II/293 GLIMPSE Source Catalog (I + II + 3D) (IPAC 2008)
Galactic Legacy Infrared Mid-Plane Survey Extraordinaire (GLIMPSE)
Spitzer Science Center
<IPAC, Caltech (2008)>
=2009yCat.2293....0S 2009yCat.2293....0S
ADC_Keywords: Infrared sources ; Photometry, infrared ; Surveys ; Milky Way
Mission_Name: Spitzer
Description:
The Galactic Legacy Infrared Midplane Survey Extraordinaire (GLIMPSE),
is a survey of Galactic Plane central parts made with the Infrared
Array Camera (IRAC) aboard the Spitzer Space Telescope (SST). It
covers approximately 220 square degrees, between galactic longitudes
±65° and ±1° in galactic latitude (up to 4.2° in the
central parts). The four IRAC bands are centered at approximately
3.6, 4.5, 5.8 and 8.0µm.
The GLIMPSE combines the 3 surveys:
* GLIMPSE-I covers the longitude ranges |l|=10--65° and the
latitude range |b|≤1° (Benjamin et al. 2003PASP..115..953B 2003PASP..115..953B)
* GLIMPSE-II covers the longitude range of |l|≤10°, and a
latitude range |b|≤1° from |l|=5--10, |b|≤1.5 for |l|=2--5,
and |b|≤2° for |l|≤2. GLIMPSE-II coverage excludes the
Galactic center region |l|≤1, |b|≤0.75 observed by the GALCEN
GO program (PID=3677).
* GLIMPSE-3D adds vertical extensions up to |b|=4.2° near the
galactic center, and up to |b|=3° in selected other parts
of the Galaxy (±10, 18.5, 25, 30, and -15 (345)°).
GLIMPSE-II had two-epoch coverage for a total of three visits on the
sky. The observations consisted of two 1.2 second integrations at each
position in the first epoch of data taking (September 2005) and a
single 1.2 second integration at each position six months later
(April 2006).
The highly reliable v2.0 GLIMPSEII Catalog (v2.0_GLMIIC) consists of
point sources that are detected at least twice in one band and at
least once in an adjacent band and a S/N > 5 cut for the band with the
two detections. There are also faint and bright flux limits on the
Catalog entries. The more complete v2.0 Archive (v2.0_GLMIIA) has less
stringent criteria, namely two detections in any bands, those
detections having a S/N > 5. The IRAC data were bandmerged with the
2MASS All-Sky Point Source Catalog. See the GLIMPSEII v2.0 Data
Products & Data Delivery document for more details.
The catalog available from CDS merges the 3 surveys GLIMPSE-I (v2.0),
GLIMPSE-II (v2.0), and GLIMPSE-3D; Catalog and Archive records are
also merged here. In the regions of overlap between the 3 surveys
(e.g. longitude around 10°) preference was given to
(1) GLIMPSE-II, as recommended in the GLIMPSE documents of May 2007
(glimpse1_v2.0.pdf) and April 2008 (glimpse2-v2.0.pdf);
(2) GLIMPSE-I, and (3) GLIMPSE-3D sources. Sources from different
surveys were merged if their position is closer than 0.1arcsec.
Documents and a document describing in detail the point source
photometry steps, see http://www.astro.wisc.edu/glimpse/docs.html
File Summary:
--------------------------------------------------------------------------------
FileName Lrecl Records Explanations
--------------------------------------------------------------------------------
ReadMe 80 . This file
glimpse.sam 578 1000 Sample of GLIMPSE sources in Galactic Center
--------------------------------------------------------------------------------
See also:
II/246 : 2MASS All-Sky Catalog of Point Sources (2MASS-C) (Cutri+ 2003)
http://irsa.ipac.caltech.edu/data/SPITZER/GLIMPSE : GLIMPSE home page
http://data.spitzer.caltech.edu/ : Access to Spitzer data
Byte-by-byte Description of file: glimpse.sam
--------------------------------------------------------------------------------
Bytes Format Units Label Explanations
--------------------------------------------------------------------------------
1- 17 A17 --- GLIMPSE [G+.0-9-] Source name (GLLL.llll+BB.bbbb)
19- 28 F10.6 deg RAdeg Right ascension J2000, degrees
30- 39 F10.6 deg DEdeg Declination J2000, degrees
41- 41 I1 --- S [123] Survey: 1=GLIMPSE-I, 2=GLIMPSE-II, and
3=GLIPMSE-3D
43- 43 A1 --- C [CA] High-reliability sources are marked 'C'
(Catalog part, with S/N>5).
