Mostrar el registro sencillo del ítem
dc.contributor.author
Richardson, N. D.
dc.contributor.author
Gies, D. R.
dc.contributor.author
Henry, T. J.
dc.contributor.author
Fernandez Lajus, Eduardo Eusebio
![Se ha confirmado la validez de este valor de autoridad por un usuario](/themes/CONICETDigital/images/authority_control/invisible.gif)
dc.contributor.author
Okazaki, A. T.
dc.date.available
2016-12-22T18:54:11Z
dc.date.issued
2010-04
dc.identifier.citation
Richardson, N. D. ; Gies, D. R. ; Henry, T. J. ; Fernandez Lajus, Eduardo Eusebio; Okazaki, A. T. ; The H-alpha variations of Eta Carinae during the 2009.0 spectroscopic event; Iop Publishing; Astronomical Journal; 139; 4; 4-2010; 1534-1541
dc.identifier.issn
0004-6256
dc.identifier.uri
http://hdl.handle.net/11336/9954
dc.description.abstract
We report on H-alpha spectroscopy of the 2009.0 spectroscopic event of eta Carinae collected via SMARTS observations using the CTIO 1.5 m telescope and echelle spectrograph. Our observations were made almost every night over a two month interval around the predicted minimum of eta Car. We observed a significant fading of the line emission that reached a minimum seven days after the X-ray minimum. About 17 d prior to the H-alpha flux minimum, the H-alpha profile exhibited the emergence of a broad, P Cygni type, absorption component (near a Doppler shift of -500 km/s) and a narrow absorption component (near -144 km/s and probably associated with intervening gas from the Little Homunculus Nebula). All these features were observed during the last event in 2003.5 and are probably related to the close periastron passage of the companion. We argue that these variations are consistent with qualitative expectations about changes in the primary star´s stellar wind that result from the wind-wind collision with a massive binary companion and from atmospheric eclipses of the companion.
dc.format
application/pdf
dc.language.iso
eng
dc.publisher
Iop Publishing
![Se ha confirmado la validez de este valor de autoridad por un usuario](/themes/CONICETDigital/images/authority_control/invisible.gif)
dc.rights
info:eu-repo/semantics/openAccess
dc.rights.uri
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.subject
Early Type Stars
dc.subject
Eta Carinae (Estrella)
dc.subject
Star Winds
dc.subject
Outflows
dc.subject.classification
Astronomía
![Se ha confirmado la validez de este valor de autoridad por un usuario](/themes/CONICETDigital/images/authority_control/invisible.gif)
dc.subject.classification
Ciencias Físicas
![Se ha confirmado la validez de este valor de autoridad por un usuario](/themes/CONICETDigital/images/authority_control/invisible.gif)
dc.subject.classification
CIENCIAS NATURALES Y EXACTAS
![Se ha confirmado la validez de este valor de autoridad por un usuario](/themes/CONICETDigital/images/authority_control/invisible.gif)
dc.title
The H-alpha variations of Eta Carinae during the 2009.0 spectroscopic event
dc.type
info:eu-repo/semantics/article
dc.type
info:ar-repo/semantics/artículo
dc.type
info:eu-repo/semantics/publishedVersion
dc.date.updated
2016-12-14T12:56:14Z
dc.journal.volume
139
dc.journal.number
4
dc.journal.pagination
1534-1541
dc.journal.pais
Estados Unidos
![Se ha confirmado la validez de este valor de autoridad por un usuario](/themes/CONICETDigital/images/authority_control/invisible.gif)
dc.journal.ciudad
Nueva York
dc.description.fil
Fil: Richardson, N. D. . Georgia State University; Estados Unidos
dc.description.fil
Fil: Gies, D. R. . Georgia State University; Estados Unidos
dc.description.fil
Fil: Henry, T. J. . Georgia State University; Estados Unidos
dc.description.fil
Fil: Fernandez Lajus, Eduardo Eusebio. Universidad Nacional de la Plata. Facultad de Ciencias Astronómicas y Geofísicas; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
dc.description.fil
Fil: Okazaki, A. T. . Hokkai-Gakuen University. Faculty of Engineering; Japón
dc.journal.title
Astronomical Journal
![Se ha confirmado la validez de este valor de autoridad por un usuario](/themes/CONICETDigital/images/authority_control/invisible.gif)
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/doi/http://dx.doi.org/10.1088/0004-6256/139/4/1534
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/url/http://iopscience.iop.org/article/10.1088/0004-6256/139/4/1534/meta
Archivos asociados