J/PASJ/53/653 SSA 22 field NIR imaging (Tamura+, 2001)
NIR narrow- and broad-band study of the SSA 22 field.
Tamura N., Ohta K., Maihara T., Iwamuro F., Motohara K., Takata T., Iye M.
<Publ. Astron. Soc. Jap., 53, 653 (2001)>
=2001PASJ...53..653T 2001PASJ...53..653T
ADC_Keywords: Galaxies, photometry ; Photometry, infrared
Keywords: cosmology: observations - galaxies: evolution - galaxies: formation -
galaxies: starburst - infrared: galaxies
Abstract:
Deep narrow- and broad-band near-infrared imaging observations of the
central 2'x2' region of the SSA 22 field were made with the
near-infrared camera (CISCO) attached to the Subaru Telescope. Using a
narrow-band filter centered at 2.033µm, [O III] λ5007
emitters at z∼3.06±0.02 were searched to examine star-forming
activities in an over-density region where a clustering of Lyman Break
Galaxies (LBGs) and Lyman α emitter candidates around z=3.09 was
reported, though the targeted redshift is slightly different from that
of the peak of the over-density region. Although one emitter candidate
at z=3.06 was detected, it is likely to be located at a redshift of
between 1 and 2 judged based on multi-band photometry. Another
emission-line object was detected in another narrow-band filter (``off
band'' filter) centered at 2.120µm, which is identified with a
galaxy at z=0.132 (the emission line is Paschen α). The K'-band
imaging data revealed the presence of 12 Extremely Red Objects (EROs)
with I814-K'≥4. The distribution of the EROs does not seem to
coincide with that of Lyman Break Galaxies or Lyman α emitters
at z∼3. The magnitudes and colors of the EROs are not consistent with
those of passively evolving massive elliptical galaxies at z∼3.
Candidates for counterparts of the submm sources detected with SCUBA
are found; no EROs around the submm sources are found in our magnitude
limit.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table3.dat 112 141 List of objects detected in the K'-band image
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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- 3 I3 --- [TOM2001] [1/141] Identification number
5- 6 I2 h RAh Right ascension (1950)
8- 9 I2 min RAm Right ascension (1950)
11- 15 F5.2 s RAs Right ascension (1950)
17 A1 --- DE- Declination sign (1950)
18- 19 I2 deg DEd Declination (1950)
21- 22 I2 arcmin DEm Declination (1950)
24- 28 F5.2 arcsec DEs Declination (1950)
30- 33 F4.1 mag K'mag K' (1.96-2.30µm) magnitude (1)
35- 38 F4.1 mag N204 ? N204 (2.023-2.043µm) magnitude (1)
40- 43 F4.1 mag N212 ? N212 (2.110-2.130µm) magnitude (1)
45- 49 F5.2 mag U'AB ? U'AB magnitude (2)
51- 55 F5.2 mag Bmag ? B magnitude (2)
56- 60 F5.2 mag VAB ? VAB magnitude (2)
61 A1 --- l_Imag Limit flag on Imag
62- 65 F4.1 mag Imag ? I magnitude (2)
66 A1 --- n_Imag [*] * when I814 (HST) magnitude in Imag
68 A1 --- l_I-K' Limit flag on I-K'
69- 72 F4.2 mag I-K' ? I814-K' colour index
74- 78 F5.3 --- z ? Redshift
80-112 A33 --- Com Comments
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Note (1): We adopt the ``BEST'' magnitudes determined by SExtractor as the
total magnitudes in each band for the K', N204 and N212 magnitudes.
Note (2): U'AB and VAB magnitudes from Lilly et al. (1991ApJ...369...79L 1991ApJ...369...79L).
B and I magnitudes from Cowie et al. (1996AJ....112..839C 1996AJ....112..839C).
For I and B magnitudes, for objects which are not reported in Cowie et
al. (1996AJ....112..839C 1996AJ....112..839C) but appear in Lilly et al.
(1991ApJ...369...79L 1991ApJ...369...79L) with significances of more than 3σ,
B{AB} and I{AB} in Lilly et al. (1991ApJ...369...79L 1991ApJ...369...79L) are
converted to B and I by using B=B{AB}+0.17 and I=I{AB}-0.48 (e.g.,
Lilly et al., 1991ApJ...369...79L 1991ApJ...369...79L), respectively.
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History:
From electronic version of the journal
(End) James Marcout, Patricia Bauer [CDS] 28-Sep-2001