J/AJ/149/64 MIPSGAL 24µm point source catalog (Gutermuth+, 2015)
A 24µm point source catalog of the galactic plane from Spitzer/MIPSGAL.
Gutermuth R.A., Heyer M.
<Astron. J., 149, 64 (2015)>
=2015AJ....149...64G 2015AJ....149...64G
ADC_Keywords: Milky Way ; Infrared sources; Photometry, infrared
Mission_Name: Spitzer
Keywords: catalogs - Galaxy: stellar content - infrared: stars
Abstract:
In this contribution, we describe the applied methods to construct a
24µm based point source catalog derived from the image data of the
MIPSGAL 24µm Galactic Plane Survey and the corresponding data
products. The high quality catalog product contains 933818 sources,
with a total of 1353228 in the full archive catalog. The source tables
include positional and photometric information derived from the
24µm images, source quality and confusion flags, and counterpart
photometry from matched 2MASS, GLIMPSE, and WISE point sources.
Completeness decay data cubes are constructed at 1' angular resolution
that describe the varying background levels over the MIPSGAL field and
the ability to extract sources of a given magnitude from this
background. The completeness decay cubes are included in the set of
data products. We present the results of our efforts to verify the
astrometric and photometric calibration of the catalog, and present
several analyses of minor anomalies in these measurements to justify
adopted mitigation strategies.
Description:
The Multiband Imaging Photometer (MIPS) Galactic Plane Survey
(MIPSGAL) Survey is a Legacy Program of the Spitzer Space Telescope
that imaged the 24 and 70µm emission along the inner disk of the
Milky Way (Carey et al., 2009PASP..121...76C 2009PASP..121...76C).
We present the results of a full point source extraction from the
entire MIPSGAL 24µm enhanced mosaics of the Milky Way. he high
quality catalog product contains 933818 sources, with a total of
1353228 in the full archive catalog.
Over sources have been identified, photometered, and characterized for
source quality via Full Width at Half Maximum (FWHM) and nearest
neighbor distance measurements in our archive product.
The archive source list has been matched with several complementary
catalogs from the public archives (2MASS, cat. II/246; GLIMPSE, cat.
II/293; WISE, cat. II/328), yielding a substantial new multiple
bandpass photometric resource for the community. Over 94% of the
MIPSGAL sources have a counterpart in at least one of the external
catalogs.
We have used comparisons to these large surveys as well as some
MIPSGAL photometry in the literature to evaluate the astrometric and
photometric veracity of our archive and examine its completeness.
Based on this work, constant astrometric offsets were applied to each
tile.
Ideal ranges of source quality measurements were identified from which
a high reliability catalog product was constructed. The catalog is
composed of over 9*105 sources that obey the more stringent
constraints.
We measured source detection completeness decay as a function of
source flux at 1 square arcminute scale for the entire MIPSGAL 24µm
survey. The data cubes (one for each MIPSGAL tile) resulting from this
effort are provided as a companion product to aid in subsequent
analysis of the catalog.
The catalog and non-catalog archive source lists, as well as the
completeness decay cubes in FITS format, are hosted and publicly
available in the Infrared Science Archive (IRSA) at Caltech's
Infrared Processing and Analysis Center (IPAC)
(http://irsa.ipac.caltech.edu/frontpage/).
