ICATE 21876
INSTITUTO DE CIENCIAS ASTRONOMICAS, DE LA TIERRA Y DEL ESPACIO
Unidad Ejecutora - UE
artículos
Título:
Spectral morphology and rotation in the open cluster NGC 6025
Autor/es:
GROSSO, M; LEVATO H.
Revista:
REVISTA MEXICANA DE ASTRONOMÃA Y ASTROFÃSICA
Editorial:
UNIV NACIONAL AUTONOMA MEXICO
Referencias:
Lugar: México; Año: 2011 vol. 47 p. 255 - 259
ISSN:
0185-1101
Resumen:
We have performed spectral classification and measurements of the axial rotation velocity for the brightest stars in the region of the open cluster NGC 6025. A distance modulus of 9.80±0.06 (pe) and an age of 84 million years were derived. The brightest star of the cluster, HD 143448 was classified as B1Ve and it is a blue straggler as proposed by other authors (see Mermilliod 1982). We found three peculiar stars (two Si and one Hg-Mn?). Another star in the field shows emission but is probably a non-member. We also found two SB2 binaries. The average axial rotation for the cluster members seems to be 73% of the average rotation of the field stars with the same temperature.
