Hyper-runaway and hypervelocity white dwarf candidates in \textit{Gaia} Data Release 3: possible remnants from Ia/Iax supernova explosions or dynamical encounters

Abstract

Type Ia and other peculiar supernovae (SNe) are thought to originate from the thermonuclear explosions of white dwarfs (WDs). Some of the proposed channels involve the ejection of a partly exploded WD (e.g. Iax SN remnant) or the companion of an exploding WD at extremely high velocities ($>400$ km\,s${}^{-1}$). Characterisation of such hyper-runaway/hypervelocity (HVS) WDs might therefore shed light on the physics and origins of SNe. Here we analyse the \textit{Gaia} DR3 data to search for HVS WDs candidates, and peculiar sub-main-sequence (sub-MS) objects. We retrieve the previously identified HVSs, and find 46 new HVS candidates. Among these we identify two new unbound WDs and two new unbound sub-MS candidates. The remaining stars are hyper-runaway WDs and hyper-runaway sub-MS stars. The numbers and properties of the HVS WD and sub-MS candidates suggest that extreme velocity ejections ($>1000$ km\,s${}^{-1}$) can accompany at most a small fraction of type Ia SNe, disfavouring a significant contribution of the D6-scenario to the origin of Ia SNe. The rate of HVS ejections following the hybrid WD reverse-detonation channel could be consistent with the identified HVSs. The numbers of lower-velocity HVS WDs could be consistent with type Iax SNe origin and/or contribution from dynamical encounters. We also searched for HVS WDs related to known SN remnants, but identified only one such candidate.

arXiv commentSubmitted to the MNRAS

References in corpus (83)