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table2.dat 36 328 MIPSGAL tile astrometry offsets
and residuals summary
table3.dat 111 4 MIPSGAL confusion conditions
catalog.dat 546 933818 MIPSGAL 24µm point source catalog
(2015-05-22 version)
archive.dat 546 419410 MIPSGAL 24µm lower quality point source archive
(2015-05-22 version)
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See also:
II/311 : WISE All-Sky Data Release (Cutri+ 2012)
II/293 : GLIMPSE Source Catalog (I + II + 3D) (IPAC 2008)
II/246 : 2MASS All-Sky Catalog of Point Sources (Cutri+ 2003)
J/ApJS/184/18 : Spitzer survey of young stellar clusters (Gutermuth+, 2009)
J/ApJS/181/227 : Catalog of 24um sources toward Galactic Center (Hinz+, 2009)
J/ApJ/674/336 : Spitzer observations of NGC 1333 (Gutermuth+, 2008)
J/AJ/136/2413 : Galactic midplane Spitzer red sources (Robitaille+, 2008)
http://irsa.ipac.caltech.edu/ : Infrared Science Archive (IRSA)
Byte-by-byte Description of file: table2.dat
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Bytes Format Units Label Explanations
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1- 10 A10 --- Tile Identification of the MIPSGAL mosaic field (tile)
12- 17 F6.3 arcsec oRA Applied offset in Right Ascension ΔR.A
19- 24 F6.3 arcsec oDE Applied offset in Declination ΔDecl
26- 30 F5.3 arcsec sRA Final rms residual in Right Ascension σR.A
32- 36 F5.3 arcsec sDE Final rms residual in Declination σDecl
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Byte-by-byte Description of file: table3.dat
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Bytes Format Units Label Explanations
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1- 4 A4 --- f_Region Flag on Region
5 I1 --- Region [1/3]? Number of the region
7- 92 A86 --- Condition Conditions of confusion (1)
94- 98 I5 --- Nwo Number of sources without GLIMPSE counterparts
100-105 I6 --- Nw Number of sources with GLIMPSE counterparts
107-111 F5.3 --- Ratio [0.09/0.6] Nwo/Nw ratio
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Note (1): dNN is the nearest neighbor distance, and Δ is the
difference in magnitude with this nearest neighbor.
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Byte-by-byte Description of file: catalog.dat, archive.dat
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Bytes Format Units Label Explanations
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1- 18 A18 --- MIPSGAL MIPSGAL name
20- 29 F10.6 deg GLON Galactic longitude
31- 39 F9.6 deg GLAT Galactic latitude
41- 50 F10.6 deg RAdeg Right Ascension, in decimal degrees (J2000)
52- 61 F10.6 deg DEdeg Declination, in decimal degrees (J2000)
63- 70 F8.3 mJy S24 [0.3/9659] 24µm flux density
72- 78 F7.3 mJy e_S24 [0.08/951] 1σ uncertainty in S24
80- 84 F5.2 mag [24] [-0.3/11] 24µm magnitude (Vega)
86- 89 F4.2 mag e_[24] [0.02/0.33] 1σ uncertainty in [24]
91-107 A17 --- 2MASS ? 2MASS name (HHMMSSss+DDMMSSs, Cat. II/246)
109-118 F10.3 mJy SJ [0.1/522464]? 2MASS J-band flux density
120-129 F10.3 mJy e_SJ ? 1σ uncertainty in SJ
131-140 F10.3 mJy SH [0.2/756530]? 2MASS H-band flux density
142-151 F10.3 mJy e_SH ? 1σ uncertainty in SH
153-162 F10.3 mJy SK [0.4/643861]? 2MASS Ks-band flux density
164-173 F10.3 mJy e_SK ? 1σ uncertainty in SK
175-191 A17 --- GLIMPSE ? GLIMPSE name (GLLL.llll+BB.bbbb, Cat. II/293)
193-201 F9.3 mJy S3.6 [0.1/13445]? Spitzer/IRAC 3.6µm flux density
203-210 F8.3 mJy e_S3.6 ? 1σ uncertainty in S3.6
212-220 F9.3 mJy S4.5 [0.1/21328]? Spitzer/IRAC 4.5µm flux density
222-229 F8.3 mJy e_S4.5 ? 1σ uncertainty in S4.5
