J/A+A/683/A205 MAGIC group and galaxy catalogs (Epinat+, 2024)
MAGIC: MUSE gAlaxy Groups In COSMOS. A survey to probe the impact of environment
on galaxy evolution over the last 8 Gyr.
Epinat B., Contini T., Mercier W., Ciesla L., Lemaux B.C., Johnson S.D.,
Richard J., Brinchmann J., Boogaard L.A., Carton D., Michel-Dansac L.,
Bacon R., Krajnovic D., Finley H., Schroetter I., Ventou E.,
Abril-Melgarejo V., Boselli A., Bouche N.F., Kollatschny W., Kovac K.,
Paalvast M., Soucail G., Urrutia T., Weilbacher P.M.
<Astron. Astrophys. 683, A205 (2024)>
=2024A&A...683A.205E 2024A&A...683A.205E (SIMBAD/NED BibCode)
ADC_Keywords: Clusters, galaxy ; Galaxy catalogs ; Redshifts
Keywords: catalogs - galaxies: clusters: general -
galaxies: distances and redshifts - galaxies: evolution -
galaxies: groups: general - galaxies: high-redshift
Abstract:
Galaxies migrate along cosmic web filaments from small groups to
clusters, which makes the evolution of their properties look stronger
as environments get denser. We introduce the MUSE gAlaxy Groups in
COSMOS (MAGIC) survey built to study the impact of environment on
galaxy evolution down to low stellar masses over the last eight Gyr.
The MAGIC survey consists of 17 Multi-Unit Spectrocopic Exporer (MUSE)
fields targeting 14 massive, known structures at intermediate redshift
(0.3<z<0.8) in the COSMOS area, with a total on-source exposure of
67h. We securely measure redshifts for 1419 sources and identify 76
galaxy pairs and 67 groups of at least three members using a
friends-of- friends algorithm. The environment of galaxies is
quantified from group properties, as well as from global and local
density estimators, inferred from galaxy number density and dynamics
within groups. The MAGIC survey has increased the number of objects
with a secure spectroscopic redshift over its footprint by a factor of
∼5 compared to the previous extensive spectroscopic campaigns on the
COSMOS field. Most of the new redshifts have apparent magnitudes in
the z++ band z++_app>21.5. The spectroscopic redshift completeness is
high: in the redshift range of [OII] emitters (0.25<z<1.5), where most
of the groups are found, it globally reaches a maximum of 80% down to
z++app=25.9, and it locally decreases from ∼100% to ∼50% in magnitude
bins from z++app=23-24 to z++app=25.5. We find that the fraction of
quiescent galaxies increases with local density and with the time
spent in groups. A morphological dichotomy is also found between
bulge-dominated quiescent and disk-dominated star-forming galaxies. As
environment gets denser, the peak of the stellar mass distribution
shifts towards M*>1010M☉, the fraction of galaxies with
M*<109M☉ decreasing significantly, even for star-forming
galaxies. We also highlight peculiar features such as close groups,
extended nebulae, and a gravitational arc. Our results suggest that
galaxies are pre- processed in groups of increasing mass before
entering rich groups and clusters. We publicly release two catalogs
containing the properties of galaxies and groups, respectively.
Description:
The MAGIC group catalog has 143 entries, including 76 pairs and 67
groups. It summarizes the main properties of groups. The MAGIC galaxy
catalog contains 2471 entries, corresponding to all objects having a
tentative redshift within MUSE data, but also to objects in the
COSMOS2015 photometric parent sample (Laigle et al.,
2016ApJS..224...24L 2016ApJS..224...24L, Cat. J/ApJS/224/24) with no redshift inferred
from MUSE data.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
group.dat 111 143 MAGIC group catalog (table A1)
galaxy.dat 207 2471 *MAGIC galaxy catalog (table A2)
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Note on galaxy.dat: Stars are included in the catalog, but their physical and
environment properties are not computed. Such properties are not provided
either for the 788 galaxies without MUSE redshift determination.
