The Cluster NGC 330 in the SMC (Paper II): H Emission in Main Sequence Stars
Open Access
- 1 August 1972
- journal article
- Published by Oxford University Press (OUP) in Monthly Notices of the Royal Astronomical Society
- Vol. 159 (2) , 113-118
- https://doi.org/10.1093/mnras/159.2.113
Abstract
An H α survey of the cluster NGC 330 in the Small Magellanic Cloud has been carried out. Eighteen stars which are main sequence objects, according to Arp's photometry, were observed and ten found to be Be stars. Three other stars without photometry are probably Be stars. All eight main sequence stars investigated with Mv in the range – 3·6 to – 4·2 are Be stars. This latter result is closely similar to Schild's result for the extreme nucleus of the χ Per cluster. The significance of these results is discussed. The position of the main sequence of NGC 330 in the colour–magnitude diagram probably requires significant correction for the effects of large stellar rotational velocities before a comparison can be made with a main sequence of non-rotating stars.Keywords
This publication has 0 references indexed in Scilit: