XMM-Newton observations of the starburst merger galaxies NGC 3256 & NGC 3310
arXiv:astro-ph/0405285 · doi:10.1111/j.1365-2966.2004.08025.x
Abstract
We present XMM-Newton EPIC observations of the two nearby starburst merger galaxies NGC 3256 & NGC 3310. The broad-band (0.3-10 keV) integrated X-ray emission from both galaxies shows evidence of multi-phase thermal plasmas plus an underlying hard non-thermal power-law continuum. NGC 3256 is well-fit with a model comprising two MEKAL components (kT=0.6/0.9 keV) plus a hard power-law (Gamma=2), while NGC 3310 has cooler MEKAL components (kT=0.3/0.6 keV) and a harder power-law tail (Gamma=1.8). Chandra observations of these galaxies both reveal the presence of numerous discrete sources embedded in the diffuse emission, which dominate the emission above ~2 keV and are likely to be the source of the power-law emission. The thermal components show a trend of increasing absorption with higher temperature, suggesting that the hottest plasmas arise from supernova-heated gas within the disks of the galaxies, while the cooler components arise from outflowing galactic winds interacting with the ambient interstellar medium (ISM). We find no strong evidence for an active galactic nucleus (AGN) in either galaxy.
arXiv comment14 pages,4 figures.Accepted for publication in MNRAS
References in corpus (50)
- The Global Schmidt Law in Star Forming Galaxies
- A Search for "Dwarf" Seyfert Nuclei. III. Spectroscopic Parameters and Properties of the Host Galaxies
- A Deep Sub-millimeter Survey of Lensing Clusters: A New Window on Galaxy Formation and Evolution
- The IRAS Revised Bright Galaxy Sample (RBGS)
- The Rest Frame Optical Spectra of Lyman Break Galaxies: Star Formation, Extinction, Abundances, and Kinematics
- Discovery of a binary AGN in the ultraluminous infrared galaxy NGC 6240 using Chandra
- The Luminosity Function of Young Star Clusters In "The Antennae" Galaxies (NGC 4038/4039)
- Starbursts and Star Clusters in the Ultraviolet
- Intermediate-Mass Black Holes
- The Ultraviolet Spectrum of MS 1512-cB58: An Insight into Lyman Break Galaxies
- Starburst-driven galactic winds: I. Energetics and intrinsic X-ray emission
- XMM-Newton observation of the Lockman Hole; I. The X-ray Data
- Ultra-Luminous Infrared Mergers: Elliptical Galaxies in Formation?
- Chandra Observations of "The Antennae" Galaxies (NGC 4038/39)
- A ROSAT HRI survey of bright nearby galaxies
- Chandra observations of NGC 253. II: On the origin of diffuse X-ray emission in the halos of starburst galaxies
- A Long-Wavelength View on Galaxy Evolution from Deep Surveys by the Infrared Space Observatory
- Discovery of a Luminous, Variable, Off-Center Source in the Nucleus of M82 with the Chandra HRC
- Old and Young X-ray Point Source Populations in Nearby Galaxies
- Chandra observations of NGC 253: New insights into the nature of starburst-driven superwinds
- X-Rays from NGC 3256: High-Energy Emission in Starburst Galaxies and Their Contribution to the Cosmic X-Ray Background
- The X-ray Source Population of "The Antennae" Galaxies: X-ray Properties from Chandra and Multiwavelength Associations
- An XMM-Newton hard X-ray survey of ULIRGs
- Non-Nuclear Hyper/Ultraluminous X-Ray Sources in the Starbursting Cartwheel Ring Galaxy
- Chandra Observations of the Luminous IR Galaxy NGC3256
- Arp 299: a second merging system with two active nuclei?
