A search for runaway stars in twelve Galactic supernova remnants

Abstract

Runaway stars can result from core-collapse supernovae in multiple stellar systems. If the supernova disrupts the system, the companion gets ejected with its former orbital velocity. A clear identification of a runaway star can yield the time and place of the explosion as well as orbital parameters of the pre-supernova binary system. Previous searches have mostly considered O- and B-type stars as runaway stars because they are always young in absolute terms (not much older than the lifetime of the progenitor) and can be detected up to larger distances. We present here a search for runaway stars of all spectral types. For late-type stars, a young age can be inferred from the lithium test. We used Gaia data to identify and characterise runaway star candidates in nearby supernova remnants, obtained spectra of 39 stars with UVES at the VLT and HDS at the Subaru telescope and found a significant amount of lithium in the spectra of six dwarf stars. We present the spectral analysis, including measurements of radial velocities, atmospheric parameters and lithium abundances. Then we estimate the ages of our targets from the Hertzsprung-Russell diagram and with the lithium test, present a selection of promising runaway star candidates and draw constraints on the number of ejected runaway stars compared to model expectations.

arXiv comment26 pages, 11 figures, 9 tables, accepted for publication in AN

References in corpus (49)

• Gaia Data Release 2. Summary of the contents and survey properties
• The Gaia mission
• PARSEC: stellar tracks and isochrones with the PAdova and TRieste Stellar Evolution Code
• The ATNF Pulsar Catalogue
• Intrinsic Colors, Temperatures, and Bolometric Corrections of Pre-Main Sequence Stars
• Binary interaction dominates the evolution of massive stars
• Gaia Data Release 1. Summary of the astrometric, photometric, and survey properties
• Estimating distances from parallaxes IV: Distances to 1.33 billion stars in Gaia Data Release 2
• Grids of stellar models with rotation - I. Models from 0.8 to 120 Msun at solar metallicity (Z = 0.014)
• A statistical study of 233 pulsar proper motions
• Mind your Ps and Qs: the Interrelation between Period (P) and Mass-ratio (Q) Distributions of Binary Stars
• Achieving better than 1 minute accuracy in the Heliocentric and Barycentric Julian Dates
• Gaia Data Release 2: Photometric content and validation
• The Ages of Stars
• Determining stellar atmospheric parameters and chemical abundances of FGK stars with iSpec
• On the origin of the O and B-type stars with high velocities II Runaway stars and pulsars ejected from the nearby young stellar groups
• Modern stellar spectroscopy caveats
• Time scales of Li evolution: a homogeneous analysis of open clusters from ZAMS to late-MS
• Photo-astrometric distances, extinctions, and astrophysical parameters for Gaia DR2 stars brighter than G = 18
• A Census of High-Energy Observations of Galactic Supernova Remnants
• Massive runaways and walkaway stars
• The origin of runaway stars
• Pulsar Parallaxes at 5 GHz with the Very Long Baseline Array
• Local Stellar Kinematics from RAVE Data: I. Local Standard of Rest
• Lithium Abundances of the Local Thin Disk Stars
• Binaries Like to be Twins: Implications for Doubly Degenerate Binaries, the Supernova Ia Rate and Other Interacting Binaries
• On the Expansion Rate, Age, and Distance of the Supernova Remnant G266.2-1.2 (Vela Jr.)
• Maximum speed of hypervelocity stars ejected from binaries
• Identifying birth places of young isolated neutron stars
• Radio Spectrum and Distance of the SNR HB9
• HD 271791: An Extreme Supernova Runaway B Star Escaping from the Galaxy
• Discovery of an OB Runaway Star Inside SNR S147
• The origin of RXJ1856.5-3754 and RXJ0720.4-3125 -- updated using new parallax measurements
• A nearby recent supernova that ejected the runaway star zeta Oph, the pulsar PSRB1706-16, and 60-Fe found on Earth
• Machine Learning Regression of stellar effective temperatures in the second $Gaia$ Data Release
• Asymmetric supernova remnants generated by Galactic, massive runaway stars
• WIYN/Hydra Detection of Lithium Depletion in F Stars of the Young Open Cluster M35 and Implications for the Development of the Lithium Gap
• Modeling of the Vela complex including the Vela supernova remnant, the binary system gamma2 Velorum, and the Gum nebula
• A high-resolution radio survey of the Vela supernova remnant
• A high resolution HI study towards the supernova remnant Puppis A and its environments
• Li Evolution and the Open Cluster NGC 6819: A Correlation Between Li Depletion and Spindown in Dwarfs More Massive Than the F-Dwarf Li-Dip
• The Distance and the near-IR extinction of the Monoceros Supernova Remnant
• Three dimensional dust mapping of 12 supernovae remnants in the Galactic anticentre
• Wind nebulae and supernova remnants of very massive stars
• STK: A new CCD camera at the University Observatory Jena
• Binary companions of nearby supernova remnants found with Gaia
• The quick and the dead: Finding the surviving binary companions of Galactic supernovae with Gaia
• The Origin of the Young Pulsar PSR J0826+2637 and Its Possible Former Companion HIP 13962
• The Radial and Rotational Velocity of $\zeta$ Ophiuchi

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• Searching for ejected supernova companions in the era of precise proper motion and radial velocity measurements
• The Progenitor of the S147 Supernova Remnant