TERRAPUB Earth, Planets and Space

Earth Planets Space, Vol. 63 (No. 10), pp. 1051-1065, 2011

AKARI All Sky Survey: contribution from AGB stars to the far infrared flux from the Milky Way related to point sources outside the Galactic plane

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)

Abstract: 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.

Corresponding author E-mail: apollo@fuw.edu.pl

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