Refereed papers (31)

  1. Classical T Tauri stars: magnetic fields, coronae, and star-disc interactions,
    C. P. Johnstone, M. Jardine, S. G. Gregory, J.-F. Donati and G. A. J. Hussain, 2012, MNRAS, submitted.

  2. Hot gas lines in T Tauri stars,
    D. R. Ardila, G. J. Herczeg, S. G. Gregory, L. Ingleby, K. France, A. Brown, S. Edwards, J. L. Linsky, H. Yang, J. M. Brown, J. A. Valenti, C. M. Johns-Krull, R. D. Alexander, E. Bergin, T. Bethell, N. Calvet, C. Espaillet, A. Herv, L. A. Hillenbrand, G. A. J. Hussain, E. Roueff, E. R. Schindhelm and F. M. Walter, 2012, ApJ, submitted.

  3. Large scale magnetic field and mass accretion at the surface of the young classical T Tauri star MT Ori,
    M. B. Skelly, J.-F. Donati, J. Bouvier, S. G. Gregory, G. A. J. Hussain, K. N. Grankin, M. M. Jardine, F. Menard, C. Dougados and the MaPP collaboration, 2012, MNRAS, submitted.

  4. Can we predict the global magnetic topology of a pre-main sequence star from its position in the Hertzsprung-Russell diagram?
    S. G. Gregory, J.-F. Donati, J. Morin, G. A. J. Hussain, N. Mayne, L. A. Hillenbrand and M. Jardine, 2012, ApJ, 755, 97.
    NASA ADS   astro-ph

  5. Magnetometry of the classical T Tauri star GQ Lup: nonstationary dynamos and spin evolution of young Suns,
    J.-F. Donati, S. G. Gregory, S. H. P. Alencar, G. Hussain, J. Bouvier, C. Dougados, M. M. Jardine, F. Menard, M. M. Romanova, and the MaPP collaboration, 2012, MNRAS, in press [astro-ph/1206.1770].
    NASA ADS   astro-ph

  6. The close T Tauri binary system V4046 Sgr: rotationally modulated X-ray emission from accretion shocks,
    C. Argiroffi, A. Maggio, T. Montmerle, D. P. Huenemoerder, E. Alecian, M. Audard, J. Bouvier, F. Damiani, J.-F. Donati, S. G. Gregory, M. Gudel, G. A. J. Hussain, J. H. Kastner and G. G. Sacco, 2012, ApJ, 752, 100.
    NASA ADS   astro-ph

  7. Mechanical equilibrium of hot, large scale magnetic loops on T Tauri stars,
    A. Aarnio, J. Llama, M. Jardine and S. G. Gregory, 2012, MNRAS, 421, 1797.
    NASA ADS   astro-ph

  8. Magnetically controlled accretion flows on to young stellar objects,
    F. C. Adams and S. G. Gregory, 2012, ApJ, 744, 55.
    NASA ADS   astro-ph

  9. The soft X-ray light curves of partially eclipsed stellar flares,
    C. P. Johnstone, S. G. Gregory, M. M. Jardine and K. V. Getman, 2012, MNRAS, 419, 29.
    NASA ADS   astro-ph

  10. Analytic and numerical models of the 3D multipolar magnetospheres of pre-main sequence stars,
    S. G. Gregory and J.-F. Donati, 2011, peer-reviewed invited conference review for the Proceedings of the 7th Potsdam thinkshop: magnetic fields in stars and exoplanets, Potsdam, August 2011, AN (special conference issue), 332, 1027.
    NASA ADS   astro-ph

  11. nUV excess in slowly accreting T Tauri stars: limits imposed by chromospheric emission,
    L. Ingleby, N. Calvet, E. Bergin, G. Herczeg, A. Brown, R. Alexander, S. Edwards, C. Espaillat, K. France, S. G. Gregory, L. Hillenbrand, E. Roueff, J. Valenti, F. Walter, J. Brown, J. Linsky, M. McClure, D. Ardila, H. Abgrall, T. Bethell, G. Hussain and H. Yang, 2011, ApJ, 743, 105.
    NASA ADS   astro-ph

