Metallicity and X-ray luminosity variations in NGC 922

Abstract

We present a systematic study of the metallicity variations within the collisional ring galaxy NGC 922 based on long-slit optical spectroscopic observations. We find a metallicity difference between star-forming regions in the bulge and the ring, with metallicities ranging from almost solar to significantly sub-solar ($[12+\log (O/H)]\sim 8.2$). We detect $\mathrm{He}{}_{\mathrm{I}}$ emission in the bulge and the ring star-forming regions indicating ionization from massive stars associated with recent ($<10$ Myr) star-formation, in agreement with the presence of very young star-clusters in all studied regions. We find an anti-correlation between the X-ray luminosity and metallicity of the sub-galactic regions of NGC 922. The different regions have similar stellar population ages leaving metallicity as the main driver of the anti-correlation. The dependence of the X-ray emission of the different regions in NGC 922 on metallicity is in agreement with similar studies of the integrated X-ray output of galaxies and predictions from X-ray binary population models.

arXiv comment15 pages, 10 figures

References in corpus (50)

• Stellar population synthesis at the resolution of 2003
• The chemical composition of the Sun
• Coevolution (Or Not) of Supermassive Black Holes and Host Galaxies
• The Host Galaxies of AGN
• On the Absorption of X-rays in the Interstellar Medium
• The Origin of the Mass--Metallicity Relation: Insights from 53,000 Star-Forming Galaxies in the SDSS
• Theoretical Modeling of Starburst Galaxies
• The Host Galaxies and Classification of Active Galactic Nuclei
• [O III]/[N II] as an Abundance Indicator at High Redshift
• HI4PI: A full-sky HI survey based on EBHIS and GASS
• Metallicity Calibrations and the Mass-Metallicity Relation for Star-Forming Galaxies
• The Calibration of Mid-Infrared Star Formation Rate Indicators
• The host galaxies of radio-loud AGN: mass dependencies, gas cooling and AGN feedback
• Metallicities of 0.3<z<1.0 Galaxies in the GOODS-North Field
• X-ray emission from star-forming galaxies - I. High-mass X-ray binaries
• The Chandra Source Catalog
• Ultraluminous X-Ray Sources
• Optical Spectroscopy and Nebular Oxygen Abundances of the Spitzer/SINGS Galaxies
• The 1000 Brightest HIPASS Galaxies: HI Properties
• Spectroscopy of Outlying H II Regions in Spiral Galaxies: Abundances and Radial Gradients
• Sherpa: a Mission-Independent Data Analysis Application
• Low mass X-ray binaries as a stellar mass indicator for the host galaxy
• Radiation Backgrounds at Cosmic Dawn: X-Rays from Compact Binaries
• New Strong Line Abundance Diagnostics for \HII Regions: Effects of $\kappa$-Distributed Electron Energies and New Atomic Data
• X-ray Binary Evolution Across Cosmic Time
• Energy Feedback from X-ray Binaries in the Early Universe
• Semi-empirical analysis of Sloan Digital Sky Survey galaxies: II. The bimodality of the galaxy population revisited
• The Luminosity-Metallicity relation in the local universe from the 2dF Galaxy Redshift Survey
• Calibrating Star Formation in WISE using Total Infrared Luminosity
• IZI: Inferring the Gas Phase Metallicity (Z) and Ionization Parameter (q) of Ionized Nebulae using Bayesian Statistics
• Low metallicity and ultra-luminous X-ray sources in the Cartwheel galaxy
• Enhanced X-ray emission from Lyman Break Analogues and a Possible $L_{\mathrm{X}}$--SFR--Metallicity Plane
• A census of ultraluminous X-ray sources in the local Universe
• SDSS-IV MaNGA: Modelling the metallicity gradients of gas and stars - radially dependent metal outflow vs IMF
• A thorough study of the intriguing X-ray emission from the Cartwheel ring
• Connecting the metallicity dependence and redshift evolution of high-mass X-ray binaries
• The MOSDEF Survey: The Metallicity Dependence of X-ray Binary Populations at $z\sim 2$
• Ring Galaxies in the EAGLE Hydrodynamical Simulations
• Sub-galactic scaling relations between X-ray luminosity, star-formation rate, and stellar mass
• The Star Cluster Population of the Collisional Ring Galaxy NGC 922
• NGC 2276: a remarkable galaxy with a large number of ULXs
• NGC922 - A new drop-through ring galaxy
• The evolving AGN duty cycle in galaxies since z$\sim$3 as encoded in the X-ray luminosity function
• SWIFT Observations of the Arp 147 Ring galaxy system
• Metallicity and ionization state of the gas in polar-ring galaxies
• The X-Ray Luminosity Function of Ultra Luminous X-Ray Sources in Collisional Ring Galaxies
• Do sub-galactic regions follow the galaxy-wide X-ray scaling relations? The example of NGC 3310 and NGC 2276
• An HI study of the collisional ring galaxy NGC 922
• Chandra Observations of the Collisional Ring Galaxy NGC 922
• Dependence of Nebular Heavy-Element Abundance on H I Content for Spiral Galaxies

Cited by in corpus (8)

• Stripped-envelope stars in different metallicity environments. II. Type I supernovae and compact remnants
• A giant umbrella-like stellar stream around the tidal ring galaxy NGC 922
• The Star Formation Reference Survey-V: the effect of extinction, stellar mass, metallicity, and nuclear activity on star-formation rates based on H$\alpha$ emission
• The first all-sky survey of star-forming galaxies with eROSITA: Scaling relations and a population of X-ray luminous starbursts
• X-ray observations of Blueberry galaxies
• The largest bright ULX population in a galaxy: X-ray variability and Luminosity Function in the Cartwheel ring Galaxy
• The Large Deficit of HMXB Emission from Luminous Infrared Galaxies: the Case of the Circumnuclear Starburst Ring in NGC 7552
• Nebular abundance gradient in the Cartwheel galaxy using MUSE data