Journal
MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
Volume 444, Issue 4, Pages 3230-3257Publisher
OXFORD UNIV PRESS
DOI: 10.1093/mnras/stu1651
Keywords
catalogues; surveys; stars: emission-line, Be; Galaxy: stellar content
Categories
Funding
- Science and Technology Facilities Council of the UK (STFC) [ST/J001335/1]
- Robert Martin Ayers Sciences Fund
- Alfred P. Sloan Foundation
- National Science Foundation
- US Department of Energy
- National Aeronautics and Space Administration
- Japanese Monbukagakusho
- Max Planck Society
- Higher Education Funding Council for England
- NASA
- NSF
- Science and Technology Facilities Council of the United Kingdom [ST/J001333/1, ST/K00106X/1, ST/I001719/1]
- STFC
- Spanish Plan Nacional de I+D+i
- FEDER [AYA2010-18352]
- European Research Council under the European Union [320964]
- Ramon y Cajal fellowship [RYC-2010-05762]
- Spanish MINECO [AYA2012-38700]
- Royal Astronomical Society of the United Kingdom
- Physics Department of Imperial College London
- STFC [ST/L001381/1, ST/G004269/1, ST/I005773/1, ST/I000860/1, ST/L001403/1, ST/K00106X/1, ST/L000768/1, ST/J001333/1, ST/L000733/1, ST/K502029/1, ST/I001077/1, PP/E003494/1, ST/J001511/1, ST/J001600/1, ST/J00541X/1, ST/G002622/1, ST/I505699/1, ST/J001414/1, ST/I001719/1] Funding Source: UKRI
- Science and Technology Facilities Council [ST/K502029/1, ST/I000860/1, ST/J001333/1, ST/L001381/1, ST/G004269/1, ST/J001600/1, ST/I505699/1, ST/I005773/1, ST/L000733/1, ST/I001719/1, ST/L001403/1, ST/I001077/1, ST/G002622/1, ST/K00106X/1, ST/J001511/1, ST/L000768/1, PP/E003494/1, ST/J001414/1, ST/J00541X/1] Funding Source: researchfish
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The INT/WFC Photometric H alpha Survey of the Northern Galactic Plane (IPHAS) is a 1800 deg(2) imaging survey covering Galactic latitudes vertical bar b vertical bar < 5 degrees and longitudes l = 30 degrees-215 degrees in the r, i, and H alpha filters using the Wide Field Camera (WFC) on the 2.5-m Isaac Newton Telescope (INT) in La Palma. We present the first quality-controlled and globally calibrated source catalogue derived from the survey, providing single-epoch photometry for 219 million unique sources across 92 per cent of the footprint. The observations were carried out between 2003 and 2012 at a median seeing of 1.1 arcsec (sampled at 0.33 arcsec pixel(-1)) and to a mean 5 sigma depth of 21.2 (r), 20.0 (i), and 20.3 (H alpha) in the Vega magnitude system. We explain the data reduction and quality control procedures, describe and test the global re-calibration, and detail the construction of the new catalogue. We show that the new calibration is accurate to 0.03 mag (root mean square) and recommend a series of quality criteria to select accurate data from the catalogue. Finally, we demonstrate the ability of the catalogue's unique (r -H alpha, r - i) diagram to (i) characterize stellar populations and extinction regimes towards different Galactic sightlines and (ii) select and quantify H alpha emission-line objects. IPHAS is the first survey to offer comprehensive CCD photometry of point sources across the Galactic plane at visible wavelengths, providing the much-needed counterpart to recent infrared surveys.
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