II/386 VPHAS+ DR3 survey (Drew+, 2025)
The VST Photometric Halpha Survey of the Southern Galactic Plane and Bulge
(VPHAS+). Third VPHAS data release (DR3).
Drew J.E., Gonzalez-Solares E., Greimel R., Irwin M.J., Kupcu Yoldas A.,
Lewis J., Barentsen G., Eisloffel J., Farnhill H.J., Martin W.E.,
Walsh J.R., Walton N.A., Mohr-Smith M., Raddi R., Sale S.E., Wright N.J.,
Groot P., Barlow M.J., Corradi R.L.M., Drake J.J., Fabregat J., Frew D.J.,
Gansicke B.T., Knigge C., Mampaso A., Morris R.A.H., Naylor T.,
Parker Q.A., Phillipps S., Ruhland C., Steeghs D., Unruh Y.C., Vink J.S.,
Wesson R., Zijlstra A.A.
<Mon. Not. R. Astron. Soc. 440, 2036 (2014) >
=2014MNRAS.440.2036D 2014MNRAS.440.2036D
=2025yCat.2386....0D 2025yCat.2386....0D
ADC_Keywords: Surveys ; Photometry, uvby ; Photometry, H-alpha
Mission_Name: ESO
Keywords: surveys - stars: general - HII regions - planetary nebulae: general -
Galaxy: bulge - Galaxy: disc
Abstract:
The primary goal of the VST Photometric Hα Survey of the
Southern Galactic Plane and Bulge (VPHAS+) is to collect single-epoch
ugri broad-band and Ha narrow-band photometry across the southern
Galactic Plane within the latitude range -5°<b<+5° down to
point source magnitudes of ∼21 or better. The VPHAS+ footprint also
includes the inner Galactic Bulge, defined as a 20x20 deg2 box
around the Galactic Centre: this assures optical coverage of the full
VVV footprint. For all massive OBA stars this survey is deep enough to
explore all but the most heavily obscured locations of the southern
Plane, reaching to >4kpc from the Sun. These data will increase the
number of known southern emission line stars by up to an order of
magnitude, yielding much better statistics on important short-lived
types of object. The wide-area uniform photometry obtained will also
facilitate stellar population studies, capable of tracing structure
over much of the southern Plane. VPHAS+ will trawl the star-formation
history of the Galaxy as seen in stellar remnants of all types.
Description:
This multi-band source catalogue in the five filters u,g,r,i,Ha
encompasses the area of the VPHAS+ DR3, covering 1200 square degrees,
i.e. data taken up to 30/09/2015. It contains 610 million primary
detections.
These data are assembled from pipeline-delivered flux files. As such, the
calibration is not guaranteed to be uniform from pointing to pointing (each
occupying 1 sq.deg.), and there is commonly more than one row per unique
source. Users requiring data for a set of objects spread over a wide sky
area should bear this in mind, and favour VPHAS+ DR2 if uniform calibration
is important, when DR2 covers the region of interest.
File Summary:
--------------------------------------------------------------------------------
FileName Lrecl Records Explanations
--------------------------------------------------------------------------------
ReadMe 80 . This file
vphasplus32.sam 799 1000 VPHAS+ DR3.2 catalog
--------------------------------------------------------------------------------
See also:
II/341 : VPHAS+ DR2 survey (Drew+, 2016)
Byte-by-byte Description of file: vphasplus32.sam
--------------------------------------------------------------------------------
Bytes Format Units Label Explanations
--------------------------------------------------------------------------------
1- 12 I12 --- SrcID UID of this merged detection as assigned by
merge algorithm (SOURCEID)
14- 29 F16.12 deg RAdeg Celestial Right Ascension (J2000) (RA2000)
31- 46 F16.12 deg DEdeg Celestial Declination (J2000) (DEC2000)
48- 73 A26 --- Name IAU Name (not unique) (IAUNAME)
75- 90 F16.12 deg GLON Galactic longitude (L)
92-107 F16.12 deg GLAT Galactic latitude (B)
109-110 I2 --- Mclass [-9/1]? Class flag (MERGEDCLASS) (1)
