Evidence for the formation of the young counter-rotating stellar disk from gas acquired by IC 719

Abstract

The formation scenario of extended counter-rotating stellar disks in galaxies is still debated. In this paper, we study the S0 galaxy IC 719 known to host two large-scale counter-rotating stellar disks in order to investigate their formation mechanism. We exploit the large field of view and wavelength coverage of the Multi Unit Spectroscopic Explorer (MUSE) spectrograph to derive two-dimensional (2D) maps of the various properties of the counter-rotating stellar disks, such as age, metallicity, kinematics, spatial distribution, the kinematical and chemical properties of the ionized gas, and the dust map. Due to the large wavelength range, and in particular to the presence of the Calcium Triplet 8498, 8542, 8662Å(CaT hereafter), the spectroscopic analysis allows us to separate the two stellar components in great detail. This permits precise measurement of both the velocity and velocity dispersion of the two components as well as their spatial distribution. We derived a 2D map of the age and metallicity of the two stellar components as well as the star formation rate and gas-phase metallicity from the ionized gas emission maps. The main stellar disk of the galaxy is kinematically hotter, older, thicker and with larger scale-length than the secondary disk. There is no doubt that the latter is strongly linked to the ionized gas component: they have the same kinematics and similar vertical and radial spatial distribution. This result is in favor of a gas accretion scenario over a binary merger scenario to explain the origin of counter-rotation in IC 719. One source of gas that may have contributed to the accretion process is the cloud that surrounds IC 719.

arXiv comment13 pages, 20 figures, accepted for publication in A&A

References in corpus (48)

• Star Formation in Galaxies Along the Hubble Sequence
• Theoretical Modeling of Starburst Galaxies
• Parametric Recovery of Line-of-Sight Velocity Distributions from Absorption-Line Spectra of Galaxies via Penalized Likelihood
• The Dependence of Star Formation History and Internal Structure on Stellar Mass for 10^5 Low-Redshift Galaxies
• Adaptive spatial binning of integral-field spectroscopic data using Voronoi tessellations
• The MUSE second-generation VLT instrument
• An updated MILES stellar library and stellar population models
• Automated data reduction workflows for astronomy
• The O3N2 and N2 abundance indicators revisited: improved calibrations based on CALIFA and Te-based literature data
• An extensive library of 2500-10500 Ang synthetic spectra
• MIUSCAT: extended MILES spectral coverage. I. Stellar populations synthesis models
• Spatially resolved spectroscopy of Coma cluster early -- type galaxies: III. The stellar population gradients
• Spatially-Resolved Star Formation Main Sequence of Galaxies in the CALIFA Survey
• Flux-calibrated stellar population models of Lick absorption-line indices with variable element abundance ratios
• Stellar metallicity of star-forming galaxies at z ~ 3
• Dating the formation of the counter-rotating stellar disc in the spiral galaxy NGC 5719 by disentangling its stellar populations
• Dominant dark matter and a counter rotating disc: MUSE view of the low luminosity S0 galaxy NGC 5102
• The HI content of early-type galaxies from the ALFALFA survey. II. The case of low density environments
• On the spectral resolution of the MILES stellar library
• The Intrinsic Shape of Galaxies in SDSS/Galaxy Zoo
• Molecular gas and star formation in the red-sequence counter-rotating disc galaxy NGC 4550
• The Bulge-Disk Orthogonal Decoupling in Galaxies: NGC 4698
• SPH Simulations of Counterrotating Disk Formation in Spiral Galaxies
• Counterrotating Stars in Simulated Galaxy Disks
• Building gas rings and rejuvenating S0 galaxies through minor mergers
• Untangling galaxy components: full spectral bulge-disc decomposition
• Disentangling the stellar populations in the counter-rotating disc galaxy NGC 4550
• The impact of alpha/Fe enhanced stellar evolutionary tracks on the ages of elliptical galaxies
• Disk heating agents across the Hubble sequence
• NGC 4138 - A Case Study in Counterrotating Disk Formation
• Spectroscopic evidence of distinct stellar populations in the counter-rotating stellar disks of NGC 3593 and NGC 4550
• Minor mergers and their impact on the kinematics of old and young stellar populations in disk galaxies
• Structure and dynamics of galaxies with a low surface-brightness disc - II. Stellar populations of bulges
• Stellar populations in the bulges of isolated galaxies
• Stellar counter-rotation in lenticular galaxy NGC 448
• Polar bulges and polar nuclear discs: the case of NGC 4698
• The Formation of S0 Galaxies with Counter-Rotating Neutral and Molecular Hydrogen
• Lenticular galaxy IC 719: current building of the counterrotating large-scale stellar disk
• The properties and the formation mechanism of the stellar counter-rotating components in NGC 4191
• The difference in age of the two counter-rotating stellar disks of the spiral galaxy NGC 4138
• Formation of massive counter-rotating disks: an alternative scenario
• Re-growth of stellar disks in mature galaxies: The two component nature of NGC 7217 revisited with VIRUS-W
• The Hi Environment of Counter-rotating Gas Hosts: Gas Accretion from Cold Gas Blobs
• The Orthogonal Gaseous Kinematical Decoupling in the Sa Spiral NGC 2855
• Kinematic and stellar population properties of the counter-rotating components in the S0 galaxy NGC 1366
• Spectral decomposition of the stellar kinematics in the polar disk galaxy NGC 4650A
• The UV window on counter rotating ETGs: insight from SPH simulations with chemo-photometric implementation
• Improved method to determine the integrated properties of nuclear rings: NGC 1512