45- 60 A16 --- 2MASS 2MASS-PSC name JHHMMSSss+DDMMSSs (Cat. II/246)
62- 62 A1 --- m_2MASS Multiplicity on 2MASS name (in 3D survey only)
64- 73 I10 --- 2Mkey ? Unique source identifier (Cntr) in 2MASS
75- 84 F10.6 deg Glon Galactic longitude of source
86- 94 F9.6 deg Glat Galactic latitude of source
96- 98 F3.1 arcsec e_Glon error in Galactic longitude
100-102 F3.1 arcsec e_Glat error in Galactic latitude
104-106 F3.1 arcsec e_RAdeg error in Right ascension
108-110 F3.1 arcsec e_DEdeg error in Declination
112-112 I1 --- csf [0/6] close source flag (1)
114-119 F6.3 mag Jmag ? 2MASS-PSC J-band magnitude (1.25um)
121-125 F5.3 mag e_Jmag ? 1-σ error on Jmag
127-132 F6.3 mag Hmag ? 2MASS-PSC H-band magnitude (1.65um)
134-138 F5.3 mag e_Hmag ? 1-σ error on Hmag
140-145 F6.3 mag Kmag ? 2MASS-PSC Ks-band magnitude (2.17um)
147-151 F5.3 mag e_Kmag ? 1-σ error on Ksmag
153-158 F6.3 mag 3.6mag ? 3.6um IRAC (Band 1) magnitude
160-164 F5.3 mag e_3.6mag ? 1-σ error on 3.6mag
166-171 F6.3 mag 4.5mag ? 4.5um IRAC (Band 2) magnitude
173-177 F5.3 mag e_4.5mag ? 1-σ error on 4.5mag
179-184 F6.3 mag 5.8mag ? 5.8um IRAC (Band 1) magnitude
186-190 F5.3 mag e_5.8mag ? 1-σ error on 5.8mag
192-197 F6.3 mag 8.0mag ? 8.0um IRAC (Band 1) magnitude
199-203 F5.3 mag e_8.0mag ? 1-σ error on 8.0mag
205-212 E8.3 mJy F(J) ? 2MASS-PSC J-band flux (1.25um)
214-221 E8.3 mJy e_F(J) ? 1-σ error on F(J)
223-230 E8.3 mJy F(H) ? 2MASS-PSC H-band flux (1.65um)
232-239 E8.3 mJy e_F(H) ? 1-σ error on F(H)
241-248 E8.3 mJy F(Ks) ? 2MASS-PSC Ks-band flux (2.17um)
250-257 E8.3 mJy e_F(Ks) ? 1-σ error on F(Ks)
259-266 E8.3 mJy F(3.6) ? 3.6um IRAC (Band 1) flux
268-275 E8.3 mJy e_F(3.6) ? 1-σ error on F(3.6)
277-284 E8.3 mJy F(4.5) ? 4.5um IRAC (Band 2) flux
286-293 E8.3 mJy e_F(4.5) ? 1-σ error on F(4.5)
295-302 E8.3 mJy F(5.8) ? 5.8um IRAC (Band 3) flux
304-311 E8.3 mJy e_F(5.8) ? 1-σ error on F(5.8)
313-320 E8.3 mJy F(8.0) ? 8.0um IRAC (Band 4) flux
322-329 E8.3 mJy e_F(8.0) ? 1-σ error on F(8.0)
331-339 E9.3 mJy rms(3.6) ? rms deviation from final 3.6um flux (2)
341-349 E9.3 mJy rms(4.5) ? rms deviation from final 4.5um flux (2)
351-359 E9.3 mJy rms(5.8) ? rms deviation from final 5.38m flux (2)
361-369 E9.3 mJy rms(8.0) ? rms deviation from final 8.0um flux (2)
371-379 E9.3 MJy/sr sky(3.6) ? Local sky background at 3.6um
381-389 E9.3 MJy/sr sky(4.5) ? Local sky background at 4.5um
391-399 E9.3 MJy/sr sky(5.8) ? Local sky background at 5.8um
401-409 E9.3 MJy/sr sky(8.0) ? Local sky background at 8.0um
411-415 F5.2 --- Jsn ? 2MASS-PSC J-band Signal/Noise ratio
417-421 F5.2 --- Hsn ? 2MASS-PSC H-band Signal/Noise ratio
423-427 F5.2 --- Ksn ? 2MASS-PSC Ks-band Signal/Noise ratio
429-433 F5.2 --- 3.6sn ? IRAC 3.6um band Signal/Noise
