J/A+A/592/A122 Starburst galaxies in the COSMOS field (Hinojosa-Goni+, 2016)
Starburst galaxies in the COSMOS field:
clumpy star-formation at redshift 0 < z < 0.5.
Hinojosa-Goni R., Munoz-Tunon C., Mendez-Abreu J.
<Astron. Astrophys. 592, A122 (2016)>
=2016A&A...592A.122H 2016A&A...592A.122H (SIMBAD/NED BibCode)
ADC_Keywords: Galaxies, peculiar ; Galaxies, photometry ; Equivalent widths ;
Morphology
Keywords: galaxies: starburst - galaxies: star formation - galaxies: bulges -
Galaxies: evolution - galaxies: formation - galaxies: structure
Abstract:
At high redshift, starburst galaxies present irregular morphologies,
with 10-20% of their star formation occurring in giant clumps. These
clumpy galaxies are considered to be the progenitors of local disk
galaxies. To understand the properties of starbursts at intermediate
and low redshift, it is fundamental to track their evolution and
possible link with the systems at higher z.
We present an extensive, systematic, and multi-band search and
analysis of the starburst galaxies at redshift (0<z<0.5) in the COSMOS
field, as well as detailed characteristics of their star-forming
clumps by using Hubble Space Telescope/Advance Camera for Surveys
(HST/ACS) images.
The starburst galaxies are identified using a tailor-made
intermediate-band color excess selection, tracing the simultaneous
presence of Hα and [OIII] emission lines in the galaxies. Our
methodology uses previous information from the zCOSMOS spectral
database to calibrate the color excess as a function of the equivalent
width of both spectral lines. This technique allows us to identify
220 starburst galaxies at redshift 0<z<0.5 using the SUBARU
intermediate-band filters. Combining the high spatial resolution
images from the HST/ACS with ground-based multi-wavelength photometry
we identify and parametrize the star-forming clumps in every galaxy.
Their principal properties, sizes, masses, and star formation rates
are provided.
Description:
In table3 derived parameters for 220 starburst galaxies in the COSMOS
field are presented. For each galaxy the object name (ordered by RA),
RA, DEC, Redshift, F814W magnitude, F814W absolute magnitude, Luminous
radius (kpc), U-B, B-V, V-K, V-i, Hα luminosity, [OIII]
luminosity, Hα equivalent width, [OIII] equivalent width,
surface brightness, Ellipticity, Mass and a goodness parameters of the
K correction are given.
In table 4 derived parameters for the star-forming regions are
presented. For each star-forming regions the name of the host galaxy
(ordered by RA), Knot classification, Diffuse luminosity, knot number,
Hα luminosity, Mass, Distance to the center, knot radius, and
knot ellipticity are given.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table3.dat 164 220 Derived parameters for 220 starburst galaxies
table4.dat 53 306 Main parameters for star-forming regions
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See also:
II/284 : COSMOS Multi-Wavelength Photometry Catalog (Capak+, 2007)
J/ApJS/172/70 : zCOSMOS-bright catalog (Lilly+, 2007)
Byte-by-byte Description of file: table3.dat
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Bytes Format Units Label Explanations
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1- 7 A7 --- --- [COSMOS-]
8- 10 I3 --- Object [1/306] Galaxy identification name
12- 18 F7.3 deg RAdeg Right ascension (J2000)
20- 24 F5.3 deg DEdeg Declination (J2000)
26- 30 F5.3 --- zph Photometric redshift
32- 36 F5.2 mag F814Wmag F814W magnitude
38- 43 F6.2 mag F814WMAG F814W absolute magnitude
45- 49 F5.3 kpc Rlum Luminous radius
51- 56 F6.2 mag U-B ?=-99. U-B colour index (1)
58- 61 F4.2 mag e_U-B ?=9. rms uncertainty on U-B
63- 68 F6.2 mag B-V ?=-99. B-V colour index (1)
70- 73 F4.2 mag e_B-V ?=9. rms uncertainty on B-V
75- 80 F6.2 mag V-K ?=-99. V-K colour index (1)
82- 86 F5.2 mag e_V-K ?=9. rms uncertainty on V-K
88- 93 F6.2 mag V-i ?=-99. V-i colour index (1)
95- 99 F5.2 mag e_V-i ?=99. rms uncertainty on U-B
101-106 F6.2 [10-7W] logLHa ?=-99. Hα luminosity (1)
108-111 F4.2 [10-7W] e_logLHa ?=9. rms uncertainty on logLHa
113-118 F6.2 [10-7W] logL[OIII] ?=-99. [OIII] luminosity (1)
120-124 F5.2 [10-7W] e_logL[OIII] ?=9. rms uncertainty on logL[OIII]
125-129 I5 0.1nm EWHa Equivalent width of Hα
131-134 I4 0.1nm EW[OIII] Equivalent width of [OIII]
136-145 F10.2 10mW/m2/nm SB Surface Brigthness
147-150 F4.2 --- Ell Ellipticity
152-159 F8.2 10+7Msun Mass Mass
161-164 F4.2 --- G G factor (goodness parameter of
the K correction)
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Note (1): For parameters where it was not possible to do an estimation,
we give the value -99.0.
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Byte-by-byte Description of file: table4.dat
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Bytes Format Units Label Explanations
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1- 7 A7 --- --- [COSMOS-]
8- 10 I3 --- Object [1/306] Galaxy identification name
12- 14 F3.1 --- Class knots classification
16- 24 F9.2 10+30W DL Diffuse Luminosity (in 1037erg/s)
26 I1 --- Knot [1/4] Knots number
28- 31 F4.1 [10-7W] logLHa ?=99. Hα luminosity (1)
33- 38 F6.1 10+8Msun Mass Mass
40- 44 I5 pc Dist Distance to center
46- 49 I4 pc Rad Knot radius
51- 53 F3.1 --- Ell Knot ellipticity
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Note (1): For parameters where it was not possible to do an estimation,
we give the value 99.0.
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Acknowledgements:
Rodrigo Hinojosa-Goni, hinojosa(at)iac.es
References:
Kopylova & Kopylov, 1998PAZh...24..573K 1998PAZh...24..573K, (1998AstL...24..491K 1998AstL...24..491K)
Structure and dynamic state of the Corona Borealis supercluster
(End) Rodrigo Hinojosa-Goni [IAC, Spain], Patricia Vannier [CDS] 04-May-2016