Search for progenitors of supnernovae type Ia with SPY

Abstract

We have started a large survey for double degenerate (DD) binaries as potential progenitors of type Ia supernovae with the UVES spectrograph at the ESO VLT (ESO SN Ia Progenitor surveY - SPY). About 400 white dwarfs were checked for radial velocity variations during the first 15 months of this project, twice the number of white dwarfs investigated during the last 20 years. We give an overview of the SPY project and present first results Fifty four new DDs have been discovered, seven of them double lined (only 18 and 6 objects of these groups were known before, respectively). The final sample is expected to contain 150 to 200 DDs. Eight new pre-cataclysmic binaries were also detected. SPY is the first DD survey which encompasses also non-DA white dwarfs. SPY produces an immense, unique sample of very high resolution white dwarf spectra, which provides a lot of spin-off opportunities. We describe our projects to exploit the SPY sample for the determination of basic parameters, kinematics, and rotational velocities of white dwarfs. A catalogue with a first subset of our white dwarf data has already been published by Koester et al. 2001.

8 pages, 10 figures

References in corpus (10)

• Observational Evidence from Supernovae for an Accelerating Universe and a Cosmological Constant
• Population synthesis for double white dwarfs I.Close detached systems
• KPD1930+2752 - a candidate Type Ia supernova progenitor
• Close Binary White Dwarf Systems: Numerous New Detections and Their Interpretation
• The fraction of double degenerates among DA white dwarfs
• The stellar content of the Hamburg/ESO survey. I. Automated selection of DA white dwarfs
• Radial velocity measurements of white dwarfs
• Binaries discovered by the SPY project I. HE 1047-0436: a subdwarf B + white dwarf system
• Detached white-dwarf close-binary stars -- CV's extended family
• Is KPD 1930+2752 a good SN Ia progenitor?

Cited by in corpus (78)

