dusty massive evolved stars in the nearby universe
DESCRIPTION
Dusty Massive Evolved Stars In the Nearby Universe. Stephen J. Williams National Observatory of Athens June 23, 2014. Collaborators. Alceste Bonanos (NOA) Nikolay Britavskiy (NOA) Michalis Kourniotis (NOA) Jose Prieto (Princeton) Andrea Mehner (ESO) William Blair (JHU) - PowerPoint PPT PresentationTRANSCRIPT
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)
2
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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