Zobrazeno 1 - 6
of 6
pro vyhledávání: '"Dimitri Douchin"'
Autor:
Dimitri Douchin, David J. Frew, Jean-Claude Passy, Michael T. Fitzgerald, George H. Jacoby, Maxwell Moe, D. Harmer, Orsola De Marco, G. Jasniewicz, Todd C. Hillwig
Publikováno v:
Monthly Notices of the Royal Astronomical Society. 448:3132-3155
There is no conclusive explanation of why ∼80 per cent of planetary nebulae (PNe) are non-spherical. In the Binary Hypothesis, a binary interaction is a preferred channel to form a non-spherical PN. A fundamental step to corroborate or disprove the
Autor:
Quentin A. Parker, Dimitri Douchin, Milorad Stupar, Ashkbiz Danehkar, Michael T. Fitzgerald, David J. Frew, Stefanie Wachter, Ivan S. Bojičić, K. DePew
Publikováno v:
Monthly Notices of the Royal Astronomical Society. 440:1345-1364
We have conducted a detailed multi-wavelength study of the peculiar nebula Abell 48 and its central star. We classify the nucleus as a helium-rich, hydrogen-deficient star of type [WN4-5]. The evidence for either a massive WN or a low-mass [WN] inter
Extending the planetary mass function to Earth mass by microlensing at moderately high magnification
Autor:
Fumio Abe, Philip Yock, C. S. Botzler, Ellen Barnard, Julie Baudry, Charlotte Airey, Nicholas J. Rattenbury, Yvette C. Perrott, Anna Niemiec, M. Freeman, Dimitri Douchin, Lydia C. Philpott, Patricia Larsen
Publikováno v:
Monthly Notices of the Royal Astronomical Society. 431:2975-2985
A measurement by microlensing of the planetary mass function of planets with masses ranging from 5M_E to 10M_J and orbital radii from 0.5 to 10 AU was reported recently. A strategy for extending the mass range down to (1-3)M_E is proposed here. This
Autor:
N. J. Rattenbury, F. Hayashi, J. A. R. Caldwell, V. Batista, Daisuke Suzuki, Arnaud Cassan, J. B. Marquette, D. Moorhouse, Y. Muraki, N. R. Clay, L. Skuljan, K. Nishimoto, S. Hosaka, Fumio Abe, Dimitri Douchin, P. C. M. Yock, Jennifer C. Yee, Martin Dominik, J. Donatowicz, William H. Allen, Alasdair Allan, Jack D. Drummond, Cameron Nelson, Akihiko Fukui, G. Thornley, Andrew Gould, R. M. Martin, K. Ohnishi, K. H. Cook, Andrew A. Cole, K. Wada, Ian A. Bond, Li-Wei Hung, Kailash C. Sahu, P. M. Kilmartin, C. Han, C.-U. Lee, S. Dieters, L. Wyrzykowski, Kisaku Kamiya, Ch. Coutures, D. M. Bramich, N. Kains, N. Miyake, S. Makita, S. Kozlowski, J. W. Menzies, D. Dominis Prester, Jennie McCormick, S. R. Kane, K. Furusawa, P. Browne, Jan Skowron, Michael D. Albrow, Andrew Williams, D. Kubas, M. Zub, David P. Bennett, M. Freeman, Winston L. Sweatman, Igor Soszyński, P. J. Tristram, Y. Matsubara, Yoshitaka Itow, Joachim Wambsganss, J. G. Greenhill, Kimiaki Masuda, K. Ulaczyk, Subo Dong, Yiannis Tsapras, S. N. Fraser, B. S. Gaudi, F. Mallia, Colin Snodgrass, Stephane Brillant, Andrzej Udalski, Michał K. Szymański, C. S. Botzler, Takahiro Nagayama, J. P. Beaulieu, R. W. Pogge, Darren L. DePoy, C. J. Mottram, Keith Horne, Y. C. Perrott, To. Saito, L. A. G. Monard, C. H. Ling, Takahiro Sumi, Grzegorz Pietrzyński, P. Fouque, Byeong-Gon Park, A. V. Korpela, Anaëlle Maury, M. Kubiak, Rachel Street, John B. Hearnshaw, Radek Poleski, Denis J. Sullivan, Iain A. Steele, Greg Bolt, W. Lin
Publikováno v:
The Astrophysical Journal
Astrophysical Journal
Artículos CONICYT
CONICYT Chile
instacron:CONICYT
Astrophysical Journal
Artículos CONICYT
CONICYT Chile
instacron:CONICYT
We present the first example of binary microlensing for which the parameter measurements can be verified (or contradicted) by future Doppler observations. This test is made possible by a confluence of two relatively unusual circumstances. First, the
Publikováno v:
Proceedings of the International Astronomical Union. 7:344-345
The Kepler Observatory offers unprecedented photometric precision (
Autor:
Robin Ciardullo, Philipp Teutsch, Matthias Kronberger, Richard D. Crisp, Dave Riddle, Michael Howell, Dimitri Douchin, David J. Frew, George H. Jacoby, Quentin A. Parker, Dianne Harmer, Steve B. Howell, Dana Patchick, Travis A. Rector, Orsola De Marco
Publikováno v:
Proceedings of the International Astronomical Union. 7:414-415
Having surveyed ≈ 10% of the sky, we have identified more than 130 PN candidates by surveying multicolour Digitized Sky Survey (DSS), Sloan Digitized Sky Survey (SDSS), and combined [O III], Hα and [S II] images. In a first imaging and spectroscop