435-439 F5.2 --- 4.5sn ? IRAC 4.5um band Signal/Noise
441-445 F5.2 --- 5.8sn ? IRAC 5.8um band Signal/Noise
447-452 F6.2 --- 8.0sn ? IRAC 8.0um band Signal/Noise
454-458 F5.1 arcmin-2 d(3.6) ? Local source density at 3.6um
460-464 F5.1 arcmin-2 d(4.5) ? Local source density at 4.5um
466-470 F5.1 arcmin-2 d(5.8) ? Local source density at 5.8um
472-475 F4.1 arcmin-2 d(8.0) ? Local source density at 8.0um
477-478 I2 --- N(3.6) ? Number of detections in 3.6um IRAC band
480-481 I2 --- N(4.5) ? Number of detections in 4.5um IRAC band
483-484 I2 --- N(5.8) ? Number of detections in 5.8um IRAC band
486-487 I2 --- N(8.0) ? Number of detections in 8.0um IRAC band
489-490 I2 --- n(3.6) ? Number of possible detections in 3.6um band
492-493 I2 --- n(4.5) ? Number of possible detections in 4.5um band
495-496 I2 --- n(5.8) ? Number of possible detections in 5.8um band
498-499 I2 --- n(8.0) ? Number of possible detections in 8.0um band
501-508 A8 --- q_Jmag ? [0-9a-f] 2MASS-PSC Quality Flag (3)
510-517 A8 --- q_Hmag ? [0-9a-f] 2MASS-PSC Quality Flag (3)
519-526 A8 --- q_Kmag ? [0-9a-f] 2MASS-PSC Quality Flag (3)
528-535 A8 --- q_3.6mag ? [0-9a-f] 3.6um IRAC Quality Flag (3)
537-544 A8 --- q_4.5mag ? [0-9a-f] 4.5um IRAC Quality Flag (3)
546-553 A8 --- q_5.8mag ? [0-9a-f] 5.8um IRAC Quality Flag (3)
555-562 A8 --- q_8.0mag ? [0-9a-f] 8.0um IRAC Quality Flag (3)
564-566 A3 --- m(3.6) ? [0-9a-f] Method used for 3.6um flux (4)
568-570 A3 --- m(4.5) ? [0-9a-f] Method used for 4.5um flux (4)
572-574 A3 --- m(5.8) ? [0-9a-f] Method used for 5.8um flux (4)
576-578 A3 --- m(8.0) ? [0-9a-f] Method used for 8.0um flux (4)
--------------------------------------------------------------------------------
Note (1): The close source flag is set if there are Archive sources that
are within 3arcsec of the source:
0 = no Archive source within 3.0" of source
1 = Archive sources between 2.5" and 3.0" of source
2 = Archive sources between 2.0" and 2.5" of source
3 = Archive sources between 1.5" and 2.0" of source
4 = Archive sources between 1.0" and 1.5" of source
5 = Archive sources between 0.5" and 1.0" of source
6 = Archive sources within 0.5" of source
Note (2): deviation of individual detections from final flux
(large values may imply variability)
Note (3): the quality flag, written here in hexadecimal, describes
peculiarities which, if existing, contribute to 2b to the
quality flag: for instance, the value '2400' (9216 in decimal,
which is 210+213) means:
* DAOPHOT tweak negative (210)
* confusion in cross-band merge (213)
--------------------------------------------------------------------------
b Explanation Survey
--------------------------------------------------------------------------
0 poor pixels in dark current SSC pmask
