Zobrazeno 1 - 10 of 29 pro vyhledávání: '"Thomas I. Madura"'
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Akademický článek
The Long-term Spectral Changes of Eta Carinae: Are they Caused by a Dissipating Occulter as Indicated by cmfgen Models?
Autor: Augusto Damineli, Desmond J. Hillier, Felipe Navarete, Anthony F. J. Moffat, Gerd Weigelt, Michael F. Corcoran, Theodore. R. Gull, Noel D. Richardson, Peter Ho, Thomas I. Madura, David Espinoza-Galeas, Henrik Hartman, Patrick Morris, Connor S. Pickett, Ian R. Stevens, Christopher M. P. Russell, Kenji Hamaguchi, Francisco J. Jablonski, Mairan Teodoro, Padric McGee, Paulo Cacella, Bernard Heathcote, Ken M. Harrison, Mark Johnston, Terry Bohlsen, Giorgio Di Scala
Publikováno v: The Astrophysical Journal, Vol 954, Iss 1, p 65 (2023)
Eta Carinae ( η Car) exhibits a unique set of P Cygni profiles with both broad and narrow components. Over many decades, the spectrum has changed—there has been an increase in observed continuum fluxes and a decrease in Fe ii and H i emission-line
Externí odkaz: https://doaj.org/article/86e9a73b56804e269749efd027e693c9
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2
VLTI-MATISSE chromatic aperture-synthesis imaging of η Carinae's stellar wind across the Brα line: Periastron passage observations in February 2020
Autor: Th. Rivinius, C. M. P. Russell, A. Domiciano de Souza, Uwe Beckmann, Lucas Labadie, F. Allouche, P. Cruzalèbes, Sylvie Robbe-Dubois, Antoine Mérand, William C. Danchi, A. F. J. Moffat, Kenji Hamaguchi, Michael F. Corcoran, József Varga, Alexis Matter, Thomas I. Madura, Stephane Lagarde, Sebastian Wolf, Anthony Meilland, Walter Jaffe, Paul Bristow, T. R. Gull, Felix Bettonvil, D. A. Espinoza-Galeas, Jose H. Groh, J. C. Augereau, Carsten Dominik, W. J. de Wit, Markus Schöller, J. Leftley, V. Hocdé, Uwe Graser, R. van Boekel, F. Navarete, L. Klarmann, K. Ohnaka, Leonard Burtscher, Th. Henning, Karl-Heinz Hofmann, Augusto Damineli, Ian R. Stevens, C. Connot, Klaus Meisenheimer, Stefan Kraus, Patrick W. Morris, G. Yoffe, Michiel R. Hogerheijde, Romain Petrov, Ph. Berio, M. Heininger, Henrik Hartman, J. W. Isbell, Markus Wittkowski, Eric Pantin, E. Kokoulina, J. Drevon, Julien Woillez, L. B. F. M. Waters, E. Nußbaum, Dieter Schertl, Bruno Lopez, Alexander Kreplin, Gerd Weigelt, Florentin Millour, D. J. Hillier, J. Hron, M. Lehmitz, V. Gámez Rosas, J. Sanchez-Bermudez, Noel D. Richardson, C. A. Hummel, Claudia Paladini, Andrea Mehner, Farrokh Vakili, Andreas Glindemann, P. Antonelli, C. Leinert, Gérard Zins, Philippe Stee
Publikováno v: Astronomy & Astrophysics, 652:A140. EDP Sciences
Astronomy & Astrophysics, 652
Astronomy & Astrophysics, 652, 1-22
Astronomy & Astrophysics, 652, pp. 1-22
Context. Eta Carinae is a highly eccentric, massive binary system (semimajor axis ~15.5 au) with powerful stellar winds and a phase-dependent wind-wind collision (WWC) zone. The primary star, η Car A, is a luminous blue variable (LBV); the secondary
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::d06daaf6607db2ea8e3aee0292014bdb
https://dare.uva.nl/personal/pure/en/publications/vltimatisse-chromatic-aperturesynthesis-imaging-of--carinaes-stellar-wind-across-the-br-line(1b2ef33d-ecf6-411a-8241-108b7aa6f984).html
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3
CO, Water, and Tentative Methanol in η Carinae Approaching Periastron
Autor: Steven B. Charnley, Anthony F. J. Moffat, Laurent Loinard, Gioia Rau, Gerd Weigelt, Martin A. Cordiner, Noel D. Richardson, Augusto Damineli, M. Y. Palmer, Andrea Mehner, Thomas I. Madura, Patrick W. Morris, Jose H. Groh, Theodore R. Gull, Michael F. Corcoran
The complex circumstellar environment around the massive binary and luminous blue variable η Carinae is known to harbor numerous light molecules, emitting most strongly in rotational states with upper level energies to ~300 K. In circumstellar gas,
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::0c9f132236469e1dfc31d4592f472b02
