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AGB and post-AGB objects in the outer Galaxy

  • Ryszard Szczerba (a1), Bosco H. K. Yung (a1), Marta Sewiło (a2) (a3), Natasza Siódmiak (a1) and Agata Karska (a4)...

Abstract

We present the results of our search for low- and intermediate mass evolved stars in the outer Galaxy using AllWISE catalogue photometry. We show that the [3.4]−[12] vs. [4.6]−[22] colour-colour diagram is most suitable for separating C-rich/O-rich AGB and post-AGB star candidates. We are able to select 2,510 AGB and 24,821 post-AGB star candidates. However, the latter are severely mixed with the known young stellar objects in this diagram.

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References

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Matsuura, M., Bernard-Salas, J., & Evans, T. L., et al. 2014, MNRAS, 439 1472
Ruffle, P. M. E., Kemper, F., & Jones, O. C., et al. 2015, MNRAS, 451, 3504
Szczerba, R., Siódmiak, N., Stasińska, , et al. 2007 Astronomy & Astrophysics, 378, 465
Szczerba, R., Siódmiak, N., Stasińska, G., et al. 2012 Proceedings of the International Astronomical Union, IAU Symposium, Volume 283, 506
Szczerba, R., Siódmiak, N., & Leśniewska, A., et al. 2016, Journal of Physics: Conference Series, Volume 728, article id. 042004
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Woods, P. M., Oliveira, J. M., & Kemper, F., et al. 2016, MNRAS, 411, 1597
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