J/ApJS/119/189 Deep Multicolor Survey. IV. (Osmer+ 1998)
A Deep Multicolor Survey. IV. The Electronic Stellar Catalog
Osmer P.S., Kennefick, J.D., Hall P.B., Green R.F.
<Astrophys. J. Suppl. Ser. 119, 189 (1998)>
=1998ApJS..119..189O 1998ApJS..119..189O
ADC_Keywords: QSOs ; Galaxies, photometry ; Surveys
Keywords: catalogs - galaxies: compact - quasars: general - stars:
general - surveys
Description:
This stellar catalog contains 19,494 objects from the Deep Multicolor
Survey (DMS) and results from follow-up spectroscopic observations of
234 objects in the catalog. The DMS is based on CCD imaging with the
Mayall 4 m telescope in U, B, V, R', I75, and I86 and covers 0.83
deg^2 in six fields at high Galactic latitude. The survey reached 5
sigma limiting magnitudes of 22.1 in I86 to 23.8 in B. The catalog
gives positions, magnitudes and error estimates, and classification
codes in the six filter bands for all the objects. In addition, the
survey is useful for the study of faint field galaxies and of faint
stars at high Galactic latitude. Presented are tables that summarize
the spectroscopic results for the 55 quasars, 44 compact narrow
emission-line galaxies, and 135 stars in the DMS that we have
confirmed to date. Also included are illustrations of all the spectra.
File Summary:
--------------------------------------------------------------------------------
FileName Lrecl Records Explanations
--------------------------------------------------------------------------------
ReadMe 80 . This file
field01h.dat 190 2299 Field 01h of the Deep Multicolor Survey
field10h.dat 190 1441 Field 10h of the Deep Multicolor Survey
field14h.dat 190 3528 Field 14h of the Deep Multicolor Survey
field17h.dat 190 4417 Field 17h of the Deep Multicolor Survey
field21h.dat 190 4462 Field 21h of the Deep Multicolor Survey
field22h.dat 190 3347 Field 22h of the Deep Multicolor Survey
table1.dat 113 55 Spectroscopically Identified Quasars
table1.ps 72 732 Postscript version of table1
table2.dat 113 44 Spectroscopically Identified Compact Narrow
Emission-Line Galaxies
table2.ps 72 641 Postscript version of table2
table3.dat 137 135 Spectroscopically Identified Stars
table3.ps 72 1051 Postscript version of table3
fig1.ps 88 1895 *Observed differential source counts
fig2.ps 80 2007 *Log of the cumulative source counts
fig3.ps 80 19963 V vs. B-V color-magnitude diagram for the
stellar objects on the DMS
--------------------------------------------------------------------------------
Note on fig1.ps and fig2.ps:
Counts for the stellar objects in three different filters: B, V, R'
See also:
J/ApJS/104/185 : A deep multicolor survey. I. (Hall+ 1996)
J/ApJ/462/614 : A deep multicolor survey. II (Hall+ 1996)
J/AJ/114/2269 : A deep multicolor survey. III (Kennefick+ 1997)
Byte-by-byte Description of file: field*.dat
--------------------------------------------------------------------------------
Bytes Format Units Label Explanations
--------------------------------------------------------------------------------
1- 4 I4 --- No Sequential number
6- 8 A3 --- Field Field designation
10- 11 I2 h RAh Right ascension (1950.0)
13- 14 I2 min RAm Right ascension (1950.0)
16- 20 F5.2 s RAs Right ascension (1950.0)
22 A1 --- DE- Declination sign
23- 24 I2 deg DEd Declination (1950.0)
26- 27 I2 arcmin DEm Declination (1950.0)
29- 33 F5.2 arcsec DEs Declination (1950.0)
35- 41 F7.2 pix x x coordinates on the image
43- 49 F7.2 pix y y coordinates on the image
51- 56 F6.3 mag Umag U magnitude
58- 63 F6.3 mag e_Umag *[-.333,.333] error estimate for U magnitude
65- 70 F6.3 mag Bmag B magnitude
72- 77 F6.3 mag e_Bmag *[-.333,.333] error estimate for B magnitude
79- 84 F6.3 mag Vmag V magnitude
86- 91 F6.3 mag e_Vmag *[-.333,.333] error estimate for V magnitude
93- 98 F6.3 mag Rmag R magnitude
100-105 F6.3 mag e_Rmag *[-.333,.333] error estimate for R magnitude
107-112 F6.3 mag I75mag I75 magnitude
114-119 F6.3 mag e_I75mag *[-.333,.333] error estimate for I75 magnitude
121-126 F6.3 mag I86mag I86 magnitude
128-133 F6.3 mag e_I86mag *[-.333,.333] error estimate for I86 magnitude
135-136 A2 --- u1 *U magnitude filter classification code
138-139 A2 --- u2 *U magnitude image classification code
141-142 A2 --- b1 *B magnitude filter classification code
144-145 A2 --- b2 *B magnitude image classification code
147-148 A2 --- v1 *V magnitude filter classification code
150-151 A2 --- v2 *V magnitude image classification code
153-154 A2 --- r1 *R magnitude filter classification code
156-157 A2 --- r2 *R magnitude image classification code
159-160 A2 --- i1 *I75 magnitude filter classification code
162-163 A2 --- i2 *I75 magnitude image classification code
165-166 A2 --- I1 *I86 magnitude filter classification code
168-169 A2 --- I2 *I86 magnitude image classification code
171-190 A20 --- Comments *Comments on individual objects
-------------------------------------------------------------------------------
Note on e_Umag, e_Bmag, e_Vmag, e_Rmag, e_I75mag, e_I86mag:
Error of 0.333 mag means that the magnitude value corresponds to the 3 sigma
limit for that object. Also, an error value of -0.333 indicates that the
object should have been detected in one of the frames but was not. Thus the
measurement is being flagged as possibly subject to a non-statistical error.
