IGAPS: the merged IPHAS and UVEX optical surveys of the northern Galactic plane*

Monguio M, Greimel R, Drew JE, Barentsen G, Groot PJ, Irwin MJ, Casares J, Gaensicke BT, Carter PJ, Corral-Santana JM, Gentile-Fusillo NP, Greiss S, Van Haaften LM, Hollands M, Jones D, Kupfer T, Manser CJ, Murphy DNA, Mcleod AF, Oosting T, Parker QA, Pyrzas S, Rodriguez-Gil P, Van Roestel J, Scaringi S, Schellart P, Toloza O, Vaduvescu O, Van Spaandonk L, Verbeek K, Wright NJ, Eisloeffel J, Fabregat J, Harris A, Morris RAH, Phillipps S, Raddi R, Sabin L, Unruh Y, Vink JS, Wesson R, Cardwell A, De Burgos A, Cochrane RK, Doostmohammadi S, Mocnik T, Stoev H, Suarez-Andres L, Tudor V, Wilson TG, Zegmott TJ (2020)

Publication Type: Journal article

Publication year: 2020

Journal

Book Volume: 638

DOI: 10.1051/0004-6361/201937333

Abstract

The INT Galactic Plane Survey (IGAPS) is the merger of the optical photometric surveys, IPHAS and UVEX, based on data from the Isaac Newton Telescope (INT) obtained between 2003 and 2018. Here, we present the IGAPS point source catalogue. It contains 295.4 million rows providing photometry in the filters, i, r, narrow-band H alpha, g, and U-RGO. The IGAPS footprint fills the Galactic coordinate range, |b| < 5 degrees and 30 degrees< l < 215 degrees. A uniform calibration, referred to as the Pan-STARRS system, is applied to g, r, and i, while the H alpha calibration is linked to r and then is reconciled via field overlaps. The astrometry in all five bands has been recalculated in the reference frame of Gaia Data Release 2. Down to i similar to 20 mag (Vega system), most stars are also detected in g, r, and H alpha. As exposures in the r band were obtained in both the IPHAS and UVEX surveys, typically a few years apart, the catalogue includes two distinct r measures, r(I) and r(U). The r 10 sigma limiting magnitude is approximately 21, with median seeing of 1.1 arcsec. Between approximately 13th and 19th mag in all bands, the photometry is internally reproducible to within 0.02 mag. Stars brighter than r=19.5 mag are tested for narrow-band H alpha excess signalling line emission, and for variation exceeding |r(I)-r(U)| = 0.2 mag. We find and flag 8292 candidate emission line stars and over 53 000 variables (both at > 5 sigma confidence).

Authors with CRIS profile

Involved external institutions

Instituto de Astrofísica de Canarias (IAC) Spain (ES) University of Hong Kong (HKU) / 香港大學 Hong Kong (HK) Radboud University Nijmegen Netherlands (NL) University of Keele United Kingdom (GB) University of Bristol United Kingdom (GB) University of Warwick United Kingdom (GB) University of València / Universitat de València Spain (ES) Isaac Newton Group of Telescopes (ING) Spain (ES) Karl-Franzens-Universität Graz Austria (AT) University of Hertfordshire United Kingdom (GB) Thüringer Landessternwarte Tautenburg (TLS) - Karl-Schwarzschild-Observatorium Germany (DE) Texas Tech University (TTU) United States (USA) (US) University College London (UCL) United Kingdom (GB) National Autonomous University of Mexico / Universidad Nacional Autónoma de México (UNAM) Mexico (MX) University of Cambridge United Kingdom (GB) Armagh Observatory United Kingdom (GB) Imperial College London / The Imperial College of Science, Technology and Medicine United Kingdom (GB)

How to cite

APA:

Monguio, M., Greimel, R., Drew, J.E., Barentsen, G., Groot, P.J., Irwin, M.J.,... Zegmott, T.J. (2020). IGAPS: the merged IPHAS and UVEX optical surveys of the northern Galactic plane*. Astronomy & Astrophysics, 638. https://doi.org/10.1051/0004-6361/201937333

MLA:

Monguio, M., et al. "IGAPS: the merged IPHAS and UVEX optical surveys of the northern Galactic plane*." Astronomy & Astrophysics 638 (2020).

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