Hostname: page-component-cd9895bd7-mkpzs Total loading time: 0 Render date: 2024-12-23T12:04:54.196Z Has data issue: false hasContentIssue false
  • English
  • Français

Observational constraints on disk photoevaporation by the central star

Published online by Cambridge University Press:  01 May 2007

Gregory J. Herczeg
Gregory J. Herczeg*
Affiliation:
Caltech MC105-24, 1200 E. California Blvd., Pasadena, CA 9125
Rights & Permissions [Opens in a new window]

Abstract

Core share and HTML view are not available for this content. However, as you have access to this content, a full PDF is available via the ‘Save PDF’ action button.

We apply results from FUV and X-ray spectroscopy to evaluate the role of photoevaporation in dispersing the disk around TW Hya. Accretion produces bright EUV emission that may be smothered by the accretion column. Solar-like magnetic activity produces fewer ionizing photons, which may be absorbed by an accretion-powered neutral wind. We estimate a photoevaporation rate of ∼ 5 × 10−11M⊙ yr−1 for the disk around TW Hya. These models can be tested by detecting gas in the ionized disk surface, including emission in the [Ne II] 12.8μm line. Photoevaporation is likely a minor process in disk dispersal during the accretion phase, but could remove ∼ 1 MJ of remnant gas around a solar-mass star after accretion ceases.

Keywords

Stars: planetary systems: protoplanetary disksstars: pre–main-sequenceaccretionstars: coronae
Type
Contributed Papers
Information
Proceedings of the International Astronomical Union , Volume 3 , Symposium S243: Star-Disk Interaction in Young Stars , May 2007 , pp. 147 - 154
Copyright
Copyright © International Astronomical Union 2007

References

Alexander, R.D., Clarke, C.J., & Pringle, J.E. 2004, MNRAS, 354, 71Google Scholar
Alexander, R.D, Clarke, C.J., Pringle, J.E. 2005, MNRAS, 358, 283Google Scholar
Alexander, R.D, Clarke, C.J., Pringle, J.E. 2006a, MNRAS, 369, 216Google Scholar
Alexander, R.D, Clarke, C.J., Pringle, J.E. 2006b, MNRAS, 369, 229Google Scholar
Alencar, S.H.P., & Batalha, C. 2002, ApJ, 571, 378Google Scholar
Ardila, D.R., Basri, G., Walter, F.M., Valenti, J.A., & Johns-Krull, C.M. 2002, ApJ, 567, 1013Google Scholar
Ayres, T.R. 1997, JGR, 102, 1641Google Scholar
Calvet, N., & Gullbring, E. 1998, ApJ, 509, 802Google Scholar
Calvet, N., D'Alessio, P., Hartmann, L. et al. , 2002, ApJ, 568, 1008CrossRefGoogle Scholar
Calvet, N., Muzerolle, J., Briceno, C., et al. 2004, AJ, 128, 1294Google Scholar
D'Antona, F., Mazzitelli, I. 1994, ApJS, 90, 467Google Scholar
del Zanna, G., Landini, M., Mason, H.E. 2002, A&A, 385, 968Google Scholar
Dere, K.P., et al. 1997, A&AS, 125, 149Google Scholar
Drake, J.J. 2005, Proceedings of 13th Cool Stars Workshop, eds. Favata, F., Hussein, G., & Battrick, B.. 519Google Scholar
Dullemond, C.P., Hollenbach, D., Kamp, I., D'Alessio, P. 2007, proceedings of P&PV, eds. Reipurth, B., Jewitt, D., and Keil, K., 951, 555Google Scholar
Dullemond, C.P., & Dominik, C. 2005, A&A, 434, 971Google Scholar
Eisner, J.A., Chiang, E.I., & Hillenbrand, L.A. 2006, ApJ, 637, L133Google Scholar
Gahm, G.F. 1980, ApJ, 242, L163CrossRefGoogle Scholar
Gizis, J.E., Shipman, H.L., Harvin, J.A. 2005, ApJ, 630, L89Google Scholar
Glassgold, A.E., Najita, J.R., & Igea, J. 2007, ApJ, 656, 515Google Scholar
Hartigan, P., Edwards, S., Ghandour, L. 1995, ApJ, 452, 736CrossRefGoogle Scholar
Herczeg, G. J., Linsky, J. L., Valenti, J.A., Johns-Krull, C.M. 2002, ApJ, 572, 310Google Scholar
Herczeg, G.J., et al. 2004, ApJ, 607, 369Google Scholar
Hollenbach, D., Johnstone, D., Lizano, S., & Shu, F. 1994, ApJ, 428, 654Google Scholar
Hughes, A.M., et al. 2007, ApJ, accepted. astro-ph:0704.2422Google Scholar
Johns-Krull, C.M., Valenti, J.A., Linksy, J.L. 2000, ApJ, 539, 815Google Scholar
Johns-Krull, C.M., Herczeg, G.J. 2007, ApJ, 655, 345CrossRefGoogle Scholar
Kastner, J.H., Huenemoerder, D.P., Schulz, N.S., & Weintraub, D.A. 1999, ApJ, 525, 837Google Scholar
Kastner, J. H., Huenemoerder, D. P., Schulz, N. S., et al. 2002, ApJ, 567, 434CrossRefGoogle Scholar
Lahuis, F., van Dischoeck, E.F., Blake, G.A., et al. 2007, ApJ, accepted. astro-ph/07042305Google Scholar
Lamzin, S.A. 2006, AstL, 32, L176Google Scholar
Muzerolle, J., Luhman, K.L., Briceno, C., Hartmann, L., & Calvet, N. 2005, ApJ, 620, L107Google Scholar
Najita, J., Carr, J.S., Glassgold, A.E., & Valenti, J.A. 2007, PPVGoogle Scholar
Pascucci, I., et al. 2006, ApJ, 651, 1177Google Scholar
Pascucci, I., et al. 2007, ApJ, 663, 383CrossRefGoogle Scholar
Preibisch, T., et al. 2005, ApJS, 160, 582CrossRefGoogle Scholar
Roberge, A., Weinberger, A.J., & Malumuth, E.M. 2005, ApJ, 622, 1171Google Scholar
Robrade, J., Schmitt, J.H.M.M. 2006, A&A, 449, 737Google Scholar
Stelzer, B., Schmitt, J.H.H.M. 2004, A&A, 418, 687Google Scholar
Walter, F.M. & Kuhi, L.V. 1981, ApJ, 250, 254Google Scholar
Valenti, J.A., Basri, G., & Johns, C.M. 1993, ApJ, 106, 2024Google Scholar
Yang, H., Johns-Krull, C.M., Valenti, J.A. 2007, AJ, 133, 73Google Scholar