RR Lyrae Stars for SIM

1
RR Lyrae Stars for SIM

• I. A- and B-Lists
• II. Obtaining Apparent Mags
• (a) Field and (b) Cluster

2
A- B-Lists

• A-List (60 RRL)
• B-List (42 RRL)
• C-List (37 RRL) x
• Seek low E(B-V)
• Fe/H extremes
• Fe/H gt -0.6
• Fe/H lt -2.0
• Disk/halo
• Fe/H -1.0
• OoI/II
• Fe/H gt -1.6
• Still evolving

3
BVIK light curves of Field RRL

• (1) North (Dec gt -20)
• 2000-2004
• Obtaining VI with BGSU 0.5mCCD
• Completed most stars w/ 13h lt RA lt 24h (50
  stars)
• Dome motor failed Aug
• Oct WIYN 0.9m calibrated 24 more fields
• Total now 49
• Secure 3 visits on 2 different nights
• 2005
• Continue BGSU observations
• 1-2 more WIYN 0.9m calibration runs

4
BGSU 0.5mCCD
5
BVIK light curves of Field RRL

• (2) South (Dec lt -10)
• 2004
• Obtaining IK with SMARTS 1.3m AndiCam (queue)
• Completed 37 stars w/ 10h lt RA lt 24h
• Expect 9 more
• Summer
• Worked out I calibration scheme tested
• Processed photometered 2004A K data
• 2005
• Calibrate I data plot light curves
• Process photometer K data plot LCs
• Write paper
• mean mags color detection of companions

6
SMARTS 1.3mAndiCam
7
Question

• How will we
• Title our papers?
• E.g., Anchoring the Population II Distance Scale
  with SIM. IV. Light Curves of Field RR Lyrae
  Variables.
• Assign Author List?
• MACHO model?
• Contributors only?
• Contributors in order of contribution,
  non-contributors last?

8
BVIK light curves of Field RRL

• (3) Literature
• 2004
• Students typed in UBV(I) data for 24 stars
• Sturch (1966)
• Fitch, Wisniewski, Johnson (1966)
• Look for systematic offsets
• Combine to obtain better phase coverage
• 2005
• Continue (all 120 stars)
• Check for systematic offsets with our data

9
BVIK LCs of Cluster RRL

• 2004
• Students photometer RRL in 2 clusters
• NGC 104 I, 1 RRL
• NGC 362 BVI, 7 RRL
• Calibrating to Stetson secondary standards.
• 2005
• Acquire more BVI on both (CTIO 0.9m)
• Publish 2 papers
• mean mags color detection of companions
• Begin work on existing images of w Cen
• Apply for 1.3mAndiCam BVIK of M30

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Summary

• 2004
• VI photom of Northern field RRL
• IK photom of 40-50 Southern field RRL
• Literature UBVI data acquisition for field RRL
• BVI photom of RRL in NGC 104 NGC 362
• 2005
• Continue 1-4 above
• Publish 3 papers (2, 2x4)
• Begin photom of RRL in w Cen
• Apply for SMARTS 1.3m time M30 RRL