Plummer & Horn (2009)

1. AMNH SALT SCIENCEAshley Pagnotta (very old novae), Ben Oppenheimer (chemistry of hot Jupiter atmosphere), MS + Dave Zurek(Magellanic dwarf novae)AdricReidel (young red dwarfs)Jackie Faherty (brown dwarf rotations)June 6/2014

2. Pagnotta:Eventually, we will produce long term light curves for all known galactic classical novae, such as this one for V603 Aquilae. Our light curves will be anchored by modern magnitudes from SALT and other sources.

3. BV Cen is a U Gem/SS Cyg-type dwarf nova that has shown an increase in the time between its DN outbursts over the past half century, indicating a decrease in the accretion rate and possible nova eruption in its past. Plummer & Horn (2009)

4. We used SALTICAM on BV Cen to obtain a total of 30 minutes of integration time using the Hα filter to search for a nova shell; none present. BV Cen 2014-1-AMNH-002

5. Additionally, we continue our survey of modern magnitudes of post-nova systems, searching for evidence of secular change that may confirm or challenge the hibernation theory, for example with V604 Aquilae. g’ r’ B 2014-1-AMNH-003

6. Shara and ZurekDwarf Novae and Old Novae in the LMC – 9 epochs over 2 months u and g filters sdssu sdssg Note Gradients across images

7. ~40 IMAGES IN EACH FILTER ARE DITHERTEDCO-ADD IMAGES, BUTHIGH DATA VALUES (i.e. stars) REJECTED sdssu sdssg

8. FLATTENED, COSMIC-RAY CLEANED, COSMETICALLY CLEANED, ALIGNED, CO-ADDED IMAGESu ~g ~25… deep enough to detect quiescent cataclysmic variablesLarge amplitude blue variables seen between epochs

9. ~1% of the stars are very blue (u-g < 0)The most variable are cataclysmic binaries sdssu sdssu-g

10. Oppenheimer: Measurement of Wasp 43b Transit Spectrum • The hottest transiting exoplanet • Period = 19.52 hours • M =~ 2 x Jupiter R ~ R(Jupiter) semimajoraxis = 0.014 AU • Mstar = 0.58 Msun • Goal : Transmission spectrum of the planet’s atmosphere • INITIAL Method: {Star alone} - {Star minus Planet} =Planet • i.e. Primary transit spectrum minus secondary transit spectrum =PLANET ATMOSPHERE SPECTRUM • ULTIMATE GOAL: SPECTROPOLARIMETRY AROUND THE ORBIT • SALT RSS longslit pg0900 grating data on 1-15 and 2-06 of 2014 • in transit and out of transit 1200 seconds exposure • In process of reducing above data.

11. 1.15.14 22:49 27 28 34 33 32 31 30 29 1.15.14 22:14 Observations: 1 (300.2s) 22:42:23 - 22:47:23 5 (300.2s) 23:03:41 - 23:08:41 2 (300.2s) 22:47:43 - 22:52:43 6 (300.2s) 23:09:00 - 23:14:00 3 (300.2s) 22:53:02 - 22:58:02 7 (300.2s) 23:14:20 - 23:19:20 4 (300.2s) 22:58:21 - 23:03:21 8 (300.2s) 23:19:39 - 23:24:39

12. 2.06.14 21:57 13 12 15 14 2.06.14 21:22 Observations: 1 (300.2s) 21:42:51 - 21:47:51 2 (300.2s) 21:48:10 - 21:53:10 3 (300.2s) 21:53:30 - 21:58:30 4 (300.2s) 21:58:50 - 22:03:50

13. Un-calibrated Results Wasp 43 b in transit spectra Difference Spectrum Wasp 43b out of transit spectra

14. Next Steps • Apply instrument function to the data • Identify possible lines in the spectrum…NaI 5889 Angstroms • Or evidence of broadband scattering and cloud cover

15. Expect ~2-3 AMNH papers in the coming 6 months