1. 3-D Morphology of V723 Cas Nova Ejecta KeckII+LGSAO+OSIRIS
Randy Campbell and Jim Lyke
V723 Cas
[CaVIII] µm
Hα images from Classical Novae, ed. Bode and Evans, Ch 12, O’Brien and Bode

2. OSIRIS: Integral Field Spectrometer
vr (km/sec)
λ (μm)
0.1”
[CaVIII] µm
2007 Sep 3
R. D. Campbell and J. E. Lyke

3. Stepping Through Velocity Channels
0.1”
Vr (km/sec)
[CaVIII] µm
2007 Sep 3
λ µm
R. D. Campbell and J. E. Lyke

4. Stepping Through Velocity Channels
0.1”
Vr (km/sec)
0.1”
[CaVIII] µm
2007 Sep 3
λ µm
R. D. Campbell and J. E. Lyke

5. 3-D Volume Display 27° Position Angle Rotation [CaVIII] 2.3214 µm
2007 Sep 3
27°
R. D. Campbell and J. E. Lyke

6. 3-D Volume Display 62° Viewing Inclination Angle Cube Dimensions:
3300 AU / side
Viewing Inclination
Angle
(dashed cube lines are background)
R. D. Campbell and J. E. Lyke

7. 3-D Volume Display 27° Position Angle Rotation [CaVIII] 2.3214 µm
2007 Sep 3
27°
R. D. Campbell and J. E. Lyke

8. 3-D Volume Display -28° Viewing Inclination Angle Cube Dimensions:
3300 AU / side
R. D. Campbell and J. E. Lyke

9. Comparison of [Ca VIII] and [Al IX]
Cube Dimensions: 3300 AU / side
[CaVIII] µm
2007 Sep 3
[Al IX] µm
2007 Sep 3
R. D. Campbell and J. E. Lyke

10. Conclusions Integral field spectroscopy + LGSAO yields:
High spatial resolution tuned to coronal emission features
Distance determination: 3.85 ± 0.23 kpc
Direct measure of the inclination: 62 ± 1.5°
Study of the 3-D morphology of V723 Cas ejecta
Detection of inhomogeneous shell
Equatorial torus with polar globules in [Ca VIII] and most other emission features
Prolate spheroid in [Al IX]
Structure of [Si VI] vs. [Al IX] vs. Br gamma is different
OSIRIS with Keck LGSAO gives an unprecedented capability for nova study
high spatial resolution
Well suited spectral resolution
help reveal the physics inside
Coronal lines exist in the ejecta
Inhomogeneity: Density / temperature /radiaton/ Ionization/ optical depth?
well defined ring
Influence of binary
R. D. Campbell and J. E. Lyke

11. Cube Dimensions: 3300 AU / side
Thank You
Cube Dimensions: 3300 AU / side
[CaVIII] µm
2007 Sep 3
[Al IX] µm
2007 Sep 3
R. D. Campbell and J. E. Lyke

12. Backups
R. D. Campbell and J. E. Lyke

13. 1D spectra
R. D. Campbell and J. E. Lyke

14. Continuum Subtraction
2.3”
1.8”
Interested in emission features
Remove continuum
Sample continuum outside of features, extrapolate through features.
Next: no contiuum, toggle back and forth
R. D. Campbell and J. E. Lyke

15. Continuum Subtraction
2.3”
1.8”
Next : isolating individual features
R. D. Campbell and J. E. Lyke

16. Mosaic of Edge-On Views
R. D. Campbell and J. E. Lyke

17. Mosaic of Face-On Views
R. D. Campbell and J. E. Lyke

18. 2D Spectra 2006 [Si VI] [Al IX] Br [Ti VII] unk
R. D. Campbell and J. E. Lyke

19. Very slow multi-peak photometric development
V723 Cassiopeiae
Very slow multi-peak photometric development
Evans, et al., 2003, AJ, 126, 1981, Figure 1
Brightened for ~100 days before max.
Decline took 100s of days
Many novae km/s lines up to ~5000 km/s
NIRSPEC spectra from August 2004
7 years before these observations—H and CO nb filters
Longest orbital period of classical novae, likely a low mass WD with an evolved secondary
We may want backup slides on 723 cas, light curves, spectral evolution, other info since some of the questions are likely to be on the nature of this object.
We deemed the target a worthy challenge for OSIRIS and LGSAO on Keck II
R. D. Campbell and J. E. Lyke

20. OSIRIS Overview – P.I., James Larkin
Fixed grating, lenslet array IFU
R=3800
ZJHK (1-2.5 mm)
4 spatial scales: 20 mas, 35 mas, 50 mas, 100 mas
Detector
Lenslet Array
Collimator Optics
Grating
Camera Optics
Focal Plane
Pupil Plane AO
Focus
Cold
Pupil
Filters
R. I. Collimating
Singlet
R.I. Camera
Reimaging Optics
Lenslet
Spectrograph
Light from
telescope
3 parts: Re-imaging optics, lenslet, spectrograph
Only the re-imaging optics and filters move.
88 Combinations of spatial and spectral coverage.
R. D. Campbell and J. E. Lyke