, face-on galaxies without AGN contamination from the MaNGA survey. Their photometric structures are quantified via two-component (bulge+disk) decompositions on deep $g$-band images from the DESI…

Astrophysics of Galaxies · Physics 2026-03-20 Mengting Shen , Jun Yin , Hassen M. Yesuf , Lei Hao , Jiafeng Lu , Lin Lin , Chong Ge , Junfeng Wang , Shiyin Shen , Yu Rong

Galah is an ongoing high-resolution spectroscopic survey with the goal of disentangling the formation history of the Milky Way, using the fossil remnants of disrupted star formation sites which are now dispersed around the Galaxy. It is…

We present differential stellar population models, which allow improved determinations of the ages, iron and alpha-element abundances of old stellar populations from spectral fitting. These new models are calibrated at solar abundances…

Cosmology and Nongalactic Astrophysics · Physics 2015-05-13 C. J. Walcher , P. Coelho , A. Gallazzi , S. Charlot

We perform spatially resolved stellar population analysis for a sample of 69 early-type galaxies (ETGs) from the CALIFA integral field spectroscopic survey, including 48 ellipticals and 21 S0's. We generate and quantitatively characterize…

We present the first data release of the MaNGA-ARO Survey of CO Targets (MASCOT), an ESO Public Spectroscopic Survey conducted at the Arizona Radio Observatory (ARO). We measure the CO(1-0) line emission in a sample of 187 nearby galaxies…

We firstly derive the stellar population properties: age and metallicity for $\sim$ 43,000 low redshift galaxies in the seventh data release (DR7) of the Large Sky Area Multi-Object Fiber Spectroscopic Telescope (LAMOST) survey, which have…

Astrophysics of Galaxies · Physics 2022-01-05 Li-Li Wang , Shi-Yin Shen , A-Li Luo , Guang-Jun Yang , Ning Gai , Yan-Ke Tang , Meng-Xin Wang , Li Qin , Jin-Shu Han , Li-Xia Rong

We investigate radiation hardness within a representative sample of 67 nearby (0.02 $\lesssim $z$ \lesssim$0.06) star-forming (SF) galaxies using the integral field spectroscopic data from the MaNGA survey. The softness parameter $\eta$ =…

Astrophysics of Galaxies · Physics 2021-09-15 Nimisha Kumari , Ricardo Amorin , Enrique Perez-Montero , Jose Vilchez , Roberto Maiolino

The merging history of galaxies can be traced with studies of dynamically close pairs. These consist of a massive primary galaxy and a less massive secondary (or satellite) galaxy. The study of the stellar populations of secondary (lower…

Three basic ingredients are required to generate a simple stellar population (SSP) library, i.e., an initial mass function (IMF), a stellar evolution model/isochrones, and an empirical/theoretical stellar spectral library. However, there…

Astrophysics of Galaxies · Physics 2019-02-20 Junqiang Ge , Shude Mao , Youjun Lu , Michele Cappellari , Renbin Yan

We present the PPAK Integral Field Spectroscopy (IFS) Nearby Galaxies Survey: PINGS, a 2-dimensional spectroscopic mosaicking of 17 nearby disk galaxies in the optical wavelength range. This project represents the first attempt to obtain…

Cosmology and Nongalactic Astrophysics · Physics 2015-05-18 F. F. Rosales-Ortega , R. C. Kennicutt , S. F. Sanchez , A. I. Diaz , A. Pasquali , B. D. Johnson , C. N. Hao

A spectral evolution model of galaxies that includes both stellar and dust effects is newly built. xApplying the model to 22 nearby starburst galaxies, we have shown that far infrared luminosity of galaxies helps to break the age-dustiness…

Astrophysics · Physics 2009-10-31 Toshinobu Takagi , Nobuo Arimoto , Vladas Vansevicius

The many unique properties of galaxies are shaped by physical processes that affect different components of the galaxy - like the bulges and discs - in different ways, and leave characteristic imprints on the light and spectra of these…

Astrophysics of Galaxies · Physics 2024-02-06 Keerthana Jegatheesan , Evelyn J. Johnston , Boris Häußler , Kalina V. Nedkova

The MaNGA project has obtained IFU data for several thousand nearby galaxies, including barred galaxies. With the two dimensional spectral and kinematic information provided by IFUs, we can measure the pattern speed of a barred galaxy,…

Astrophysics of Galaxies · Physics 2018-10-17 Rui Guo , Shude Mao , E. Athanassoula , Hongyu Li , Junqiang Ge , R. J. Long , Michael Merrifield , Karen Masters

Gas-phase metallicity gradients in galaxies provide important clues to those galaxies' formation histories. Using SDSS-IV MaNGA data, we previously demonstrated that gas metallicity gradients vary systematically and significantly across the…

We present a comparative test of four widely used full spectral fitting codes, with the aim of answering the question: how robust is the retrieval of the stellar initial mass function (IMF) and other stellar properties of galaxies? We used…

Astrophysics of Galaxies · Physics 2025-08-25 Ilaria Lonoce , Anja Feldmeier-Krause , Alexandra Masegian , Wendy L. Freedman

The connection between quenching mechanisms, which rapidly turn star-forming systems into quiescent, and the properties of the galaxy population remains difficult to discern. In this work we investigate the physical properties of MaNGA and…

We investigate the relationship of kinematically misaligned galaxies with their large-scale environment, in the context of halo assembly bias. According to numerical simulations, halo age at fixed halo mass is intrinsically linked to the…

The search for new global scaling relations linking physical properties of galaxies has a fundamental interest. Furthermore, their recovery from spatially resolved relations has been one of the spotlights of integral field spectroscopy…

We analyse the integral-field spectroscopy data for the $\approx10,000$ galaxies in final data release of the MaNGA survey. We identify 188 galaxies for which the emission lines cannot be described by single Gaussian components. These…

Astrophysics of Galaxies · Physics 2023-09-21 Youquan Fu , Michele Cappellari , Shude Mao , Shengdong Lu , Kai Zhu , Ran Li
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