Lucas, P.W., Hoare, M.G., Schröder, A.C., Davis, C.J., Adamson, A., Bandyopadhyay, R.M., De Grijs, R., Smith, M., Gosling, A., Mitchison, S., Gáspár, A., Coe, Malcolm, Tamura, M., Parker, Q., Irwin, M., Hambly, N., Bryant, J., Collins, R.S., Cross, N., Evans, D.W., Gonzalez-Solares, E., Hodgkin, S., Lewis, J., Read, M., Riello, M., Sutorius, E.T.W., Lawrence, A., Drew, J.E., Dye, S. and Thompson, M.A. (2008) The UKIDSS galactic plane survey. Monthly Notices of the Royal Astronomical Society, 391 (1), 136-163. (doi:10.1111/j.1365-2966.2008.13924.x).
Abstract
The UKIDSS Galactic Plane Survey (GPS) is one of the five near-infrared Public Legacy Surveys that are being undertaken by the UKIDSS consortium, using the Wide Field Camera on the United Kingdom Infrared Telescope. It is surveying 1868 deg2 of the northern and equatorial Galactic plane at Galactic latitudes -5° < b < 5° in the J, H and K filters and a ~200-deg2 area of the Taurus-Auriga-Perseus molecular cloud complex in these three filters and the 2.12 ?m (1-0) H2 filter. It will provide data on ~2 × 109 sources. Here we describe the properties of the data set and provide a user's guide for its exploitation. We also present brief Demonstration Science results from DR2 and from the Science Verification programme. These results illustrate how GPS data will frequently be combined with data taken in other wavebands to produce scientific results. The Demonstration Science comprises six studies. (1) A GPS-Spitzer-GLIMPSE cross-match for the star formation region G28.983-0.603 to identify YSOs. This increases the number of YSOs identified by a factor of 10 compared to GLIMPSE alone. (2) A wide-field study of the M17 nebula, in which an extinction map of the field is presented and the effect of source confusion on luminosity functions in different subregions is noted. (3) H2 emission in the ? Ophiuchi dark cloud. All the molecular jets are traced back to a single active clump containing only a few protostars, which suggests that the duration of strong jet activity and associated rapid accretion in low-mass protostars is brief. (4) X-ray sources in the nuclear bulge. The GPS data distinguishes local main-sequence counterparts with soft X-ray spectra from nuclear bulge giant counterparts with hard X-ray spectra. (5) External galaxies in the zone of avoidance. The galaxies are clearly distinguished from stars in fields at longitudes l > 90°. (6) IPHAS-GPS optical-infrared spectrophotometric typing. The (i' - J) versus (J - H) diagram is used to distinguish A-F type dwarfs, G dwarfs, K dwarfs and red clump giants in a field with high reddening.
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