J/MNRAS/453/1396 AMI Galactic Plane Survey at 16GHz. II. (Perrott+, 2015)
AMI Galactic Plane Survey at 16GHz.
II. Full data release with extended coverage and improved data processing.
Perrott Y.C., Scaife A.M.M., Green D.A., Grainge K.J.B., Hurley-Walker N.,
Rumsey C., Jin T.Z.
<Mon. Not. R. Astron. Soc. 453, 1396 (2015)>
=2015MNRAS.453.1396P 2015MNRAS.453.1396P
ADC_Keywords: Radio sources ; Surveys ; Radio continuum; Galactic plane
Keywords: catalogues - surveys - ISM: general - Galaxy: general -
radio continuum: general
Abstract:
The Arcminute Microkelvin Imager Galactic Plane Survey (AMIGPS)
provides mJy-sensitivity, arcminute-resolution interferometric images
of the northern Galactic plane at ∼16GHz. The first data release
covered 76°≤l≤170° between latitudes of |b|≤5°; here we
present a second data release, extending the coverage to
53°≤l≤193° and including high-latitude extensions to cover
the Taurus and California giant molecular cloud regions, and the
recently discovered large supernova remnant G159.6+7.3. The total
coverage is now 1777°2 and the catalogue contains 6509 sources.
We also describe the improvements to the data processing pipeline
which improves the positional and flux density accuracies of the
survey.
Description:
The AMI Galactic Plane survey has been made with the Arcminute
Microkelvin Imager (AMI) Small Array at 15.7GHz and with resolution
of approximately 3-arcmin. This is the second data release, covering
∼1777°2 of the Northern Galactic plane between |b|≤5°
and above δ=20°, plus high-latitude extensions to cover the
Taurus and California giant molecular clouds and the supernova remnant
G159.6+7.3. The noise level of the survey is ∼3mJy/beam away from
bright sources. The source catalogue contains a total of 6509 sources.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
dr2_cat.dat 157 6509 AMIGPS source list of 6509 sources
list.dat 31 70 List of maps
maps/* . 70 Individual fits maps (scale=20arcsec/pix)
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See also:
J/MNRAS/429/3330 : AMI Galactic Plane Survey at 16GHz. I. (Perrott+, 2013)
http://www.astro.phy.cam.ac.uk/surveys/amigps : AMIGPS Home Page
Byte-by-byte Description of file: dr2_cat.dat
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Bytes Format Units Label Explanations
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1- 6 A6 --- --- [AMIGPS]
8- 21 A14 --- AMIGPS AMIGPS source designation, JHHMMSS+DDMMSS
23- 24 I2 h RAh Peak right ascension (J2000)
26- 27 I2 min RAm Peak right ascension (J2000)
29- 33 F5.2 s RAs Peak right ascension (J2000)
35 A1 --- DE- Peak declination sign (J2000)
36- 37 I2 deg DEd Peak declination (J2000)
39- 40 I2 arcmin DEm Peak declination (J2000)
42- 45 F4.1 arcsec DEs Peak declination (J2000)
47- 50 F4.1 arcsec e_RAs [1/31] Error on peak right ascension (J2000)
52- 55 F4.1 arcsec e_DEs [2/31] Error on peak declination (J2000)
57- 64 F8.1 mJy Spk [5/195000] Peak flux density at 15.7GHz
66- 71 F6.1 mJy e_Spk [1/9900] Error on peak flux density
73- 74 I2 h RAIh ? Centroid right ascension (J2000)
76- 77 I2 min RAIm ? Centroid right ascension (J2000)
79- 83 F5.2 s RAIs ? Centroid right ascension (J2000)
85 A1 --- DEI- ? Centroid declination sign (J2000)
86- 87 I2 deg DEId ? Centroid declination (J2000)
89- 90 I2 arcmin DEIm ? Centroid declination (J2000)
92- 95 F4.1 arcsec DEIs ? Centroid declination (J2000)
97-101 F5.1 arcsec e_RAIs [1/152]? Error on centroid right ascension
103-107 F5.1 arcsec e_DEIs [1/140]? Error on centroid declination
109-116 F8.1 mJy Sint [0/376840]? Integrated flux density at 15.7GHz
118-124 F7.1 mJy e_Sint [0.1/19258]? Error on integrated flux density
126-130 F5.1 arcsec Dcrit Critical source size ecrit, below which a
source is classifed at point-like
132-137 F6.1 arcsec Dmaj ? Major axis FWHM after deconvolution
139-143 F5.1 arcsec Dmin ? Minor axis FWHM after deconvolution
145-149 F5.1 deg PA [0/180]? Position angle of major axis
151-155 F5.2 --- chi2 [0.2/32]? Goodness of fit
157 A1 --- Type [PE-] Source type: P=point-like, E=extended,
-=fitting failed or unclassified
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Byte-by-byte Description of file: list.dat
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Bytes Format Units Label Explanations
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1- 6 F6.2 deg GLON [55/191] Galactic longitude of map center
8- 13 F6.2 deg GLAT [-21/11] Galactic latitude of map center
15- 31 A17 --- FileName Name of the tar file in subdirectory maps (1)
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Note (1): Each tar file (named GLLL.ll+B.bb.tar) contains 3 fits files:
GLLL.ll+B.bb_gal.fits : map of the 6x6° covering the main
survey area, centered at the given position
GLLL.ll+B.bbgaladj.noise.fits : 'adjusted' noise map
GLLL.ll+B.bb_gal.noise.fits : associated noise map
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Acknowledgements:
Yvette Perrott, ycp21(at)mrao.cam.ac.uk
References:
Perrott et al., Paper I 2013MNRAS.429.3330P 2013MNRAS.429.3330P, Cat. J/MNRAS/429/3330
(End) Yvette Perrott [MRAO], Patricia Vannier [CDS] 19-Aug-2015