TY - GEN
T1 - On the pulsation modes and masses of RGB OSARGs
AU - Takayama, M.
AU - Saio, H.
AU - Ita, Y.
PY - 2013
Y1 - 2013
N2 - OSARG (OGLE Small Amplitude Red Giants) variables are RGB or AGB stars that show multi-periodic light variations with periods of about 10-100 days. Comparing linear nonadiabatic pulsation periods and period ratios with observed ones, we determined pulsation modes and masses of the RGB OSARG variables in the LMC. We found that pulsations of OSARGs involve radial 1st to 3rd overtones, p4 of l = 1, and p2 of l = 2 modes. The range of mass isfound to be 0.9-1.4M⊙ for RGB OSARGs and their mass-luminosity relation is logL/L⊙ = 0.79 M/M⊙ + 2.2.
AB - OSARG (OGLE Small Amplitude Red Giants) variables are RGB or AGB stars that show multi-periodic light variations with periods of about 10-100 days. Comparing linear nonadiabatic pulsation periods and period ratios with observed ones, we determined pulsation modes and masses of the RGB OSARG variables in the LMC. We found that pulsations of OSARGs involve radial 1st to 3rd overtones, p4 of l = 1, and p2 of l = 2 modes. The range of mass isfound to be 0.9-1.4M⊙ for RGB OSARGs and their mass-luminosity relation is logL/L⊙ = 0.79 M/M⊙ + 2.2.
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U2 - 10.1051/epjconf/20134303013
DO - 10.1051/epjconf/20134303013
M3 - Conference contribution
AN - SCOPUS:84875675801
SN - 9782759809691
T3 - EPJ Web of Conferences
BT - 40th Liege International Astrophysical Colloquium. Ageing Low Mass Stars
T2 - 40th Liege International Astrophysical Colloquium. Ageing Low Mass Stars: From Red Giants to White Dwarfs, LIAC 2012
Y2 - 9 July 2012 through 13 July 2012
ER -