A likely candidate of type Ia supernova progenitors: the X-ray pulsating companion of the hot subdwarf HD 49798

Abstract

HD 49798 is a hydrogen depleted subdwarf O6 star and has an X-ray pulsating companion (RX J0648.0-4418). The X-ray pulsating companion is a massive white dwarf. Employing Eggleton's stellar evolution code with the optically thick wind assumption, we find that the hot subdwarf HD 49798 and its X-ray pulsating companion could produce a type Ia supernova (SN Ia) in future evolution. This implies that the binary system is a likely candidate of SN Ia progenitors. We also discussed the possibilities of some other WD + He star systems (e.g. V445 Pup and KPD 1930+2752) for producing SNe Ia.

7 pages, 2 figures, accepted by Res. Astron. Astrophys.

References in corpus (29)

• The type Ia supernova SNLS-03D3bb from a super-Chandrasekhar-mass white dwarf star
• Rates and Delay Times of Type Ia Supernovae
• White Dwarf Mass Distribution in the SDSS
• Improved Distances to Type Ia Supernovae with Two Spectroscopic Subclasses
• Optical and Near-Infrared Observations of the Highly Reddened, Rapidly Expanding Type Ia Supernova 2006X in M100
• An upper limit on the contribution of accreting white dwarfs to the type Ia supernova rate
• On the Progenitors of Type Ia Supernovae
• Variable Sodium Absorption in a Low-Extinction Type Ia Supernova
• The hot subdwarf B + white dwarf binary KPD 1930+2752 - a Supernova Type Ia progenitor candidate
• On type Ia supernovae and the formation of single low-mass white dwarfs
• An ultra-massive fast-spinning white dwarf in a peculiar binary system
• Evolving to Type Ia Supernovae with Short Delay Times
• The progenitors of Type Ia supernovae with long delay times
• The expanding bipolar shell of the helium nova V445 Puppis
• Companion stars of Type Ia supernovae and hypervelocity stars
• A single-degenerate model for the progenitor of the Type Ia supernova 2002ic
• Evidence for short-lived SN Ia progenitors
• On the progenitors of super-Chandrasekhar mass type Ia supernovae
• Helium Nova on a Very Massive White Dwarf -- A Light Curve Model of V445 Puppis (2000) Revised
• A comprehensive progenitor model for SNe Ia
• Evolving to type Ia supernovae with long delay time
• Companion stars of Type Ia supernovae and single low-mass white dwarfs
• Distribution of ${}^{56}$Ni Yields of Type Ia Supernovae and its Implication for Progenitors
• On the empirical evidence for the existence of ultra-massive white dwarfs
• Birthrates and delay times of Type Ia supernovae
• WD+RG systems as the progenitors of Type Ia supernovae
• Companion Stars of Type Ia supernovae with different metallicities
• WD + He star systems as the progenitors of Type Ia supernovae and their surviving companion stars
• Stellar Winds and Mass Loss from Extreme Helium Stars

Cited by in corpus (18)

• Progenitors of type Ia supernovae
• He-accreting carbon-oxygen white dwarfs and type Ia supernovae
• X-ray and optical observations of the unique binary system HD49798/RXJ0648.0-4418
• Super-Eddington wind scenario for the progenitors of type Ia supernovae: Accreting He-rich matter onto white dwarfs
• The single-degenerate model for the progenitors of accretion-induced collapse events
• X-ray emission from the luminous O-type subdwarf HD 49798 and its compact companion
• HD 49798: Its History of Binary Interaction and Future Evolution
• New X-ray observations of the hot subdwarf binary HD49798 / RXJ0648.0-4418
• Off-centre carbon burning in He-accreting carbon-oxygen white dwarfs
• X-rays from Hot Subdwarfs
• Is the X-ray pulsating companion of HD 49798 a possible type Ia supernova progenitor?
• He-shell flashes on the surface of oxygen-neon white dwarfs
• A Study of Magnetized White Dwarf + Helium Star Binary Evolution to Type Ia Supernovae
• Timing the X-ray pulsating companion of the hot-subdwarf HD 49798 with NICER
• On the X-ray pulsar HD 49798: a contracting white dwarf with debris disk?
• Modeling blue stragglers in young clusters
• X-ray emission from hot subdwarfs with compact companions
• The progenitor of a type Ia supernova with a short delay time?