Systematics-insensitive periodic signal search with K2

My talk at the Emerging Researchers in Exoplanet Science Symposium.

Transcript

1. RUTH ANGUS, DAN FOREMAN-MACKEY & JOHN JOHNSON ruthangus@astro.ox.ac.uk // @ruthangus // ruthang.us  // github.com/ruthangus THE SYSTEMATICS- INSENSITIVE PERIODOGRAM for   K2 DATA  
2. @ruthangus
3. Foreman-Mackey et al. (2015) K2 ‘EIGEN LIGHT CURVES’ @ruthangus
4. + = @ruthangus
5. Montet et al. (2015) @ruthangus
6. + @ruthangus
7. + @ruthangus
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9. 1. ASTEROSEISMOLOGY @ruthangus
10. 0.0 0.2 0.4 0.6 0.8 1.0 0.0 0.2 0.4 0.6 0.8 1.0 EPIC 201183188 50 100 150 200 250 0.002 0.004 0.006 0.008 0.010 0.012 0.014 Power 50 100 150 200 250 0.002 0.004 0.006 0.008 0.010 0.012 0.014 Power 50 100 150 200 250 ⌫ (µHz) 0.0 0.5 1.0 1.5 2.0 2.5 3.0 Relative (S/N)2 ( ⇥ 10 4) DETRENDED SIP RAW @ruthangus
11. 50 100 150 200 250 ⌫ (µHz) 0.0 0.5 1.0 1.5 2.0 2.5 S/N ( ⇥ 10 4) EPIC 201545182 50 100 150 200 250 ⌫ (µHz) 0.0 0.2 0.4 0.6 0.8 1.0 1.2 S/N ( ⇥ 10 4) EPIC 201433687 50 100 150 200 250 ⌫ (µHz) 0.0 0.5 1.0 1.5 2.0 2.5 S/N ( ⇥ 10 4) EPIC 201444854 50 100 150 200 250 ⌫ (µHz) 0.00 0.02 0.04 0.06 0.08 0.10 S/N ( ⇥ 10 ) EPIC 201607835 @ruthangus 50 100 150 200 250 ⌫ (µHz) 0.0 0.5 1.0 1.5 2.0 2.5 3.0 S/N ( ⇥ 10 4) EPIC 201183188 50 100 150 200 250 ⌫ (µHz) 0.00 0.02 0.04 0.06 0.08 0.10 0.12 0.14 0.16 S/N ( ⇥ 10 4) EPIC 201211472
12. 2. ROTATION @ruthangus
13. 1980 1990 2000 2010 2020 2030 2040 2050 BJD 2454833 (days) 0.003 0.002 0.001 0.000 0.001 0.002 0.003 0.004 0.005 0.006 Normalized Flux EPIC 201142023 0 10 20 30 40 50 60 Time (days) 0.4 0.2 0.0 0.2 0.4 0.6 0.8 1.0 Autocorrelation Prot = 3.35 10 20 30 40 50 60 Period (days) 0.0 0.1 0.2 0.3 0.4 0.5 Power Pmax = 59.26 @ruthangus
14. 1980 1990 2000 2010 2020 2030 2040 2050 BJD 2454833 (days) 211000 211500 212000 212500 213000 213500 214000 214500 Relative Flux EPIC 201142023 101 102 Period (days) 0.0 0.1 0.2 0.3 0.4 0.5 0.6 Relative (S/N2) ( ⇥ 104) Pmax = 2.09 days @ruthangus
15. 3. EXOPLANETS @ruthangus
16. 1980 1982 1984 1986 1988 1990 1992 1994 BJD (days) 2454833 0.010 0.005 0.000 0.005 0.010 Normalized Flux EPIC 201637175 5 10 15 20 Period (hours) 0.0000 0.0002 0.0004 0.0006 0.0008 0.0010 0.0012 Relative (S/N)2 Pmax = 9.15 hours EXOPLANETS @ruthangus
17. 1980 1982 1984 1986 1988 1990 1992 1994 BJD (days) 2454833 0.6 0.4 0.2 0.0 0.2 0.4 0.6 0.8 1.0 Normalized Flux EPIC 201339783 5 10 15 20 Period (hours) 0 20 40 60 80 100 120 140 160 Relative (S/N)2 Pmax = 12.74 hours RR LYRAE @ruthangus
18. 1980 1982 1984 1986 1988 1990 1992 1994 BJD (days) 2454833 0.5 0.4 0.3 0.2 0.1 0.0 0.1 0.2 0.3 Normalized Flux EPIC 201473612 5 10 15 20 Period (hours) 0 2 4 6 8 10 12 14 16 Relative (S/N)2 Pmax = 16.45 hours EBs @ruthangus
19. @ruthangus github.com/RuthAngus/SIPK2
20. @ruthangus
21. @ruthangus
22. ArXiv: 1505.07105 Code: github.com/RuthAngus/SIPK2
23. ArXiv: 1505.07105 Code: github.com/RuthAngus/SIPK2 GIANT ASTEROSEISMOLOGY STELLAR ROTATION VARIABLE STARS EBs & OTHER EXOPLANETS
24. RUTH ANGUS, DAN FOREMAN-MACKEY & JOHN JOHNSON ruthangus@astro.ox.ac.uk // @ruthangus // ruthang.us  // github.com/ruthangus THE SYSTEMATICS- INSENSITIVE PERIODOGRAM for   K2 DATA