The MACHO Project 9 Million Star Color-magnitude Diagram of the Large Magellanic Cloud
Alcock, Charles; Allsman, Robyn; Alves, David R; Axelrod, Tim; Basu, A.; Becker, Andrew C; Bennett, D P; Cook, Kem H; Drake, Andrew John; Freeman, Kenneth; Geha, M; Griest, K; King, Lynette J; Lehner, M J; Marshall, S L; Minniti, Dante; Nelson, C A; Peterson, Bruce; Popowski, P; Pratt, M; Quinn, Peter J; Stubbs, Christopher W; Sutherland, William J; Tomaney, A B; Vandehei, T; Welch, D L
We present a 9 million star color-magnitude diagram (9M CMD) of the Large Magellanic Cloud (LMC) bar. The 9M CMD reveals a complex superposition of different-age and -metallicity stellar populations, with important stellar evolutionary phases occurring over 3 orders of magnitude in number density. First, we count the nonvariable red and blue supergiants and the associated Cepheid variables and measure the stellar effective temperatures defining the Cepheid instability strip. Lifetime...[Show more]
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