J/A+A/514/A11 SEDs in ADFS (AKARI Deep Field South) (Malek+, 2010)
Star forming galaxies in the AKARI Deep Field South: identifications and SEDs.
Malek K., Pollo A., Takeuchi T.T., Bienias P., Shirahata M., Matsuura S.,
Kawada M.
<Astron. Astrophys. 514, A11 (2010)>
=2010A&A...514A..11M 2010A&A...514A..11M
ADC_Keywords: Surveys ; Galaxy catalogs ; Galaxies, IR ; Photometry, infrared ;
Combined data ; Cross identifications
Keywords: surveys - galaxies: fundamental parameters - galaxies: evolution -
infrared: galaxies
Abstract:
We investigate the nature and properties of far-infrared (FIR) sources
in the AKARI Deep Field South (ADF-S).
We performed an extensive search for the counterparts to 1000 ADF-S
objects brighter than 0.0301Jy in the WIDE-S (90um) AKARI band in the
public databases (NED and SIMBAD). We analyzed the properties of the
resulting sample: statistics of the identified objects, quality of
position determination of the ADF-S sources, their number counts,
redshift distribution, and comparison of morphological types, when the
corresponding information was available. We performed a simplified
analysis of the clustering properties of the ADF-S sources and
compiled spectral energy distributions (SEDs) of objects with the
highest quality photometry, using three different models.
Among 1000 investigated ADF-S sources, 545 were identified with
sources at other wavelengths in public databases. From them, 518 are
known galaxies and 343 of these were previously known as infra-red
sources. Among the remaining sources, there are two quasars and both
infrared and radio sources of unknown origin. Among six stellar
identifications, at least five are probably the effect of
contamination. We measured the redshifts of 48 extragalactic objects
and determined the morphological types of 77 galaxies. We present SED
models of 47 sources with sufficiently good photometric data.
Conclusions: We conclude that the bright FIR point sources observed in
the ADF-S are mostly nearby galaxies. Their properties are very
similar to the properties of the local population of optically bright
galaxies, except for unusually high ratio of peculiar or interacting
objects and a lower percentage of elliptical galaxies. The percentage
of lenticular galaxies is the same as in the optically bright
population, which suggests that galaxies of this type may frequently
contain a significant amount of cool dust. It is possible that source
confusion plays a significant role in more than 34% of measurements.
The SEDs correspond to a variety of galaxy types, from very actively
star forming to very quiescent. The AKARI long wavelength bands data
have enabled us to determine for the first time that these galaxies
are objects with very cool dust.
Description:
Identifications and photometric flux densities in all available
wavelengths for 545 (among 1000) ADF-S sources brighter than 30.1mJy
in the AKARI WIDE-S (90um) band are presented. All 545 sources for
which a counterpart in the 40" radius on the sky has been found in
the public databases are listed. The serial ADF-S number, ADF-S
coordinates and fluxes in four far-infrared (FIR) AKARI bands (65,
90, 140 and 160um), as well as a name, coordinates and available
photometric data for the nearest identified counterpart are given
for each source.
File Summary:
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FileName Lrecl Records Explanations
--------------------------------------------------------------------------------
ReadMe 80 . This file
sample.dat 94 545 List of the 545 nearest counterparts of the
ADF-S sources from the 6σ catalog
(S90um>0.0301Jy) (tableA1)
akari.dat 76 545 Flux densities of 545 ADF-S sources with
identified counterparts, measured by AKARI at
65, 90, 140 and 160um (tableA2)
phot1.dat 99 518 Phototometric data for the ADF-S sources with
identified counterparts, collected from the
public databases (0.44, 0.47, 0.55, 0.64, 0.71um)
(tables A3, A7 and first part of table A8)
phot2.dat 177 297 Phototometric data for the ADF-S sources with