Cited by in corpus (45)

• Ghostly Tributaries to the Milky Way: Charting the Halo's Stellar Streams with the Gaia DR2 catalogue
• {\em Gaia}-derived luminosities of {\em Kepler} A/F stars and the pulsator fraction across the δ Scuti instability strip
• Ages and kinematics of chemically selected, accreted Milky Way halo stars
• Model independent $H(z)$ reconstruction using the cosmic inverse distance ladder
• NGTS-4b: A sub-Neptune Transiting in the Desert
• Empirical Bolometric Correction Coefficients for Nearby Main-Sequence Stars in Gaia Era
• HARPS-N radial velocities confirm the low densities of the Kepler-9 planets
• GASP. XII. The variety of physical processes occurring in a single galaxy group in formation
• On the origin of star-gas counterrotation in low-mass galaxies
• The Cygnus Loop's Distance, Properties, and Environment Driven Morphology
• Extreme kinematic misalignment in IllustrisTNG galaxies: the origin, structure and internal dynamics of galaxies with a large-scale counterrotation
• Disentangling the formation history of galaxies via population-orbit superposition: method validation
• The ASAS-SN Catalog of Variable Stars VII: Contact Binaries are Different Above and Below the Kraft Break
• Mass function and dynamical study of the open clusters Berkeley 24 and Czernik 27
• Precision angular diameters for 16 southern stars with VLTI/PIONIER
• SDSS-IV MaNGA: Integral-field kinematics and stellar population of a sample of galaxies with counter-rotating stellar disks selected from about 4000 galaxies
• On measuring the Galactic dark matter halo with hypervelocity stars
• Hubble Space Telescope analysis of stellar populations within the globular cluster G1 (Mayall II) in M31
• Signs of accretion in the white dwarf + brown dwarf binary NLTT5306
• An investigation of open clusters Berkeley 68 and Stock 20 using CCD UBV and Gaia DR3 data
• Double-peak emission line galaxies in the SDSS catalogue. A minor merger sequence
• Hot and counter-rotating star-forming disk galaxies in IllustrisTNG and their real-world counterparts
• A-type stars in the Canada-France Imaging Survey II. Tracing the height of the disc at large distances with Blue Stragglers
• The MASSIVE Survey XIV -- Stellar Velocity Profiles and Kinematic Misalignments from 200 pc to 20 kpc in Massive Early-type Galaxies
• BAYES-LOSVD: a bayesian framework for non-parametric extraction of the line-of-sight velocity distribution of galaxies
• Gas and stellar kinematic misalignment in MaNGA galaxies: what is the origin of counter-rotating gas?
• A photometric and astrometric study of the open clusters NGC 1664 and NGC 6939
• A study of the Czernik 2 and NGC 7654 open clusters using CCD UBV photometric and Gaia EDR3 data
• DW Cancri in x-rays
• Different Formation Scenarios of Counter-rotating Stellar Disks in Nearby Galaxies
• The relative efficiencies of bars and clumps in driving disc stars to retrograde motion
• A dense mini-Neptune orbiting the bright young star HD 18599
• Atomic Hydrogen Clues to the Formation of Counterrotating Stellar Discs
• Increasing the census of L and T dwarfs in wide binary and multiple systems using Dark Energy Survey DR1 and Gaia DR2 data
• Which Stars can see Earth as a Transiting Exoplanet?
• Colorado Ultraviolet Transit Experiment Data Simulator
• NGC 7457: Evidence for merger-driven cylindrical rotation in disc galaxies
• Around which stars can TESS detect Earth-like planets? The Revised TESS Habitable Zone Catalog
• Probabilistic galactic dynamics I - the Sun and GJ 710 with Monte Carlo, linearised and unscented treatments
• Bulgeless Evolution And the Rise of Discs (BEARD) II. The role of mergers in shaping the Milky Way analogues in TNG50
• Stellar CoRGI in MaNGA: Stellar Counterrotating Galaxies Identified in the MaNGA Survey
• Study of Eclipsing Binary and Multiple Systems in OB Associations V: MQ Cen in Crux OB1
• Metallicity and absolute magnitude calibrations for F-G type main-sequence stars in the Gaia era
• The morphology and kinematics of the galaxy group AM 1054-325: A MUSE perspective
• Detectability of large-scale counter-rotating stellar disks in galaxies with integral-field spectroscopy