J/MNRAS/501/2430 Galaxy activity in ZwCl0024+1652 cluster (Beyoro-Amado+, 2021)
GLACE survey: Galaxy activity in ZwCl0024+1652 cluster from strong optical
emission lines.
Beyoro-Amado Z., Sanchez-Portal M., Bongiovanni A., Povic M., Tessema S.B.,
Perez-Martinez R., Perez Garcia A.M., Cervino M., Nadolny J., Cepa J.,
Gonzalez-Serrano J.I., Pintos-Castro I.
<Mon. Not. R. Astron. Soc., 501, 2430-2450 (2021)>
=2021MNRAS.501.2430B 2021MNRAS.501.2430B (SIMBAD/NED BibCode)
ADC_Keywords: Clusters, galaxy ; Active gal. nuclei ; Galaxies ; Redshifts ;
Morphology ; Optical
Keywords: methods: observational - galaxies: active -
galaxies: clusters: general - galaxies: star formation
Abstract:
Although ZwCl0024+1652 galaxy cluster at z∼0.4 has been thoroughly
analysed, it lacks a comprehensive study of star formation and nuclear
activity of its members. With GaLAxy Cluster Evolution (GLACE) survey,
a total of 174 Hα emission-line galaxies (ELGs) were detected,
most of them having [NII]. We reduced and analysed a set of [OIII] and
Hβ tunable filter (TF) observations within GLACE survey. Using
Hα priors, we identified [OIII] and Hβ in 35 (∼20 per cent)
and 59 (∼34 per cent) sources, respectively, with 21 of them having
both emission lines, and 20 having in addition [NII]. Applying BPT-NII
diagnostic diagram, we classified these ELGs into 40 per cent
star-forming (SF), 55 per cent composites, and 5 per cent LINERs. Star
formation rate (SFR) measured through extinction corrected Hα
fluxes increases with stellar mass (M*), attaining its peak at
M*∼109.8M☉. We observed that the cluster centre to ∼1.3Mpc
is devoid of SF galaxies and AGN. Our results suggest that the star
formation efficiency declines as the local density increases in the
cluster medium. Moreover, the SF and AGN fractions drop sharply
towards high-density environments. We observed a strong decline in SF
fraction in high M*, confirming that star formation is highly
suppressed in high-mass cluster galaxies. Finally, we determined that
SFR correlates with M* while specific SFR (sSFR) anticorrelates with
M*, both for cluster and field. This work shows the importance and
strength of TF observations when studying ELGs in clusters at higher
redshifts. We provide with this paper a catalogue of ELGs with Hβ
and/or [OIII] lines in ZwCl0024+1652 cluster.
Description:
ZwCl0024+1652 is a rich galaxy cluster at redshift z=0.395, notable
due to evidence of a possible dark matter ring around the cluster core
(Jee et al. 2007ApJ...661..728J 2007ApJ...661..728J).
Two pointings have been carried out with OSIRIS/GTC using the red
tunable filter (TF) towards Zwcl0024+1652 targeting the [OIII] and
Hβ lines. The first pointing (centred at RA=00h26m35.70s,
DEC=17d09m45.0s) referred as 'centre position' or 'position A' was
executed in GTC semesters 8-10AGOS, 75-13B, and 63-09B. The second
pointing observations (centred at RA=00h26m26.5s, DEC=17d12m15.0s)
referred as 'offset position' or 'position B' were performed in GTC
semesters 75-13B and 47-10B.
The [OIII] line observations spanned at the spectral range of
6894.8-7154.8Å that was covered by 27 evenly spaced scan steps of
Δλ=10Å. The spectral range of the Hβ observations
was 6701.1-6911.1Å. For this line, the target was covered by 22
evenly spaced scan steps of Δλ=10Å at the centre
position and 20 image slices for position B.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
tablea1.dat 251 73 Example of the catalogue describing [OIII] and
Hβ emitters in ZwCl0024+1652 cluster
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See also:
J/ApJ/591/53 : I photometry of Cl 0024+16 (Treu+, 2003)
J/ApJ/671/1503 : Cl 0024+16 and MS 0451-03 spectrophotometry (Moran+, 2007)
J/MNRAS/485/1528 : Morphological study of galaxies in ZwCl0024+1652
(Amado+, 2019)
Byte-by-byte Description of file: tablea1.dat
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Bytes Format Units Label Explanations
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1- 6 A6 --- IDHa Hα line ID number with subscript O
for offset and C for centre position
8- 13 A6 --- IDOIII OIII line ID number with subscript O for
offset and C for centre position
15- 20 A6 --- IDHb Hβ line ID number with subscript O
for offset and C for centre position
22- 24 I3 --- IDHST ? HST identifier
26- 34 F9.7 deg RAdeg Right ascension (J2000)
36- 45 F10.7 deg DEdeg Declination (J2000)
47- 65 F19.17 Mpc R Clustercentric distance
67- 80 F14.12 --- zOIII ? TF redshift measured with [OIII] line
82- 95 F14.12 --- zHb ? TF redshift measured with Hβ line
97- 104 F8.6 --- zHa ? TF redshift measured with Hα line
106- 124 F19.17 10-19W/m2 fOIII ? [OIII] Flux
126- 144 F19.17 10-19W/m2 fHb ? Hβ flux
146- 164 F19.16 10-19W/m2 fHa ? Hα flux
166- 185 F20.17 10-19W/m2 fNII ? [NII] Flux
187- 191 F5.3 0.1nm EWHb ? Hβ equivalent width
193- 217 A25 --- Lines List of emission lines detected
219- 226 F8.5 [Msun] logM* ? Logarithm of the stellar mass
228- 232 A5 --- ELGtype Emission line galaxy (ELG) type based on
Sanchez-Portal et al.
(2015A&A...578A..30S 2015A&A...578A..30S,
Cat. J/A+A/578/A30) (1)
234- 242 A9 --- BPTclass BPT-NII classification (2)
244- 245 A2 --- Morph Broad morphological class (3)
247- 251 A5 --- r_Morph Reference for Morph (4)
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Note (1): ELG type as follows:
BLAGN = Broad-line galaxy (15/73)
NLCGN = Narrow-line galaxy (13/73)
SF = Star-forming galaxy (45/73)
Note (2): BPT-NII classification as follows:
Composite = Composite galaxy (11/73)
LINER = LINER galaxy (1/73)
SF = Star-forming galaxy (8/73)
Note (3): Morphological class as follows:
ET = early-type (16/73)
LT = late-type (35/73)
Note (4): Reference as follows:
A = Treu et al. (2003ApJ...591...53T 2003ApJ...591...53T, Cat. J/ApJ/591/53)
B = Moran et al. (2007ApJ...671.1503M 2007ApJ...671.1503M, Cat. J/ApJ/671/1503)
C = Beyoro-Amado et al. (2019MNRAS.485.1528A 2019MNRAS.485.1528A, Cat. J/MNRAS/485/1528)
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History:
From electronic version of the journal
(End) Ana Fiallos [CDS] 18-Oct-2023