The Library

Possible signs of water and differentiation in a rocky exoplanetary body

Tools

Farihi, J., Brinkworth, C. S., Gaensicke, B. T., Marsh, T. R., Girven, Jonathan, Hoard, D. W., Klein, B. and Koester, Detlev. (2011) Possible signs of water and differentiation in a rocky exoplanetary body. The Astrophysical Journal, Vol.728 (No.1). article no.8. ISSN 0004-637X

Full text not available from this repository.

Official URL: http://dx.doi.org/10.1088/2041-8205/728/1/L8

Abstract

Spitzer observations reveal the presence of warm debris from a tidally destroyed rocky and possibly icy planetary body orbiting the white dwarf GD 61. Ultraviolet and optical spectroscopy of the metal-contaminated stellar photosphere reveal traces of hydrogen, oxygen, magnesium, silicon, iron, and calcium. The nominal ratios of these elements indicate an excess of oxygen relative to that expected from rock-forming metal oxides, and thus it is possible that water was accreted together with the terrestrial-like debris. Iron is found to be deficient relative to magnesium and silicon, suggesting the material may have originated as the outer layers of a differentiated parent body, as is widely accepted for the Moon.

Item Type:

Journal Article

Subjects:

Q Science > QB Astronomy

Divisions:

Faculty of Science > Physics

Library of Congress Subject Headings (LCSH):

Circumstellar matter, Asteroids, Cosmic abundances, White dwarf stars

Journal or Publication Title:

The Astrophysical Journal

Publisher:

Institute of Physics Publishing, Inc.

ISSN:

0004-637X

Official Date:

10 February 2011

Dates:

Date	Event
10 February 2011	Published

Volume:

Vol.728

Number:

No.1

Page Range:

article no.8

Identification Number:

10.1088/2041-8205/728/1/L8

Status:

Peer Reviewed

Publication Status:

Published

Access rights to Published version:

Restricted or Subscription Access

References:

Basaltic Volcanism Study Project 1981, Basaltic Volcanism on the Terrestrial
Planets (New York: Pergamon)
Brinkworth, C. S., G¨ansicke, B. T., Marsh, T. R., Hoard, D. W., & Tappert, C.
2009, ApJ, 696, 1402
Campins, H., et al. 2010, Nature, 464, 1320
Canup, R. M., & Asphaug, E. 2001, Nature, 412, 708
Debes, J. H., & Sigurdsson, S. 2002, ApJ, 572, 556
Desharnais, S.,Wesemael, F., Chayer, P., Kruk, J.W.,&Saffer, R. A. 2008, ApJ,
672, 540
Dobbie, P. D., et al. 2006, MNRAS, 369, 383
Draine, B. T. 2003, ARA&A, 41, 241
Dufour, P., Bergeron, P., & Fontaine, G. 2005, ApJ, 627, 404
Farihi, J., Barstow, M. A., Redfield, S., Dufour, P.,&Hambly, N. C. 2010a, MNRAS,
404, 2123
Farihi, J., Jura, M., Lee, J. E., & Zuckerman, B. 2010b, ApJ, 714, 1386
Farihi, J., Jura, M., & Zuckerman, B. 2009, ApJ, 694, 805
Farihi, J., Zuckerman, B., & Becklin, E. E. 2005, AJ, 130, 2237
Farihi, J., Zuckerman, B., & Becklin, E. E. 2008, ApJ, 674, 431
Fazio, G. G., et al. 2004, ApJS, 154, 10
Fontaine, G., Brassard, P., & Bergeron, P. 2001, PASP, 113, 409
G¨ansicke, B. T., Koester, D., Girven, J., Marsh, T. R., & Steeghs, D. 2010,
Science, 327, 188
G¨ansicke, B. T., Koester, D., Marsh, T. R., Rebassa-Mansergas, A., & Southworth,
J. 2008, MNRAS, 391, L103
G¨ansicke, B. T., Marsh, T. R., Southworth, J., & Rebassa-Mansergas, A.
2006, Science, 314, 1908
Houck, J. R., et al. 2004, ApJS, 154, 18
Hsieh, H. H., & Jewitt, D. 2006, Science, 312, 561
Hurley, J. R., Pols, O. R., & Tout, C. A. 2000, MNRAS, 315, 543
Jura, M. 2003, ApJ, 584, L91
Jura, M. 2008, AJ, 135, 1785
Jura, M., Farihi, J., & Zuckerman, B. 2007, ApJ, 663, 1285
Jura, M., Farihi, J., & Zuckerman, B. 2009a, AJ, 137, 3191
Jura, M., Muno, M., Farihi, J., & Zuckerman, B. 2009b, ApJ, 699, 1473
Jura, M., & Xu, S. 2010, AJ, 140, 1129
Kalirai, J. S., Hansen, B. M. S., Kelson, D. D., Reitzel, D. B., Rich, R. M., &
Richer, H. B. 2008, ApJ, 676, 594
Klein, B., Jura, M., Koester, D., Zuckerman, B., & Melis, C. 2010, ApJ, 709,
950
Koester, D. 2009, A&A, 498, 517
Koester, D., Napiwotzki, R., Voss, B., Homeier, D., & Reimers, D. 2005, A&A,
439, 317
Koester, D., & Wilken, D. 2006, A&A, 453, 1051
Lisse, C. M., Chen, C. H., Wyatt, M. C., & Morlok, A. 2008, ApJ, 673, 1106
Lodders, K. 2003, ApJ, 591, 1220
Morbidelli, A., Chambers, J., Lunine, J. I., Petit, J. M., Robert, F., Valsecchi,
G. B., & Cyr, K. E. 2000, Meteorit. Planet. Sci., 35, 1309
Patten, B. M., et al. 2006, ApJ, 651, 502
Pelletier, C., Fontaine, G.,Wesemael, F.,Michaud, G., &Wegner, G. 1986, ApJ,
307, 242
Reach, W. T., Kuchner, M. J., von Hippel, T., Burrows, A., Mullally, F., Kilic,
M., & Winget, D. E. 2005, ApJ, 635, L161
Reach, W. T., Lisse, C., von Hippel, T., & Mullally, F. 2009, ApJ, 693, 697
Rivkin, A. S., & Emery, J. P. 2010, Nature, 464, 1322
Sion, E. M., Aannestad, P. A., & Kenyon, S. J. 1988, ApJ, 330, L55
Thomas, P. C., Parker, J. W., McFadden, L. A., Russell, C. T., Stern, S. A.,
Sykes, M. V., & Young, E. F. 2005, Nature, 437, 224
Vogt, S. S., et al. 1994, Proc. SPIE, 2198, 362
vonHippel, T.,Kuchner, M. J.,Kilic, M.,Mullally, F.,&Reach,W. T. 2007, ApJ,
662, 544
Werner, M. W., et al. 2004, ApJS, 154, 1
Williams, K. A., Bolte, M., & Koester, D. 2009, ApJ, 693, 355
Zuckerman, B., Koester, D., Melis, C., Hansen, B.M. S., & Jura, M. 2007, ApJ,
671, 872
Zuckerman, B., Koester, D., Reid, I. N., & H¨unsch, M. 2003, ApJ, 596, 477