- The X-ray Luminosity Function of "The Antennae" Galaxies (NGC4038/39) and the Nature of Ultra-Luminous X-ray Sources
- A Mini-survey of X-ray Point Sources in Starburst and Non-Starburst Galaxies
- XMM-Newton observations of NGC 253: Resolving the emission components in the disk and nuclear area
- XMM-Newton observations of the Lockman Hole V: time variability of the brightest AGN
- ROSAT and ASCA Observations of X-ray Luminous starburst Galaxies : NGC3310 and NGC3690
- The Complex X-ray Spectra of M82 and NGC 253
- X-Ray Spectral Components of Starburst Galaxies
- Iron and Nickel properties in the X-ray reflecting region of the Circinus Galaxy
- A Chandra observation of the interacting pair of galaxies NGC 4485/NGC 4490
- The X-ray Evolution of Merging Galaxies
- Ultraluminous X-ray Sources and Star Formation
- Chandra observations of the X-ray luminous star-forming galaxy merger Arp~299
- Chandra observations of five ultraluminous X-ray sources in nearby galaxies
- Luminous Infrared Galaxies. III. Multiple Merger, Extended Massive Star Formation, Galactic-Wind and Nuclear-Inflow in NGC 3256
- Chandra Observations of "The Antennae" Galaxies (NGC 4038/39): II. Detection and Analysis of Galaxian X-ray source
- High-resolution X-ray imaging and spectroscopy of the core of NGC 4945 with XMM-Newton and Chandra
- High-resolution X-ray spectroscopy and imaging of supernova remnant N132D
- First Look XMM-Newton EPIC Observations of the Prototypical Starburst Galaxy M82
- Panchromatic Study of Nearby UV-Bright Starburst Galaxies: Implications for Massive Star Formation and High Redshift Galaxies
- NGC 3256: Kinematic anatomy of a merger
- Radio Emission Associated with Ultraluminous X-ray Sources in the Galaxy Merger NGC 3256
- NGC 3310, a galaxy merger?
- XMM-Newton observation of the ULIRG NGC 6240: The physical nature of the complex Fe K line emission
- The Multi-Colored Hot Interstellar Medium of "The Antennae" Galaxies (NGC 4038/39)
Cited by in corpus (25)
- Supernova feedback efficiency and mass loading in the starburst and galactic superwind exemplar M82
- 2XMM Ultraluminous X-Ray Source Candidates in Nearby Galaxies
- The most extreme ultraluminous X-ray sources: evidence for intermediate-mass black holes?
- Cold Molecular Gas in Merger Remnants: I. Formation of Molecular Gas Disks
- A Luminous Infrared Merger with Two Bipolar Molecular Outflows: ALMA and SMA Observations of NGC 3256
- The X-ray emission of local luminous infrared galaxies
- Galactic star-formation rates gauged by stellar end-products
- Submillimeter-HCN Diagram for an Energy Diagnostics in the Centers of Galaxies
- Testing the Paradigm that Ultraluminous X-ray Sources as a Class Represent Accreting Intermediate-Mass Black Holes
- Imaging Molecular Gas in the Luminous Merger NGC 3256 : Detection of High-Velocity Gas and Twin Gas Peaks in the Double Nucleus
- Outflow of hot and cold molecular gas from the obscured secondary nucleus of NGC3256: closing in on feedback physics
- X-ray observations of three young, early-type galaxies
- New water masers in Seyfert and FIR bright galaxies. IV. Interferometric follow-ups
- On the nuclear obscuration of H2O maser galaxies
- A deficit of ultraluminous X-ray sources in luminous infrared galaxies
- Searching for hidden AGN in nearby star-forming galaxies with Chandra
- A study of X-ray emission of galaxies hosting molecular outflows (MOX sample)
- An XMM-Newton view of M101 - III. Diffuse X-ray emission
- New H2O masers in Seyfert and FIR bright galaxies. III. The Southern Sample
- XMM-Newton observations of the interacting galaxy pairs NGC7771/0 and NGC2342/1
- XMM-Newton view of galaxy pairs: activation of quiescent black holes?
- Dense circum-nuclear molecular gas in starburst galaxies
- Ionizing stellar population in the disc of NGC 3310 - II. The Wolf-Rayet population
- Secondary Radio and X-ray Emissions from Galaxy Mergers
- On the nature of high X-ray luminosities in SDSS galaxies