J/ApJ/634/L1 16µm sources in the NOAO Bootes field (Kasliwal+, 2005)
Identifying silicate-absorbed ULIRGs at z∼1-2 in the Bootes field using the
Spitzer IRS.
Kasliwal M.M., Charmandaris V., Weedman D., Houck J.R., Le Floc'h E.,
Higdon S.J.U., Armus L., Teplitz H.I.
<Astrophys. J., 634, L1-L4 (2005)>
=2005ApJ...634L...1K 2005ApJ...634L...1K
ADC_Keywords: Infrared sources ; Galaxies, IR ; Photometry, infrared
Keywords: dust, extinction - galaxies: active -
galaxies: distances and redshifts - galaxies: high-redshift -
galaxies: starburst - infrared: galaxies
Abstract:
Using the 16µm peak-up imager on the Infrared Spectrograph (IRS) on
Spitzer, we present a serendipitous survey of 0.0392°2 within
the area of the NOAO Deep Wide-Field Survey in Bootes. Combining our
results with the available Multiband Imaging Photometer for Spitzer
(MIPS) 24µm survey of this area, we produce a catalog of 150
16µm sources brighter than 0.18mJy (3σ) for which we derive
measures or limits on the 16µm/24µm colors. Such colors are
especially useful in determining redshifts for sources whose
mid-infrared spectra contain strong emission or absorption features
that characterize these colors as a function of redshift.
Description:
We observed 57 positions in the Bootes field during two different
periods using the IRS on Spitzer. The total field of view of a blue
peak-up image in both nod positions is 50pix x 55pix. Since the pixel
size of the IRS Short-Low module is 1.8"x1.8", the field of view is
2.475arcmin2. The total area observed is 0.0392°2, which is
230 times smaller than the total area of the Bootes survey imaged at
24µm with MIPS. The observations were obtained between 2004 August
27 and September 2, as well as between 2004 November 11 and 17, with
exposure times of ∼240s, resulting in a median 1σ depth of
∼0.06mJy at 16µm.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table1.dat 73 150 Catalog of the 16µm sources in the
Bootes NOAO Wide Deep Field
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See also:
J/ApJ/634/128 : 16µm imaging around the HDF-N (Teplitz+, 2005)
Byte-by-byte Description of file: table1.dat
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Bytes Format Units Label Explanations
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1- 3 I3 --- [KCW2005] Running identification number
([KCW2005] NNN in Simbad)
5- 9 A5 --- --- [SST16]
11- 29 A19 --- SST16 Spitzer designation (in Simbad:
([KCW2005] SST16 JHHMMSS.ss+DDMMSS.s) (1)
31- 35 F5.3 mJy S16um The 16µm flux density
37- 41 F5.3 mJy e_S16um The 1σ error in S16um
43- 47 F5.3 mJy S24um ? The 24µm flux density
49 A1 --- l_F16/24 Limit flag on Ratio
50- 55 F6.2 --- F16/24 The 16µm/24µm flux density ratio (2)
57- 61 F5.2 mag BWmag ? The BW (NWDFS k1025) band magnitude (3)
63- 67 F5.2 mag Rmag ? The Harris R band magnitude (3)
69- 73 F5.2 mag Imag ? The nearly-Mould I band magnitude (3)
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Note (1): SST16 source name derives from discovery with the IRS PU 16µm
images; coordinates listed are in J2000; 16µm positions with
typical 3σ uncertainty of ±1.2"; sources with an optical
counterpart will also appear in NDWFS catalogs with prefix NDWFS
and the optical source position; sources with a MIPS 24µm
counterpart will also appear in MIPS catalog.
Note (2): Upper limits for 24µm sources are assumed to be 0.18mJy.
Note (3): Optical magnitudes are Mag-Auto from NDWFS DR3, available at
http://www.noao.edu/noao/noaodeep/; the NOAO filters characteristics
are available at http://www.noao.edu/kpno/mosaic/filters/
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History:
From electronic version of the journal
(End) Greg Schwarz [AAS], Marianne Brouty [CDS] 14-Sep-2006