Zobrazeno 1 - 10
of 59
pro vyhledávání: '"Jason Grunhut"'
Autor:
Torsten Böhm, Alex C. Carciofi, Raman K. Prinja, Colin P. Folsom, Rodolfo H. Barbá, Lex Kaper, B. de Batz, Jean-François Donati, J. C. Bouret, Werner W. Weiss, J. Braithwaite, David A. Bohlender, John D. Landstreet, Fabrice Martins, A. F. J. Moffat, W. L. F. Marcolino, Mary E. Oksala, Richard Ignace, Coralie Neiner, J. O. Sundqvist, C. Catala, N. St. Louis, I. Yakunin, A. Blazère, Yaël Nazé, B. Leroy, Lilia Ferrario, Alexander W. Fullerton, Evelyne Alecian, Stanley P. Owocki, Richard H. D. Townsend, Stefano Bagnulo, J. D. Bailey, David H. Cohen, Stéphane Mathis, Theresa Lüftinger, Alexandre David-Uraz, Gregg A. Wade, Th. Rivinius, Jason Grunhut, Nadine Manset, D. Harrington, Matt Shultz, Jorick S. Vink, Michel Aurière, Oleg Kochukhov, Véronique Petit, Maryline Briquet, Asif ud-Doula, Huib F. Henrichs, I. D. Howarth
Publikováno v:
Monthly Notices of the Royal Astronomical Society
Monthly Notices of the Royal Astronomical Society, 2015, 456 (1), pp.2-22. ⟨10.1093/mnras/stv2568⟩
Monthly Notices of the Royal Astronomical Society, Oxford University Press (OUP): Policy P-Oxford Open Option A, 2015, 456 (1), pp.2-22. ⟨10.1093/mnras/stv2568⟩
Repositório Institucional da USP (Biblioteca Digital da Produção Intelectual)
Universidade de São Paulo (USP)
instacron:USP
Monthly Notices of the Royal Astronomical Society, 456(1), 2-22. Oxford University Press
Monthly Notices of the Royal Astronomical Society, 2015, 456 (1), pp.2-22. ⟨10.1093/mnras/stv2568⟩
Monthly Notices of the Royal Astronomical Society, Oxford University Press (OUP): Policy P-Oxford Open Option A, 2015, 456 (1), pp.2-22. ⟨10.1093/mnras/stv2568⟩
Repositório Institucional da USP (Biblioteca Digital da Produção Intelectual)
Universidade de São Paulo (USP)
instacron:USP
Monthly Notices of the Royal Astronomical Society, 456(1), 2-22. Oxford University Press
The MiMeS project is a large-scale, high resolution, sensitive spectropolarimetric investigation of the magnetic properties of O and early B type stars. Initiated in 2008 and completed in 2013, the project was supported by 3 Large Program allocations
Autor:
Alexandre David-Uraz, Gregg A. Wade, David Asher, Coralie Neiner, Michał K. Szymański, Matt Shultz, Ian D. Howarth, Jason Grunhut, Melissa Munoz, Jorick S. Vink, Nidia Morrell, Stefano Bagnulo, Yaël Nazé, Joachim Puls, Chris Evans, Paul A. Crowther
Publikováno v:
Astronomy and Astrophysics-A&A
Astronomy and Astrophysics-A&A, EDP Sciences, 2020, 635, pp.A163. ⟨10.1051/0004-6361/201937098⟩
Astronomy and Astrophysics-A&A, EDP Sciences, 2020, 635, pp.A163. ⟨10.1051/0004-6361/201937098⟩
Despite their rarity, massive stars dominate the ecology of galaxies via their strong, radiatively-driven winds throughout their lives and as supernovae in their deaths. However, their evolution and subsequent impact on their environment can be signi
Autor:
Ke Ma, Dennis Zaritsky, Moo Young Chun, R. Elliot Meyer, Joshua Eisner, Jason Grunhut, Stephen S. Eikenberry, Basil Blank, Dae-Sik Moon, Chueh Yi Chou, Suresh Sivanandam, Charles R. Henderson, Byeong-Gon Park, Miranda Jarvis
Publikováno v:
Ground-based and Airborne Instrumentation for Astronomy VII.
