J/ApJ/923/278 Massive star cluster in LIRGs in GOALS. II. (Linden+, 2021)
Massive star cluster formation and destruction in luminous infrared galaxies in
GOALS.
II. An ACS/WFC3 survey of nearby LIRGs.
Linden S.T., Evans A.S., Larson K., Privon G.C., Armus L., Rich J.,
Diaz-Santos T., Murphy E.J., Song Y., Barcos-Munoz L., Howell J.,
Charmandaris V., Inami H., U. V, Surace J.A., Mazzarella J.M.,
Calzetti D.
<Astrophys. J., 923, 278 (2021)>
=2021ApJ...923..278L 2021ApJ...923..278L
ADC_Keywords: Galaxies, IR; Clusters, open; Photometry, HST; Photometry, UBV;
Extinction
Keywords: Young star clusters ; Starburst galaxies ; Infrared galaxies ;
Interstellar medium ; Star formation
Abstract:
We present the results of a Hubble Space Telescope WFC3 near-UV and
Advanced Camera for Surveys Wide Field Channel optical study into the
star cluster populations of a sample of 10 luminous infrared galaxies
(LIRGs) in the Great Observatories All-Sky LIRG Survey. Through
integrated broadband photometry we have derived ages, masses, and
extinctions for a total of 1027 star clusters in galaxies with
dL<110Mpc in order to avoid issues related to cluster bending. The
measured cluster age distribution slope of
dN/dτ∝τ-0.5±0.12 is steeper than what has been
observed in lower-luminosity star-forming galaxies. Further,
differences in the slope of the observed cluster age distribution
between inner- (dN/dτ∝τ-1.07±0.12) and outer-disk
(dN/dτ∝τ-0.37±0.09) star clusters provide evidence
of mass-dependent cluster destruction in the central regions of LIRGs
driven primarily by the combined effect of strong tidal shocks and
encounters with massive giant molecular clouds. Excluding the nuclear
ring surrounding the Seyfert 1 nucleus in NGC 7469, the derived
cluster mass function (CMF; dN/dM∝Mα) offers marginal
evidence for a truncation in the power law at Mt∼2x106M☉
for our three most cluster-rich sources, which are all classified as
early stage mergers. Finally, we find evidence of a flattening of the
CMF slope of dN/dM∝M-1.42±0.1 for clusters in late-stage
mergers relative to early stage (α=-1.65±0.02), which we
attribute to an increase in the formation of massive clusters over the
course of the interaction.
Description:
The HST WFC3 U- (F336W) images of 10 luminous infrared galaxy (LIRG)
systems were obtained from 2018 August-November (PI: A. Evans;
PID 15472).
The resulting mosaics were combined with our existing ACS/WFC F435W
and F814W observations (see Figure 1). The final pixel scale of our
WFC3 images is 0.0396"/pix. The ACS/WFC and WFC3/UVIS cameras have
comparable fields of view (202"x202" and 162"x162", respectively), and
cover sufficient area to enable single-pointing observations of these
U/LIRGs. See Section 2.
File Summary:
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FileName Lrecl Records Explanations
--------------------------------------------------------------------------------
ReadMe 80 . This file
table1.dat 89 10 Galaxy sample properties
table2.dat 109 1110 Derived properties of individual star clusters
table3.dat 131 1110 Observational properties of individual star clusters
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See also:
VII/237 : HYPERLEDA. I. Catalog of galaxies (Paturel+, 2003)
J/A+AS/139/393 : Young Massive Star Clusters. II. (Larsen, 1999)
J/AJ/121/3048 : Multicolor photometry in NGC 1512 and NGC 5248 (Maoz+, 2001)
J/ApJ/661/830 : Giant molecular clouds of M33 (Rosolowsky+, 2007)
J/ApJ/723/993 : Spatial extent of (U)LIRGs in MIR. I. (Diaz-Santos+, 2010)
J/ApJ/715/572 : GOALS UV and FIR properties (Howell+, 2010)
J/AJ/140/75 : Antennae galaxies revisited (Whitmore+, 2010)
J/AJ/143/16 : HST photometry of IC 883 star clusters (Modica+, 2012)
J/MNRAS/426/2601 : CO lines in luminous IR galaxies (Papadopoulos+, 2012)
J/ApJ/768/102 : I-band GALFIT analysis of luminous IR galaxies (Kim+, 2013)
J/MNRAS/462/3766 : List of galaxies with star forming regions (Cook+, 2016)
J/ApJ/841/92 : Young massive star clusters in 2 LEGUS gal. (Ryon+, 2017)
J/ApJ/843/91 : Massive star cluster in LIRGs in GOALS. (Linden+, 2017)
J/MNRAS/482/2530 : Young massive clusters in Arp 299 (Randriamanakoto+, 2019)
