Earth Planets Space, Vol. 63 (No. 10), pp. 1051-1065, 2011
Agnieszka Pollo1,2,3, Tsutomu T. Takeuchi4,5, and Piotr Rybka2,5
1The Andrzej Sołtan Institute for Nuclear Studies, ul. Hoża 69, 00-681 Warszawa, Poland
2Astronomical Observatory of the Jagiellonian University, ul. Orla 171, 30-244 Kraków, Poland
3Center for Theoretical Physics PAS, Al. Lotników 32/46, 02-668 Warszawa, Poland
4Institute for Advanced Research, Nagoya University, Furo-cho, Chikusa-ku, Nagoya 464-8601, Japan
5Division of Particle and Astrophysical Science, Nagoya University, Furo-cho, Chikusa-ku, Nagoya 464-8602, Japan
(Received September 14, 2010; Revised April 13, 2011; Accepted April 15, 2011; Online published February 2, 2012)
Using data from the FIS AKARI All-Sky Survey, we make a first step towards the estimation of the contribution from Asymptotic Giant Branch (AGB) stars to the far-infrared (FIR) flux from the Milky Way. We estimate the contribution from the AGB, and post-AGB, stars to the total flux generated by point sources outside the Galactic plane. Additionally, we present the positions of different types of AGB, and post-AGB, stars in the FIR color-color diagrams. Our main conclusion is that there is a high contribution from AGB stars, and particularly post-AGB stars, to the FIR flux coming from point sources in the outer parts of the Milky Way and possibly other Milky Way-type galaxies. FIR colors of different types of AGB stars remain similar but post-AGB stars are redder in the FIR and, as a result, contribute more to the total Galaxy flux density at longer FIR wavelengths.
Key words: Dust, AGB stars, post-AGB stars, far-infrared, all-sky surveys.