dusty massive evolved stars in the nearby universe
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Dusty Massive Evolved Stars In the Nearby Universe
Stephen J. WilliamsNational Observatory of Athens
June 23, 2014 1
Collaborators
Alceste Bonanos (NOA)Nikolay Britavskiy (NOA)
Michalis Kourniotis (NOA)Jose Prieto (Princeton)Andrea Mehner (ESO)
William Blair (JHU)Brad Whitmore (STScI)
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SN2009ip
3Mauerhan et al. 2013LBV Variability
LBV Outbursts
4
Szcz
ygie
ł et a
l. 20
10
5Ekström et al. 2012
6
7
Bonanos et al. 2009
8
Khan et al. 2013
9
10Britavskiy et al. 2014
Conclusions, Work to Do
• Pan-STARRS1 – Variability to ID evolved massive stars– Bandpass diagnostics
• Spectroscopic follow-up• Census of objects across metallicity• SN progenitor groundwork
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References
• Mauerhan et al. 2013, MNRAS, 430, 1801• Szczygieł et al. 2010, AJ, 140, 14• Ekström et al. 2012, A&A, 537, 146• Bonanos et al. 2009, AJ, 138, 1003• Khan et al. 2013, ApJ, 767, 52• Britavskiy et al. 2014, A&A, 562, 75
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