Gaseous Material Orbiting the Polluted, Dusty White Dwarf HE1349-2305

Abstract

We present new spectroscopic observations of the polluted, dusty, helium-dominated atmosphere white dwarf star HE1349-2305. Optical spectroscopy reveals weak CaII infrared triplet emission indicating that metallic gas debris orbits and is accreted by the white dwarf. Atmospheric abundances are measured for magnesium and silicon while upper limits for iron and oxygen are derived from the available optical spectroscopy. HE1349-2305 is the first gas disk-hosting white dwarf star identified amongst previously known polluted white dwarfs. Further characterization of the parent body polluting this star will require ultraviolet spectroscopy.

16 pages, 2 figures, 3 tables. Accepted for publication in ApJ Letters

References in corpus (12)

• A gaseous metal disk around a white dwarf
• The Chemical Composition of an Extrasolar Minor Planet
• Pollution of single white dwarfs by accretion of many small asteroids
• The MagE Spectrograph
• On the Spectral Evolution of Cool, Helium-Atmosphere White Dwarfs: Detailed Spectroscopic and Photometric Analysis of DZ Stars
• Constraints on the Lifetimes of Disks Resulting from Tidally Destroyed Rocky Planetary Bodies
• Detailed compositional analysis of the heavily polluted DBZ white dwarf SDSS J073842.56+183509.06: A window on planet formation?
• SDSSJ104341.53+085558.2: A second white dwarf with a gaseous debris disc
• A Trio of Metal-Rich Dust and Gas Disks Found Orbiting Candidate White Dwarfs with K-Band Excess
• Rocky Extrasolar Planetary Compositions Derived from Externally-Polluted White Dwarfs
• Water Fractions in Extrasolar Planetesimals
• A Spitzer Space Telescope Study of the Debris Disks around four SDSS White Dwarfs

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• Signs of a faint disc population at polluted white dwarfs
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• Serendipitous Discovery of Nine White Dwarfs With Gaseous Debris Disks
• White dwarfs with planetary remnants in the era of Gaia I: six emission line systems
• Another one grinds the dust: Variability of the planetary debris disc at the white dwarf SDSS J104341.53+085558.2
• The dust never settles: collisional production of gas and dust in evolved planetary systems
• Sublimation-induced orbital perturbations of extrasolar active asteroids and comets: application to white dwarf systems
• Evidence for Gas from a Disintegrating Extrasolar Asteroid
• Extrasolar Refractory-Dominated Planetesimals: an Assessment
• Fast and Slow Precession of Gaseous Debris Disks Around Planet-Accreting White Dwarfs
• Do instabilities in high-multiplicity systems explain the existence of close-in white dwarf planets?
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• Binary star influence on post-main-sequence multi-planet stability
• ALMA and Herschel Observations of the Prototype Dusty and Polluted White Dwarf G29-38
• WIRED for EC: New White Dwarfs with $\text{WISE}$ Infrared Excesses and New Classification Schemes from the Edinburgh-Cape Blue Object Survey
• PEWDD: A database of white dwarfs enriched by exo-planetary material
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• Formation of eccentric gas discs from sublimating or partially disrupted asteroids orbiting white dwarfs
• Near-infrared variability in dusty white dwarfs: tracing the accretion of planetary material
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• The critical binary star separation for a planetary system origin of white dwarf pollution
• Spectral analysis of cool white dwarfs accreting from planetary systems: from the UV to the optical
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• Velocity-imaging the rapidly precessing planetary disc around the white dwarf HE 1349-2305 using Doppler tomography
• Near-Infrared Imaging of White Dwarfs with Candidate Debris Disks
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