J/ApJS/268/10 The value-added COSMOS2020 catalog (Rusakov+, 2023)
A value-added COSMOS2020 catalog of physical properties: constraining
temperature-dependent Initial Mass Function.
Rusakov V., Steinhardt C.L., Sneppen A.
<Astrophys. J. Suppl. Ser., 268, 10 (2023)>
=2023ApJS..268...10R 2023ApJS..268...10R (SIMBAD/NED BibCode)
ADC_Keywords: Galaxies, photometry; Redshifts; Extinction; Stars, masses;
Optical
Keywords: Catalogs; Initial mass function; Galaxy evolution; Galaxy properties
Galaxy masses; High-redshift galaxies; Stellar mass functions
Abstract:
This work presents and releases a catalog of new photometrically
derived physical properties for the ∼105 most well-measured galaxies
in the COSMOS field on the sky. Using a recently developed technique,
spectral energy distributions are modeled assuming a stellar initial
mass function (IMF) that depends on the temperature of gas in
star-forming regions. The method is applied to the largest current
sample of high-quality panchromatic photometry, the COSMOS2020
catalog, that allows for testing this assumption. It is found that the
galaxies exhibit a continuum of IMF and gas temperatures, most of
which are bottom-lighter than measured in the Milky Way. As a
consequence, the stellar masses and star formation rates of most
galaxies here are found to be lower than those measured by traditional
techniques in the COSMOS2020 catalog by factors of ∼1.6-3.5 and
2.5-70.0, respectively, with the change being the strongest for the
most active galaxies. The resulting physical properties provide new
insights into variation of the IMF-derived gas temperature along the
star-forming main sequence and at quiescence, produce a sharp and
coherent picture of downsizing, as seen from the stellar mass
functions, and hint at a possible high-temperature and high-density
stage of early galactic evolution.
Description:
There are two primary versions of the COSMOS2020 catalog
(Weaver+ 2022, J/ApJS/258/11), CLASSIC and FARMER. This work makes use
of the CLASSIC version, which is preferred for the brightest galaxies.
To obtain the most accurate and well-measured objects in the
COSMOS2020 catalog were made. See Section 2.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
catalog.dat 864 498988 Value-added COSMOS2020 catalog of physical properties
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See also:
II/284 : COSMOS Multi-Wavelength Photometry Catalog (Capak+, 2007)
J/ApJ/690/1236 : COSMOS photometric redshift catalog (Ilbert+, 2009)
J/ApJS/206/8 : COSMOS/UltraVISTA Ks-selected catalogs v4.1 (Muzzin+, 2013)
J/A+A/556/A55 : Multi-color phot. of star-forming galaxies (Ilbert+, 2013)
J/ApJ/814/95 : Star formation rate of 4≲z≲8 galaxies (Finkelstein+, 2015)
J/ApJS/224/24 : The COSMOS2015 catalog (Laigle+, 2016)
J/A+A/607/A126 : GalIMF version 1.0.0 (Yan+, 2017)
J/A+A/609/A30 : Monochromatic conversion factors to Mdust (Schreiber+, 2018)
J/A+A/620/A39 : Galaxy-wide IMF grids (Jerabkova+, 2018)
J/MNRAS/489/4389 : JINGLE V Dust properties of nearby gal. (Lamperti+, 2019)
J/ApJS/258/11 : The COSMOS2020 catalog (Weaver+, 2022)
Byte-by-byte Description of file: catalog.dat
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Bytes Format Units Label Explanations