Note on u1, u2, b1, b2, v1, v2, r1, r2, i1, i2, I1, I2:
Refer to object classification codes from FOCAS for each filter and image.
The codes are: s = star
sf = fuzzy star
Fs = forced star
g = galaxy
n = noise
d = diffuse object
l = long object
u = unknown (not detected by FOCAS in both images
of that field)
x = no image available
When an object was classified as a star in either or both images of
a field, its classification was forced to star in each image - thus
the Fs classification. No information was retained on the original
classification in each image. An exception is objects
used as PSF templates; these objects already had a "forced" flag
present in FOCAS, and so the original classification was not
overwritten. Most cases of "s" or "sf" in the catalog are objects
of this sort. The other exceptions are all filters in the
01e and the B filter in the 10e field, for which only one image
was available. In these cases, the classifications given are
the original FOCAS classifications.
Note on Comments:
Contains comments on individual objects.
The codes are: q = quasar
c = CNELG (compact narrow emission-line galaxy)
s = star
u = unknown (spectrum has too low S/N ratio to classify)
The number following "q" or "c" is the redshift, with a "?" indicating an
uncertain or unknown redshift. Other codes include "cr" for cosmic ray and
"bp" for bad pixel followed by a filter and/or offset image code; i.e.,
"cr,u1" means a cosmic ray contaminates the object in the first U image.
--------------------------------------------------------------------------------
Byte-by-byte Description of file: table1.dat, table2.dat
--------------------------------------------------------------------------------
Bytes Format Units Label Explanations
--------------------------------------------------------------------------------
1- 14 A14 --- Name Quasars (table1.dat) and CNELG (table2.dat)
16- 23 A8 --- ID Running number for the object and
field identifier
25- 29 F5.3 --- z ? Redshift
30 A1 --- u_z [?] Uncertainty flag on z
31- 36 F6.3 mag Umag U magnitude
38- 43 F6.3 mag e_Umag *[-.333,.333] error estimate for U magnitude
45- 50 F6.3 mag Bmag B magnitude
52- 57 F6.3 mag e_Bmag *[-.333,.333] error estimate for B magnitude
59- 64 F6.3 mag Vmag V magnitude
66- 71 F6.3 mag e_Vmag *[-.333,.333] error estimate for V magnitude
73- 78 F6.3 mag Rmag R magnitude
80- 85 F6.3 mag e_Rmag *[-.333,.333] error estimate for R magnitude
87- 92 F6.3 mag I75mag I75 magnitude
94- 99 F6.3 mag e_I75mag *[-.333,.333] error estimate for I75 magnitude
101-106 F6.3 mag I86mag I86 magnitude
108-113 F6.3 mag e_I86mag *[-.333,.333] error estimate for I86 magnitude
--------------------------------------------------------------------------------
Note on e_Umag, e_Bmag, e_Vmag, e_Rmag, e_I75mag, e_I86mag:
Error of 0.333 mag means that the magnitude value corresponds to the 3 sigma
limit for that object. Also, an error value of -0.333 indicates that the
object should have been detected in one of the frames but was not. Thus the
measurement is being flagged as possibly subject to a non-statistical error.
--------------------------------------------------------------------------------
Byte-by-byte Description of file: table3.dat
--------------------------------------------------------------------------------
Bytes Format Units Label Explanations
--------------------------------------------------------------------------------
1- 8 A8 --- ID Catalog Identification number
10- 15 F6.3 mag Umag U magnitude
17- 22 F6.3 mag e_Umag *[-.333,.333] error estimate for U magnitude
24- 29 F6.3 mag Bmag B magnitude
31- 36 F6.3 mag e_Bmag *[-.333,.333] error estimate for B magnitude
38- 43 F6.3 mag Vmag V magnitude
45- 50 F6.3 mag e_Vmag *[-.333,.333] error estimate for V magnitude
52- 57 F6.3 mag Rmag R magnitude
59- 64 F6.3 mag e_Rmag *[-.333,.333] error estimate for R magnitude
66- 71 F6.3 mag I75mag I75 magnitude
73- 78 F6.3 mag e_I75mag *[-.333,.333] error estimate for I75 magnitude
80- 85 F6.3 mag I86mag I86 magnitude
87- 92 F6.3 mag e_I86mag *[-.333,.333] error estimate for I86 magnitude
94-137 A44 --- Comments Comments on the spectral features or
type of the star
-------------------------------------------------------------------------------
Note on e_Umag, e_Bmag, e_Vmag, e_Rmag, e_I75mag, e_I86mag:
Error of 0.333 mag means that the magnitude value corresponds to the 3 sigma
limit for that object. Also, an error value of -0.333 indicates that the
object should have been detected in one of the frames but was not. Thus the
measurement is being flagged as possibly subject to a non-statistical error.
--------------------------------------------------------------------------------
Acknowledgements:
Copied in May 1999 from ftp://ftp.astronomy.ohio-state.edu/pub/posmer/DMS4/
Patrick S. Osmer
(End) Gail L. Schneider [ADC/SSDOO] 11-Jun-1999