Early results from the galactic O-star spectroscopic survey: C III emission lines in of spectra

On the basis of an extensive new spectroscopic survey of Galactic O stars, we introduce the Ofc category, which consists of normal spectra with C III λλ4647-4650-4652 emission lines of comparable intensity to those of the Of defining lines N III λλ4634-4640-4642. The former feature is strongly peake...

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Detalles Bibliográficos
Autores principales:	Walborn, Nolan Revere, Sota, Alfredo, Maíz Apellániz, Jesús, Alfaro, Emilio J., Morrell, Nidia Irene, Barbá, Rodolfo Héctor, Arias, Julia Inés, Gamen, Roberto Claudio
Formato:	Articulo
Lenguaje:	Inglés
Publicado:	2010
Materias:	Ciencias Astronómicas Stars: early-type Stars: emission-line, Be Stars: fundamental parameters
Acceso en línea:	http://sedici.unlp.edu.ar/handle/10915/82503
Aporte de:	SEDICI (UNLP) de Universidad Nacional de La Plata

id	I19-R120-10915-82503
record_format	dspace
institution	Universidad Nacional de La Plata
institution_str	I-19
repository_str	R-120
collection	SEDICI (UNLP)
language	Inglés
topic	Ciencias Astronómicas Stars: early-type Stars: emission-line, Be Stars: fundamental parameters
spellingShingle	Ciencias Astronómicas Stars: early-type Stars: emission-line, Be Stars: fundamental parameters Walborn, Nolan Revere Sota, Alfredo Maíz Apellániz, Jesús Alfaro, Emilio J. Morrell, Nidia Irene Barbá, Rodolfo Héctor Arias, Julia Inés Gamen, Roberto Claudio Early results from the galactic O-star spectroscopic survey: C III emission lines in of spectra
topic_facet	Ciencias Astronómicas Stars: early-type Stars: emission-line, Be Stars: fundamental parameters
description	On the basis of an extensive new spectroscopic survey of Galactic O stars, we introduce the Ofc category, which consists of normal spectra with C III λλ4647-4650-4652 emission lines of comparable intensity to those of the Of defining lines N III λλ4634-4640-4642. The former feature is strongly peaked to spectral type O5, at all luminosity classes, but preferentially in some associations or clusters and not others. The relationships of this phenomenon to the selective C III λ5696 emission throughout the normal Of domain, and to the peculiar, variable Of?p category, for which strong C III λλ4647-4650-4652 emission is a defining characteristic, are discussed. Magnetic fields have recently been detected on two members of the latter category. We also present two new extreme Of?p stars, NGC 1624-2 and CPD -28° 2561, bringing the number known in the Galaxy to five. Modeling of the behavior of these spectral features can be expected to better define the physical parameters of both normal and peculiar objects, as well as the atomic physics involved.
format	Articulo Articulo
author	Walborn, Nolan Revere Sota, Alfredo Maíz Apellániz, Jesús Alfaro, Emilio J. Morrell, Nidia Irene Barbá, Rodolfo Héctor Arias, Julia Inés Gamen, Roberto Claudio
author_facet	Walborn, Nolan Revere Sota, Alfredo Maíz Apellániz, Jesús Alfaro, Emilio J. Morrell, Nidia Irene Barbá, Rodolfo Héctor Arias, Julia Inés Gamen, Roberto Claudio
author_sort	Walborn, Nolan Revere
title	Early results from the galactic O-star spectroscopic survey: C III emission lines in of spectra
title_short	Early results from the galactic O-star spectroscopic survey: C III emission lines in of spectra
title_full	Early results from the galactic O-star spectroscopic survey: C III emission lines in of spectra
title_fullStr	Early results from the galactic O-star spectroscopic survey: C III emission lines in of spectra
title_full_unstemmed	Early results from the galactic O-star spectroscopic survey: C III emission lines in of spectra
title_sort	early results from the galactic o-star spectroscopic survey: c iii emission lines in of spectra
publishDate	2010
url	http://sedici.unlp.edu.ar/handle/10915/82503
work_keys_str_mv	AT walbornnolanrevere earlyresultsfromthegalacticostarspectroscopicsurveyciiiemissionlinesinofspectra AT sotaalfredo earlyresultsfromthegalacticostarspectroscopicsurveyciiiemissionlinesinofspectra AT maizapellanizjesus earlyresultsfromthegalacticostarspectroscopicsurveyciiiemissionlinesinofspectra AT alfaroemilioj earlyresultsfromthegalacticostarspectroscopicsurveyciiiemissionlinesinofspectra AT morrellnidiairene earlyresultsfromthegalacticostarspectroscopicsurveyciiiemissionlinesinofspectra AT barbarodolfohector earlyresultsfromthegalacticostarspectroscopicsurveyciiiemissionlinesinofspectra AT ariasjuliaines earlyresultsfromthegalacticostarspectroscopicsurveyciiiemissionlinesinofspectra AT gamenrobertoclaudio earlyresultsfromthegalacticostarspectroscopicsurveyciiiemissionlinesinofspectra
bdutipo_str	Repositorios
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Early results from the galactic O-star spectroscopic survey: C III emission lines in of spectra

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