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1- 7 I7 --- ID [189427/1490819] COSMOS2020 Classic
catalog identifier
(<COSMOS2020 Classic NNNNNNN> in Simbad)
9- 18 F10.6 deg RAdeg [149.3/150.7] Right ascension (J2000)
20- 27 F8.6 deg DEdeg [1.5/3] Declination (J2000)
29- 34 F6.3 --- zphot [0.01/12] EAZY maximum likelihood
photo-z
36- 42 F7.3 --- Chi2-zph [2.5/250] Chi-squared at zphot
44- 49 F6.4 --- Risk-zph [0/0.94] Risk parameter (Tanaka+
2018PASJ...70S...9T 2018PASJ...70S...9T) at z-phot
51- 55 F5.2 --- zmin [0.02/11.7] zphot where risk parameter
Risk-zph is minimised
57- 62 F6.4 --- Risk-zmin [0/0.8] Risk at zmin
64- 69 F6.3 --- zraw [0.01/12] Photo-z where Chi2-zph is
minimised, without priors
71- 75 F5.1 --- Chi2-zraw [2.5/250] Chi2 at zraw
77- 81 F5.3 --- z025 [0.01/9.6] Percentile of photo-z
83- 88 F6.3 --- z160 [0.01/11] Percentile of photo-z
90- 95 F6.3 --- z500 [0.01/11.6] Percentile of photo-z
97-102 F6.3 --- z840 [0.01/12] Percentile of photo-z
104-109 F6.3 --- z975 [0.02/12] Percentile of photo-z
111-112 I2 --- Nf [22/25] Number of filters used for
photo-z
114-120 F7.2 0.1nm lc-min [3640.98/3641] Minimum effective
wavelength of valid filters
122-129 F8.2 0.1nm lc-max [21503.4/45020.4] Maximum effective
wavelength of valid filters
131-139 E9.3 uJy restU [0/98.3] Rest-frame U-band flux density
141-149 E9.3 uJy e_restU [0/1.3] Uncertainty in restU
151-159 E9.3 uJy restB [0.0008/200] Rest-frame B-band flux
density
161-169 E9.3 uJy e_restB [0.0002/3] Uncertainty in restB
171-179 E9.3 uJy restV [0/303] Rest-frame V-band flux density
181-189 E9.3 uJy e_restV [0/6.5] Uncertainty in restV
191-199 E9.3 uJy restJ [0/628] Rest-frame J-band flux density
201-209 E9.3 uJy e_restJ [0/19] Uncertainty in restJ
211-215 F5.3 [Mpc] dL [1.7/5.1] Log luminosity distance at
z-phot
217-222 F6.3 [Msun] Mass [2.4/12.2] Log stellar mass
224-230 F7.3 [Msun/yr] SFR [-26.5/2.8] Log star formation rate
232-238 F7.3 [yr-1] sSFR [-30/-7.8] Log specific star formation
rate
240-245 F6.3 [Lsun] LV [3.9/12.5] Log V-band luminosity
247-252 F6.3 [Lsun] LIR [1.7/13.6] Log total 8-1000um luminosity
254-259 F6.3 [Lsun] LU [3.3/12.3] Log luminosity in rest-frame
U band
261-266 F6.3 [Lsun] LJ [3.5/12.5] Log luminosity in rest-frame
J band
268-273 F6.3 [Lsun] L1400 [0.27/12.4] Log luminosity in 200A-wide
tophat filter at 1400Å at rest-frame
275-280 F6.3 [Lsun] L2800 [2.4/12.2] Log luminosity in 200A-wide
tophat filter at 2800Å at rest-frame
282-288 F7.3 [Lsun] LHa [-20.5/10.6] Log Halpha line luminosity
at z-phot
290-296 F7.3 [Lsun] LOIII [-21.6/10.4] Log OIII line luminosity
at z-phot
298-304 F7.3 [Lsun] LHb [-21/10] Log Hbeta line luminosity at
z-phot
306-312 F7.3 [Lsun] LOII [-21.3/9.8] Log OII line luminosity at
z-phot
314-319 F6.4 Msun/Lsun MLv [0.02/7.2] Mass-to-light ratio in V
band
321-325 F5.3 mag AV [0.005/3] Extinction in V band
327-332 F6.4 Gyr lwAgeV [0.009/7.2] Light-weighted age in V
band
334-339 F6.3 [Msun] Mass-p025 [2.3/12.2] Percentile of log stellar
mass
341-346 F6.3 [Msun] Mass-p160 [2.3/12.2] Percentile of log stellar
mass
348-353 F6.3 [Msun] Mass-p500 [2.4/12.2] Percentile of log stellar
mass
355-360 F6.3 [Msun] Mass-p840 [2.5/12.3] Percentile of log stellar
mass
