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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. - PowerPoint PPT Presentation
Citation preview
1st 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
Department of Physics & AstronomyDepartment of Physics & Astronomy Planetary & Space Sciences Research InstitutePlanetary & Space Sciences Research Institute
The Open University
Department of Earth & Environmental SciencesDepartment of Earth & Environmental Sciences
Department of Physics & AstronomyDepartment of Physics & Astronomy Planetary & Space Sciences Research InstitutePlanetary & Space Sciences Research Institute
The Open University
Department of Earth & Environmental SciencesDepartment of Earth & Environmental Sciences
CEPSAR Interdisciplinary
Project(£1000!)
Department of Physics & AstronomyDepartment of Physics & Astronomy
Academics: Academics:
•Ulrich KolbUlrich Kolb
•Andrew Norton Andrew Norton Postdoc:Postdoc: Robin Barnard Robin Barnard
Planetary & Space Sciences Research InstitutePlanetary & Space Sciences Research Institute
Academics: Academics: • Andrew HollandAndrew Holland
Postdoc:Postdoc:• George SeabrokeGeorge Seabroke
The Open University
CEPSAR Interdisciplinary
Project(£1000!)
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
•
Guillout et al. (1998)
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%)
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!
X-match Results X-ray catalogue Reference Search
radius (arcsec)
No of RAVE stars
No of X-ray sources
%
2nd XMM Serendipitous Survey
Watson et al. (2009) 5 269 191,870 0.14
XMM Slew Survey Saxton et al. (2008) 5 73 4710 1.55
ROSAT Faint Source Catalogue
Voges et al. (2000) 50 1215 105,924 1.15
ROSAT Bright Source Catalogue
Voges et al. (1999) 50 647 18,806 3.44
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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