  12. GSC 07396-00759 = V4046 Sgr C[D]: a wide separation companion to the close T Tauri binary system V4046 Sgr AB,
    J. H. Kastner, G. G. Sacco, R. Montez Jr., D. P. Huenemoerder, H. Shi, E. Alecian, C. Argiroffi, M. Audard, J. Bouvier, F. Damiani, J.-F. Donati, S. G. Gregory, M. Gudel, G. A. J. Hussain, A. Maggio and T. Montmerle, 2011, ApJL, 740, 17.
    NASA ADS   astro-ph

  13. The close classical T Tauri binary V4046 Sgr: complex magnetic fields and distributed mass accretion,
    J.-F. Donati, S. G. Gregory, T. Montemerle, A. Maggio, C. Argiroffi, G. Sacco, G. Hussain, J. Kastner, S. H. P. Alencar, M. Audard, J. Bouvier, F. Damiani, D. Huenemoerder and G. A. Wade, 2011, MNRAS, 417, 1747.
    NASA ADS   astro-ph

  14. The large-scale magnetic field and poleward mass accretion of the classical T Tauri star TW Hya,
    J.-F. Donati, S. G. Gregory, S. H. P. Alencar, J. Bouvier, G. Hussain, M. Skelly, C. Dougados, M. M. Jardine, F. Menard, M. M. Romanova, Y. C. Unruh and the MaPP collaboration, 2011, MNRAS, 417, 472.
    NASA ADS   astro-ph

  15. The far-ultraviolet ``continuum'' in protoplanetary disk systems II: CO fourth positive emission,
    K. France, E. Schindhelm, E. B. Burgh, G. J. Herczeg, G. M. Harper, A. Brown, J. C. Green, J. L. Linsky, H. Yang, H. Abgrall, D. R. Ardila, E. Bergin, T. Bethell, J. M. Brown, N. Calvet, C. Espaillat, S. G. Gregory, L. A. Hillenbrand, G. Hussain, L. Ingleby, C. M. Johns-Krull, E. Roueff, J. A. Valenti and F. M. Walter, 2011, ApJ, 734, 31.
    NASA ADS   astro-ph

  16. Variable X-ray emission from the accretion shock in the classical T Tauri star V2129 Oph,
    C. Argiroffi, E. Flaccomio, J. Bouvier, J.-F. Donati, K. V. Getman, S. G. Gregory, G. A. J. Hussain, M. M. Jardine, M. B. Skelly and F. M. Walter, 2011, Astron. and Astrophys., 530, A1.
    NASA ADS   astro-ph

  17. Equation of the field lines of an axisymmetric multipole with a source surface,
    S. G. Gregory, 2011, American Journal of Physics, 79, 461.
    NASA ADS   astro-ph
    Featured on the cover of the May 2011 issue (vol. 79, issue 5)

  18. Non-stationary dynamo and magnetospheric accretion processes of the classical T Tauri star V2129 Oph,
    J.-F. Donati, J. Bouvier, F. M. Walter, S. G. Gregory, M. B. Skelly, G. A. J. Hussain, E. Flaccomio, C. Argiroffi, K. N. Grankin, M. M. Jardine, F. Menard, C. Dougados, M. M. Romanova and the MaPP* collaboration, 2011, 412, 2454.
    * MaPP = magnetic protostars and planets
    NASA ADS   astro-ph

  19. Magnetospheric accretion and spin-down of the prototypical classical T Tauri stars AA Tau,
    J.-F. Donati, M. B. Skelly, J. Bouvier, S. G. Gregory, K. N. Grankin, M. M. Jardine, G. A. J. Hussain, F. Menard, C. Dougados, Y. Unruh, S. Mohanty, M. Auriere, J. Morin, R. Fares and the MaPP* collaboration, 2010, MNRAS, 409, 1347.
    * MaPP = magnetic protostars and planets
    NASA ADS   astro-ph

  20. Review article: The magnetic fields of forming solar-like stars,
    S. G. Gregory, M. Jardine, C. G. Gray and J.-F. Donati, 2010, review commisioned for Reports on Progress in Physics, 73, 126901.
    NASA ADS   astro-ph

