Northern Sky Variability Survey: Public Data Release
| Autor: | S. L. Marshall, Katherine E. McGowan, Timothy A. McKay, S. Fletcher, R. Balsano, W. T. Vestrand, Robert Kehoe, Brian C. Lee, Jeffrey J. Bloch, P. R. Wozniak, Galen Gisler, Karen Kinemuchi, John J. Szymanski, E. S. Rykoff, D. A. Smith, Donald E. Casperson, Carl W. Akerlof, Jim Wren |
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| Rok vydání: | 2004 |
| Předmět: |
Physics
Data collection Pixel 010308 nuclear & particles physics media_common.quotation_subject Astrophysics (astro-ph) FOS: Physical sciences Astronomy and Astrophysics Astrophysics Light curve 01 natural sciences Declination Photometry (optics) Stars Space and Planetary Science Sky Data quality 0103 physical sciences 010303 astronomy & astrophysics media_common Remote sensing |
| Zdroj: | The Astronomical Journal. 127:2436-2449 |
| ISSN: | 1538-3881 0004-6256 |
| DOI: | 10.1086/382719 |
| Popis: | The Northern Sky Variability Survey (NSVS) is a temporal record of the sky over the optical magnitude range from 8 to 15.5. It was conducted in the course of the first generation Robotic Optical Transient Search Experiment (ROTSE-I) using a robotic system of four co-mounted unfiltered telephoto lenses equipped with CCD cameras. The survey was conducted from Los Alamos, NM, and primarily covers the entire northern sky. Some data in southern fields between declinations 0 and -38 deg is also available, although with fewer epochs and noticeably lesser quality. The NSVS contains light curves for approximately 14 million objects. With a one year baseline and typically 100-500 measurements per object, the NSVS is the most extensive record of stellar variability across the bright sky available today. In a median field, bright unsaturated stars attain a point to point photometric scatter of ~0.02 mag and position errors within 2 arcsec. At Galactic latitudes |b| < 20 deg the data quality is limited by severe blending due to ~14 arcsec pixel size. We present basic characteristics of the data set and describe data collection, analysis, and distribution. All NSVS photometric measurements are available for on-line public access from the Sky Database for Objects in Time-Domain (SkyDOT; http://skydot.lanl.gov) at LANL. Copies of the full survey photometry may also be requested on tape. accepted for publication in Astronomical Journal |
| Databáze: | OpenAIRE |
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