A5086445565- Galaxies: Formation, Evolution, Phenomena
- Astronomy and Astrophysical Research
- Stellar, planetary, and galactic studies
- Gamma-ray bursts and supernovae
- Astronomical Observations and Instrumentation
- Remote Sensing in Agriculture
- Astrophysical Phenomena and Observations
- Scientific Research and Discoveries
- Impact of Light on Environment and Health
- Astrophysics and Star Formation Studies
- Plant Water Relations and Carbon Dynamics
- Calibration and Measurement Techniques
- Astrophysics and Cosmic Phenomena
- Spectroscopy and Laser Applications
- History and Developments in Astronomy
- Adaptive optics and wavefront sensing
- Advanced Measurement and Metrology Techniques
- Computational Physics and Python Applications
- Statistical and numerical algorithms
- Cosmology and Gravitation Theories
- Laser Design and Applications
- Protein Structure and Dynamics
- Robotic Mechanisms and Dynamics
- Astro and Planetary Science
- Advanced Fluorescence Microscopy Techniques
Universidad Nacional Autónoma de México
2014-2025
IAM RoadSmart
2009
Instituto de Geofísica y Astronomía
2003-2009
Laboratoire de Physique des 2 Infinis Irène Joliot-Curie
2003
Iqra University
2003
Alfred University
2003
We present here the analysis performed using pyPipe3D pipeline for final MaNGA dataset included in SDSS seventeenth data-release. This comprises more than 10,000 individual datacubes, being integral field spectroscopy galaxy survey with largest number of galaxies. processes IFS datacubes to extract spatially-resolved spectroscopic properties both stellar population and ionized-gas emission lines. A brief summary sample characteristics analyzed data are included. The article provides details...
By means of the fossil record method implemented through Pipe3D, we reconstruct global and radial stellar mass growth histories (MGHs) an unprecedentedly large sample galaxies, ranging from dwarf to giant objects, "Mapping Nearby Galaxies at Apache Point Observatory" survey. We confirm that main driver MGHs is mass, with more massive galaxies assembling their masses earlier (downsizing), though for a given segregate by color, specific star formation rate (sSFR), morphological type. From...
ABSTRACT We study the global star formation rate (SFR) versus stellar mass (M*) correlation, and spatially resolved SFR surface density (ΣSFR) (Σ*) in a sample of ∼2000 galaxies from MaNGA MPL-5 survey. classify areas into forming retired according to their ionization processes. confirm existence star-forming main sequence (SFMS) for areas, show that they have same nature, with as consequence local one. The latter presents bend below limit Σ* value, ≈3 × 107 M$\odot$ kpc−2, which is not...
The radio quasar 3C 454.3 underwent an exceptional optical outburst lasting more than 1 year and culminating in spring 2005. maximum brightness detected was R = 12.0, which represents the most luminous state thus far observed (M_B ~ -31.4). In order to follow emission behaviour of source detail, a large multiwavelength campaign organized by Whole Earth Blazar Telescope (WEBT). Continuous optical, near-IR monitoring performed several bands. ToO pointings Chandra INTEGRAL satellites provided...
We present the results of archaeological analysis stellar populations a sample ∼4000 galaxies observed by SDSS-IV MaNGA survey using pipe3d. Based on this we extract ∼150 000 star formation rates (SFRs) and masses that mimic single cosmological covering redshift range between |$z$| ∼ 0 7. confirm star-forming main sequence holds as tight relation in redshifts, evolving both zero-point slope. This evolution is different for local (SFGs) retired (RGs) galaxies, with latter presenting stronger...
ABSTRACT We present a detailed visual morphological classification for the 4614 MaNGA galaxies in SDSS Data Release 15, using image mosaics generated from combination of r band (SDSS and deeper DESI Legacy Surveys) images their digital post-processing. distinguish 13 Hubble types identify presence bars bright tidal debris. After correcting sample volume completeness, we calculate fractions, bi-variate distribution type stellar mass M* – where recognize transition ‘valley’ around S0a-Sa...