  21. Complex magnetic topology and strong differential rotation on the low-mass T Tauri star V2247 Oph,
    J.-F. Donati, M. B. Skelly, J. Bouvier, M. M. Jardine, S. G. Gregory, J. Morin, G. A. J. Hussain, C. Dougados, F. Menard and Y. Unruh, 2010, MNRAS, 402, 1426.
    NASA ADS   astro-ph

  22. The non-dipolar magnetic fields of accreting T Tauri stars,
    S. G. Gregory, S. P. Matt, J.-F. Donati and M. Jardine, 2008, MNRAS, 389, 1839.
    NASA ADS   astro-ph

  23. X-ray flares in Orion young stars II: Flares, magnetospheres, and protoplanetary disks,
    K. V. Getman, E. D. Feigelson, G. Micela, M. Jardine, S. G. Gregory and G. P. Garmire, 2008, ApJ, 688, 437.
    NASA ADS   astro-ph

  24. Coronal structure of the classical T Tauri star V2129 Oph,
    M. Jardine, S. G. Gregory and J.-F. Donati, 2008, MNRAS, 386, 688.
    NASA ADS   astro-ph

  25. Magnetospheric accretion on the T Tauri star BP Tauri,
    J.-F. Donati, M. Jardine, S. G. Gregory, P. Petit, F. Paletou, J. Bouvier, C. Dougados, F. Menard, A. C. Cameron, T. J. Harries, G. A. J. Hussain, Y. Unruh, J. Morin, S. C. Marsden, N. Manset, M. Auriere, C. Catala and E. Alecian, 2008, MNRAS, 386, 1234.
    NASA ADS   astro-ph

  26. Magnetic fields and accretion flows on the classical T Tauri star V2129 Oph,
    J.-F. Donati, M. Jardine, S. G. Gregory, P. Petit, J. Bouvier, C. Dougados, F. Menard, A. C. Cameron, T. J. Harries, S. V. Jeffers and F. Paletou, 2007, MNRAS, 380, 1297.
    NASA ADS   astro-ph
    UK Press release: Spinning slowly in the web
    French Press release: Nature's recipe for building new worlds: a zest of magnetic fields?
    BBC Radio Scotland live radio interview (26 September 2007)

  27. Why are accreting T Tauri stars observed to be less luminous in X-rays than non-accretors?
    S. G. Gregory, K. Wood and M. Jardine, 2007, MNRAS, 379, L35.
    NASA ADS   astro-ph

  28. Rotationally modulated X-ray emission from T Tauri stars,
    S. G. Gregory, M. Jardine, A. Collier Cameron and J.-F. Donati, 2006, MNRAS, 373, 827.
    NASA ADS   astro-ph

  29. Mass accretion on to T Tauri stars,
    S. G. Gregory, M. Jardine, I. Simpson and J.-F. Donati, 2006, MNRAS, 371, 999.
    NASA ADS   astro-ph

  30. X-ray emission from T Tauri stars,
    M. Jardine, A. Collier-Cameron, J.-F. Donati, S. G. Gregory and K. Wood, 2006, MNRAS, 367, 917.
    NASA ADS   astro-ph

  31. Rapid rotation of ultra Li-depleted halo stars and their association with blue stragglers,
    S. G. Ryan, S. G. Gregory, U. Kolb, T. C. Beers and T. Kajino, 2002, ApJ, 571, 501.
    NASA ADS   astro-ph
    Press release: Cannibalistic stars hold clue to Big Bang

Conference proceedings (14)

  1. Surface and atmospheric structure on the T Tauri star V2129 Oph,,
    F. M. Walter, E. Flaccomio, C. Argiroffi, S. H. P. Alencar, J. Bouvier, J.-F. Donati, K. V. Getman, S. G. Gregory, G. A. J. Hussain, M. Ibrahimov, M. M. Jardine and M. B. Skelly, 2011, Proceedings of the 16th Meeting on Cool Stars, Stellar Systems and the Sun (Eds: C. M. Johns-Krull, M. Browning and A. West), Seattle, August 2010, Astronomical Society of the Pacific Conference Series, 448, 755.
    NASA ADS   