https://resolver.caltech.edu/CaltechAUTHORS:20200401-070803450
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4
BRITE-Constellation reveals evidence for pulsations in the enigmatic binary η Carinae
Autor: Gerd Weigelt, Michael F. Corcoran, Theodore R. Gull, Augusto Damineli, Thomas I. Madura, Gregg A. Wade, Werner W. Weiss, Noel D. Richardson, Gerald Handler, Kenji Hamaguchi, Adam Popowicz, D. John Hillier, Anthony F. J. Moffat, Konstanze Zwintz, Andrzej Pigulski, Herbert Pablo, Gloria Koenigsberger, Christiaan Sterken
Publikováno v: Repositório Institucional da USP (Biblioteca Digital da Produção Intelectual)
Universidade de São Paulo (USP)
instacron:USP
$\eta$ Car is a massive, eccentric binary with a rich observational history. We obtained the first high-cadence, high-precision light curves with the BRITE-Constellation nanosatellites over 6 months in 2016 and 6 months in 2017. The light curve is co
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::5620dfa3c7fdcc3944ace09f8d6c8cf3
https://doi.org/10.1093/mnras/sty157
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Distinguishing circumstellar from stellar photometric variability in Eta Carinae
Autor: T. R. Gull, F. Navarete, M. C. Scalia, Leonardo A. Almeida, E. Fernández-Lajús, A. F. J. Moffat, G F Ruiz, N. Salerno, Kenji Hamaguchi, Thomas I. Madura, Michael F. Corcoran, Francisco Jablonski, Gerd Weigelt, D. J. Hillier, Augusto Damineli, Daniel S. C. Damineli, Noel D. Richardson
Publikováno v: SEDICI (UNLP)
Universidad Nacional de La Plata
instacron:UNLP
CONICET Digital (CONICET)
Consejo Nacional de Investigaciones Científicas y Técnicas
instacron:CONICET
Repositório Institucional da USP (Biblioteca Digital da Produção Intelectual)
Universidade de São Paulo (USP)
instacron:USP
The interacting binary Eta Carinae remains one of the most enigmatic massive stars in our Galaxy despite over four centuries of observations. In this work, its light curve from the ultraviolet to the near-infrared is analysed using spatially resolved
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::3791ee1c47668193414665ec3ace30c6
http://sedici.unlp.edu.ar/handle/10915/125100
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Tov∞and beyond! The He i absorption variability across the 2014.6 periastron passage of η Carinae
Autor: Theodore R. Gull, M. Teodoro, Michael F. Corcoran, Anthony F. J. Moffat, Jose H. Groh, Thomas I. Madura, Nicola Clementel, Frederick M. Walter, D. John Hillier, Augusto Damineli, Kenji Hamaguchi, Noel D. Richardson, Lucas St-Jean, Christopher M. P. Russell
Publikováno v: Monthly Notices of the Royal Astronomical Society. 461:2540-2558
We have monitored the massive binary star $\eta$ Carinae with the CTIO/SMARTS 1.5~m telescope and CHIRON spectrograph from the previous apastron passage of the system through the recent 2014.6 periastron passage. Our monitoring has resulted in a larg
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::08bb8f9e49e9ec93477157ad7bf0faa4
https://doi.org/10.1093/mnras/stw1415
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10
The fossil wind structures of Eta Carinae: changes across on 5.54-year cycle
Autor: D. John Hillier, Gerd Weigelt, Kenji Hamaguchi, Thomas I. Madura, Noel D. Richardson, M. Teodoro, Theodore R. Gull, Nicola Clementel, Augusto Damineli, Keith Feggans, Michael F. Corcoran, Jose H. Groh, Anthony F. J. Moffat, Don J. Lindler
Publikováno v: Repositório Institucional da USP (Biblioteca Digital da Produção Intelectual)
Universidade de São Paulo (USP)
instacron:USP
Eta Carinae, the closest, active, massive binary containing a highly unstable LBV, exhibits expanding, compressed wind shells, seen in emission, that are spatially and spectrally resolved by \hst/\stis. Starting in June 2009, these structures were ma
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::53cfdfe03ef2294f5975950e9d2d4726
http://arxiv.org/abs/1608.06193
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