• The Evolution of Compact Binary Star Systems
• The Formation Rate, Mass and Luminosity Functions of DA White Dwarfs from the Palomar Green Survey
• The frequency of planetary debris around young white dwarfs
• Accelerating Compact Object Mergers in Triple Systems with the Kozai Resonance: A Mechanism for "Prompt" Type Ia Supernovae, Gamma-Ray Bursts, and Other Exotica
• Comprehensive Photometric Histories of All Known Galactic Recurrent Novae
• Reconstructing the evolution of white dwarf binaries: further evidence for an alternative algorithm for the outcome of the common-envelope phase in close binaries
• Spectropolarimetric Survey of Hydrogen-rich White Dwarf Stars
• The True Incidence of Magnetism among Field White Dwarfs
• Predicting the LISA white dwarf binary population in the Milky Way with cosmological simulations
• High-resolution UVES/VLT spectra of white dwarfs observed for the ESO SN Ia Progenitor Survey. III. DA white dwarfs
• Survival of a brown dwarf after engulfment by a red giant star
• Type Ia Supernova Explosions in Binary Systems: A Review
• The 100 pc White Dwarf Sample in the SDSS Footprint
• Hot subdwarfs from the ESO Supernova Ia Progenitor Survey: II. Atmospheric parameters of subdwarf O stars
• 3D kinematics of white dwarfs from the SPY project II
• Hot subdwarfs from the ESO Supernova Ia Progenitor Survey - I. Atmospheric parameters and cool companions of sdB stars
• Hot subdwarf binaries from the MUCHFUSS project - Analysis of 12 new systems and a study of the short-period binary population
• The Evolution of Compact Binary Star Systems
• Radial velocity measurements of Subdwarf B stars
• A Gravitational Redshift Determination of the Mean Mass of White Dwarfs. DA Stars
• The Future is Now: the Formation of Single Low Mass White Dwarfs in the Solar Neighborhood
• Binaries discovered by the SPY project. IV. Five single-lined DA double white dwarfs
• Post-common envelope binaries from SDSS-X: The origin of low-mass white dwarfs
• The separation distribution and merger rate of double white dwarfs: improved constraints
• The Age of the Milky Way Inner Halo
• Observationally driven Galactic double white dwarf population for LISA
• 3D kinematics of white dwarfs from the SPY project
• The ESO supernovae type Ia progenitor survey (SPY)
• Rotation velocities of white dwarfs determined from the CaII K line
• The shortest period sdB plus white dwarf binary CD-30 11223 (GALEX J1411-3053)
• The Galactic Gravitational wave foreground
• High resolution optical spectroscopy of Praesepe white dwarfs
• Impact of Type Ia Supernova Ejecta on a Helium-star Binary Companion
• Discovery of extremely lead-rich subdwarfs: does heavy metal signal the formation of subdwarf B stars?
• The White Dwarf Binary Pathways Survey I: A sample of FGK stars with white dwarf companions
• Hot subdwarf stars in close-up view - II. Rotational properties of single and wide binary subdwarf B stars
• Gaia photometry for white dwarfs
• Dynamics of Quadruple Systems Composed of Two Binaries: Stars, White Dwarfs, and Implications for Ia Supernovae
• Where are the double-degenerate progenitors of type Ia supernovae?
• Evolutionary sequences for hydrogen-deficient white dwarfs
• Population synthesis of Galactic subdwarf B stars
• New hot subdwarf stars identified in Gaia DR2 with LAMOST DR5 spectra -- II
• The Discovery of a Companion to the Lowest Mass White Dwarf
• Laboratory Measurements of White Dwarf Photospheric Spectral Lines: H$\beta$
• The binary fraction, separation distribution, and merger rate of white dwarfs from SPY
• Using large spectroscopic surveys to test the double degenerate model for Type Ia supernovae
• The galactic population of white dwarfs
• Stellar laboratories: new Ge V and Ge VI oscillator strengths and their validation in the hot white dwarf RE 0503-289
• Discovery of Photospheric Calcium Line Strength Variations in the DAZd White Dwarf G29-38
• Companion stars of Type Ia supernovae and single low-mass white dwarfs
• The fastest stars in the Galaxy
• Stellar laboratories. VII. New Kr IV - VII oscillator strengths and an improved spectral analysis of the hot, hydrogen-deficient DO-type white dwarf RE0503-289
• SALT HRS discovery of a long period double-degenerate binary in the planetary nebula NGC 1360
• Discovery of a widely separated UCD-WD binary
• A stellar prominence in the white dwarf/red dwarf binary QS Vir: evidence for a detached system
• A Gravitational Redshift Determination of the Mean Mass of White Dwarfs. DBA and DB Stars
• An in-depth reanalysis of the alleged type Ia supernova progenitor Henize 2-428
• Two new Double-lined Spectroscopic Binary White Dwarfs
• Spectroscopic analysis of sdB stars from the ESO Supernova Ia Progenitor Survey
• Masses of the Hyades white dwarfs: A gravitational redshift measurement
• A New Merging Double Degenerate Binary in the Solar Neighborhood
• The Unseen Population of F to K-type Companions to Hot Subdwarf Stars
• A model for the population of helium stars in the Galaxy I. Low-mass stars
• Limits on a population of collisional-triples as progenitors of Type-Ia supernovae
• The Way To a Double Degenerate: $\sim 15-20$ per cent of $1M_{\odot }\le M\le 8M_{\odot }$ Stars have a $M>1M_{\odot }$ Companion
• Ultraviolet studies of interacting binaries
• A Spitzer Search for Substellar Companions to Low Mass White Dwarfs
• Complete spectral energy distribution of the hot, helium-rich white dwarf RX J0503.9-2854
• An extremely hot white dwarf with a rapidly rotating K-type subgiant companion: UCAC2 46706450
• NLTE spectroscopic analysis of the ${}^3$He anomaly in subluminous B-type stars
• Atmospheric Temperature Inversions and He I 5876 Core Profile Structure in White Dwarfs
• Magnetic White Dwarfs: Observations, Theory, and Future Prospects
• EC 11481-2303 - A Peculiar Subdwarf OB Star Revisited
• Testing the mass-radius relation of white dwarfs in common proper motion pairs I.Hydrogen-dominated atmospheres
• White Dwarf Variability with gPhoton: Pulsators
• Comparing population synthesis models of compact double white dwarfs to electromagnetic observations
• Merged white dwarfs and nucleosynthesis
• Two hot pre-white dwarfs inside the red-giant-branch planetary nebula Pa 13 -- Double core evolution or common envelope-induced rejuvenation?