  2. Coordinated optical/X-ray observations of the CTTS V2129 Oph: The Chandra View,
    E. Flaccomio, C. Argiroffi, S. H. P. Alencar, J. Bouvier, J.-F. Donati, K. V. Getman, S. G. Gregory, G. A. J. Hussain, M. Ibrahimov, M. M. Jardine, M. B. Skelly and F.M. Walter, 2011, Proceedings of the 16th Meeting on Cool Stars, Stellar Systems and the Sun (Eds: C. M. Johns-Krull, M. Browning and A. West), Seattle, August 2010, Astronomical Society of the Pacific Conference Series, 448, 603.
    NASA ADS   

  3. Multi-wavelength observing of a forming solar-like star,
    S. G. Gregory, E. Flaccomio, C. Argiroffi, J. Bouvier, J.-F. Donati, E. Feigelson, K. V. Getman, G. A. J. Hussain, M. Jardine and F.M. Walter, 2009, Proceedings of the workshop on High Resolution X-ray Spectroscopy: Towards IXO, (Eds: G. Branduardi-Raymont and A. Blustin), Mullard Space Science Laboratory of University College London, Surrey, U.K., March 2009, published electronically, p.E17.
    NASA ADS    astro-ph

  4. Stellar mass ejections,
    M. Jardine, J.-F. Donati and S. G. Gregory, 2009, Proceedings of the IAU Symposium 257: Universal Heliophysical Processes, (Ed: J. M. Schmidt), Ioannina, Greece, September 2008, CUP, 257, 201.
    NASA ADS    astro-ph

  5. The magnetic fields of accreting T Tauri stars,
    S. G. Gregory, S. P. Matt, J.-F. Donati and M. Jardine, 2009, Proceedings of the 15th Meeting on Cool Stars, Stellar Systems and the Sun (Ed: H. C. Stemples), St Andrews, July 2008, American Institute of Physics Conference Series, 1 094, 71.
    NASA ADS    astro-ph

  6. Modelling X-ray emission from stellar coronae,
    S. G. Gregory, M. Jardine, C. Argiroffi and J.-F. Donati, 2009, Proceedings of the 15th Meeting on Cool Stars, Stellar Systems and the Sun (Ed: H. C. Stemples), St Andrews, July 2008, American Institute of Physics Conference Series , 1094, 600.
    NASA ADS    astro-ph

  7. Accretion discs, low-mass protostars and planets: Probing the impact of magnetic fields on stellar formation,
    J.-F. Donati, M. Jardine, S. G. Gregory, J. Bouvier, C. Dougados and F. Menard, 2009, Proceedings of the La Rochelle school on Stellar Magnetism, (Ed: J.-P Zahn), La Rochelle, September 2007, European Astronomical Society Publication Series, 39, 133.
    NASA ADS   astro-ph

  8. Why are accreting T Tauri stars less luminous in X-rays than non-accretors?
    S. G. Gregory, K. Wood and M. Jardine, 2007, Proceedings of the IAU Symposium 243: Star-disk Interaction in Young Stars (Eds: J. Bouvier and I. Appenzeller), Grenoble, May 2007, CUP, 163.
    NASA ADS   astro-ph

  9. Magnetic field at the inner disk edge,
    M. Jardine, S. G. Gregory and J.-F. Donati, 2007, Proceedings of the IAU Symposium 243: Star-disk Interaction in Young Stars (Eds: J. Bouvier and I. Appenzeller), Grenoble, May 2007, CUP, 51.
    NASA ADS

  10. Rotational modulation of X-ray emission from T Tauri stars,
    S. G. Gregory, M. Jardine, A. Collier-Cameron and J.-F. Donati, 2007, Proceedings of Coronae of Stars and Accretion Discs (Eds: M. Massi and T. Preibisch), Bonn, December 2006, Memorie della Societa Astronomica Italiana, 78, 35 6.
    NASA ADS   astro-ph