• The Gaia mission
• MESA Isochrones and Stellar Tracks (MIST). I: Solar-Scaled Models
• The SIMBAD astronomical database
• Local Kinematics and the Local Standard of Rest
• Trigonometric Parallaxes of High Mass Star Forming Regions: the Structure and Kinematics of the Milky Way
• Gaia Early Data Release 3: Parallax bias versus magnitude, colour, and position
• Nearby Supernova Rates from the Lick Observatory Supernova Search. II. The Observed Luminosity Functions and Fractions of Supernovae in a Complete Sample
• The Velocity Distribution of Isolated Radio Pulsars
• The Parkes multibeam pulsar survey: VI. Discovery and timing of 142 pulsars and a Galactic population analysis
• Estimating distances from parallaxes
• Double-detonation sub-Chandrasekhar supernovae: can minimum helium shell masses detonate the core?
• A Catalog of Spectroscopically Confirmed White Dwarfs from the Sloan Digital Sky Survey Data Release 4
• A $Gaia$ Data Release 2 catalogue of white dwarfs and a comparison with SDSS
• Gaia Early Data Release 3 -- Catalogue validation
• Faint Thermonuclear Supernovae from AM Canum Venaticorum Binaries
• A Catalog of Northern Stars With Annual Proper Motions Larger Than 0.15 Seconds of Arc (LSPM catalog - North)
• Type Iax Supernovae: A New Class of Stellar Explosion
• Discovery of an Unbound Hyper-Velocity Star in the Milky Way Halo
• 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
• A faint type of supernova from a white dwarf with a helium-rich companion
• A catalogue of white dwarfs in Gaia EDR3
• On the Spectral Evolution of Hot White Dwarf Stars. I. A Detailed Model-Atmosphere Analysis of Hot White Dwarfs from SDSS DR12
• Three-dimensional mapping of the local interstellar medium with composite data
• New white dwarf stars in the Sloan Digital Sky Survey Data Release 10
• Massive runaways and walkaway stars
• A revised catalogue of 294 Galactic supernova remnants
• Runaway stars as progenitors of supernovae and gamma-ray bursts
• Sub-Chandrasekhar-mass white dwarf detonations revisited
• Three Hypervelocity White Dwarfs in Gaia DR2: Evidence for Dynamically Driven Double-Degenerate Double-Detonation Type Ia Supernovae
• Surface Detonations in Double Degenerate Binary Systems Triggered by Accretion Stream Instabilities
• Investigating stellar-mass black hole kicks
• 3D deflagration simulations leaving bound remnants: a model for 2002cx-like Type Ia supernovae
• On Pulsar Distance Measurements and their Uncertainties
• The observed velocity distribution of young pulsars
• HE 0437-5439 -- an unbound hyper-velocity main-sequence B-type star
• US 708 - An unbound hyper-velocity subluminous O star
• Failed-Detonation Supernovae: Sub-Luminous Low-Velocity Ia Supernovae and Their Kicked Remnant White Dwarfs with Iron-Rich Cores
• VIRAC: The VVV Infrared Astrometric Catalogue
• Measuring the vertical age structure of the Galactic disc using asteroseismology and SAGA
• The properties of dynamically ejected runaway and hyper-runaway stars
• Dynamical ejections of massive stars from young star clusters under diverse initial conditions
• The characteristics of high velocity O and B stars which are ejected from supernovae in binary systems
• Imprints of white dwarf recoil in the separation distribution of Gaia wide binaries
• The fastest unbound star in our Galaxy ejected by a thermonuclear supernova
• The escape speed curve of the Galaxy obtained from Gaia DR2 implies a heavy Milky Way
• An Alternative Origin for Hypervelocity Stars
• The Galactic distribution of X-ray binaries and its implications for compact object formation and natal kicks
• The ELM Survey. V. Merging Massive White Dwarf Binaries
• Gaia DR2 in 6D: Searching for the fastest stars in the Galaxy
• Cool White Dwarfs in the Sloan Digital Sky Survey
• An unusual white dwarf star may be a surviving remnant of a subluminous Type Ia supernova
• Maximum speed of hypervelocity stars ejected from binaries
• Runaway and hypervelocity stars in the Galactic halo: Binary rejuvenation and triple disruption
• The observed velocity distribution of young pulsars II: analysis of complete PSR$\pi$
• Formation and evolution of hybrid He-CO white dwarfs and their properties
• The demographics of neutron star - white dwarf mergers: rates, delay-time distributions and progenitors
• The age of the Milky Way halo stars from the Sloan Digital Sky Survey
• Thermonuclear explosion of a massive hybrid HeCO white-dwarf triggered by a He-detonation on a companion
• Dynamical and evolutionary constraints on the nature and origin of hypervelocity stars
• Partly burnt runaway stellar remnants from peculiar thermonuclear supernovae
• The Century Survey Galactic Halo Project III: A Complete 4300 deg^2 Survey of Blue Horizontal Branch Stars in the Metal-Weak Thick Disk and Inner Halo
• The Age of the Galactic Stellar Halo from Gaia White Dwarfs
• Combined analysis of neutron star natal kicks using proper motions and parallax measurements for radio pulsars and Be X-ray binaries
• The Hyper-MUCHFUSS project: probing the Galactic halo with sdB stars
• Anatomy of the hyper-runaway star LP 40-365 with Gaia
• Core-Collapse Supernovae in Binaries as the Origin of Galactic Hyper-Runaway Stars
• Gaia EDR3 in 6D: Searching for unbound stars in the Galaxy
• Further insight on the hypervelocity white dwarf, LP 40-365 (GD 492): a nearby emissary from a single-degenerate Type Ia supernova
• Masses of White Dwarf Binary Companions to Type Ia Supernovae Measured from Runaway Velocities
• The distance and luminosity probability distributions derived from parallax and flux with their measurement errors with application to the millisecond pulsar PSR J0218+4232
• A Multi-Survey Approach to White Dwarf Discovery
• The Galactic potential and the asymmetric distribution of hypervelocity stars
• Constraints on the Galactic Centre environment from Gaia hypervelocity stars
• Spectroscopic twin to the hypervelocity sdO star US 708 and three fast sdB stars from the Hyper-MUCHFUSS project
• Kinematics in galactic tidal tails - A source for Hypervelocity stars?
• An ancient double degenerate merger in the Milky Way halo
• Constraints on the Galactic Centre environment from Gaia hypervelocity stars II: The evolved population
• Searching for a Hypervelocity White Dwarf Companion: A Proper Motion Survey of SN 1006
• 8.9-hr Rotation in the Partly Burnt Runaway Stellar Remnant LP 40-365 (GD 492)
• A hyper-runaway white dwarf in Gaia DR2 as a Type Iax supernova primary remnant candidate
• Properties and applications of a predicted population of runaway He-sdO/B stars ejected from single degenerate He-donor SNe
• Constraints on the origins of hypervelocity stars: velocity distribution, mergers and star-formation history
• SDSS J124043.01+671034.68: The partially burned remnant of a low-mass white dwarf that underwent thermonuclear ignition?

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• Type Ia Supernova Explosions in Binary Systems: A Review
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• Runaway and Hypervelocity Stars from Compact Object Encounters in Globular Clusters
• Constraints on the Galactic Centre environment from \textit{Gaia} hypervelocity stars III: Insights on a possible companion to Sgr A*
• Hypervelocity star candidates from Gaia DR2 and DR3 proper motions and parallaxes
• A spectroscopic and kinematic survey of fast hot subdwarfs
• The runaway velocity of the white dwarf companion in the double detonation scenario of supernovae
• The origin of hypervelocity white dwarfs in the merger-disruption of He-CO white dwarfs
• Natal kicks of compact objects
• The core degenerate scenario for the type Ia supernova SN 2020eyj
• A systematic method to identify runaways from star clusters produced from single-binary interactions: A case study of M67