J/A+A/633/A104 WINGS cluster galaxies structural parameters (Psychogyios+, 2020)
Multi-wavelength structure analysis of local cluster galaxies.
The WINGS project.
Psychogyios A., Vika M., Charmandaris V., Bamford S., Fasano G.,
Haeussler B., Moretti A., Poggianti B., Vulcani B.
<Astron. Astrophys. 633, A104 (2020)>
=2020A&A...633A.104P 2020A&A...633A.104P (SIMBAD/NED BibCode)
ADC_Keywords: Clusters, galaxy ; Galaxies, IR ; Galaxies, optical ;
Galaxy catalogs ; Photometry ; Morphology
Keywords: galaxies: clusters: general - galaxies: structure
Abstract:
We present a multi-wavelength analysis of the galaxies in nine
clusters selected from the WINGS dataset, examining how galaxy
structure varies as a function of wavelength and environment using the
state of the art software galapagos-2. We simultaneously fit
single-Sersic functions on three optical (u, B and V) and two
near-infrared (J and K) bands thus creating a wavelength-dependent
model of each galaxy. We measure the magnitudes, effective radius
(Re), the Sersic index (n), axis ratio, and position angle in each
band. The sample contains 790 cluster members (located close to the
cluster centre <0.64xR200) and 254 non-member galaxies that we
further separate based on their morphology into ellipticals,
lenticulars, and spirals. We find that the Sersic index of all
galaxies inside clusters remains nearly constant with wavelength while
Re decreases as wavelength increases for all morphological types. We
do not observe a significant variation on n and Re as a function of
projected local density and distance from the clusters centre.
Comparing the n and Re of bright cluster galaxies with a subsample of
non-member galaxies we find that bright cluster galaxies are more
concentrated (display high n values) and are more compact (low Re).
Moreover, the light profile (N) and size (R) of bright cluster
galaxies does not change as a function of wavelength in the same
manner as non-member galaxies.
Description:
We study the structural parameters of cluster galaxies, selected from
the WINGS dataset, across optical and NIR wavelengths. The structural
parameters have been calculated with the state-of -the-art software
GALAPAGOS-2 by using single-Sersic functions (from u- to K-band).
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table1.dat 39 9 List of clusters
table.dat 274 1044 Structural parameters of 1044 WINGS cluster
galaxies
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See also:
J/A+A/495/707 : WINGS spectroscopy of 48 galaxy clusters (Cava+, 2009)
J/A+A/497/667 : WINGS: Deep optical phot. of 77 nearby clusters
(Varela+, 2009)
J/MNRAS/420/926 : Morphology of galaxies in WINGS clusters (Fasano+, 2012)
J/A+A/566/A32 : Equivalent widths of WINGS galaxies (Fritz+, 2014)
J/A+A/599/A81 : OmegaWINGS local clusters of galaxies redshifts
(Moretti+, 2017)
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Byte-by-byte Description of file: table1.dat
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Bytes Format Units Label Explanations
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1- 6 A6 ---- Cluster Galaxy cluster name
8- 9 I2 h RAh Right ascension (J2000)
11- 12 I2 min RAm Right ascension (J2000)
14- 15 I2 s RAs Right ascension (J2000)
17 A1 --- DE- declination sign (J2000)
18- 19 I2 deg DEd declination (J2000)
21- 22 I2 arcmin DEm declination (J2000)
24- 29 F6.4 --- z Redshift
31- 33 I3 --- Nmemb Number of member galaxies in each galaxy
