publication . Preprint . Article . 2012

INNER EDGES OF COMPACT DEBRIS DISKS AROUND METAL-RICH WHITE DWARFS

Roman R. Rafikov; José A. Garmilla;
Open Access English
  • Published: 15 Nov 2012
Abstract
A number of metal-rich white dwarfs (WDs) are known to host compact, dense particle disks, which are thought to be responsible for metal pollution of these stars. In many such systems the inner radii of disks inferred from their spectra are so close to the WD that particles directly exposed to starlight must be heated above 1500 K and are expected to be unstable against sublimation. To reconcile this expectation with observations we explore particle sublimation in H-poor debris disks around WDs. We show that because of the high metal vapor pressure the characteristic sublimation temperature in these disks is 300-400 K higher than in their protoplanetary analogue...
Subjects
free text keywords: Astrophysics - Solar and Stellar Astrophysics, Astrophysics - Earth and Planetary Astrophysics, Space and Planetary Science, Astronomy and Astrophysics, Radius, Particle, Astrophysics, Astronomy, Sublimation (phase transition), Stars, Spectral line, Physics, Accretion (meteorology), White dwarf, Protoplanet
Related Organizations
49 references, page 1 of 4

Alcock, C., Fristrom, C. C., & Siegelman, R. 1986, ApJ, 302, 462

Bochkarev, K. V., & Rafikov, R. R. 2011, ApJ, 741, 36

Brewer, L., & Searcy, A. W. 1951, Journal of the American Chemical Society, 73, 5308

Brinkworth, C. S., G¨ansicke, B. T., Girven, J. M., et al. 2012, ApJ, 750, 86

Brinkworth, C. S., G¨ansicke, B. T., Marsh, T. R., Hoard, D. W., & Tappert, C. 2009, ApJ, 696, 1402

Chase, M. W. J., Davies, C. A., Downey, J. R. J., et al. 1985, J. Phys. Chem. Ref. Data, 14, Suppl. No. 1

Chiang, E. I., & Goldreich, P. 1997, ApJ, 490, 368

Cuzzi, J. N., Burns, J. A., Charnoz, S., et al. 2010, Science, 327, 1470

Debes, J. H., & Sigurdsson, S. 2002, ApJ, 572, 556

Dufour, P., Kilic, M., Fontaine, G., et al. 2012, ApJ, 749, 6

Farihi, J. 2011, in American Institute of Physics Conference Series, Vol. 1331, American Institute of Physics Conference Series, ed. S. Schuh, H. Drechsel, & U. Heber, 193-210

Farihi, J., Brinkworth, C. S., G¨ansicke, B. T., et al. 2011, ApJl, 728, L8

Farihi, J., G¨ansicke, B. T., Steele, P. R., et al. 2012, MNRAS, 421, 1635

Farihi, J., Jura, M., Lee, J.-E., & Zuckerman, B. 2010, ApJ, 714, 1386

Farihi, J., Jura, M., & Zuckerman, B. 2009, ApJ, 694, 805

49 references, page 1 of 4
Powered by OpenAIRE Open Research Graph
Any information missing or wrong?Report an Issue
publication . Preprint . Article . 2012

INNER EDGES OF COMPACT DEBRIS DISKS AROUND METAL-RICH WHITE DWARFS

Roman R. Rafikov; José A. Garmilla;