J/ApJS/185/124 58 radio sources near BNGSs (Stalder+, 2009)
58 radio sources near bright natural guide stars.
Stalder B., Chambers K.C., Vacca W.D.
<Astrophys. J. Suppl. Ser., 185, 124-155 (2009)>
=2009ApJS..185..124S 2009ApJS..185..124S
ADC_Keywords: Radio sources ; Photometry, UBVRI ; Photometry, infrared
Keywords: galaxies: evolution - galaxies: formation -
galaxies: fundamental parameters - galaxies: high-redshift
Abstract:
We present a preliminary survey of 58 radio sources within the
isoplanatic patches (r<25") of bright (11<R<12) stars suitable for
use as natural guide stars with high-order adaptive optics (AO).
An optical and near-infrared imaging survey was conducted utilizing
tip-tilt corrections in the optical and AO in the near-infrared.
Spectral energy distributions were fit to the multi-band data for
the purpose of obtaining photometric redshifts using the Hyperz
code. Several of these photometric redshifts were confirmed with
spectroscopy, a result that gives more confidence to the redshift
distribution for the whole sample. Additional long-wavelength data
from Spitzer, SCUBA, SHARC2, and VLA supplement the optical and
near-infrared data. We find the sample generally follows and extends
the magnitude-redshift relation found for more powerful local radio
galaxies. The survey has identified several reasonably bright
(H=19-20) objects at significant redshifts (z>1) that are now within
the capabilities of the current generation of AO-fed integral-field
spectrographs. These objects constitute a unique sample that can be
used for detailed ground-based AO studies of galactic structure,
evolution, and active galactic nucleus formation at high redshift.
Description:
The broadband optical imaging data of the FIRST-BNGS (Bright Natural
Guide Star) sample were obtained with the Orthogonal Parallel Transfer
Imaging Camera (OPTIC) mounted at the f/10 focus of the University of
Hawaii 2.2m (UH2.2m) telescope and at the Nasmyth focus of the
Wisconsin, Indiana, Yale, NOAO (WIYN) 3m telescope at Kitt Peak
National Observatory. Data were taken on about 50 nights between 2002
December and 2005 April (Table 2). For the NIR survey, our strategy
was to obtain at least H-band photometry for the entire sample using
the 3.6m Canada-France-Hawaii Telescope (CFHT) with the Pueo AO
bonnette and KIR infrared detector.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table1.dat 96 64 Object positions
table2.dat 51 27 OPTIC and NIR observations
table4.dat 113 64 OPTIC and NIR photometric data
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See also:
I/252 : The USNO-A2.0 Catalogue (Monet+ 1998)
VIII/71 : The FIRST Survey Catalog, Version 03Apr11 (Becker+ 2003)
Byte-by-byte Description of file: table1.dat
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Bytes Format Units Label Explanations
--------------------------------------------------------------------------------
1- 2 I2 --- Seq Running sequence number
3 A1 --- m_Seq [abc] Multiple sequence number
differenciation
4 A1 --- n_Seq [*] Addition at CDS (1)
5- 16 A12 --- FIRST FIRST identification (FHHMM+DDMMWW) (2)
18- 19 I2 h RAh Radio Hour of right ascension (J2000)
21- 22 I2 min RAm Radio Minute of right ascension (J2000)
24- 29 F6.3 s RAs Radio Second of right ascension (J2000)
31 A1 --- DE- Radio Sign of declination (J2000)
32- 33 I2 deg DEd Radio Degree of declination (J2000)
35- 36 I2 arcmin DEm Radio Arcminute of declination (J2000)
38- 42 F5.2 arcsec DEs Radio Arcsecond of declination (J2000)
44- 56 A13 --- USNOA2 USNO-A2.0 identification (NNNN-NNNNNNNN)
58- 61 F4.1 mag Rmag ? R band magnitude
63- 65 F3.1 mag B-R ? B-R color index
67- 72 F6.2 arcsec RAoff ? Right ascension offset of optical source (3)
74- 79 F6.2 arcsec DEoff ? Declination offset of optical source (3)
81- 85 F5.2 arcsec Off ? Total offset
87- 89 I3 --- bII ? Galactic latitude
91- 96 F6.2 mJy Sint ? Integrated flux at 1.4GHz
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Note (1): * = F1217-0529S added by CDS; coordinates of USNOA2.
(Only one source FIRST J121719.7-052920 in Cat. VIII/71)
Note (2): FIRST-BNGS JHHMM+DDMMWW in Simbad.
Note (3): corrected for proper motion in 2005.
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Byte-by-byte Description of file: table2.dat
--------------------------------------------------------------------------------
Bytes Format Units Label Explanations
--------------------------------------------------------------------------------
1- 7 A7 --- Tel Telescope
9- 16 A8 --- Inst Instrument
18- 27 A10 --- Filt Filters
29- 38 A10 "YYYY/MM/DD" ObsDate Observation date (UT)
39 A1 --- --- [-]
40- 41 I2 d Datefin ? Final date of observation (DD)
43- 51 A9 arcsec FWHM Corrected FWHM range in the observed band
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Byte-by-byte Description of file: table4.dat
--------------------------------------------------------------------------------
Bytes Format Units Label Explanations
--------------------------------------------------------------------------------
1- 2 I2 --- Seq Running sequence number
3 A1 --- m_Seq [abc] Multiple sequence number differenciation
5- 16 A12 --- FIRST FIRST identification (FHHMM+DDMMWW)
17 A1 --- f_FIRST [ab*] Object flag (1)
19 A1 --- l_Bmag Bmag limit flag
20- 24 F5.2 mag Bmag ? B band magnitude
26- 29 F4.2 mag e_Bmag ? Bmag uncertainty
31 A1 --- l_Vmag Vmag limit flag
32- 36 F5.2 mag Vmag ? V band magnitude
38- 41 F4.2 mag e_Vmag ? Vmag uncertainty
43 A1 --- l_Rmag Rmag limit flag
44- 48 F5.2 mag Rmag ? R band magnitude
50- 53 F4.2 mag e_Rmag ? Rmag uncertainty
55 A1 --- l_Imag Imag limit flag
56- 60 F5.2 mag Imag ? I band magnitude
62- 65 F4.2 mag e_Imag ? Imag uncertainty
67 A1 --- l_z'mag z'mag limit flag
68- 72 F5.2 mag z'mag ? z' band magnitude
74- 77 F4.2 mag e_z'mag ? z'mag uncertainty
79 A1 --- l_Jmag Jmag limit flag
80- 84 F5.2 mag Jmag ? J band magnitude
86- 89 F4.2 mag e_Jmag ? J mag uncertainty
91 A1 --- l_Hmag Hmag limit flag
92- 96 F5.2 mag Hmag ? H band magnitude
98-101 F4.2 mag e_Hmag ? Hmag uncertainty
103 A1 --- l_Kmag Kmag limit flag
104-108 F5.2 mag Kmag ? K band magnitude
110-113 F4.2 mag e_Kmag ? Kmag uncertainty
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Note (1): Flags as follows:
a = Multiple source, possibly an interacting system
b = ID unclear
* = F1435-0029 corrected into F1435-0019 by CDS.
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History:
From electronic version of the journal
(End) Emmanuelle Perret [CDS] 01-Jun-2010