J/ApJ/901/74 ALMA obs. of UDS and GOODS-S massive galaxies (Tadaki+, 2020)
Structural evolution in massive galaxies at z∼2.
Tadaki K.-I., Belli S., Burkert A., Dekel A., Forster Schreiber N.M.,
Genzel R., Hayashi M., Herrera-Camus R., Kodama T., Kohno K., Koyama Y.,
Lee M.M., Lutz D., Mowla L., Nelson E.J., Renzini A., Suzuki T.L.,
Tacconi L.J., Ubler H., Wisnioski E., Wuyts S.
<Astrophys. J., 901, 74 (2020)>
=2020ApJ...901...74T 2020ApJ...901...74T
ADC_Keywords: Galaxies; Photometry, millimetric/submm; Redshifts;
Interstellar medium
Keywords: High-redshift galaxies ; Starburst galaxies ;
Interstellar medium ; Galaxy structure ; Galaxy bulges
Abstract:
We present 0.2 resolution Atacama Large Millimeter/submillimeter Array
(ALMA) observations at 870um in a stellar mass-selected sample of 85
massive (M*>1011M☉) star-forming galaxies (SFGs) at z=1.9-2.6
in the CANDELS/3D-Hubble Space Telescope fields of UDS and GOODS-S. We
measure the effective radius of the rest-frame far-infrared (FIR)
emission for 62 massive SFGs. They are distributed over wide ranges of
FIR size from Re,FIR=0.4kpc to Re,FIR=6kpc. The effective radius
of the FIR emission is smaller by a factor of 2.3-1.0+1.9 than the
effective radius of the optical emission and is smaller by a factor of
1.9-1.0+1.9 than the half-mass radius. Taking into account
potential extended components, the FIR size would change only by ∼10%.
By combining the spatial distributions of the FIR and optical
emission, we investigate how galaxies change the effective radius of
the optical emission and the stellar mass within a radius of 1kpc,
M1kpc. The compact starburst puts most of the massive SFGs on the
mass-size relation for quiescent galaxies (QGs) at z∼2 within 300Myr
if the current star formation activity and its spatial distribution
are maintained. We also find that within 300Myr, ∼38% of massive SFGs
can reach the central mass of M1kpc=1010.5M☉, which is
around the boundary between massive SFGs and QGs. These results
suggest an outside-in transformation scenario in which a dense core is
formed at the center of a more extended disk, likely via dissipative
in-disk inflows. Synchronized observations at ALMA 870um and James
Webb Space Telescope 3-4um will explicitly verify this scenario.
Description:
We have carried out Atacama Large Millimeter/submillimeter Array
(ALMA) observations of dust continuum emission in the mass-selected
sample of star-forming galaxies (SFGs) at z=2. We use the band 7
receivers with the 64-input correlator in Time Division Mode in a
central frequency of 345GHz (∼870um).
We performed new observations of 84 galaxies with the compact array in
2018 May-June and of 66 galaxies with the extended array in 2018
September.
For the other galaxies in our sample, we use ALMA archival data
(2012.1.00245.S, 2012.1.00983.S, 2013.1.00205.S, 2013.1.00566.S,
2013.1.00884.S, 2015.1.00242.S, 2016.1.01079.S) to avoid duplicate
observations.
File Summary:
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FileName Lrecl Records Explanations
--------------------------------------------------------------------------------
ReadMe 80 . This file
table1.dat 79 85 The source list of 85 massive star-forming
galaxies (SFGs)
table2.dat 83 19 The galaxy properties of 19 serendipitously
detected sources
table3.dat 62 74 The 870um properties for 74 massive SFGs
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See also:
J/ApJS/155/271 : Chandra Deep Field-South: Opt. spectroscopy (Szokoly+, 2004)
J/ApJ/655/51 : HDFS IRAC observations of 2<z<3.5 galaxies (Wuyts+, 2007)
J/ApJ/682/985 : FIREWORKS photometry of GOODS CDF-S (Wuyts+, 2008)
J/A+A/511/A50 : JHks of GOODS-South field (Retzlaff+, 2010)
J/A+A/532/A90 : PACS Evolutionary Probe (PEP-DR1) catalogs (Lutz+, 2011)
J/ApJ/735/86 : NEWFIRM MBS: photometric catalogs (Whitaker+, 2011)
J/MNRAS/427/1666 : Massive galaxies in CANDELS-UDS field (Bruce+, 2012)
J/ApJS/203/24 : Parameters of galaxies in CANDELS (van der Wel+, 2012)
J/A+A/549/A63 : GMASS photometry (Kurk+, 2013)
J/ApJS/214/24 : 3D-HST+CANDELS catalog (Skelton+, 2014)
J/ApJS/225/27 : 3D-HST Survey: grism spectra master cat. (Momcheva+, 2016)
J/ApJ/820/83 : ALMA galaxies in the COSMOS survey field (Scoville+, 2016)
J/MNRAS/465/1789 : SCUBA-2 Cosmology Legacy Survey (Geach+, 2017)
J/ApJ/877/103 : Half-mass radii for ∼7000 gal. at 1.0≤z≤2.5 (Suess+, 2019)
J/ApJ/886/124 : Completed KMOS3D survey NIR obs. (Wisnioski+, 2019)
J/ApJ/892/1 : Sizes of galaxies from the KMOS3D survey (Wilman+, 2020)
Byte-by-byte Description of file: table1.dat
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Bytes Format Units Label Explanations
--------------------------------------------------------------------------------
1- 9 A9 --- ID Identifier in the 3D-HST v4 catalog (G1)
11- 17 F7.4 deg RAdeg [34.2/53.3] Right ascension (J2000)
19- 26 F8.4 deg DEdeg [-28/-5.1] Declination (J2000)
28- 33 F6.4 --- z [1.9/2.6] Redshift
35 A1 --- f_z Flag on z (2)
37- 41 F5.2 [Msun] logM* [11/11.64] Log of stellar mass
43- 47 F5.2 [Msun/yr] logSFR [-0.6/3.14] Log of stellar formation rate
49- 51 F3.1 kpc Re [0.5/8]? Effective radius (3)
53- 56 F4.2 --- b/a [0.19/0.95]? Minor-to-major axis ratio,
qopt (3)
58- 61 F4.1 --- S/N [-0.1/92] Signal-to-noise ratio in the
ALMA intermediate-resolution images
63 A1 --- l_Simg Limit flag on Simg
64- 67 F4.2 mJy Simg [0.4/7] 870um flux density measured in
the ALMA low-resolution images
69- 72 F4.2 mJy e_Simg [0.1/0.3]? Simg uncertainty
74 A1 --- l_logMgas Limit flag on logMgas
75- 79 F5.2 [Msun] logMgas [10.37/11.6] Log of gas mass
--------------------------------------------------------------------------------
Note (2): Flag as follows:
p = photometric (28 occurrences)
g = grism or narrowband (29 occurrences)
s = spectroscopic (28 occurrences)
The spectroscopic or grism redshift from the 3D-HST catalog is used if
available, and otherwise the photometric redshift is used.
