LMC X-1: A New Spectral Analysis of the O-star in the binary and surrounding nebula

Abstract

We provide new observations of the LMC X-1 O star and its extended nebula structure using spectroscopic data from VLT/UVES as well as H$\alpha$ imaging from the Wide Field Imager on the Max Planck Gesellschaft / European Southern Observatory 2.2m telescope and ATCA imaging of the 2.1 GHz radio continuum. This nebula is one of the few known to be energized by an X-ray binary. We use a new spectrum extraction technique that is superior to other methods to obtain both radial velocities and fluxes. This provides an updated spatial velocity of $\simeq 21.0\pm 4.8$ km s${}^{-1}$ for the O star. The slit encompasses both the photo-ionized and shock-ionized regions of the nebula. The imaging shows a clear arc-like structure reminiscent of a wind bow shock in between the ionization cone and shock-ionized nebula. The observed structure can be fit well by the parabolic shape of a wind bow shock. If an interpretation of a wind bow shock system is valid, we investigate the N159-O1 star cluster as a potential parent of the system, suggesting a progenitor mass of $\sim 60$ M${}_{\odot }$ for the black hole. We further note that the radio emission could be non-thermal emission from the wind bow shock, or synchrotron emission associated with the jet inflated nebula. For both wind and jet-powered origins, this would represent one of the first radio detections of such a structure.

arXiv comment7 Figures, 4 Tables

References in corpus (34)

• How Massive Single Stars End their Life
• Mass-loss predictions for O and B stars as a function of metallicity
• Foundations of Black Hole Accretion Disk Theory
• Theoretical Black Hole Mass Distributions
• A dark jet dominates the power output of the stellar black hole Cygnus X-1
• GaBoDS: The Garching-Bonn Deep Survey; IV. Methods for the Image reduction of multi-chip Cameras
• Large-Scale, Decelerating, Relativistic X-ray Jets from the Microquasar XTE J1550-654
• High Resolution Imaging of the HeII lambda 4686 Emission Line Nebula Associated with the Ultraluminous X-Ray Source in Holmberg II
• A high-velocity black hole on a Galactic-halo orbit in the solar neighborhood
• A New Dynamical Model for the Black Hole Binary LMC X-1
• Formation of a Black Hole in the Dark
• Fast infrared variability from a relativistic jet in GX 339-4
• Fundamental Properties of O-Type Stars
• The jet-powered optical nebula of Cygnus X-1
• Early Results from the Galactic O-Star Spectroscopic Survey: C III Emission Lines in Of Spectra
• Opening angles, Lorentz factors and confinement of X-ray binary jets
• Accretion Disk Spectra of the Ultra-luminous X-ray Sources in Nearby Spiral Galaxies and Galactic Superluminal Jet Sources
• An ATCA 20cm Radio Continuum Study of the Large Magellanic Cloud
• Discovery of a bow shock around Vela X-1
• The runaway black hole GRO J1655-40
• Detection of nonthermal emission from the bow shock of a massive runaway star
• A Photoionized Nebula Surrounding and Variable Optical Continuum Emission from the Ultraluminous X-Ray Source in NGC 5408
• On the absence of wind bow-shocks around OB-runaway stars: probing the physical conditions of the interstellar medium
• The population of massive X-ray binaries I. The Large Magellanic Cloud
• A New Population of Planetary Nebulae Discovered in the Large Magellanic Cloud (III): The Luminosity Function
• The large-scale jet-powered radio nebula of Circinus X-1
• Large Highly-Ionized Nebulae Around Ultra-luminous X-ray Sources
• Shell-Shocked: The Interstellar Medium Near Cygnus X-1
• Jet trails and Mach cones: The interaction of microquasars with the ISM
• Ionization Cone in the X-ray Binary LMC X-1
• Discovery of a large and bright bow shock nebula associated with low mass X-ray binary SAX J1712.6-3739
• Spectacular Trailing Streamers near LMC X-1: The First Evidence of a Jet?
• A fast and portable Re-Implementation of Piskunov and Valenti's Optimal-Extraction Algorithm with improved Cosmic-Ray Removal and Optimal Sky Subtraction
• Resolving SNR 0540-6944 from LMC X-1 with Chandra

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