Abstract We employ the XGBoost machine learning (ML) method for morphological classification of galaxies into two (early-type, late-type) and five (E, S0–S0a, Sa–Sb, Sbc–Scd, Sd–Irr) classes, using a combination non-parametric (C, A, S, AS, Gini, M20, c5090), parametric (Sérsic index, n), geometric (axial ratio, BA), global colour (g − i, u r, i), gradient (Δ(g i)), asymmetry (ΔA9050) information, all estimated local galaxy sample (z < 0.15) compiled from Sloan Digital Sky Survey...
We explore how the slopes and scatters of scaling relations disk galaxies (Vm–L[–M], R–L[–M], Vm–R) change when moving from B- to K-bands stellar baryonic quantities. For our compiled sample 76 normal, non-interacting, high low-surface brightness (SB) disk-galaxies, we find important changes, which evidence evolution effects, mainly related gas infall star-formation (SF) processes. also correlations among (B − K) color, mass fraction, fs, mass, M, luminosity, L, surface density (or SB), as...
We present here the characterization of main properties a sample 98 AGN host galaxies, both type-II and type-I, in comparison with those about 2700 non-active galaxies observed by MaNGA survey. found that hosts are morphologically early-type or early-spirals. For given morphology are, average, more massive, compact, central peaked rather pressurethan rotational-supported systems. confirm previous results indicating located intermediate/transition region between star-forming non-star-forming...
We used ionized gas and stellar kinematics for 667 spatially resolved galaxies publicly available from the Calar Alto Legacy Integral Field Area survey (CALIFA) third Data Release with aim of studying kinematic scaling relations as Tully & Fisher (TF) relation using rotation velocity, Vrot, Faber Jackson (FJ) velocity dispersion, σ, also a combination Vrot σ through SK parameter defined |$S_{K}^2 = KV_{rot}^2 + \sigma ^2$| constant K. Late-type early-type reproduce TF FJ relations. Some...
We study the spatially resolved properties of 343 elliptical galaxies with MaNGA/SDSS-IV survey. used DESI Legacy Imaging Surveys for morphological classification. Based on integrated spectroscopic and colors, we classified seven classes ellipticals. inferred stellar age metallicity ($Z$) gradients out to a 1.5 effective radius classical "red dead", recently quenched, blue star-forming ellipticals (CLEs, RQEs, BSFs), corresponding 73%, 10%, 4% sample, respectively. reconstructed their global...
We have studied a sample of 89 very isolated, elliptical galaxies at z < 0.08 and compared their properties with located in high-density environment such as the Coma supercluster. Our aim is to probe role on morphological transformation quenching function mass. In addition, we elucidate nature particular set blue star-forming isolated ellipticals identified here. study physical color, specific star formation rate, galaxy size, stellar age, mass based SDSS data. analyze more detail,...
Estimating the bar pattern speed (\Om{}) is one of main challenges faced in understanding role stellar bars galaxy dynamical evolution. This work aims to characterise different uncertainty sources affecting Tremaine Weinberg (TW)-method study correlation between and galaxies physical parameters. We use a sample 15 MaNGA SDSS-IV 3 CALIFA from \cite{Aguerri2015}. studied errors related with (i) centre determination, (ii) disc position angle (PA) emphasising difficulties triggered by outer...
ABSTRACT Using spatially resolved fossil record analysis on a large sample of ‘red and dead’ elliptical galaxies (classical ellipticals, CLEs) from the MaNGA/SDSS-IV DR15 survey, we reconstruct archaeological evolution their radial gradients in mass-to-luminosity ratio (M/L), g − r colour, specific star formation (SF) rate. We also calculate other metrics that quantify inside-out SF quenching external mass growth processes. The M/L gradients, ∇Υ⋆, are approximately flat at high look-back...