cluster (no absolute magnitude cut)
35- 36 I2 --- Nnonm Number of non-member galaxies (with z<0.15 and
MV←19.27mag) in each galaxy cluster
38- 39 I2 --- Nmembcut Number of member galaxies in each galaxy
cluster (with MV←19.27mag)
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Byte-by-byte Description of file: table.dat
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Bytes Format Units Label Explanations
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1- 19 A19 --- WINGS WINGS name (JHHMMSS.ss+DDMMSS.s) (WINGS) (1)
21- 31 F11.7 deg RAdeg Right ascension (J2000) (RA)
33- 43 F11.7 deg DEdeg Declination (J2000) (DE)
45- 56 F12.7 mag umag ?=-999 Magnitude in u-band from GALAPAGOS-2
(MAGGALFu)
58- 67 F10.7 mag Bmag ?=-999 Magnitude in B-band from GALAPAGOS-2
(MAGGALFB)
69- 78 F10.7 mag Vmag ?=-999 Magnitude in V-band from GALAPAGOS-2
(MAGGALFV)
80- 91 F12.7 mag Jmag ?=-999 Magnitude in J-band from GALAPAGOS-2
(MAGGALFJ)
93-102 F10.7 mag Kmag ?=-999 Magnitude in K-band from GALAPAGOS-2
(MAGGALFK)
104-115 F12.7 pix Reffu ?=-999 Effective radius in u-band from
GALAPAGOS-2 (REGALFu) (2)
117-127 F11.7 pix ReffB ?=-999 Effective radius in B-band from
GALAPAGOS-2 (REGALFB)
129-139 F11.7 pix ReffV ?=-999 Effective radius in V-band from
GALAPAGOS-2 (REGALFV)
141-152 F12.7 pix ReffJ ?=-999 Effective radius in J-band from
GALAPAGOS-2 (REGALFJ)
154-163 F10.7 pix ReffK ?=-999 Effective radius in K-band from
GALAPAGOS-2 (REGALFK)
165-176 F12.7 --- nu ?=-999 Sersic index in u-band from GALAPAGOS-2
(NGALFu)
178-186 F9.7 --- nB ?=-999 Sersic index in B-band from GALAPAGOS-2
(NGALFB)
188-196 F9.7 --- nV ?=-999 Sersic index in V-band from GALAPAGOS-2
(NGALFV)
198-209 F12.7 --- nJ ?=-999 Sersic index in J-band from GALAPAGOS-2
(NGALFJ)
211-219 F9.7 --- nK ?=-999 Sersic index in K-band from GALAPAGOS-2
(NGALFK)
221-229 F9.7 --- b/a Axis ratio from GALAPAGOS-2 (Q_GALF)
231-241 F11.7 deg PA [] Position angle from GALAPAGOS-2 (PA_GALF)
243-248 I6 km/s cz Radial velocity (cz) (3)
250 I1 --- m [0/1] Membership flag (m) (4)
252-255 F4.1 --- MType Morphological type (MType) (5)
257-261 F5.3 [Mpc-2] logN10 (Decimal) Log of the number of 10 nearest
neighbours (N10) of galaxies per Mpc2
(ld) (6)
263-267 F5.3 --- ccdb Distance from the BCG, in R200/pix unit
(ccdb) (7)
269-274 F6.4 --- Cm The inverse of the magnitude completeness
factor (Cm) (8)
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Note (1): WINGS identifier from Varela et al. (2009, Cat. J/A+A/497/667).
Note (2): The Reff of each galaxy has been converted to physical units (kpc)
using the radial velocity (cz) from Cava et al. (2009, J/A+A/495/707)
for each galaxy.
Note (3): Radial velocity from Cava et al. (2009, J/A+A/495/707).
Note (4): Membership flag from Cava et al. (2009, J/A+A/495/707) and
Moretti et al. (2017, J/A+A/599/A81) as follows:
0 = NOT member
1 = member
Note (5): Morphological classification based on MORPHOT; Fasano et al.
(2012, J/MNRAS/420/926).
Note (6): Projected local density for each galaxy are based on the findings of
Fasano et al. (2015MNRAS.449.3927F 2015MNRAS.449.3927F).
Note (7): Distance from the BCG from Moretti et al. (2014A&A...564A.138M 2014A&A...564A.138M)
Note (8): See Appendix B of Fritz et al. (2014, J/A+A/566/A32)
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Acknowledgements:
Alexandros Psychogyios, alpsych(at)physics.uoc.gr
(End) Patricia Vannier [CDS] 20-Nov-2019