231-239 F9.3 mJy S5.8 [0.5/30754]? Spitzer/IRAC 5.8µm flux density
241-248 F8.3 mJy e_S5.8 ? 1σ uncertainty in S5.8
250-257 F8.3 mJy S8.0 [0.3/6019]? Spitzer/IRAC 8.0µm flux density
259-277 A19 --- WISE ? WISE name (JHHMMSS.ss+DDMMSS.s, Cat. I/311)
279-287 F9.3 mJy S3.4 [0.04/49559]? WISE/W1 (3.35µm) flux density
289-297 F9.3 mJy e_S3.4 ? 1σ uncertainty in S3.4
299-307 F9.3 mJy S4.6 [0.03/50979]? WISE/W2 (4.6µm) flux density
309-317 F9.3 mJy e_S4.6 ? 1σ uncertainty in S4.6
319-328 F10.3 mJy S12 [0.2/167766]? WISE/W3 (11.6µm) flux density
330-337 F8.3 mJy e_S12 ? 1σ uncertainty in S12
339-347 F9.3 mJy S22 [1/41761]? WISE/W4 (22.1µm) flux density
349-356 F8.3 mJy e_S22 ? 1σ uncertainty in S22
358-363 F6.3 mag Jmag [1.2/17.6]? 2MASS J-band magnitude (Vega)
365-369 F5.3 mag e_Jmag ? 1σ uncertainty in Jmag (Vega)
371-376 F6.3 mag Hmag [0.2/16.5]? 2MASS H band magnitude (Vega)
378-382 F5.3 mag e_Hmag ? 1σ uncertainty in Hmag (Vega)
384-389 F6.3 mag Kmag [-0.05/15.4]? 2MASS Ks band magnitude (Vega)
391-395 F5.3 mag e_Kmag ? 1σ uncertainty in Kmag (Vega)
397-402 F6.3 mag [3.6] [3/16]? Spitzer/IRAC 3.6µm magnitude (Vega)
404-408 F5.3 mag e_[3.6] ? 1σ uncertainty in [3.6]
410-415 F6.3 mag [4.5] [2/16]? Spitzer/IRAC 4.5µm magnitude (Vega)
417-421 F5.3 mag e_[4.5] ? 1σ uncertainty in [4.5]
423-428 F6.3 mag [5.8] [1/14]? Spitzer/IRAC 5.8µm magnitude (Vega)
430-434 F5.3 mag e_[5.8] ? 1σ uncertainty in [5.8]
436-441 F6.3 mag [8.0] [2/14]? Spitzer/IRAC 8.0µm magnitude (Vega)
443-447 F5.3 mag e_[8.0] ? 1σ uncertainty in [8.0]
449-454 F6.3 mag W1mag [1.9/17.1]? WISE/W1 (3.35um) magnitude (Vega)
456-460 F5.3 mag e_W1mag ? 1σ uncertainty in W1mag (Vega)
462-467 F6.3 mag W2mag [1.3/17]? WISE/W2 (4.6µm) magnitude (Vega)
469-473 F5.3 mag e_W2mag ? 1σ uncertainty in W2mag (Vega)
475-480 F6.3 mag W3mag [-2/13]? WISE/W3 (11.6um) magnitude (Vega)
482-486 F5.3 mag e_W3mag ? 1σ uncertainty in W3mag (Vega)
488-493 F6.3 mag W4mag [-1.8/9.6]? WISE/W4 (22.1um) magnitude (Vega)
495-499 F5.3 mag e_W4mag ? 1σ uncertainty in W4mag (Vega)
501-506 F6.2 arcsec dNN [0.3/221] Nearest neighbor distance
508 I1 --- NG [0/9]? Number of GLIMPSE sources within 6.35''
aperture
510 I1 --- N2M [0/8] Number of 2MASS sources within 6.35''
aperture
512 I1 --- NW [0/3] Number of WISE sources within 6.35''
aperture
514-518 F5.2 arcsec FWHM [-1.3/15.1] Empirically measured Full Width at
Half Maximum of the MIPSGAL source
520-527 F8.3 MJy/sr Sky [4.9/1926] Background flux density measured in
the sky annulus
529-536 F8.3 mJy lim1 [1.2/5799]? 90% differential completeness
limit (in mJy)
538-542 F5.3 mag lim2 [0.25/9.5]? 90% differential completeness
limit, VEGAMAG (magnitude at which 90% of
the sources are successfully recovered)
544 I1 --- F1 [0/1] Edge flag, 0 for catalog sources (1)
546 I1 --- F2 [0/3] Confusion flag, 0 for catalog sources (2)
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Note (1): this flag is set to 1 when the aperture overlaps with a masked
out area of the MIPSGAL tiles, such as saturated areas or coverage edges.
This flag can be non-zero for archive sources only.
Note (2): 0 indicates an unconfused source (all sources in catalog).
The values 1, 2 or 3 denote which of the three criteria in table3
apply to the source.
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History:
* 26-Feb-2015: From electronic version of the journal
* 22-May-2015: catalog.dat and archive.dat copied at
http://irsa.ipac.caltech.edu/cgi-bin/Gator/nph-scan?mission=irsa
(End) Sylvain Guehenneux [CDS] 26-Feb-2015