112-119 F8.4 mag u-gpnt ? Point source colour u-g (using aperMag3)
(UMGPNT)
121-132 E12.7 mag e_u-gpnt ? Error on point source colour u-g (UMGPNTERR)
133-140 F8.4 mag g-r2pnt ? Point source contemporary g-r2 (aperMag3)
from ugr2 epoch (GMR2PNT)
142-153 E12.7 mag e_g-r2pnt ? Error on point source colour g-r2
(GMR2PNTERR)
154-161 F8.4 mag r-Hapnt ? Point source contemporary r-Halpha
(aperMag3) from riHa epoch (RMHAVPHASPNT)
163-174 E12.7 mag e_r-Hapnt ? Error on point source colour r-Halpha
(RMHAVPHASPNTERR)
176-183 F8.4 mag r-ipnt ? Point source contemporary r-i (aperMag3)
from riHa epoch (RMIPNT)
185-196 E12.6 mag e_r-ipnt ? Error on point source colour r-i (RMIPNTERR)
197-211 F15.9 d u-MJD ? The mean Modified Julian Day of each
detection (UMJD)
213-219 F7.4 mag uap3 ? Default point source u aperture corrected
mag (2.0 arcsec diameter) (UAPERMAG3)
221-232 E12.7 mag e_uap3 ? Error in default point source u aperture
corrected magnitude (2.0 arcsec aperture
diameter) (UAPERMAG3ERR)
233-239 F7.4 mag uap6 ? Point source u aperture corrected magnitude
(5.7 arcsec aperture diameter) (UAPERMAG6)
241-252 E12.7 mag e_uap6 ? Error in point source u aperture corrected
magnitude (5.7 arcsec aperture)
(UAPERMAG6ERR)
253-260 F8.4 pix urms ? RMS of axes of ellipse fit in u (UGAUSIG)
262-268 F7.5 --- uell ? 1-b/a, where a/b=semi-major/minor axes
in u (UELL)
270-277 F8.4 --- uavg ? Average confidence in 2 arcsec diameter
default aperture (aper3) u (UAVERAGECONF)
279-293 F15.9 d g-MJD ? The mean Modified Julian Day of each
detection (GMJD)
295-301 F7.4 mag gap3 ? Default point source g aperture corrected
magnitude (2.0 arcsec diameter) (GAPERMAG3)
303-314 E12.7 mag e_gap3 ? Error in default point source g aperture
corrected magnitude (2.0 arcsec aperture
diameter) (GAPERMAG3ERR)
315-321 F7.4 mag gap6 ? Point source g aperture corrected magnitude
(5.7 arcsec aperture diameter) (GAPERMAG6)
323-334 E12.7 mag e_gap6 ? Error in point source g aperture corrected
magnitude (5.7 arcsec aperture)
(GAPERMAG6ERR)
335-343 F9.4 pix grms ? RMS of axes of ellipse fit in g (GGAUSIG)
345-352 F8.6 --- gell ? 1-b/a, where a/b=semi-major/minor axes
in g (GELL)
354-361 F8.4 --- gavg ? Average confidence in 2 arcsec diameter
default aperture (aper3) g (GAVERAGECONF)
363-369 F7.4 arcsec gxi ? Offset of g detection from master position
(+east/-west) (GXI)
371-377 F7.4 arcsec geta ? Offset of g detection from master position
(+north/-south) (GETA)
379-393 F15.9 d r2-MJD ? The mean Modified Julian Day of each
detection, from ugr2 (R2MJD)
395-401 F7.4 mag r2ap3 ? Default point source r2 aperture corrected
magnitude (2.0 arcsec diameter)
(R2APERMAG3)
403-414 E12.7 mag e_r2ap3 ? Error in default point source r2 aperture
corrected magnitude (2.0 arcsec aperture
diameter) (R2APERMAG3ERR)
415-421 F7.4 mag r2ap6 ? Point source r2 aperture corrected
magnitude (5.7 arcsec aperture diameter)
(R2APERMAG6)
423-434 E12.7 mag e_r2ap6 ? Error in point source r2 aperture corrected
magnitude (5.7 arcsec aperture diameter)
(R2APERMAG6ERR)
435-442 F8.4 pix r2rms ? RMS of axes of ellipse fit in r2,
from ugr2 (R2GAUSIG)
444-450 F7.5 --- r2ell ? 1-b/a, where a/b=semi-major/minor axes
in r2, from ugr2 (R2ELL)
452-459 F8.4 --- r2avg ? Average confidence in 2 arcsec diameter
default aperture (aper3) r2 (R2AVERAGECONF)
461-467 F7.4 arcsec r2xi ? Offset of r2 detection from master position
(+east/-west) from (R2XI)
469-475 F7.4 arcsec r2eta ? Offset of r2 detection from master position
(+north/-south) from (R2ETA)
478-492 F15.9 d r-MJD ? The mean Modified Julian Day of each
detection, from riHa (RMJD)
494-500 F7.4 mag rap3 ? Default point source r aperture corrected
magnitude (2.0 arcsec diameter) (RAPERMAG3)
502-513 E12.6 mag e_rap3 ? Error in default point source r aperture