We have recently commissioned a novel infrared (0:9-1:7 μm) integral field spectrograph (IFS) called the Wide Integral Field Infrared Spectrograph (WIFIS). WIFIS is a unique instrument that offers a very large field-of-view (5000 x 2000) on the 2.3-
Autor:
Cecilia Garraffo, Jason Grunhut, Mary E. Oksala, J. Silvester, E. M. Amazo-Gómez, Sofia P. Moschou, Ofer Cohen, Jean-François Donati, Julián D. Alvarado-Gómez, Gaitee A. J. Hussain, Beate Stelzer, Jorge Sanz-Forcada, Jeremy J. Drake
Publikováno v:
Monthly Notices of the Royal Astronomical Society
Monthly Notices of the Royal Astronomical Society, Oxford University Press (OUP): Policy P-Oxford Open Option A, 2018, 473 (4), pp.4326-4338. ⟨10.1093/mnras/stx2642⟩
Monthly Notices of the Royal Astronomical Society, Oxford University Press (OUP): Policy P-Oxford Open Option A, 2018, 473 (4), pp.4326-4338. ⟨10.1093/mnras/stx2642⟩
A former member of the Hyades cluster, $\iota$ Horologii ($\iota$ Hor) is a planet-hosting Sun-like star which displays the shortest coronal activity cycle known to date ($P_{\rm cyc}\sim$ 1.6 yr). With an age of $\sim$$625$ Myr, $\iota$ Hor is also
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::0f727c0a1c26b1008388e60fa171542f
https://hal-obspm.ccsd.cnrs.fr/obspm-02296260
https://hal-obspm.ccsd.cnrs.fr/obspm-02296260
Autor:
Michel Aurière, Guy Perrin, Jason Grunhut, Gregg A. Wade, Jean-François Donati, A. López Ariste, Agnès Lèbre, Miguel Montargès, Andrea Chiavassa, Eric Josselin, Julien Morin, Pierre Kervella, Pascal Petit, R. Konstantinova-Antova, P. Mathias, B. Tessore, Fabrice Herpin
Publikováno v:
Astronomy and Astrophysics-A&A
Astronomy and Astrophysics-A&A, 2018, 615, pp.A116. ⟨10.1051/0004-6361/201732542⟩
Astronomy and Astrophysics-A&A, EDP Sciences, 2018, 615, pp.A116. ⟨10.1051/0004-6361/201732542⟩
Astronomy & Astrophysics
Astronomy and Astrophysics-A&A, 2018, 615, pp.A116. ⟨10.1051/0004-6361/201732542⟩
Astronomy and Astrophysics-A&A, EDP Sciences, 2018, 615, pp.A116. ⟨10.1051/0004-6361/201732542⟩
Astronomy & Astrophysics
Context. Betelgeuse is an M-type supergiant that presents a circularly polarized (Stokes V) signal in its line profiles, interpreted in terms of a surface magnetic field. Aims. The weak circular polarization signal has been monitored over 7.5 years i
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::456cfc8f80b53c34110fe22be1e1509b
https://hal.science/hal-01760230/document
https://hal.science/hal-01760230/document
Autor:
Richard H. D. Townsend, Véronique Petit, T. Rivinus, David A. Bohlender, Stan Owocki, Gregg A. Wade, Matt Shultz, Coralie Neiner, Jason Grunhut, David H. Cohen, Dmitry Monin, James Sikora, Asif ud-Doula, Mary E. Oksala
Publikováno v:
Monthly Notices of the Royal Astronomical Society
Monthly Notices of the Royal Astronomical Society, Oxford University Press (OUP): Policy P-Oxford Open Option A, 2015, 451 (2), pp.1928-1938. ⟨10.1093/mnras/stv1051⟩
Monthly Notices of the Royal Astronomical Society, 2015, 451 (2), pp.1928-1938. ⟨10.1093/mnras/stv1051⟩
Monthly Notices of the Royal Astronomical Society, Oxford University Press (OUP): Policy P-Oxford Open Option A, 2015, 451 (2), pp.1928-1938. ⟨10.1093/mnras/stv1051⟩
