/ftp/cats/ii/321



==========================================================================
II/321              IPHAS DR2 Source Catalogue                (Barentsen+, 2014)
The following files can be converted to FITS (extension .fit or fit.gz)
	iphas2.sam
==========================================================================
Query from: http://vizier.cds.unistra.fr/viz-bin/VizieR?-source=II/321
==========================================================================

drwxr-xr-x 351 cats archive 8192 Mar 25 10:13 [Up] drwxr-xr-x 4 cats archive 4096 Jan 30 15:46 [TAR file] -rw-r--r-- 1 cats archive 461 Jan 30 15:46 .message -r--r--r-- 1 cats archive 15778 Jun 20 2017 ReadMe -rw-r--r-- 1 cats archive 1265 Jan 30 15:46 +footg5.gif -rw-r--r-- 1 cats archive 9109 Jan 30 15:46 +footg8.gif -r--r--r-- 1 cats archive 649000 Sep 10 2014 iphas2.sam
Beginning of ReadMe : II/321 IPHAS DR2 Source Catalogue (Barentsen+, 2014) ================================================================================ The Second Data Release of the INT Photometric H-Alpha Survey of the Northern Galactic Plane (IPHAS DR2) Barentsen G., Farnhill H.J., Drew J.E., Gonzalez-Solares E.A., Greimel R., Irwin M.J., Miszalski B., Ruhland C., Groot P., Mampaso A., Sale S.E., Henden A.A., Aungwerojwit A., Barlow M.J., Carter P.J., Corradi R.L.M., Drake J.J., Eisloffel J., Fabregat J., Gansicke B.T., Gentile Fusillo N.P., Greiss S., Hales A.S., Hodgkin S., Huckvale L., Irwin J., King R., Knigge C., Kupfer T., Lagadec E., Lennon D.J., Lewis J.R., Mohr-Smith M., Morris R.A.H., Naylor T., Parker Q.A., Phillipps S., Pyrzas S., Raddi R., Roelofs G.H.A., Rodriguez-Gil P., Sabin L., Scaringi S., Steeghs D., Suso J., Tata R., Unruh Y.C., Roestel J.VAN , Viironen K., Vink J.S., Walton N.A., Wright N.J., Zijlstra A.A. <Mon. Not. R. Astron. Soc., 444, 3220--3257 (2014)> =2014yCat.2321....0B =2014MNRAS.444.3230B ================================================================================ ADC_Keywords: Photometry, H-alpha ; Stars, emission ; Galactic plane ; Surveys Keywords: catalogues, surveys - stars: emission-line - Galaxy: stellar content Description: The INT/WFC Photometric H-Alpha Survey of the Northern Galactic Plane (IPHAS) is a 1860 deg^2^ imaging survey of the Northern Milky Way at red visible wavelengths. It covers Galactic latitudes |b|<5deg and longitudes l=30 to 215deg in the broad-band r, i and narrow-band H-alpha filters using the Wide Field Camera (WFC) on the 2.5-m Isaac Newton Telescope (INT) in La Palma. IPHAS Data Release 2 (DR2) is the first quality-controlled and globally calibrated source catalogue derived from the survey, providing single-epoch photometry for 219 million unique sources across 92% 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) and to a mean 5-sigma depth of 21.2 (r), 20.0 (i) and 20.3 (H-alpha). The photometric calibration is in the Vega magnitude system and carries an external precision of 0.03mag (root-mean-square error). The catalogue includes all the sources which have been detected at a signal-to-noise ratio of 5 or better in at least one band. Many applications will require a combination of quality criteria to be applied to avoid faint stars or confused sources. The choice of quality criteria tensions completeness against reliability, and hence depends on the requirements of a project. To aid users, the data release paper (arXiv:1406.4862) recommends two sets of quality criteria, named "a10" and "a10point", which should satisfy most projects. As a minimum, the "a10" criteria select objects which have been detected at the minimum level of 10-sigma in all bands, without being saturated. Additional constraints are provided by the "a10point" criteria, which require objects to be point sources free of blending, unaffected by nearby bright stars, as well as being unsaturated >10-sigma detections in all bands. Sources in both categories are flagged in the catalogue using the boolean columns a10 and a10point. Imaging and auxiliary data are available from the project website (www.iphas.org). Acknowledging IPHAS in publications: The survey is defined in Drew et al. (2005MNRAS.362..753D) and the DR2 catalogue is presented in Barentsen et al. (arXiv:1406.4862). Users are requested to cite these papers as appropriate in journal articles and similar. Please include the following in any published material that makes use of the IPHAS data products: "This paper makes use of data obtained as part of the INT Photometric H-alpha Survey of the Northern Galactic Plane (IPHAS, www.iphas.org) carried out at the Isaac Newton Telescope (INT). The INT is operated on the island of La Palma by the Isaac Newton Group in the Spanish Observatorio del Roque de los Muchachos of the Instituto de Astrofisica de Canarias. All IPHAS data are processed by the Cambridge Astronomical Survey Unit, at the Institute of Astronomy in Cambridge. The bandmerged DR2 catalogue was assembled at the Centre for Astrophysics Research, University of Hertfordshire, supported by STFC grant ST/J001333/1."