J/A+A/703/A184 GCs of dwarf galaxies in Perseus cluster (Saifollahi+, 2025)
Euclid: Early Release Observations. Interplay between dwarf galaxies and their
globular clusters in the Perseus galaxy cluster.
Saifollahi T., Lancon A., Cantiello M., Cuillandre J.-C., Bethermin M.,
Carollo D., Duc P.-A., Ferre-Mateu A., Hatch N.A., Hilker M., Hunt L.K.,
Marleau F.R., Roman J., Sanchez-Janssen R., Tortora C., Urbano M.,
Voggel K., Bolzonella M., Bouy H., Kluge M., Schirmer M., Stone C.,
Giocoli C., Knapen J.H., Le M.N., Mondelin M., Poulain M., Aghanim N.,
Altieri B., Andreon S., Auricchio N., Baccigalupi C., Bagot D., Baldi M.,
Balestra A., Bardelli S., Basset A., Battaglia P., Biviano A., Bonchi A.,
Bonino D., Bon W., Branchini E., Brescia M., Brinchmann J., Camera S.,
Capobianco V., Carbone C., Carretero J., Casas S., Castellano M.,
Castignani G., Cavuoti S., Chambers K.C., Cimatti A., Colodro-Conde C.,
Congedo G., Conselice C.J., Conversi L., Copin Y., Courbin F.,
Courtois H.M., Cropper M., Da Silva A., Degaudenzi H., De Lucia G.,
Dole H., Douspis M., Dubath F., Duncan C.A.J., Dupac X., Dusini S.,
Escoffier S., Farina M., Farinelli R., Faustini F., Ferriol S.,
Fotopoulou S., Frailis M., Franceschi E., Fumana M., Galeotta S., George K.,
Gillis B., Gracia-Carpio J., Grazian A., Grupp F., Haugan S.V.H., Hoar J.,
Hoekstra H., Holmes W., Hook I.M., Hormuth F., Hornstrup A., Jahnke K.,
Jhabvala M., Keihaenen E., Kermiche S., Kiessling A., Kubik B., Kuemmel M.,
Kunz M., Kurki-Suonio H., Lahav O., Laureijs R., Le Brun A.M.C.,
Le Mignant D., Ligori S., Lilje P.B., Lindholm V., Lloro I., Maino D.,
Maiorano E., Mansutti O., Marggraf O., Martinelli M., Martinet N.,
Marulli F., Massey R., Maurogordato S., Medinaceli E., Mei S., Mellier Y.,
Meneghetti M., Merlin E., Meylan G., Mora A., Moresco M., Moscardini L.,
Nakajima R., Neissner C., Niemi S.-M., Padilla C., Paltani S., Pasian F.,
Pedersen K., Percival W.J., Pettorino V., Pires S., Polenta G., Poncet M.,
Popa L.A., Pozzetti L., Raison F., Rebolo R., Renzi A., Rhodes J.,
Riccio G., Romelli E., Roncarelli M., Saglia R., Sakr Z., Sanchez A.G.,
Sapone D., Sartoris B., Schewtschenko J.A., Schneider P., Schrabback T.,
Seidel G., Seiffert M., Serrano S., Sirignano C., Sirri G., Stanco L.,
Steinwagner J., Tallada-Crespi P., Taylor A.N., Tereno I., Toft S.,
Toledo-Moreo R., Torradeflot F., Tsyganov A., Tutusaus I., Valentijn E.A.,
Valenziano L., Valiviita J., Vassallo T., Verdoes Kleijn G., Veropalumbo A.,
Wang Y., Weller J., Zamorani G., Zerbi F.M., Zucca E., Burigana C.,
Martin-Fleitas J., Scottez V.
<Astron. Astrophys. 703, A184 (2025)>
=2025A&A...703A.184S 2025A&A...703A.184S (SIMBAD/NED BibCode)
ADC_Keywords: Clusters, galaxy ; Galaxies, dwarf ; Clusters, globular ; Infrared
Keywords: methods: observational - techniques: photometric - galaxies: dwarf -
galaxies: clusters: individual: Perseus -
galaxies: star clusters: general
Abstract:
We present an analysis of globular clusters (GCs) of dwarf galaxies in
the Perseus galaxy cluster to explore the relationship between dwarf
galaxy properties and their GCs, which offer important clues on the
origin and subsequent evolution of dwarf galaxies. Our focus is on GC
numbers (NGC) and GC half-number radii (RGC) around dwarf
galaxies, and their relations with host galaxy stellar masses (M*),
central surface brightnesses (µ0), and effective radii (Re).