identified counterparts, collected from the
public databases (0.79, 1.25, 1.65, 2.22, 12, 25,
60 and 100um, and 35.69cm)
(tables A4 & A5 and last part of table A8)
phot3.dat 42 26 Phototometric data for the ADF-S sources with
identified counterparts, collected from public
databases for other wavelengths (tableA6 )
refs.dat 93 30 References
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See also:
II/297 : AKARI/IRC mid-IR all-sky Survey (ISAS/JAXA, 2010)
II/298 : AKARI/FIS All-Sky Survey Point Source Catalogues (ISAS/JAXA, 2010)
Byte-by-byte Description of file: sample.dat
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Bytes Format Units Label Explanations
--------------------------------------------------------------------------------
1 I1 --- Sample [1/2] Sample (1)
3- 6 I4 --- ADFS ADF-S identification number
8- 37 A30 --- Name Name of the nearest counterpart (2)
39- 46 F8.5 deg RAdeg ADF-S source right ascension (J2000.0)
in decimal degrees
48- 56 F9.5 deg DEdeg ADF-S source declination (J2000.0)
in decimal degrees
58- 65 F8.5 deg RAcdeg Counterpart right ascension (J2000.0)
in decimal degrees
67- 75 F9.5 deg DEcdeg Counterpart declination (J2000.0)
in decimal degrees
77- 82 F6.3 arcsec Dist Angular distance between the ADF-S source and
its counterpart
84- 91 F8.6 --- z ? Redshift of the counterpart, when available
93- 94 A2 --- r_z References for redshifts, in refs.dat file
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Note (1): Sample number is:
1 = nearest counterparts of the ADF-S sources from the 10σ
catalog (S90um>0.0482Jy), No. 1 to 499
2 = nearest counterparts of the ADF-S sources from the fainter part of
the 6σ catalog (0.0482Jy>S90um>0.0301Jy), No. 503 to 1000
Note (2): In case of different naming conventions, we use the primary name
given by NED, when available and otherwise the primary name given by
SIMBAD.
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Byte-by-byte Description of file: akari.dat
--------------------------------------------------------------------------------
Bytes Format Units Label Explanations
--------------------------------------------------------------------------------
1- 4 I4 --- ADFS ADF-S identification number
6- 13 E8.3 Jy N60 ?=- Flux density at 65um AKARI band
15- 22 E8.3 Jy e_N60 ? rms uncertainty on N60
24- 31 E8.3 Jy WIDE-S ?=- Flux density at 90um AKARI band
33- 40 E8.3 Jy e_WIDE-S ? rms uncertainty on WIDE-S
42- 49 E8.3 Jy WIDE-L ?=- Flux density at 140um AKARI band
51- 58 E8.3 Jy e_WIDE-L ? rms uncertainty on WIDE-L
60- 67 E8.3 Jy N160 ?=- Flux density at 160um AKARI band
69- 76 E8.3 Jy e_N160 ? rms uncertainty on N160
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Byte-by-byte Description of file: phot1.dat
--------------------------------------------------------------------------------
Bytes Format Units Label Explanations
--------------------------------------------------------------------------------
1- 4 I4 --- ADFS ADF-S identification number
6- 13 E8.3 Jy S0.44 ?=- Flux density at 0.44um band
15- 22 E8.3 Jy e_S0.44 ? rms uncertainty on S0.44
23 A1 --- r_S0.44 [ABDE] Reference for S0.44, in refs.dat file
25- 32 E8.3 Jy S0.47 ?=- Flux density at 0.47um band
34- 41 E8.3 Jy e_S0.47 ? rms uncertainty on S0.47
42 A1 --- r_S0.47 [C] Reference for S0.47, in refs.dat file
44- 51 E8.3 Jy S0.55 ?=- Flux density at 0.55um band
53- 60 E8.3 Jy e_S0.55 ? rms uncertainty on S0.55
61 A1 --- r_S0.55 [BD] Reference for S0.55, in refs.dat file
63- 70 E8.3 Jy S0.64 ?=- Flux density at 0.64um band
72- 79 E8.3 Jy e_S0.64 ? rms uncertainty on S0.64
80 A1 --- r_S0.64 [ADE] Reference for S0.64, in refs.dat file
82- 89 E8.3 Jy S0.71 ?=- Flux density at 0.71um band
91- 98 E8.3 Jy e_S0.71 ? rms uncertainty on S0.71
99 A1 --- r_S0.71 [DF] Reference for S0.71, in refs.dat file
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Byte-by-byte Description of file: phot2.dat
--------------------------------------------------------------------------------
Bytes Format Units Label Explanations
--------------------------------------------------------------------------------
