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Population of AGB stars in the outer Galaxy

Published online by Cambridge University Press:  30 December 2019

Ryszard Szczerba ,
Ilknur Gezer ,
Bosco H. K. Yung  and
Marta Sewiło
Ryszard Szczerba
Affiliation:
Nicolaus Copernicus Astronomical Center, PAS, Rabiańska 8, 87-100 Toruń email: [email protected] Astronomical Observatory of the Jagiellonian University, Orla 171, 30-244 Kraków, Poland
Ilknur Gezer
Affiliation:
Nicolaus Copernicus Astronomical Center, PAS, Rabiańska 8, 87-100 Toruń email: [email protected] Astronomy and Space Science Department, Ege University, 35100 Bornova, Izmir, Turkey
Bosco H. K. Yung
Affiliation:
Nicolaus Copernicus Astronomical Center, PAS, Rabiańska 8, 87-100 Toruń email: [email protected] Astronomical Observatory of the Jagiellonian University, Orla 171, 30-244 Kraków, Poland
Marta Sewiło
Affiliation:
NASA Goddard Space Flight Center, 8800 Greenbelt Rd., Greenbelt, MD 20771, USA
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Abstract

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We present preliminary results of a study aimed at identifying and characterizing the Asymptotic Giant Branch (AGB) stars in the outer Galaxy using the color-color diagram (CCD) that combines the Spitzer Space Telescope and 2MASS photometry: Ks – [8.0] vs. Ks – [24]. Our initial study concentrates on a region in the outer Galactic plane around a galactic longitude l of 105°, where we identified 777 O-rich and 200 C-rich AGB star candidates.

Keywords

stars: AGB and post-AGBinfrared: starscatalogs
Type
Contributed Papers
Information
Proceedings of the International Astronomical Union , Volume 14 , Symposium S343: Why Galaxies Care About AGB Stars: A Continuing Challenge through Cosmic Time , August 2018 , pp. 508 - 509
Copyright
© International Astronomical Union 2019 

References

Matsuura, M., Bernard-Salas, J., Lloyd Evans, T., et al. 2014 MNRAS, 439, 1472 CrossRefGoogle Scholar
Szczerba, R., Bosco, H.K.Y., Sewiło, M., Siódmiak, N., & Karska, A. 2016, Journal of Physics: Conference Series, Volume 728, Issue 4, article id. 042004CrossRefGoogle Scholar
Steffen, M., Szczerba, R., & Schönberner, D. 1998, A&A, 337, 149 Google Scholar