Open cluster characterization via cross-correlation with a spectral library

We present a characterization method based on spectral cross-correlation to obtain the physical parameters of the controversial stellar aggregate ESO442-SC04. The data used was obtained with GMOS at the Gemini South telescope, and includes spectra of 17 stars in the central region of the object and...

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Guardado en:
Detalles Bibliográficos
Publicado: 2009
Materias:
Open clusters and associations: general
Open clusters and associations: individual (ESO 442-SC04)
Acceso en línea:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_17439213_v5_nS266_p458_Maia
http://hdl.handle.net/20.500.12110/paper_17439213_v5_nS266_p458_Maia
Aporte de:
Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires
id paper:paper_17439213_v5_nS266_p458_Maia
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spelling paper:paper_17439213_v5_nS266_p458_Maia2023-06-08T16:28:01Z Open cluster characterization via cross-correlation with a spectral library Open clusters and associations: general Open clusters and associations: individual (ESO 442-SC04) We present a characterization method based on spectral cross-correlation to obtain the physical parameters of the controversial stellar aggregate ESO442-SC04. The data used was obtained with GMOS at the Gemini South telescope, and includes spectra of 17 stars in the central region of the object and 6 standard stars. FXCOR was used iteratively to obtain self-consistent radial velocities for the standard stars and average radial velocities for the science spectra. Spectral types, effective temperatures, surface gravities and metallicities were determined using FXCOR to correlate cluster spectra with the ELODIE spectral library and select the best correlation matches using the Tonry & Davis ratio. Analysis of the results suggests that the stars in ESO442-SC04 are not bound and, therefore, they do not constitute a physical system. © International Astronomical Union 2010. 2009 https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_17439213_v5_nS266_p458_Maia http://hdl.handle.net/20.500.12110/paper_17439213_v5_nS266_p458_Maia
institution Universidad de Buenos Aires
institution_str I-28
repository_str R-134
collection Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA)
topic Open clusters and associations: general
Open clusters and associations: individual (ESO 442-SC04)
spellingShingle Open clusters and associations: general
Open clusters and associations: individual (ESO 442-SC04)
Open cluster characterization via cross-correlation with a spectral library
topic_facet Open clusters and associations: general
Open clusters and associations: individual (ESO 442-SC04)
description We present a characterization method based on spectral cross-correlation to obtain the physical parameters of the controversial stellar aggregate ESO442-SC04. The data used was obtained with GMOS at the Gemini South telescope, and includes spectra of 17 stars in the central region of the object and 6 standard stars. FXCOR was used iteratively to obtain self-consistent radial velocities for the standard stars and average radial velocities for the science spectra. Spectral types, effective temperatures, surface gravities and metallicities were determined using FXCOR to correlate cluster spectra with the ELODIE spectral library and select the best correlation matches using the Tonry & Davis ratio. Analysis of the results suggests that the stars in ESO442-SC04 are not bound and, therefore, they do not constitute a physical system. © International Astronomical Union 2010.
title Open cluster characterization via cross-correlation with a spectral library
title_short Open cluster characterization via cross-correlation with a spectral library
title_full Open cluster characterization via cross-correlation with a spectral library
title_fullStr Open cluster characterization via cross-correlation with a spectral library
title_full_unstemmed Open cluster characterization via cross-correlation with a spectral library
title_sort open cluster characterization via cross-correlation with a spectral library
publishDate 2009
url https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_17439213_v5_nS266_p458_Maia
http://hdl.handle.net/20.500.12110/paper_17439213_v5_nS266_p458_Maia
_version_ 1768544932063084544

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