1- 4 I4 --- ADFS ADF-S identification number
6- 13 E8.3 Jy S0.79 ?=- Flux density at 0.79um band
15- 22 E8.3 Jy e_S0.79 ? rms uncertainty on S0.79
23 A1 --- r_S0.79 [GJ] Reference for S0.79, in refs.dat file
25- 32 E8.3 Jy S1.25 ?=- Flux density at 1.25um band
34- 41 E8.3 Jy e_S1.25 ? rms uncertainty on S1.25
42 A1 --- r_S1.25 [DH] Reference for S1.25, in refs.dat file
44- 51 E8.3 Jy S1.65 ?=- Flux density at 1.65um band
53- 60 E8.3 Jy e_S1.65 ? rms uncertainty on S1.65
61 A1 --- r_S1.65 [DH] Reference for S1.65, in refs.dat file
63- 70 E8.3 Jy S2.22 ?=- Flux density at 2.22um band
72- 79 E8.3 Jy e_S2.22 ? rms uncertainty on S2.22
80 A1 --- r_S2.22 [DH] Reference for S2.22, in refs.dat file
82 A1 --- l_S12 Limit flag on S12
83- 90 E8.3 Jy S12 ?=- Flux density at 12um band
92- 99 E8.3 Jy e_S12 ? rms uncertainty on S12
100 A1 --- r_S12 [I] Reference for S12, in refs.dat file
102-109 E8.3 Jy S25 ?=- Flux density at 25um band
111-118 E8.3 Jy e_S25 ? rms uncertainty on S25
119 A1 --- r_S25 [I] Reference for S25, in refs.dat file
121-128 E8.3 Jy S60 ?=- Flux density at 60um band
130-137 E8.3 Jy e_S60 ? rms uncertainty on S60
138 A1 --- r_S60 [I] Reference for S60um, in refs.dat file
140 A1 --- l_S100 Limit flag on S12.0
141-148 E8.3 Jy S100 ?=- Flux density at 100um band
150-157 E8.3 Jy e_S100 ? rms uncertainty on S100
158 A1 --- r_S100 [I] Reference for S100um, in refs.dat file
160-167 E8.3 Jy S35.69 ?=- Flux density at 35.69cm (843MHz) band
169-176 E8.3 Jy e_S35.69 ? rms uncertainty on S35.69
177 A1 --- r_S35.69 [K] Reference for S35.69, in refs.dat file
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Byte-by-byte Description of file: phot3.dat
--------------------------------------------------------------------------------
Bytes Format Units Label Explanations
--------------------------------------------------------------------------------
1- 4 I4 --- ADFS ADF-S identification number
6- 11 F6.2 um lambda Wavelength
13- 20 E8.3 Jy S Measured flux density at lambda
22- 29 E8.3 Jy e_S ? rms uncertainty on S
32- 40 A9 --- Band Instrument or filter name
42 A1 --- r_Band [BJLMNOP] Reference, in refs.dat file
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Byte-by-byte Description of file: refs.dat
--------------------------------------------------------------------------------
Bytes Format Units Label Explanations
--------------------------------------------------------------------------------
1- 2 A2 --- Ref Reference code
4- 22 A19 --- BibCode BibCode
24- 58 A35 --- Aut Author's name
60- 93 A34 --- Com Comments
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Acknowledgements:
Katarzyna Malek, malek(at)cft.edu.pl
Agnieszka Pollo, apollo(at)camk.edu.pl
Tsutomu T. Takeuchi, takeuchi(at)iar.nagoya-u.ac.jp
This work is based on observations with AKARI, a JAXA project with the
participation of ESA. This research has made use of the NASA/IPAC
Extragalactic Database (NED) which is operated by the Jet Propulsion
Laboratory, California Institute of Technology, under contract with
the National Aeronautics and Space Administration, and the SIMBAD
database, operated at CDS, Strasbourg, France. We thank Misato
Fukagawa for sending the information about Vega-like star candidates.
This work has been supported in part by the Polish Astroparticle
Physics Network. AP was financed by the research grant of the Polish
Ministry of Science PBZ/MNiSW/07/2006/34A. TTT has been supported by
Program for Improvement of Research Environment for Young Researchers
from Special Coordination Funds for Promoting Science and Technology,
and the Grant-in-Aid for the Scientific Research Fund (20740105)
commissioned by the Ministry of Education, Culture, Sports, Science
and Technology (MEXT) of Japan. TTT has been partially supported from
the Grand-in-Aid for the Global COE Program "Quest for Fundamental
Principles in the Universe: from Particles to the Solar System and the
Cosmos" from the MEXT.
(End) Katarzyna Malek (CFT PAN, Poland), Patricia Vannier [CDS] 23-Dec-2009