Articles liés à Study of emission-line stars in young open clusters:...

Study of emission-line stars in young open clusters: A spectroscopic survey to search for Classical Be stars in young open clusters - Couverture souple

Mathew, Blesson

 
9783843354875: Study of emission-line stars in young open clusters: A spectroscopic survey to search for Classical Be stars in young open clusters
Couverture souple
ISBN 10 : 3843354871 ISBN 13 : 9783843354875
Editeur : LAP LAMBERT Academic Publishing, 2010

Synopsis

Emission-line stars in young open clusters are identified to study their properties, as a function of age, spectral type and evolutionary state. 207 open star clusters were observed using slitless spectroscopy and 157 Be stars were identified in 42 clusters. We found 54 new Be stars in 24 open clusters, of which 19 clusters are found to house Be stars for the first time. The Classical Be stars are located all along the main sequence in the optical colour magnitude diagram of clusters of all ages. A spectroscopic study of 152 Classical Be stars in 42 young open clusters were performed using medium resolution spectra in 3800 - 9000 Å range, to understand the Be phenomenon. Stars in the B0 - B2 spectral bin are found be evolved to Be phase while others are born as Be stars. From optical/near-IR photometry and spectroscopy, we identified 3 Herbig Be and 2 Herbig Ae candidates. The star formation history of the hosting cluster were estimated by identifying pre-main sequence stars.

Les informations fournies dans la section « Synopsis » peuvent faire référence à une autre édition de ce titre.

Présentation de l'éditeur

Emission-line stars in young open clusters are identified to study their properties, as a function of age, spectral type and evolutionary state. 207 open star clusters were observed using slitless spectroscopy and 157 Be stars were identified in 42 clusters. We found 54 new Be stars in 24 open clusters, of which 19 clusters are found to house Be stars for the first time. The Classical Be stars are located all along the main sequence in the optical colour magnitude diagram of clusters of all ages. A spectroscopic study of 152 Classical Be stars in 42 young open clusters were performed using medium resolution spectra in 3800 - 9000 Å range, to understand the Be phenomenon. Stars in the B0 - B2 spectral bin are found be evolved to Be phase while others are born as Be stars. From optical/near-IR photometry and spectroscopy, we identified 3 Herbig Be and 2 Herbig Ae candidates. The star formation history of the hosting cluster were estimated by identifying pre-main sequence stars.

Biographie de l'auteur

I am an astronomer interested in optical and IR spectroscopy. I did PhD from Indian Institute of Astrophysics on Be stars in open clusters. Now post-doctoral fellow in Physical Research laboratory, working on IR spectroscopy of Be stars. I also work on pre-main sequence stars and interested in high mass star formation.

Les informations fournies dans la section « A propos du livre » peuvent faire référence à une autre édition de ce titre.

Éditeur
LAP LAMBERT Academic Publishing
Date d'édition
2010
Langue
anglais
ISBN 10 
3843354871
ISBN 13 
9783843354875
Reliure
Broché
Nombre de pages
272
Coordonnées du fabricant
non disponible
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