Monthly Notices of the Royal Astronomical Society, 2015, 451 (2), pp.1928-1938. ⟨10.1093/mnras/stv1051⟩
In this paper we report 23 magnetic field measurements of the B3IV star HD 23478: 12 obtained from high resolution Stokes $V$ spectra using the ESPaDOnS (CFHT) and Narval (TBL) spectropolarimeters, and 11 from medium resolution Stokes $V$ spectra obt
Autor:
Gregg A. Wade, Th. Rivinius, Richard H. D. Townsend, James Sikora, Colin P. Folsom, Matt Shultz, Jason Grunhut, Otmar Stahl
Publikováno v:
Monthly Notices of the Royal Astronomical Society. 449:3945-3965
We analyze a high resolution spectropolarimetric dataset collected for the He-weak B3p IV star HR 2949. The Zeeman effect is visible in the circularly polarized component of numerous spectral lines. The longitudinal magnetic field varies between appr
Publikováno v:
IAU Symposium
Polarimetry: The Sun to Stars and Stellar Environments (**NEW DATES**), IAU Symposium 305
Polarimetry: The Sun to Stars and Stellar Environments (**NEW DATES**), IAU Symposium 305, Nov 2014, Punta Leona, Costa Rica, Costa Rica. pp.61-66
Polarimetry: The Sun to Stars and Stellar Environments (**NEW DATES**), IAU Symposium 305
Polarimetry: The Sun to Stars and Stellar Environments (**NEW DATES**), IAU Symposium 305, Nov 2014, Punta Leona, Costa Rica, Costa Rica. pp.61-66
Observations of stable mainly dipolar magnetic fields at the surface of ~7% of single hot stars indicate that these fields are of fossil origin, i.e. they descend from the seed field in the molecular clouds from which the stars were formed. The recen
Autor:
Cecilia Garraffo, Jason Grunhut, G. A. J. Hussain, J. J. Drake, Ofer Cohen, Julián D. Alvarado-Gómez
Publikováno v:
Proceedings of the International Astronomical Union. 10:282-287
We present the results of a numerical simulation of the corona and wind structure of the Sun-like exoplanet-host GJ 3021 using a global magnetohydrodynamic (MHD) model. The simulation is driven by the radial component of the surface magnetic field re
Autor:
David H. Cohen, Alexandre David-Uraz, Gregg A. Wade, Richard H. D. Townsend, Mary E. Oksala, J. O. Sundqvist, Asif ud-Doula, Marc Gagné, Sushma Kurapati, Matt Shultz, Jason Grunhut, Véronique Petit, Poonam Chandra
Publikováno v:
Mon.Not.Roy.Astron.Soc.
Mon.Not.Roy.Astron.Soc., 2017, 465 (2), pp.2160-2169. ⟨10.1093/mnras/stw2838⟩
Mon.Not.Roy.Astron.Soc., 2017, 465 (2), pp.2160-2169. 〈10.1093/mnras/stw2838〉
Monthly Notices of the Royal Astronomical Society
Mon.Not.Roy.Astron.Soc., 2017, 465 (2), pp.2160-2169. ⟨10.1093/mnras/stw2838⟩
Mon.Not.Roy.Astron.Soc., 2017, 465 (2), pp.2160-2169. 〈10.1093/mnras/stw2838〉
Monthly Notices of the Royal Astronomical Society
We conducted a survey of seven magnetic O and eleven B-type stars with masses above $8M_{\odot}$ using the Very Large Array in the 1cm, 3cm and 13cm bands. The survey resulted in a detection of two O and two B-type stars. While the detected O-type st
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::844021d1e65e02ce2e983753ee8a75b6
https://hal.archives-ouvertes.fr/hal-01554742
https://hal.archives-ouvertes.fr/hal-01554742