VIII/82 2nd Epoch Molonglo Galactic Plane Survey (MGPS-2) (Murphy+, 2007)
The 2nd Epoch Molonglo Galactic Plane Survey (MGPS-2), Version 15 August 2007.
Murphy T., Mauch T., Green A., Hunstead R.W., Piestrzynska B.,
Kels A.P., Sztajer P.
<Mon. Not. R. Astron. Soc. 382, 382 (2007)>
=2007MNRAS.382..382M 2007MNRAS.382..382M
ADC_Keywords: Galactic plane ; Radio sources ; Surveys ; Radio continuum
Keywords: catalogues - surveys - methods: data analysis - radio continuum: ISM -
Galaxy: general
Description:
The MGPS-2 (second epoch Molonglo Galactic Plane Survey) was carried
out with the Molonglo Observatory Synthesis Telescope at a frequency
of 843MHz and with a restoring beam of 45"x45"csd|δ|, making
it he highest resolution large scale radio survey of the southern
Galactic plane. It covers the range |b|<10° and 245<l<365°;
it is the Galactic counterpart to the SUMSS (Cat. VIII/81) which covers
the southern sky (δ←30°, |b|>10°).
This catalogue (15-Aug-2007) consists of 48850 compact sources, made
by fitting elliptical gaussians in the MGPS-2 mosaics to a limiting
peak brightness of 10mJy/beam. We used a custom method (described in
the associated publication) to remove extended sources from the
catalogue. Positions in the catalogue are accurate to 1-2".
See http://www.astrop.physics.usyd.edu.au/mosaics for access to the
mosaic images.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
mgpscat.dat 179 48850 The MGPS-2 Catalog, Version 1.0 (2007-08-15)
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See also:
VIII/78 : Sydney University Molonglo Sky Survey (SUMSS) (Mauch+ 2006)
http://www.physics.usyd.edu.au/ioa/Main/MGPS2 : the MGPS-2 Home Page
Byte-by-byte Description of file: mgpscat.dat
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Bytes Format Units Label Explanations
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1- 4 A4 --- --- [MGPS]
6- 19 A14 --- MGPS MGPS designation (JHHMMSS-DDMMSS)
21- 31 F11.7 deg GLON Galactic longitude (degrees)
33- 43 F11.7 deg GLAT Galactic latitude (degrees)
45- 46 I2 h RAh Right Ascension J2000 (hours)
48- 49 I2 min RAm Right Ascension J2000 (minutes)
51- 55 F5.2 s RAs Right Ascension J2000 (seconds)
58 A1 --- DE- Declination J2000 (sign)
59- 60 I2 deg DEd Declination J2000 (degrees)
62- 63 I2 arcmin DEm Declination J2000 (minutes)
65- 69 F5.2 arcsec DEs Declination J2000 (seconds)
71- 74 F4.1 arcsec e_RAs rms uncertainty in Right Ascension (1)
76- 79 F4.1 arcsec e_DEs rms uncertainty in Declination (1)
83- 89 F7.1 mJy Sp Peak brightness at 843MHz (in mJy/beam)
91- 96 F6.1 mJy e_Sp Uncertainty on Sp
99-106 F8.1 mJy St Total flux density at 843MHz
108-113 F6.1 mJy e_St Uncertainty on St
116-121 F6.1 arcsec MajAxis Fitted major axis
123-127 F5.1 arcsec MinAxis Fitted minor axis
129-133 F5.1 deg PA Fitted major axis position angle (N to E)
136-141 F6.1 arcsec dMajAxis Fitted major axis after deconvolution (2)
143-147 F5.1 arcsec dMinAxis Fitted minor axis after deconvolution (2)
149-153 F5.1 deg dPA ? Fitted major axis position angle
after deconvolution
156-163 A8 --- Mosaic Mosaic in which the source appears (3)
165 I1 --- Nm Number of mosaics with the source (4)
167-172 F6.1 pix Xpos Position of the source on quoted mosaic (4)
174-179 F6.1 pix Ypos Position of the source on quoted mosaic (4)
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Note (1): Positional uncertainties are calculated from the quadratic
sum of the MOST calibration using Equations (1) and (2) of the paper.
Note (2): If the fitted major axis size exceeds the beam size by more than
2.33σ(θM), the major axis size after deconvolution from
the MOST beam is given in arcseconds.
Note (3): The naming scheme for MGPS-2 mosaics is JHHMMMDD indicating the
J2000 RA and Dec of the mosaic centre. The original mosaics are
available online at http://www.astrop.physics.usyd.edu.au/mosaics
In the case of duplicate matches the mosaic name quoted is that used
for the fit which is chosen to be included in the catalogue.
Note (4): When the source appears in more than one image, the source
parameters are those of the most reliable fit.
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Nomenclature Notes:
MGPS-2 sources should be referred by their truncated position
MGPS JHHMMSS-DDMMSS
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Acknowledgements:
Tara Murphy, tara(at)physics.usyd.edu.au
(End) Patricia Vannier [CDS] 17-Aug-2007