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Title: GASEOUS MATERIAL ORBITING THE POLLUTED, DUSTY WHITE DWARF HE 1349-2305

Abstract

We present new spectroscopic observations of the polluted, dusty, helium-dominated atmosphere white dwarf star HE 1349-2305. Optical spectroscopy reveals weak Ca II 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. HE 1349-2305 is the first gas disk-hosting white dwarf star identified among previously known polluted white dwarfs. Further characterization of the parent body polluting this star will require ultraviolet spectroscopy.

Authors:
;  [1];  [2];  [3];  [4]; ;  [5];  [6]
  1. Center for Astrophysics and Space Sciences, University of California, San Diego, CA 92093-0424 (United States)
  2. Departement de Physique, Universite de Montreal, Montreal, QC H3C 3J7 (Canada)
  3. Department of Physics and Astronomy, University of Leicester, Leicester LE1 7RH (United Kingdom)
  4. Massachusetts Institute of Technology, Kavli Institute for Astrophysics and Space Research, Building 37, Room 664B, 77 Massachusetts Avenue, Cambridge, MA 02139 (United States)
  5. Department of Physics, University of Warwick, Coventry CV4 7AL (United Kingdom)
  6. Institut fuer Theoretische Physik und Astrophysik, University of Kiel, 24098 Kiel (Germany)
Publication Date:
OSTI Identifier:
22047823
Resource Type:
Journal Article
Journal Name:
Astrophysical Journal Letters
Additional Journal Information:
Journal Volume: 751; Journal Issue: 1; Other Information: Country of input: International Atomic Energy Agency (IAEA); Journal ID: ISSN 2041-8205
Country of Publication:
United States
Language:
English
Subject:
79 ASTROPHYSICS, COSMOLOGY AND ASTRONOMY; ABSORPTION SPECTROSCOPY; ASTROPHYSICS; CALCIUM IONS; ELEMENT ABUNDANCE; EMISSION SPECTROSCOPY; HELIUM; IRON; MAGNESIUM; ORBITS; OXYGEN; PLANETS; SILICON; STAR ACCRETION; STELLAR ATMOSPHERES; TRIPLETS; ULTRAVIOLET RADIATION; WHITE DWARF STARS

Citation Formats

Melis, Carl, Burgasser, Adam J, Dufour, P, Farihi, J, Bochanski, J, Parsons, S G, Gaensicke, B T, Koester, D, and Swift, Brandon J., E-mail: cmelis@ucsd.edu. GASEOUS MATERIAL ORBITING THE POLLUTED, DUSTY WHITE DWARF HE 1349-2305. United States: N. p., 2012. Web. doi:10.1088/2041-8205/751/1/L4.
Melis, Carl, Burgasser, Adam J, Dufour, P, Farihi, J, Bochanski, J, Parsons, S G, Gaensicke, B T, Koester, D, & Swift, Brandon J., E-mail: cmelis@ucsd.edu. GASEOUS MATERIAL ORBITING THE POLLUTED, DUSTY WHITE DWARF HE 1349-2305. United States. https://doi.org/10.1088/2041-8205/751/1/L4
Melis, Carl, Burgasser, Adam J, Dufour, P, Farihi, J, Bochanski, J, Parsons, S G, Gaensicke, B T, Koester, D, and Swift, Brandon J., E-mail: cmelis@ucsd.edu. 2012. "GASEOUS MATERIAL ORBITING THE POLLUTED, DUSTY WHITE DWARF HE 1349-2305". United States. https://doi.org/10.1088/2041-8205/751/1/L4.
@article{osti_22047823,
title = {GASEOUS MATERIAL ORBITING THE POLLUTED, DUSTY WHITE DWARF HE 1349-2305},
author = {Melis, Carl and Burgasser, Adam J and Dufour, P and Farihi, J and Bochanski, J and Parsons, S G and Gaensicke, B T and Koester, D and Swift, Brandon J., E-mail: cmelis@ucsd.edu},
abstractNote = {We present new spectroscopic observations of the polluted, dusty, helium-dominated atmosphere white dwarf star HE 1349-2305. Optical spectroscopy reveals weak Ca II 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. HE 1349-2305 is the first gas disk-hosting white dwarf star identified among previously known polluted white dwarfs. Further characterization of the parent body polluting this star will require ultraviolet spectroscopy.},
doi = {10.1088/2041-8205/751/1/L4},
url = {https://www.osti.gov/biblio/22047823}, journal = {Astrophysical Journal Letters},
issn = {2041-8205},
number = 1,
volume = 751,
place = {United States},
year = {Sun May 20 00:00:00 EDT 2012},
month = {Sun May 20 00:00:00 EDT 2012}
}