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Developments at Palomar

Developments at Palomar. S. R. Kulkarni California Institute of Technology. Telescopes at Palomar. Zwicky’s 18-inch (not in use) Hale 200-inch Oschin 48-inch Schmidt 60-inch 20-inch dome: 99-mm copy of STARE (Charbonneau) 24-inch telescope (Mike Brown; Fall).

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Developments at Palomar

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  1. Developments at Palomar S. R. Kulkarni California Institute of Technology

  2. Telescopes at Palomar • Zwicky’s 18-inch (not in use) • Hale 200-inch • Oschin 48-inch Schmidt • 60-inch • 20-inch dome: 99-mm copy of STARE (Charbonneau) • 24-inch telescope (Mike Brown; Fall)

  3. P200: Large Format Camera • Six 2K by 4K Site thinned CCDs • Prime focus with Wynne corrector • FOV = 25 by 24 arcmin built by M. Metzger

  4. P200: Wide Field IR Camera • Prime Focus NIR camera • 2K by 2K Hawaii-II • FOV = 8.7 arcmin by 8.7 arcmin led by S. Eikneberry, Cornell

  5. Pharo + AO • 1K by 1K Hawaii • 0.040 or 0.025 arcsec/pixel • Grism (spectral resolution of 1500) • Coronagraphic stop • Guide star V=11 in reasonable seeing; can push to V=13.5 in good seeing led by R. Dekany (JPL), T.Hayward(Cornell)

  6. QUEST • 112 CCDs, 600 by 2400 pixels • FOV = 4.6 deg by 3.6 deg (10 sq degree effective area) • Drift scan or Point & Shoot led by C. Baltay (Yale)

  7. Projects with Quest • Yale-Indiana, 40% of time Quasar variability survey Intermediate redshift SN • JPL, 40% of time Near-earth asteroids • Caltech, 20% of time KBOs (Quahar and Plutos) High redshift quasars

  8. P60: Dedicated for Transient Object Astronomy • Telescope now fully automated • New CCD detector (Harrison) • Software pipeline (Fox and IPAC) led by S. Kulkarni & F. Harrison

  9. P60 now in routine operation • 20% of time for Caltech community (non TOO observations; que scheduled) • 10% of time for IPAC (non TOO observations; que scheduled) • 70% of time for GRB project => Launch of Swift (September 2004)

  10. Sleuth (Stare): Planet Search • Sleuth is patterned after T. Brown’s successful Stare project (HD 209458 fame) • In routine operation • Many false positives being detected (10 mag) led by D. Charbonneau

  11. Palomar Testbed Interferometer • 100-m baseline, 40-cm siderostats • H, K bands • Highlights: M dwarf diameter determination Pulsations of Cepheid variable Herbig Ae/Be star

  12. Distance to Pleiades via AtlasX-P Pan, M. Shao & S. Kulkarni(Nature, negotiating with Editor) • Pleiades is a gold standard for intermediate mass stars, brown dwarfs and Cepheid distance scale • Hipparcos team published distance to Pleiades D = 118 +/- 4 pc • Traditional distance (color-mag diagram) D = 131 +/- 3 pc Hipparcos result generated “lively” controversy.

  13. Orbit of Atlas (Mark III & PTI) P(orbit)= 291day a = 13 mas e = 0.245 Inclination=108d

  14. Distance via Kepler’s 3rd law A3 = d3 a3= (m1+m2)P2

  15. Search for Planets in Binary Stars • Lane and Mutterspaugh have demonstrated very narrow angle astrometry with PTI (fringe scanning) • We are starting a 3-yr survey to search astrometrically for planets in speckle binaries • Konacki has successfully achieved 10 m/s RV for binary stars with HIRES

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