J/ApJ/600/L155 Gravitational lens in GOODS ACS fields (Fassnacht+, 2004)
Strong gravitational lens candidates in the GOODS ACS fields.
Fassnacht C.D., Moustakas L.A., Casertano S., Ferguson H.C., Lucas R.A.,
Park Y.
<Astrophys. J., 600, L155-L158 (2004)>
=2004ApJ...600L.155F 2004ApJ...600L.155F
ADC_Keywords: Galaxies, photometry ; Gravitational lensing ; Redshifts
Keywords: galaxies: general - galaxies: high-redshift - gravitational lensing -
surveys
Abstract:
We present results from a systematic search for strong gravitational
lenses in the Great Observatories Origins Deep Survey (GOODS) Advanced
Camera for Surveys (ACS) data. The search technique involves creating
a sample of likely lensing galaxies, which we define as massive
early-type galaxies in a redshift range 0.3<z<1.3. The target
galaxies are selected by color and magnitude, giving a sample of 1092
galaxies. For each galaxy in the sample, we subtract a smooth
description of the galaxy light from the z850-band data. The residuals
are examined, along with true-color images created from the
B435V606i775 data, for morphologies indicative of strong
lensing. We present our six most promising lens candidates as well as
our full list of candidates.
Description:
All candidate selection was done using the ACS data obtained in the
F435W, F606W, F775W, and F850LP filters (hereafter B435 (Bmag),
V606 (Vmag), i775 (Imag), and z850 (Zmag), respectively).
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table1.dat 74 48 Lens candidates
table2.dat 99 6 Parameters of Candidate Lens Galaxies
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See also:
J/ApJ/600/L99 : Colours of z∼6 galaxies in GOODS (Dickinson+, 2004)
Byte-by-byte Description of file: table1.dat table2.dat
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Bytes Format Units Label Explanations
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1- 3 A3 --- --- [GDS]
5- 18 A14 --- GDS Object identification (JHHMMSS+DDMMSS)
20- 21 I2 h RAh Hour of Right Ascension (J2000)
23- 24 I2 min RAm Minute of Right Ascension (J2000)
26- 31 F6.3 s RAs Second of Right Ascension (J2000)
33 A1 --- DE- Sign of the Declination (J2000)
34- 35 I2 deg DEd Degree of Declination (J2000)
37- 38 I2 arcmin DEm Arcminute of Declination (J2000)
40- 44 F5.2 arcsec DEs Arcsecond of Declination (J2000)
46- 50 F5.2 mag Bmag ?=99. The ACS F435W filter magnitude (1)
52- 56 F5.2 mag Vmag The ACS F606W filter magnitude (1)
58- 62 F5.2 mag Imag The ACS F775W filter magnitude (1)
64- 68 F5.2 mag Zmag The ACS F850LP filter magnitude (1)
70- 73 F4.2 --- z ? Photometric redshift (2)
75- 78 F4.2 arcsec thetaE ? Estimated Einstein ring radius (3)
80- 99 A20 --- Notes Notes (CI = counterimage) (3)
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Note (1): For table2,dat, magnitudes within an aperture of radius thetaE
Note (2): Determined as described in Mobasher et al. (2004ApJ...600L.143M 2004ApJ...600L.143M).
Photometric redshifts for the sources in the northern GOODS field
are being determined.
Note (3): Only in table2.dat
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History:
From electronic version of the journal
(End) Greg Schwarz [AAS], Patricia Vannier [CDS] 13-Feb-2004