362-367 F6.3 [Msun] Mass-p975 [2.5/12.4] Percentile of log stellar
mass
369-375 F7.3 [Msun/yr] SFR-p025 [-26.6/2.7] Percentile of log star
formation rate
377-383 F7.3 [Msun/yr] SFR-p160 [-26.5/2.7] Percentile of log star
formation rate
385-391 F7.3 [Msun/yr] SFR-p500 [-26.5/2.8] Percentile of log star
formation rate
393-399 F7.3 [Msun/yr] SFR-p840 [-26.5/2.8] Percentile of log star
formation rate
401-407 F7.3 [Msun/yr] SFR-p975 [-26.5/2.9] Percentile of log star
formation rate
409-414 F6.3 [Lsun] LV-p025 [3.7/12.4] Percentile of log luminosity
in V band
416-421 F6.3 [Lsun] LV-p160 [3.8/12.4] Percentile of log luminosity
in V band
423-428 F6.3 [Lsun] LV-p500 [3.9/12.5] Percentile of log luminosity
in V band
430-435 F6.3 [Lsun] LV-p840 [3.9/12.5] Percentile of log luminosity
in V band
437-442 F6.3 [Lsun] LV-p975 [4/12.6] Percentile of log luminosity
in V band
444-449 F6.3 [Lsun] LIR-p025 [1.6/13.5] Percentile of log luminosity
in 8-1000um
451-456 F6.3 [Lsun] LIR-p160 [1.7/13.6] Percentile of log luminosity
in 8-1000um
458-463 F6.3 [Lsun] LIR-p500 [1.7/13.6] Percentile of log luminosity
in 8-1000um
465-470 F6.3 [Lsun] LIR-p840 [1.7/13.7] Percentile of log luminosity
in 8-1000um
472-477 F6.3 [Lsun] LIR-p975 [1.8/13.8] Percentile of log luminosity
in 8-1000um
479-484 F6.3 [Lsun] LU-p025 [3.1/12.3] Percentile of log luminosity
in rest-frame U band
486-491 F6.3 [Lsun] LU-p160 [3.1/12.3] Percentile of log luminosity
in rest-frame U band
493-498 F6.3 [Lsun] LU-p500 [3.3/12.3] Percentile of log luminosity
in rest-frame U band
500-505 F6.3 [Lsun] LU-p840 [3.3/12.3] Percentile of log luminosity
in rest-frame U band
507-512 F6.3 [Lsun] LU-p975 [3.3/12.4] Percentile of log luminosity
in rest-frame U band
514-519 F6.3 [Lsun] LJ-p025 [3.3/12.4] Percentile of log luminosity
in rest-frame J band
521-526 F6.3 [Lsun] LJ-p160 [3.4/12.5] Percentile of log luminosity
in rest-frame J band
528-533 F6.3 [Lsun] LJ-p500 [3.5/12.5] Percentile of log luminosity
in rest-frame J band
535-540 F6.3 [Lsun] LJ-p840 [3.5/12.6] Percentile of log luminosity
in rest-frame J band
542-547 F6.3 [Lsun] LJ-p975 [3.6/12.7] Percentile of log luminosity
in rest-frame J band
549-554 F6.3 [Lsun] L1400-p025 [0.07/12.4] Percentile of log
luminosity in 200A-wide top-hat filter
at 1400A at rest-frame
556-561 F6.3 [Lsun] L1400-p160 [0.15/12.4] Percentile of log
luminosity in 200A-wide top-hat filter
at 1400A at rest-frame
563-568 F6.3 [Lsun] L1400-p500 [0.29/12.4] Percentile of log
luminosity in 200A-wide top-hat filter
at 1400A at rest-frame
570-575 F6.3 [Lsun] L1400-p840 [0.4/12.4] Percentile of log luminosity
in 200A-wide top-hat filter at 1400A at
rest-frame
577-582 F6.3 [Lsun] L1400-p975 [0.5/12.5] Percentile of log luminosity
in 200A-wide top-hat filter at 1400A at
rest-frame
584-589 F6.3 [Lsun] L2800-p025 [2.3/12.2] Percentile of log luminosity
in 200A-wide top-hat filter at 2800A at
rest-frame
591-596 F6.3 [Lsun] L2800-p160 [2.4/12.2] Percentile of log luminosity
in 200A-wide top-hat filter at 2800A at
rest-frame
598-603 F6.3 [Lsun] L2800-p500 [2.49/12.2] Percentile of log
luminosity in 200A-wide top-hat filter
at 2800A at rest-frame
605-610 F6.3 [Lsun] L2800-p840 [2.5/12.2] Percentile of log luminosity
in 200A-wide top-hat filter at 2800A at
rest-frame
