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1 st results from cross-matching with X-ray data

1 st results from cross-matching with X-ray data. George Seabroke. Talk Outline. Travel money acknowledgement Why X-match RAVE with X-ray data? X-ray-optical X-match literature review Who’s actually X-matching RAVE with X-ray data? X-match Results Conclusions.

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1 st results from cross-matching with X-ray data

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  1. 1st results from cross-matching with X-ray data George Seabroke

  2. Talk Outline • Travel money acknowledgement • Why X-match RAVE with X-ray data? • X-ray-optical X-match literature review • Who’s actually X-matching RAVE with X-ray data? • X-match Results • Conclusions

  3. The Open University • Department of Physics & Astronomy • Planetary & Space Sciences Research Institute • Department of Earth & Environmental Sciences

  4. The Open University • Department of Physics & Astronomy • Planetary & Space Sciences Research Institute CEPSAR Interdisciplinary Project (£1000!) • Department of Earth & Environmental Sciences

  5. The Open University • Department of Physics & Astronomy • Academics: • Ulrich Kolb • Andrew Norton Postdoc: Robin Barnard • Planetary & Space Sciences Research Institute • Academics: • Andrew Holland • Postdoc: • George Seabroke CEPSAR Interdisciplinary Project (£1000!)

  6. Why cross-match RAVE with X-ray data? • Physics of stellar X-ray emission not understood but linked to stellar properties • Stellar X-ray activity identifies interesting, rare stars • Cataclysmic variables • White dwarfs etc • Stellar X-ray activity identifies youngest stars • Currently no RAVE stellar age diagnostic • Probes large-scale distribution of young stars • Moving groups • Gould disc

  7. Guillout et al. (1998)

  8. X-ray-optical X-match literature review • Guillout et al. (1999) X-matched ROSAT All-Sky Survey (RASS, pre-release: 150,000) with: • Hipparcos (6200 out of 118,200 = 5.25%) • Tycho (13,875 out of 106 = 1.39%) • Agueros et al. (2009) X-matched RASS (public release: 125,000) with • SDSS DR1 (709 out of 53 million = 0.001%)

  9. Who’s actually cross-matching RAVE with X-ray data? Duncan Fyfe (Leicester) Helped write XMM-Newton data reduction pipeline i.e X-ray expert!

  10. X-match Results

  11. Conclusions • Deadline for next CEPSAR Interdisciplinary Projects (for £1000 again) Wed 17th June • In addition to asking for travel £ for next RAVE meeting based on continuing OU X-ray collaboration, shall I aslo include investigation of RAVE CCD upgrade to e2v HiRho CCD? • XRAVE catalogue plans • X-match RAVE with Chandra serendipitous catalogue as well • Validate X-match quality • Use most accurate distances (Breddels et al. 2009 using stellar models vs Klement et al. 2008 using Tycho-2 B & V?) to calculate X-ray luminosity • Make internal X-match available internally to collaboration? • Make DR3 X-match publically available via VizieR & publicize with paper inc 1st X-ray RAVE science (TBD: LMC & SMC X-ray sources)?

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