1 flat field questionable SSC dmask
2 latent image (a) SSC dmask
2 persistence (p) 2MASS
3 photometric confusion (c) 2MASS
6 muxbleed correction applied GLIMPSE
7 hot, dead or otherwise unacceptable pixel SSC pmask,dmask,GLIMPSE
8 muxbleed correction applied is > 3 above bkg GLIMPSE
8 electronic stripe (s) 2MASS
9 DAOPHOT tweak positive GLIMPSE
10 DAOPHOT tweak negative GLIMPSE
12 confusion in in-band merge GLIMPSE
13 confusion in cross-band merge (IRAC) GLIMPSE
13 confusion in cross-band merge (2MASS) GLIMPSE
14 column pulldown corrected GLIMPSE
15 banding corrected GLIMPSE
16 stray light GLIMPSE
18 data predicted to saturate GLIMPSE
19 saturated star wing region GLIMPSE
19 diffraction spike (d) 2MASS
20 pre-lumping in in-band merge GLIMPSE
21 post-lumping in cross-band merge GLIMPSE
21 post-lumping in cross-band merge 2MASS
22 photometric quality flag (*) 2MASS
23 photometric quality flag (*) 2MASS
24 photometric quality flag (*) 2MASS
29 within three pixels of edge of frame GLIMPSE
31 flux in Archive but not in Catalog entry GLIMPSE (added at CDS)
--------------------------------------------------------------------------
(a) Due to the short exposure time and high sky backgrounds in the
GLIMPSEII fields, we have not seen evidence for latent sources
in the images, even though they are flagged via an automatic
algorithm in SSC's processing.
(*) the 2MASS quality is stored here on 3 bits, with
A (best): all three flags set to 1 (.1c..... in hexa)
B (2nd) : bit pattern 110 (.18..... in hexa)
C (3rd) : bit pattern 101 (.14..... in hexa)
D (4th) : bit pattern 100 (.10..... in hexa)
E (5th) : bit pattern 011 (.0c..... in hexa)
F (6th) : bit pattern 010 (.04..... in hexa)
--------------------------------------------------------------------------
Note (4): the method flag, written here in hexadecimal, describes
the combination of the existence and usage of the frames:
0 = Frame 0.6s present
1 = Frame 0.6s present and used
2 = Frame 1.2s present
3 = Frame 1.2s used for flux calculation
4 = Frame 2s present
5 = Frame 2s used for flux calculation
6 = Frame 12s present
7 = Frame 12s used for flux calculation
8 = Frame 30s present
9 = Frame 30s used for flux calculation
10 = Frame 100s present
11 = Frame 100s used for flux calculation
--------------------------------------------------------------------------------
Nomenclature Notes:
It is recommended to use the GPSC for the sources of GLIMPSE Catalog
(at least 2 detections with S/N≥5), and GPSA (Archive) for those not
meeting these criteria.
Objects in SIMBAD are (for catalog sources;
"C" in column C (S/N>5)) or (for archive sources;
"A" in column C).
History:
* 30-Aug-2024: format migration (CDS)
(End) Francois Ochsenbein [CDS] 12-Jun-2009