M45 with star names labelled in the photograph, taken by David Malin with the UK Schmidt Telescope. Courtesy Anglo-Australian Observatory / Royal Observatory Edinburgh.
|eta = 25||Alcyone||2.86||B7e III||vdB 23 |
|27||Atlas||3.62||B8 III||Ced 190 |
|17||Electra||3.70||B6e III||vdB 20 |
|20||Maia||3.86||B7 III||NGC 1432 |
|23||Merope||4.17||B6 IV||NGC 1435 + IC 349|
|19||Taygeta||4.29||B6 V||Ced 19e |
|28 = BU||Pleione||5.09v||B8e p||Ced 19p |
|16||Celaeno||5.44||B7 IV||Ced 19c |
|21+22||Asterope||5.64; 6.41||B8e V; B9 V|
|18||5.65||B8 V |
|Sterope||5.76||B8 V||Ced 19h |
The star Maia (20 Tauri) was subject to speculation when Otto Struve brought up the hypothesis that it might be the representative of a new type of variables of spectral type B7-A3 near-main sequence stars, of some ours period and small amplitudes. However, various photometric investigations have proven that Maia (and other suspected "Maia Variables" such as Gamma UMa) is of constant brightness.
Another diffuse nebula, IC 353, is about 1 degree north following of the Pleiades, according to the Sky Catalog 2000. The present author has no information if this nebula is associated with the Pleiades or their nebulosity. Near the boundary of the Pleiades, but with no evidence for a connection, lies the diffuse nebula IC 1990, which surrounds the double star ADS 2799 (A: 5.9 m, B: 6.3 m, separation 0.4"), see e.g. Vehrenberg's Atlas of Deep Sky Splendors.
Last Modification: 2 Feb 1998, 14:40 MET