LONEOS RR Lyrae Survey: Early Results

Details LONEOS RR Lyrae Survey: Early Results LONEOS RR Lyrae Survey: Early Results

Dec 2001

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2001aas...19910111m&link_type=abstract

American Astronomical Society, 199th AAS Meeting, #101.11; Bulletin of the American Astronomical Society, Vol. 33, p.1463

Astronomy and Astrophysics

Astronomy

Scientific paper

We have investigated 6000 sq. deg. of data from the Lowell Observatory Near Earth Object Survey (LONEOS) with more than 20 epochs down to a limiting magnitude of 19 in R (see Rest, et.al these proceedings). From this dataset, thousands of candidate RR Lyrae stars have been extracted. RR Lyrae stars are excellent standard candles for two reasons: they have characteristic lightcurves which make them easily identifiable, and they also have small scatter in their intrinsic brightness. Thus, a sufficiently large sample of Galactic RR Lyrae stars can probe the structure of the Galaxy. We present lightcurves of several newly discovered RR Lyrae. We also present follow-up photometry with the 3.5-m Apache Point Observatory (APO) and 0.76-m Manastash Ridge Observatory (MRO) to determine the degree of contamination and for the refinement of selection criteria. Finally, we present radial velocity measurements taken at APO for a small sample of RR Lyrae stars identified in LONEOS.

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