corrected magnitude (2.0 arcsec aperture
diameter) (RAPERMAG3ERR)
515-521 F7.4 mag rap6 ? Point source r aperture corrected
magnitude (5.7 arcsec aperture diameter)
(RAPERMAG6)
523-534 E12.6 mag e_rap6 ? Error in point source r aperture
corrected magnitude (5.7 arcsec aperture
diameter) (RAPERMAG6ERR)
536-543 F8.4 pix rrms ? RMS of axes of ellipse fit in r,
from riHa (RGAUSIG)
545-551 F7.5 --- rell ? 1-b/a, where a/b=semi-major/minor axes
in r, from riHa (RELL)
553-558 F6.2 deg rPA ? Ellipse fit celestial orientation
in r, from riHa (RPA)
560-567 F8.4 --- ravg ? Average confidence in 2 arcsec diameter
default aperture (aper3) r (RAVERAGECONF)
569-575 F7.4 arcsec rxi ? Offset of r detection from master position
(+east/-west) from (RXI)
577-583 F7.4 arcsec reta ? Offset of r detection from master position
(+north/-south) (RETA)
585-599 F15.9 d i-MJD ? The mean Modified Julian Day of each
detection (IMJD)
601-607 F7.4 mag iap3 ? Default point source i aperture corrected
magnitude (2.0 arcsec diameter) (IAPERMAG3)
609-620 E12.6 mag e_iap3 ? Error in default point source i aperture
corrected magnitude (2.0 arcsec aperture
diameter) (IAPERMAG3ERR)
622-628 F7.4 mag iap6 ? Point source i aperture corrected magnitude
(5.7 arcsec aperture diameter) (IAPERMAG6)
630-641 E12.7 mag e_iap6 ? Error in point source i aperture corrected
magnitude (5.7 arcsec aperture)
(IAPERMAG6ERR)
643-650 F8.4 pix irms ? RMS of axes of ellipse fit in i (IGAUSIG)
652-658 F7.5 --- iell ? 1-b/a, where a/b=semi-major/minor axes
in i (IELL)
660-665 F6.2 deg iPA ? Ellipse fit celestial orientation in i (IPA)
667-674 F8.4 --- iavg ? Average confidence in 2 arcsec diameter
default aperture (aper3) i (IAVERAGECONF)
676-682 F7.4 arcsec ixi ? Offset of I detection from master position
(+east/-west) (IXI)
684-690 F7.4 arcsec ieta ? Offset of i detection from master position
(+north/-south) (IETA)
692-706 F15.9 d Ha-MJD ? The mean Modified Julian Day of each
detection (HAVPHASMJD)
708-714 F7.4 mag Haap3 ? Default point source Havphas aperture
corrected magnitude (2.0 arcsec aperture
diameter) (HAVPHASAPERMAG3)
716-727 E12.7 mag e_Haap3 ? Error in default point source havphas
aperture corrected magnitude (2.0 arcsec
aperture diameter) (HAVPHASAPERMAG3ERR)
729-735 F7.4 mag Haap6 ? Point source Havphas aperture corrected
magnitude (5.7 arcsec aperture diameter)
(HAVPHASAPERMAG6)
737-748 E12.7 mag e_Haap6 ? Error in point source havphas aperture
corrected magnitude (5.7 arcsec aperture
diameter) (HAVPHASAPERMAG6ERR)
750-757 F8.4 pix Harms ? RMS of axes of ellipse fit in Havphas
(HAVPHASGAUSIG)
759-765 F7.5 --- Haell ? 1-b/a, where a/b=semi-major/minor axes
in Havphas (HAVPHASELL)
767-772 F6.2 deg HaPA ? Ellipse fit celestial orientation in Havphas
(HAVPHASPA)
774-781 F8.4 --- Haavg ? Average confidence in 2 arcsec diameter
default aperture (aper3) Havphas
(HAVPHASAVERAGECONF)
783-789 F7.4 arcsec Haxi ? Offset of Havphas detection from master
position (+east/-west) (HAVPHASXI)
791-797 F7.4 arcsec Haeta ? Offset of Havphas detection from master
position (+north/-south) (HAVPHASETA)
799 I1 --- prim [0/1] Primary source 1; secondary source 0
(PRIMARY_SOURCE)
--------------------------------------------------------------------------------
Note (1): Class flag as follows:
1 = galaxy
0 = noise
-1 = star
-2 = probable star
-3 = probable galaxy
-9 = saturated
--------------------------------------------------------------------------------
History:
From https://www.eso.org/qi/catalog/show/215
Acknowledgements:
Please include the following acknowledgment in any published material that
makes use of this data product: Based on data obtained from the ESO Science
Archive Facility with DOI: https://doi.org/10.18727/archive/65
(End) Patricia Vannier [CDS] 02-Apr-2025