Cool white dwarf companions to four millisecond pulsars

Abstract

We report on photometric and spectroscopic observations of white dwarf companions to four binary radio millisecond pulsars, leading to the discovery of companions to PSRs J0614-3329, J1231-1411 and J2017+0603. We place limits on the brightness of the companion to PSR J0613-0200. Optical spectroscopy of the companion to PSR J0614-3329 identifies it as a DA type white dwarf with a temperature of Teff=6460+-80 K, a surface gravity log g=7.0+-0.2 cgs and a mass of Mwd=0.24+-0.04 Msun. We find that the distance to PSR J0614-3329 is smaller than previously estimated, removing the need for the pulsar to have an unrealistically high gamma-ray efficiency. Comparing the photometry with predictions from white dwarf cooling models allows us to estimate temperatures and cooling ages of the companions to PSRs J0613-0200, J1231-1411 and J2017+0603. We find that the white dwarfs in these systems are cool Teff<4000 K and old >5 Gyr. Thin Hydrogen envelopes are required for these white dwarfs to cool to the observed temperatures, and we suggest that besides Hydrogen shell flashes, irradiation driven mass loss by the pulsar may have been important.

arXiv comment8 pages, 5 figures, accepted for publication in MNRAS

References in corpus (54)

• Maps of Dust IR Emission for Use in Estimation of Reddening and CMBR Foregrounds
• The ATNF Pulsar Catalogue
• The USNO-B Catalog
• The u'g'r'i'z' Standard Star Network
• The ATNF Pulsar Catalogue
• A Radio Pulsar/X-ray Binary Link
• Swings between rotation and accretion power in a millisecond binary pulsar
• An Improved Spectroscopic Analysis of DA White Dwarfs from the Sloan Digital Sky Survey Data Release 4
• A three-dimensional Galactic extinction model
• A Comprehensive Spectroscopic Analysis of DB White Dwarfs
• The High Time Resolution Universe Pulsar Survey I: System configuration and initial discoveries
• Found: The missing blue opacity in atmosphere models of cool hydrogen white dwarfs
• New evolutionary sequences for extremely low mass white dwarfs: Homogeneous mass and age determinations, and asteroseismic prospects
• Arecibo Pulsar Survey Using ALFA. I. Survey Strategy and First Discoveries
• A state change in the low-mass X-ray binary XSS J12270-4859
• Theoretical isochrones in several photometric systems II. The Sloan Digital Sky Survey ugriz system
• Know Your Neighborhood: A Detailed Model Atmosphere Analysis of Nearby White Dwarfs
• The NANOGrav Nine-year Data Set: Observations, Arrival Time Measurements, and Analysis of 37 Millisecond Pulsars
• Formation of black widows and redbacks -- two distinct populations of eclipsing binary millisecond pulsars
• Three Millisecond Pulsars in FERMI LAT Unassociated Bright Sources
• The Galactic Population of Low- and Intermediate-Mass X-ray Binaries
• The masses of the millisecond pulsar J1012+5307 and its white-dwarf companion
• Discovery of the Optical Counterparts to Four Energetic Fermi Millisecond Pulsars
• The relativistic pulsar-white dwarf binary PSR J1738+0333 I. Mass determination and evolutionary history
• LMXB and IMXB Evolution: I. The Binary Radio Pulsar PSR J1614-2230
• Surrounded by Spiders! New Black Widows and Redbacks in the Galactic Field
• The Northern High Time Resolution Universe Pulsar Survey I: Setup and initial discoveries
• The Green Bank Telescope 350 MHz Drift-scan Survey I: Survey Observations and the Discovery of 13 Pulsars
• A parallax distance and mass estimate for the transitional millisecond pulsar system J1023+0038
• Is FIRST J102347.6+003841 Really a Cataclysmic Binary?
• The masses of PSR J1911-5958A and its white dwarf companion
• Constraints on the Emission Geometries and Spin Evolution of Gamma-ray Millisecond Pulsars
• The timescale of low-mass proto-helium white dwarf evolution
• Understanding the evolution of close binary systems with radio pulsars
• Radio Searches of Fermi LAT Sources and Blind Search Pulsars: The Fermi Pulsar Search Consortium
• The spectrum of the recycled PSR J0437-4715 and its white dwarf companion
• A Metal-Rich Low-Gravity Companion to a Massive Millisecond Pulsar
• Discovery of two millisecond pulsars in Fermi sources with the Nancay Radio Telescope
• PSR J1909-3744, a Binary Millisecond Pulsar with a Very Small Duty Cycle
• A Detailed Model Atmosphere Analysis of Cool White Dwarfs in the Sloan Digital Sky Survey
• Unveiling the redback nature of the low-mass X-ray binary XSSJ1227.0-4859 through optical observations
• An accurate mass and radius measurement for an ultracool white dwarf
• Stellar Forensics I: Cooling Curves
• Optical Counterparts of Two Fermi Millisecond Pulsars: PSR J1301+0833 and PSR J1628-3205
• Improved synthetic spectra of helium-core white dwarf stars
• Temperature and cooling age of the white dwarf companion of PSR J0218+4232
• The GBT350 Survey of the Northern Galactic Plane for Radio Pulsars and Transients
• Lutz-Kelker bias in pulsar parallax measurements
• The Quasi-Roche lobe overflow state in the evolution of Close Binary Systems containing a radio pulsar
• Lyman-alpha wing absorption in cool white dwarf stars
• The ultra-cool white dwarf companion of PSR J0751+1807
• An optimal extraction of spatially blended spectra
• Helium white dwarf in PSR J0751+1807; too cool, in PSR J1012+5307; too hot?
• Gemini optical observations of binary millisecond-pulsars

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• The NANOGrav Nine-year Data Set: Mass and Geometric Measurements of Binary Millisecond Pulsars
• The second data release from the European Pulsar Timing Array I. The dataset and timing analysis
• Models of low-mass helium white dwarfs including gravitational settling, thermal and chemical diffusion, and rotational mixing
• The Third Fermi Large Area Telescope Catalog of Gamma-ray Pulsars
• Searches for Gravitational Waves from Known Pulsars at Two Harmonics in 2015-2017 LIGO Data
• A NICER View of PSR J1231$-$1411: A Complex Case
• Searches for Gravitational Waves from Known Pulsars at Two Harmonics in the Second and Third LIGO-Virgo Observing Runs
• Last Electroweak WIMP Standing: Pseudo-Dirac Higgsino Status and Compact Stars as Future Probes
• Gaia Data Release 2 Catalogue of Extremely-low Mass White Dwarf Candidates
• A NICER view of the 1.4 solar-mass edge-on pulsar PSR J0614-3329
• The ultracool helium-atmosphere white dwarf companion of PSR J0740+6620?
• Search for continuous gravitational waves from known pulsars in the first part of the fourth LIGO-Virgo-KAGRA observing run
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• Detection of the PSR J1741+1351 white dwarf companion with the Gran Telescopio Canarias
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