J/AJ/164/222 SDSS and WISE photometry of 115 starburst galaxies (Whalen+, 2022)
The Space Density of Intermediate-redshift, Extremely Compact, Massive Starburst
Galaxies.
Whalen K.E., Hickox R.C., Coil A.L., Diamond-Stanic A.M., Geach J.E.,
Moustakas J., Rudnick G.H., Rupke D.S.N., Sell P.H., Tremonti C.A.,
Davis J.D.,Perrotta S.,Petter G.C.
<Astron. J., 164, 222 (2022)>
=2022AJ....164..222W 2022AJ....164..222W
ADC_Keywords: Galaxies; Photometry, SDSS; Photometry, ugriz;
Photometry, infrared; Redshifts
Keywords: Compact galaxies ; Starburst galaxies ; Post-starburst galaxies
; Galaxy evolution
Abstract:
We present a measurement of the intrinsic space density of
intermediate redshift (z∼0.5), massive (M*∼1011M☉), compact
(Re∼100pc) starburst (ΣSFR∼1000M☉/yr/kpc) galaxies with
tidal features indicative of them having undergone recent major
mergers. A subset of them host kiloparsec-scale, >1000km/s outflows
and have little indication of AGN activity, suggesting that extreme
star formation can be a primary driver of large-scale feedback. The
aim for this paper is to calculate their space density so we can place
them in a better cosmological context. We do this by empirically
modeling the stellar populations of massive, compact starburst
galaxies. We determine the average timescale on which galaxies that
have recently undergone an extreme nuclear starburst would be targeted
and included in our spectroscopically selected sample. We find that
massive, compact starburst galaxies targeted by our criteria would be
selectable for ∼148-24+27Myr and have an intrinsic space density
nCS∼1.1-0.3+0.5x10-6/Mpc3. This space density is broadly
consistent with our z∼0.5 compact starbursts being the most extremely
compact and star-forming low-redshift analogs of the compact
star-forming galaxies in the early universe, as well as them being the
progenitors to a fraction of intermediate redshift, post-starburst,
and compact quiescent galaxies.
Description:
In this work, we have studied a population of 115 z∼0.5 massive
galaxies that are experiencing extreme, compact starburst events and
outflows. The parent sample of galaxies we use in this work is drawn
from the Sloan Digital Sky Survey (SDSS) DR8.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
tablea1.dat 68 115 Properties for the galaxies in our sample
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See also:
II/267 : The SDSS Photometric Catalog, Release 4 (Adelman-McCarthy+, 2006)
J/ApJ/588/218 : i*g* photometry of SDSS EDR galaxies (Abraham+, 2003)
J/ApJ/720/723 : Compact galaxies in the local universe (Taylor+, 2010)
J/A+A/528/A35 : Infrared luminosity in GOODS fields (Magnelli+, 2011)
J/ApJ/768/74 : PHIBSS; CO observations star-forming galaxies (Tacconi+, 2013)
J/ApJ/833/19 : 0.02<z<1.4 poststarburst SDSSgalaxies (Pattarakijwanich+, 2016)
J/ApJ/849/53 : Composite SEDs of type 1 and type 2 QSOs (Hickox+, 2017)
J/ApJ/862/2 : Post-starburst galaxy ages from SDSS (French+, 2018)
Byte-by-byte Description of file: tablea1.dat
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Bytes Format Units Label Explanations
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1- 10 A10 --- SDSS SDSS identifier
12- 16 F5.3 --- z [0.4/0.79] Redshift
18- 21 F4.1 [Msun] Mass [10.3/11.8] log Stellar mass (1)
23- 26 F4.2 [Msun] e_Mass [0.06/0.7] Error on Mass
28- 32 F5.2 mag umag [19/26.6] SDSS u-band AB magnitude
34- 38 F5.2 mag gmag [15.8/21.3] SDSS g-band AB magnitude
40- 44 F5.2 mag rmag [14.6/20.2] SDSS r-band AB magnitude
46- 50 F5.2 mag imag [16.6/19.5] SDSS i-band AB magnitude
52- 56 F5.2 mag zmag [16.5/20.7] SDSS z-band AB magnitude
58- 62 F5.2 mag W1mag [14.1/16.2] WISE W1-band Vega magnitude
64- 68 F5.2 mag W2mag [13.4/16.1] WISE W2-band Vega magnitude
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Note (1): Average Mass and error were computed in the MCMC fitting
routine described in the article.
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History:
From electronic version of the journal
(End) Prepared by Coralie Fix [CDS], 24-Jan-2023