612-617 F6.3 [Lsun] L2800-p975 [2.5/12.3] Percentile of log luminosity
in 200A-wide top-hat filter at 2800A at
rest-frame
619-625 F7.3 [Lsun] LHa-p025 [-20.7/10.5] Percentile of log Halpha
line luminosity at z-phot
627-633 F7.3 [Lsun] LHa-p160 [-20.6/10.5] Percentile of log Halpha
line luminosity at z-phot
635-641 F7.3 [Lsun] LHa-p500 [-20.5/10.6] Percentile of log Halpha
line luminosity at z-phot
643-649 F7.3 [Lsun] LHa-p840 [-20.5/10.7] Percentile of log Halpha
line luminosity at z-phot
651-657 F7.3 [Lsun] LHa-p975 [-20.5/10.7] Percentile of log Halpha
line luminosity at z-phot
659-665 F7.3 [Lsun] LOIII-p025 [-22/10.3] Percentile of log OIII line
luminosity at z-phot
667-673 F7.3 [Lsun] LOIII-p160 [-21.7/10.3] Percentile of log OIII
line luminosity at z-phot
675-681 F7.3 [Lsun] LOIII-p500 [-21.6/10.4] Percentile of log OIII
line luminosity at z-phot
683-689 F7.3 [Lsun] LOIII-p840 [-21.5/10.4] Percentile of log OIII
line luminosity at z-phot
691-697 F7.3 [Lsun] LOIII-p975 [-21.5/10.5] Percentile of log OIII
line luminosity at z-phot
699-705 F7.3 [Lsun] LHb-p025 [-21.5/10] Percentile of log Hbeta line
luminosity at z-phot
707-713 F7.3 [Lsun] LHb-p160 [-21.2/10] Percentile of log Hbeta line
luminosity at z-phot
715-721 F7.3 [Lsun] LHb-p500 [-21/10] Percentile of log Hbeta line
luminosity at z-phot
723-729 F7.3 [Lsun] LHb-p840 [-21/10.1] Percentile of log Hbeta line
luminosity at z-phot
731-737 F7.3 [Lsun] LHb-p975 [-21/10.2] Percentile of log Hbeta line
luminosity at z-phot
739-745 F7.3 [Lsun] LOII-p025 [-22/9.7] Percentile of log OII line
luminosity at z-phot
747-753 F7.3 [Lsun] LOII-p160 [-21.6/9.7] Percentile of log OII line
luminosity at z-phot
755-761 F7.3 [Lsun] LOII-p500 [-21.3/9.8] Percentile of log OII line
luminosity at z-phot
763-769 F7.3 [Lsun] LOII-p840 [-21.2/10] Percentile of log OII line
luminosity at z-phot
771-777 F7.3 [Lsun] LOII-p975 [-21.2/10] Percentile of log OII line
luminosity at z-phot
779-785 F7.3 [yr-1] sSFR-p025 [-30/-7.8] Percentile of log specific
star formation rate
787-793 F7.3 [yr-1] sSFR-p160 [-30/-7.8] Percentile of log specific
star formation rate
795-801 F7.3 [yr-1] sSFR-p500 [-30/-7.8] Percentile of log specific
star formation rate
803-809 F7.3 [yr-1] ssfr-p840 [-30/-7.8] Percentile of log specific
star formation rate
811-817 F7.3 [yr-1] sSFR-p975 [-30/-7.8] Percentile of log specific
star formation rate
819-823 F5.3 mag AV-p025 [0.005/3] Percentile of extinction in V
band
825-829 F5.3 mag AV-p160 [0.005/3] Percentile of extinction in V
band
831-835 F5.3 mag AV-p500 [0.005/3] Percentile of extinction in V
band
837-841 F5.3 mag AV-p840 [0.005/3] Percentile of extinction in V
band
843-847 F5.3 mag AV-p975 [0.005/3] Percentile of extinction in V
band
849-852 F4.1 K tIMF [13/59] Maximum-likelihood temperature
of parametrized Kroupa IMF Jermyn+ 2018
854-857 F4.1 K e_tIMF [0/39]? Lower sigma uncertainty in
best-fit temperature of Kroupa IMF
859-862 F4.1 K E_tIMF [0/36]? Upper sigma uncertainty in
best-fit temperature of Kroupa IMF
864 I1 --- Out [0/1] Bad local solutions that appear
as a grid of t-imf and ssfr
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History:
From electronic version of the journal
(End) Prepared by [AAS], Emmanuelle Perret [CDS] 20-Nov-2023