We present a structural analysis of nearby galaxies in spiral-spiral pairs optical BVRI bands and compare them with the structures isolated spiral ongoing mergers. use these comparisons to determine how galaxy structure changes during interactions analyze light concentration (C), asymmetry (A), clumpiness (S) parameters, projections CAS parameter space samples. find that parameters paired are correlated projected separations pair. For widest closest pairs, tend be similar those major mergers...
We perform an exhaustive comparison among central galaxies from SDSS catalogs in different local environments at 0.01<=z<=0.08. The are separated into two categories: group centrals (host halos containing satellites) and field without satellites). From the latter, we select other subsamples: isolated bright centrals, both with same magnitude limit. stellar mass (Ms) distributions of different, which explains why general mainly located blue cloud/star forming regions, whereas strongly biased...
We compile and carrefully homogenize local galaxy samples with available information on stellar, $\rm HI$ and/or H_{2}$ masses, morphology. After processing the upper limits in case of non gas detections, we determine HI$- H_{2}$-to-stellar mass relations their $1\sigma$ scatter for both late- early-type galaxies. The obtained are fitted to single or double power laws. Late-type galaxies significantly richer than ones, specially at high masses. respective H_{2}$-to-$\rm ratios as a function...
Abstract We use the stellar kinematics for 2458 galaxies from MaNGA survey to explore a universal fundamental plane (UFP) described by equation <?CDATA $\mathrm{log}({{\rm{\Upsilon }}}_{e})=\mathrm{log}({S}_{0.5}^{2})-\mathrm{log}({I}_{e})-\mathrm{log}({R}_{e})+C$?> , defined logarithms of effective radius, R e ; surface brightness within Re, I dynamical mass-to-light ratio Y and total velocity parameter at ${S}_{K}^{2}={{KV}}_{{R}_{e}}^{2}+{\sigma }_{{\star }_{e}}^{2}$?> where...
ABSTRACT Most secular effects produced by stellar bars strongly depend on the pattern speed. Unfortunately, it is also most difficult observational parameter to estimate. In this work, we measured bar speed of 97 Milky-Way analogue galaxies from MaNGA survey using Tremaine–Weinberg method. The sample was selected constraining mass and morphological type. We improve our measurements weighting three independent estimates disc position angle. To recover rotation curve, fit a kinematic model H α...
ABSTRACT We present a study on the incidence of major mergers and their impact triggering nuclear activity in 47 type I 236 II optically selected AGN from MaNGA DR15 sample. From an estimate non-parametric image predictors (Gini, M20, concentration (C), asymmetry (A), clumpiness (S), Sérsic index (n), shape (AS)) using SDSS images, combination with Linear Discriminant Analysis Method, we identified merger stages. reinforced our results by looking for bright tidal features post-processed DESI...
We present a re-evaluation of the optical morphology for 549 galaxies from Catalog Isolated Galaxies in Northern Hemisphere (CIG) that are available Sloan Digital Sky Survey (SDSS; DR6). Both high resolution and dynamic range SDSS images our semiautomatic image processing scheme allow major quality uniform morphological analysis. The includes (1) sky-subtracted, cleaned, logarithmic scaled g-band images, (2) filtered-enhanced versions (1), (3) corresponding red-green-blue (RGB) composed...
We have compiled a sample of disk galaxies with available photometry in the B and K bands, velocity line-widths HI integral fluxes. Several parameters that trace luminous, baryonic dark matter contents were inferred. investigated how these vary different galaxy properties, compared results predictions evolutionary models context Λ Cold Dark Matter (ΛCDM) cosmogony. The ratio disk-to-total maximum circular velocity, , depends mainly on central surface density (or brightness, SB), increasing...
A new catalog of isolated galaxies from the Sloan Digital Sky Survey Data Release 5 (SDSS DR5) is presented. total 1520 were found in 1.4 sr sky. The selection criteria this UNAM-KIAS are a variation on developed by Karachentseva, including full redshift information. Through an image processing pipeline that takes advantage high-resolution (∼04 pixel−1) and high dynamic range SDSS images, uniform g-band morphological classification for all these We identify 80% (Sa-Sm) spirals (50% later...