Note (3): Effective radius, Re,opt along the semimajor axis and the
minor-to-major axis ratio, qopt from the best-fitting Sersic profile
in the HST/F160W (van der Wel+ 2012, J/ApJS/203/24 and 2014ApJ...788...28V 2014ApJ...788...28V ;
Lang+ 2014ApJ...788...11L 2014ApJ...788...11L). See Section 2.3.
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Byte-by-byte Description of file: table2.dat
--------------------------------------------------------------------------------
Bytes Format Units Label Explanations
--------------------------------------------------------------------------------
1- 9 A9 --- ID Identifier in the 3D-HST v4 catalog (G1)
11 A1 --- f_ID Flag on ID (1)
13- 19 F7.4 deg RAdeg [34.27/53.2] Right ascension (J2000)
21- 28 F8.4 deg DEdeg [-28/-5.1] Declination (J2000)
30- 35 F6.4 --- z [0.6/4.8]? Redshift
37 A1 --- f_z Flag on z (1)
39- 43 F5.2 [Msun] logM* [10.14/11.92]? Log of stellar mass
45- 48 F4.2 [Msun/yr] logSFR [0.8/3.64]? Log of stellar formation rate
50- 53 F4.1 --- S/N [5.4/29.6] Signal-to-noise ratio
55- 58 F4.2 mJy Simg [0.39/6.78] 870um flux density measured in
the ALMA low-resolution images
60- 63 F4.2 mJy e_Simg [0.18/0.93] Simg uncertainty
65- 73 A9 --- IDp 3D-HST ID of the primary target
in ALMA observations
75- 78 F4.1 arcsec Sep [1.3/13.3] Projected separation between the
serendipitously detected source and
the primary target
80- 83 F4.2 --- Delz [0/2.77]? Redshift difference, |Δz|,
between the serendipitously detected source
and the primary target
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Note (1): Flag as follows:
e = U4-36568b is not detected in the HST image and is visible only in
the ALMA 870um image.
s = Redshift based on spectroscopic observations
(Szokoly+ 2004, J/ApJS/155/271; Popesso+ 2009A&A...494..443P 2009A&A...494..443P and
Kurk+ 2013, J/A+A/549/A63).
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Byte-by-byte Description of file: table3.dat
--------------------------------------------------------------------------------
Bytes Format Units Label Explanations
--------------------------------------------------------------------------------
1- 9 A9 --- ID Identifier in the 3D-HST v4 catalog (G1)
11- 14 F4.2 mJy Svis0.5 [0.32/6.61] the 870um visibility-based flux
density (n=0.5)
16- 19 F4.2 mJy e_Svis0.5 [0.06/0.27] Svis0.5 uncertainty
21- 23 F3.1 kpc Re0.5 [0.3/5.6]? FIR effective radius (n=0.5)
25- 27 F3.1 kpc e_Re0.5 [0/1.1]? Re0.5 uncertainty
29- 32 F4.2 --- b/a [0.2/0.99]? Minor-to-major axis ratio, qFIR
34- 37 F4.2 --- e_b/a [0.05/0.85]? b/a uncertainty
39- 41 I3 deg PA [0/180]? FIR position angle
43- 44 I2 deg e_PA [2/88]? PA uncertainty
46- 49 F4.2 mJy Svis1 [0.27/6.98]? the 870um visibility-based flux
density (n=1)
51- 54 F4.2 mJy e_Svis1 [0.08/0.37]? Svis uncertainty
56- 58 F3.1 kpc Re1 [0.3/6.4]? FIR effective radius (n=1)
60- 62 F3.1 kpc e_Re1 [0/1.4]? Re1 uncertainty
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Global notes:
Note (G1): Unique identifier in the 3D-HST v4 catalog
(Skelton+ 2014, J/ApJS/214/24 and Momcheva+ 2016, J/ApJS/225/27).
U4 and GS4 mean objects in the UDS and the GOODS-S field, respectively
(<[SWM2014] UDS NNNNN> and <[SWM2014] GOODS-S NNNNN> in Simbad).
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History:
From electronic version of the journal
(End) Emmanuelle Perret [CDS] 06-Jan-2022