  11. Magnetic topologies of cool stars,
    J.-F. Donati, M. Jardine, P. Petit, J. Morin, J. Bouvier, A. C. Cameron, X. Delfosse, B. Dintrans, W. Dobler, C. Dougados, J. Ferreira, T. Forveille, S. G. Gregory, T. Harries, G. A. J. Hussain, F. Menard and F. Paletou, 2008, P roceedings of the 14th Meeting on Cool Stars, Stellar Systems and the Sun (Ed: G. van Belle), Pasadena, November 2006, ASP Conference Series, 384, 156.
    NASA ADS   astro-ph

  12. Accretion channelling in classical T Tauri stars,
    S. G. Gregory, M. Jardine, A. Collier-Cameron and J.-F. Donati, 2005, Proceedings of the 13th Meeting on Cool Stars, Stellar Systems and the Sun (Eds: F. Favata, G. A. J. Hussain and B. Battrick), Hamburg, July 2004, ESA SP-560, 191.
    NASA ADS   Proceedings (.ps.gz file)

  13. Mass accretion on to T Tauri stars,
    S. G. Gregory, M. Jardine, I. Simpson, A. Collier-Cameron and J.-F. Donati, Proceedings of Protostars and Planets V (Eds: B. Reipurth, D. Jewitt, and K. Keil), Hilton Waikoloa Village, Hawai'i, October 2005, LPI Contribution No . 1286, 8149.
    NASA ADS

  14. X-ray emission from T Tauri stars,
    M. Jardine, S. G. Gregory, A. Collier-Cameron and J.-F. Donati, Proceedings of Protostars and Planets V (Eds: B. Reipurth, D. Jewitt, and K. Keil), Hilton Waikoloa Village, Hawai'i, October 2005, LPI Contribution No. 1286, 822 8.
    NASA ADS

Other publications including AAS abstracts (7)

  1. Variable X-ray emission from the accretion shock in the classical T Tauri star V2129 Oph,
    E. Flaccomio, C. Argiroffi, J. Bouvier, J.-F. Donati, K. V. Getman, S. G. Gregory, G. A. J. Hussain, M. M. Jardine, M. B. Skelly and F. M. Walter, 2011, American Astronomical Society Meeting 218, 407.11
    NASA ADS

  2. Testing the ability of field extrapolation models to predict the X-ray emission properties of pre-main sequence stars,
    S. G. Gregory, E. Flaccomio, C. Argiroffi, J. Bouvier, J.-F. Donati, E. D. Feigelson, K. V. Getman, G. A. J. Hussain, M. Ibrahimov, M. Jardine, and F. M. Walter, 2010, Bulletin of the American Astronomical Society, 11, 17.13.
    NASA ADS

  3. Chandra and HST observations of the high energy (X-ray/UV) radiation fields for an evolutionary sequence of pre-main sequence stars,
    A. Brown, G. Herczeg, J. M. Brown, F. M. Walter, J. Valenti, D. Ardilla, L. A. Hillenbrand, S. Edwards, C. M. Johns-Krull, R. Alexander, E. A. Bergin, N. Calvet, T. J. Bethell, L. Ingleby, J. S. Bary, M. Audard, C. Baldovin, E. Roueff, H. Abgrall, S. G. Gregory, T. R. Ayres and J. L. Linsky, 2010, Bulletin of the American Astronomical Society, 11, 17.09.
    NASA ADS

  4. Modeling X-ray emission from the coronae of low mass stars,
    S. G. Gregory, M. Jardine, C. Argiroffi and J.-F. Donati, 2009, Bulletin of the American Astronomical Society, 213, 140.1.
    NASA ADS

  5. Big X-ray flares from baby stars,
    K. V. Getman, E. D. Feigelson, G. Micela, P. S. Broos, M. M. Jardine, S. G. Gregory and G. P. Garmire, 2009, Bulletin of the American Astronomical Society, 213, 318.03.
    NASA ADS

  6. The magnetic fields of young Suns,
    S. G. Gregory, M. Jardine and J.-F. Donati, 2007, Bulletin of the American Astronomical Society, 39, 998.
    NASA ADS

  7. T Tauri stars: mass accretion and X-ray emission,
    S. G. Gregory, 2007, The Observatory, 127, 361.
    NASA ADS