A forming, dust enshrouded disk at z=0.43: the first example of a late type disk rebuilt after a major merger?

Abstract

Abreg: By combining HST/UDF imagery with kinematics from VLT/GIRAFFE we derive a physical model of distant galaxy J033245.11-274724.0 in a way similar to what can be done in the nearby Universe. Here we study the properties of a distant compact LIRGs galaxy. Given the photometric and spectro photometric accuracies, we can decompose the galaxy in sub components and correct them for reddening. The galaxy is dominated by a dust enshrouded disk revealed by UDF imagery. The disk radius is half that of the Milky Way and the galaxy have a SFR=20Mo/yr. Morphology and kinematics show that gas and stars together spiral inwards rapidly to feed the disk and the central regions. A combined system of a bar and two non rotating spiral arms regulates the material accretion, induces large sigma, with sigma larger than 100 km/s and redistributes the angular momentum (AM). The detailed physical properties resemble to the expectations from modeling a merger of two equal mass, gaseous rich galaxies, 0.5 Gyr after the merger. In its later evolution, this galaxy could become a late type galaxy which falls on the T-F relation, with an AM mostly induced by the orbital AM of the merger.

arXiv comment(1) GEPI observatoire de Paris Meudon (2) LAM (3) ESO Garching (4) IAP Accepted for publication in A&A

References in corpus (27)

• The cosmological simulation code GADGET-2
• The Formation of Galactic Disks
• The Mass-Metallicity Relation at z~2
• Absorption-Line Probes of Gas and Dust in Galactic Superwinds
• Forming Disk Galaxies in Lambda CDM Simulations
• A Merger-Driven Scenario for Cosmological Disk Galaxy Formation
• The Evolution of Galaxy Mergers and Morphology at z<1.2 in the Extended Groth Strip
• Formation of gas disks in merging galaxies
• Feedback, Disk Self-regulation and Galaxy Formation
• The cosmological origin of the Tully-Fisher relation
• The Milky Way: An Exceptionally Quiet Galaxy; Implications for the formation of spiral galaxies
• Did most present-day spirals form during the last 8 Gyrs? A formation history with violent episodes revealed by panchromatic observations
• The merger rate of massive galaxies
• On the accretion origin of a vast extended stellar disk around the Andromeda galaxy
• HST imaging of CFRS and LDSS galaxies - I: Morphological Properties
• IMAGES-III: The evolution of the Near-Infrared Tully-Fisher relation over the last 6 Gyr
• Luminous compact galaxies at intermediate redshifts: progenitors of bulges of massive spirals ?
• NGC1614: A Laboratory for Starburst Evolution
• IMAGES I. Strong evolution of galaxy kinematics since z=1
• Galaxy Mergers at z>1 in the HUDF: Evidence for a Peak in the Major Merger Rate of Massive Galaxies
• The Extended Star Formation History of the Andromeda Spheroid at 35 Kpc on the Minor Axis
• IMAGES II. A surprisingly low fraction of undisturbed rotating spiral disks at z~0.6: The morpho-kinematical relation 6 Gyrs ago
• Images IV: Strong evolution of the oxygen abundance in gaseous phases of intermediate mass galaxies since z=0.8
• 3D spectroscopy with VLT/GIRAFFE - II: Are Luminous Compact Galaxies merger remnants ?
• Significant evolution of the stellar mass-metallicity relation since z~0.65
• Towards a robust estimate of the merger rate evolution using near-IR photometry
• Unravelling the morphologies of Luminous Compact Galaxies using the HST/ACS GOODS survey

Cited by in corpus (31)

• Star Formation in Galaxy Mergers with Realistic Models of Stellar Feedback & the Interstellar Medium
• Gas-Rich Mergers in LCDM: Disk Survivability and the Baryonic Assembly of Galaxies
• Forming disk galaxies in wet major mergers. I. Three fiducial examples
• The Hubble sequence: just a vestige of merger events?
• What Causes The Formation of Disks and End of Bursty Star Formation?
• Avoiding progenitor bias: The structural and mass evolution of Brightest Group and Cluster Galaxies in Hierarchical models since z~1
• The baryonic content and Tully-Fisher relation at z~0.6
• Clumpy galaxies at z~0.6: kinematics, stability, and comparison with analogs at other redshifts
• Formation of S0 galaxies through mergers. Morphological properties: tidal relics, lenses, ovals, and other inner components
• NIHAO VI. The hidden discs of simulated galaxies
• Galaxy disks do not need to survive in the L-CDM paradigm: the galaxy merger rate out to z~1.5 from morpho-kinematic data
• Formation of S0 galaxies through mergers. V. Antitruncated stellar discs resulting from major mergers
• Evolution of blue E/S0 galaxies from z~1: merger remnants or disk rebuilding galaxies?
• Evolutionary paths among different red galaxy types at 0.3 < z < 1.5 and the late buildup of massive E-S0's through major mergers
• Evolution induced by dry minor mergers onto fast-rotator S0 galaxies
• Disc galaxies formed from major mergers in Illustris
• The structural properties of classical bulges and discs from z~2
• A decrease of the gas exchanges between galaxies and the IGM, from 12 to 6 billion years ago
• On the buildup of massive early-type galaxies at z<~1. I- Reconciling their hierarchical assembly with mass-downsizing
• The PUMA project. III. Incidence and properties of ionised gas disks in ULIRGs, associated velocity dispersion and its dependence on starburstiness
• Morphology with Light Profile Fitting of Confirmed Cluster Galaxies at z=0.84
• The NGC 4013 tale: a pseudo-bulged, late-type spiral shaped by a major merger
• Evolution of the anti-truncated stellar profiles of S0 galaxies since $z=0.6$ in the SHARDS survey: II - Structural and photometric evolution
• Forming disc galaxies in major mergers II. The central mass concentration problem and a comparison of GADGET3 with GIZMO
• Disentangling the morpho-kinematic properties of a face-on merger at z~0.7
• The fragility of thin discs in galaxies -- I. Building tailored N-body galaxy models
• The fragility of thin discs in galaxies -- II. Thin discs as tracers of the assembly history of galaxies
• Time-average properties of $z\sim 0.6$ major mergers: mergers significantly scatter high-z scaling relations
• The Evolution of the Hubble Sequence: morpho-kinematics of distant galaxies
• Oxford SWIFT IFS and multi-wavelength observations of the Eagle galaxy at z=0.77
• The Formation of Large Galactic Disks: Revival or Survival?