YY Gem Individual Light Curves
(Not Including Those During the 10-Day Intensive Monitoring)


After 3.2 years this primary transit was "on time" (i.e., 1.26 0.22 minutes early, using the ephemeris adopted in 2013; the last primary transit was also 1.2 minutes early, on 2012.12.12). The depth is also the same (530.0 2.3 vs. 528.7 1.7 mmag on 2012.12.12). However, the starspots seem to have changed because the OOT slope is different from 3.2 years ago.



oot


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oot Disregard the "pyramid shaped" feature at 9.7 hrs; it's due to reflections within the telescope (possibly caused by the nearby moon).


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sap

______________________________________________________ 2012.02.11 - Gary- i' ____________________________________________________

sap


______________________________________________________ 2011.12.29 - Gary- g' ____________________________________________________

spo


oot AMC = -6.2 mmag/airmass (v2622)


oot AMC = -5.0 mmag/airmass (v2625)


oot AMC = -3.8 mmag/airmass (v2628)

Based on above g'r'i'z' LCs.

______________________________________________________ 2011.12.28 - Gregorio - Vs ____________________________________________________

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______________________________________________________ 2011.12.27 - Gregorio - Ic ____________________________________________________

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______________________________________________________ 2011.12.27 - Srdoc - Rs _____________________________________________________

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______________________________________________________ 2011.12.26 - Cindy Foote - Ic _________________________________________________

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______________________________________________________ 2011.12.26 - Cindy Foote - Ic _________________________________________________

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______________________________________________________ 2011.12.26 - Gary - Ic ___________________________________________________

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______________________________________________________ 2011.12.23/24 - Srdoc - R+ ____________________________________________________

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______________________________________________________ 2011.12.23 - Garlitz - R ____________________________________________________

spo Notice the orbital OOT variation, with brightness peaking near primary transit (consistent with other LCs).

____________________________________________________ 2011.10.28 - Gary - B,V,Rc,Ic,z' ____________________________________________

oot AMC = -7.5 mmag/airmass.


spo Primary transit


spo Primary transit.


spo Primary transit


spo Primary tranist
____________________________________________________ 2011.10.28 - Cindy Foote - B,V,Rc,Ic _____________________________________________



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____________________________________________________ 2011.10.24 - Gary - B,V,Rc,Ic _____________________________________________


Notice the small amplitude sinusoidal variation before secondary transit.



A similar amplitude sinusoidal variation.



A smaller amplitude sinusoidal variation.


spo Essentially no sinusoidal variation.
_____________________________________________ 2011.10.24 Gary & FooteJ & FooteC ______________________________________________

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_________________________________________________ 2011.10.20 Gary & FooteJ ___________________________________________________


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WebMaster: B. Gary.  This site opened:  2011.10.20 Last Update:  2013.02.06