J/ApJ/882/5 : 5 luminous & ultraluminous IR gal. with ALMA (Wilson+, 2019)
J/ApJ/888/92 : Star-forming clumps in luminous IR galaxies (Larson+, 2020)
Byte-by-byte Description of file: table1.dat
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Bytes Format Units Label Explanations
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1- 15 A15 --- Gal Galaxy name
17 A1 --- n_Gal Flag on Gal (1)
19- 20 I2 h RAh Hour of right ascension (J2000) (2)
22- 23 I2 min RAm Minute of right ascension (J2000)
25- 30 F6.3 s RAs Second of right ascension (J2000)
32 A1 --- DE- Sign of declination (J2000) (2)
33- 34 I2 deg DEd Degree of declination (J2000) (2)
36- 37 I2 arcmin DEm Arcminute of declination (J2000)
39- 43 F5.2 arcsec DEs Arcsecond of declination (J2000)
45- 50 F6.2 Mpc Dist [45.6/329.4] Distance, DL
52 I1 --- MS [2/6] Merger stage (0-3: early; 4-6: late) (3)
54- 58 F5.2 [Lsun] logLIR [11.6/12.5] log of infrared luminosity (2)
60- 64 F5.2 [Msun] logMs ? log of stellar mass (2)
66- 71 F6.2 Msun/yr SFR Star formation rate (2)
72 A1 --- f_SFR Flag on SFR (1)
74- 77 F4.2 kpc Size MIR size (4)
78 A1 --- f_Size [*] *=central region is unresolved in
the Spitzer 2D IRS spectra
80- 83 F4.2 --- b/a [0.3/0.92] b to a ratio (5)
85- 89 F5.1 deg PA [9.3/302.7] Position angle (5)
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Note (1): Flag as follows:
a = Data for Mrk 231 is taken from Sanders et al. (2012ApJS..203....9U 2012ApJS..203....9U).
b = An estimate for the SFR of IRAS 14378-3651 is taken from
Sturm et al. (2011ApJ...733L..16S 2011ApJ...733L..16S).
Note (2): R.A., decl., distance, infrared luminosity, stellar mass, and
star formation rate (SFR) are taken from Howell+ (2010, J/ApJ/715/572).
Note (3): MSs are taken from Haan+ (2013MNRAS.434.1264H 2013MNRAS.434.1264H);
Kim+ (2013, J/ApJ/768/102), and Stierwalt+ (2013, J/ApJS/206/1).
Note (4): MIR sizes are taken from Diaz-Santos+ (2010, J/ApJ/723/993).
Note (5): The b/a and PA are taken from Kim+ (2013, J/ApJ/768/102).
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Byte-by-byte Description of file: table2.dat
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Bytes Format Units Label Explanations
--------------------------------------------------------------------------------
1- 15 A15 --- Gal Star cluster host galaxy name
16 A1 --- --- [-]
17- 45 A29 --- m_Gal "Extended galaxy" or "Center"
47- 49 I3 --- ID [1/549] Cluster identifier within
the host galaxy
51- 63 F13.9 deg RAdeg [16.9/346] Right Ascension (J2000)
65- 77 F13.9 deg DEdeg [-44/57] Declination (J2000)
79- 82 F4.2 [yr] logt [6.01/9.98] log age
84- 88 F5.2 [yr] e_logt [0.01/1.3] Uncertainty in logt
90- 93 F4.2 [Msun] logM [2.75/9.91] log mass
95- 99 F5.2 [Msun] e_logM [0/1] Uncertainty in logM
101-104 F4.2 mag Av [0/5] V band extinction
106-109 F4.2 mag e_Av [0/7.2] Uncertainty in Av
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Byte-by-byte Description of file: table3.dat
--------------------------------------------------------------------------------
Bytes Format Units Label Explanations
--------------------------------------------------------------------------------
1- 15 A15 --- Gal Star cluster host galaxy name
16 A1 --- --- [-]
17- 45 A29 --- m_Gal "Extended galaxy" or "Center"
47- 49 I3 --- ID [1/549] Cluster identifier within the host
galaxy
51- 63 F13.9 deg RAdeg [16.9/346] Right Ascension (J2000)
65- 77 F13.9 deg DEdeg [-44/57] Declination (J2000)
79- 86 E8.2 cW/m2/nm F336W [1e-19/1.3e-15] HST/WFC3 U-band (F336W) flux
(1)
88- 95 E8.2 cW/m2/nm e_F336W [2.4e-20/5.3e-18] Uncertainty in F336W (1)
97-104 E8.2 cW/m2/nm F435W [7.2e-20/9.5e-16] HST/ACS/WFC B-band (F435W)
flux (1)
106-113 E8.2 cW/m2/nm e_F435W [9.8e-21/6.2e-18] Uncertainty in F435W (1)
115-122 E8.2 cW/m2/nm F814W [2.4e-20/4.9e-16] HST/ACS/WFC I-band (F814W)
flux (1)
124-131 E8.2 cW/m2/nm e_F814W [4.2e-21/3.6e-18] Uncertainty in F814W (1)
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Note (1): In erg/s/cm2/Angstrom.
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History:
From electronic version of the journal
References:
Linden et al. Paper I. 2017ApJ...843...91L 2017ApJ...843...91L Cat. J/ApJ/843/91
(End) Prepared by [AAS], Emmanuelle Perret [CDS] 07-Jun-2023