Interestingly, we find that at a given stellar mass, RGC is almost
independent of the host galaxy µ0 and Re, while GC/Re depends on
µ0 and Re; lower surface brightness and diffuse dwarf galaxies
show GC/Re∼1 while higher surface brightness and compact dwarf
galaxies show RGC/Re∼1.5-2. This means that for dwarf galaxies of
similar stellar mass, the GCs have a similar median extent; however,
their distribution is different from the field stars of their host.
Additionally, low surface brightness and diffuse dwarf galaxies on
average have a higher NGC than high surface brightness and compact
dwarf galaxies at any given stellar mass. We also find that UDGs
(ultra-diffuse galaxies) and non-UDGs in the sample have similar
RGC, while UDGs have smaller RGC/Re (typically less than 1) and
3-4 times higher NGC than non-UDGs. Furthermore, examining nucleated
versus not-nucleated dwarf galaxies, we find that for M*>108M☉
nucleated dwarf galaxies seem to have smaller RGC and RGC/Re with
no significant differences seen between their NGC, except at
M*<108M☉ where the nucleated dwarf galaxies tend to have a
higher NGC. Lastly, we explore the stellar-to-halo mass ratio (SHMR)
of dwarf galaxies (halo mass based on NGC) and conclude that the
Perseus cluster dwarf galaxies follow the expected SHMR at z=0
extrapolated down to M*=106M☉
Description:
The table with the GC properties of dwarf galaxies in the Euclid Early
Release Observations (ERO) of the Perseus galaxy cluster. Column 1
present the Euclid ID (name) of the dwarf galaxies from Marleau+2025.
Column 2 and 3 present the stellar mass and effective radius of dwarf
galaxies from Cuillandre+2025 and Marleau+2025. Columns 4 and 5
present the GC numbers and its associated uncertainty. Columns 6, 7
and 8 presents the estimated GC half number radius for dwarf galaxies
and its associated uncertainties.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
tablea2.dat 188 1083 Properties of dwarf galaxies in the Euclid Early
Release Observations (ERO) of
the Perseus galaxy cluster
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See also:
J/A+A/692/A96 : NGC 6397 Euclid/Gaia internal kinematics (Libralato+, 2024)
J/A+A/696/A80 : LDN 1495 free-floating planetary mass objects (Bouy+, 2025)
J/A+A/697/A8 : NGC 6254 (M10) and NGC 6397 Euclid photometry (Massari+, 2025)
J/A+A/697/A11 : Euclid Early Release Observations. Perseus (Cuillandre+, 2025)
J/A+A/697/A12 : Euclid ERO Perseus cluster dwarfs (Marleau+, 2025)
J/A+A/697/A16 : Euclid ERO LBG and ERS candidate lists (Weaver+, 2025)
J/A+A/700/A33 : VVV NIRGC III (Alonso+, 2025)
Byte-by-byte Description of file: tablea2.dat
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Bytes Format Units Label Explanations
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1- 9 A9 --- Euclid Euclid Id, EDwC-NNNN, from Marleau et al.,
(2025A&A...697A..12M 2025A&A...697A..12M, Cat. J/A+A/697/A12)
11- 28 F18.15 deg RAdeg Right ascension (J2000)
30- 47 F18.15 deg DEdeg Declination (J2000)
49- 68 F20.16 [Msun] logMstar Stellar mass (1)
70- 73 F4.2 kpc Re Effective radius
75- 97 F23.18 --- NGC ?=-99 Number of globular clusters
100-123 E24.20 --- e_NGC ?=-99 Number of globular clusters uncertainty
125-144 F20.16 --- RGC ?=-99 Estimated globular clusters half-number
radius
146-166 F21.17 --- E_RGC ?=-99 Estimated globular clusters half-number
radius uncertainty (upper value)
168-188 F21.17 --- e_RGC ?=-99 Estimated globular clusters half number
radius uncertainty (upper value)
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Note (1): From Cuillandre et al. (2025A&A...700A..33A 2025A&A...700A..33A, Cat. J/A+A/700/A33)
and Marleau et al. (2025A&A...697A..12M 2025A&A...697A..12M, Cat. J/A+A/697/A12).
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Acknowledgements:
Teymoor Saifollahi, Teymoor.saifollahi(at)astro.unistra.fr
(End) Patricia Vannier [CDS] 29-Aug-2025