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See also:
J/ApJ/753/121 : zCOSMOS 20k sample group catalog to z≲1.2 (Knobel+, 2012)
J/ApJS/224/24 : The COSMOS2015 catalog (Laigle+, 2016)
J/MNRAS/483/3545 : X-ray centres of COSMOS galaxy groups (Gozaliasl+, 2019)
J/A+A/677/A143 : Angular momentum in MAGIC. I. Environment (Mercier+, 2023)
Byte-by-byte Description of file: group.dat
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Bytes Format Units Label Explanations
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1- 3 I3 --- MGR [1/143] MAGIC group ID
5- 16 F12.6 deg RAdeg Right ascension (J2000) of the unweighted
barycenter of the group
18- 29 F12.6 deg DEdeg Declination (J2000) of the unweighted
barycenter of the group
31- 33 I3 --- Rich Number of members within the group
35- 45 F11.5 --- z Mean redshift of the group
47- 53 F7.1 km/s sigma ?=-9999 Velocity dispersion of galaxies in the
group, using the Gapper method (1)
55- 61 F7.1 [Msun] logMvir ?=-9999 Group virial mass (1)
63- 69 F7.1 kpc R200 ?=-9999 Group R200 radius (1)
71- 75 I5 --- CGR ?=-9999 Group ID in the zCOSMOS 20k group
catalog when matched (2)
77- 81 I5 --- CW ?=-9999 Group ID in the COSMOS Wall group
catalog when matched (3)
83- 87 I5 --- Xray ?=-9999 Group ID in the X-ray group catalog
when matched (4)
89- 95 F7.1 arcsec Xraysep ?=-9999 Angular separation between MAGIC and
X-ray centers (5)
97-103 F7.1 [Msun] logXM200 ?=-9999 Mass at radius R200 inferred from
X-rays (5)
105-111 F7.1 kpc XR200 ?=-9999 R200 radius inferred from X-rays (5)
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Note (1): Velocity dispersion, R200 and virial mass are only provided for groups
of more than five members.
Note (2): Knobel et al. 2012ApJ...753..121K 2012ApJ...753..121K, Cat. J/ApJ/753/121,
[KLI2012] NNNN in Simbad.
Note (3): Iovino et al. 2016A&A...592A..78I 2016A&A...592A..78I, [IPS2016] WNN in Simbad.
Note (4): Gozaliasl et al. (2019MNRAS.483.3545G 2019MNRAS.483.3545G, Cat. J/MNRAS/483/3545),
[GFT2019] Group NNNNN in Simbad.
Note (5): from Gozaliasl et al. 2019MNRAS.483.3545G 2019MNRAS.483.3545G, Cat. J/MNRAS/483/3545.
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Byte-by-byte Description of file: galaxy.dat
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Bytes Format Units Label Explanations
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1- 10 A10 --- ID MAGIC object ID, of the form X_CGrY, where
X is the identifier within the fields
corresponding to COSMOS group CGrY
12- 17 I6 --- C2015 ?=-9999 Object ID in the COSMOS2015
catalog (1)
19- 26 A8 --- Field Name of the MAGIC field
28- 39 F12.6 deg RAdeg Right ascension (J2000) (2)
41- 52 F12.6 deg DEdeg Declination (J2000) (2)
54- 64 F11.5 --- z Systemic redshift of the source (2)
66 I1 --- Confid [0/3] Redshift confidence level
from 1 (low) to 3 (high)
68- 77 F10.4 [Msun] logM* ?=-9999 Logarithm of stellar mass within a
3 arcsec aperture estimated from SED
fitting with CIGALE
79- 88 F10.4 [Msun] e_logM* ?=-9999 Uncertainty on the logarithm of
stellar mass within 3 arcsec apertures
90- 99 F10.4 [Msun/yr] logSFR ?=-9999 Logarithm of SFR within a 3 arcsec
aperture estimated from SED fitting
with CIGALE
101-110 F10.4 [Msun/yr] e_logSFR ?=-9999 Uncertainty on the logarithm of SFR
within 3 arcsec apertures
112-121 F10.4 mag E(B-V) ?=-9999 Color excess estimated from SED
fitting with CIGALE
123-132 F10.4 mag NUV-RP ?=-9999 NUV-r+ rest-frame color estimated
from SED fitting with CIGALE
134-143 F10.4 mag RP-J ?=-9999 r±J rest-frame color estimated
from SED fitting with CIGALE
145-149 I5 --- MGR ?=-9999 MAGIC group ID to which the galaxy
belongs, as defined in the group catalog
151-159 F9.3 [Mpc-2] logVMCD Galaxy density at the location of the
galaxy inferred from the VMC method
161-169 F9.3 [-] logVMCOD Galaxy over-density at the location of the
galaxy inferred from the VMC method
171-179 F9.3 [Mpc-2] logVORD ?=-9999 Galaxy density at the location of
the galaxy inferred from Voronoi
tessellations
181-188 F8.2 kpc DR ?=-9999 Distance to group center
190-196 F7.1 km/s DV ?=-9999 Velocity in the frame of the group
with respect to the group redshift
198-207 F10.4 --- ETA ?=-9999 Phase space parameter
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Note (1): from Laigle et al.. 2016ApJS..224...24L 2016ApJS..224...24L, J/ApJS/224/24.
Note (2): adjusted with the morphology analysis (Mercier et al.
2023A&A...677A.143M 2023A&A...677A.143M, Cat. J/A+A/677/A143), when available.
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Acknowledgements:
Benoit Epinat, benoit.epinat(at)lam.fr
(End) Patricia Vannier [CDS] 06-Dec-2023