Star-forming and gas-rich brightest cluster galaxies at z ∼ 0.4 in the Kilo-Degree Survey
Brightest cluster galaxies (BCGs) are typically massive ellipticals at the centers of clusters. They are believed to experience strong environmental processing, and their mass assembly and star formation history are still debated. We have selected three star-forming BCGs in the equatorial field of t...
Saved in:
| Main Authors: | , , , , , , , , , , , |
|---|---|
| Format: | Article (Journal) |
| Language: | English |
| Published: |
04 November 2022
|
| In: |
Astronomy and astrophysics
Year: 2022, Volume: 667, Pages: 1-15 |
| ISSN: | 1432-0746 |
| DOI: | 10.1051/0004-6361/202243689 |
| Online Access: | Verlag, lizenzpflichtig, Volltext: https://doi.org/10.1051/0004-6361/202243689 Verlag, lizenzpflichtig, Volltext: https://www.aanda.org/articles/aa/abs/2022/11/aa43689-22/aa43689-22.html 
|
| Author Notes: | G. Castignani, M. Radovich, F. Combes, P. Salomé, M. Maturi, L. Moscardini, S. Bardelli, C. Giocoli, G. Lesci, F. Marulli, E. Puddu, and M. Sereno |
MARC
| LEADER | 00000caa a2200000 c 4500 | ||
|---|---|---|---|
| 001 | 1832645703 | ||
| 003 | DE-627 | ||
| 005 | 20230706235946.0 | ||
| 007 | cr uuu---uuuuu | ||
| 008 | 230130s2022 xx |||||o 00| ||eng c | ||
| 024 | 7 | |a 10.1051/0004-6361/202243689 |2 doi | |
| 035 | |a (DE-627)1832645703 | ||
| 035 | |a (DE-599)KXP1832645703 | ||
| 035 | |a (OCoLC)1389535837 | ||
| 040 | |a DE-627 |b ger |c DE-627 |e rda | ||
| 041 | |a eng | ||
| 084 | |a 29 |2 sdnb | ||
| 100 | 1 | |a Castignani, Gianluca |d 1986- |e VerfasserIn |0 (DE-588)1279515988 |0 (DE-627)1832647048 |4 aut | |
| 245 | 1 | 0 | |a Star-forming and gas-rich brightest cluster galaxies at z ∼ 0.4 in the Kilo-Degree Survey |c G. Castignani, M. Radovich, F. Combes, P. Salomé, M. Maturi, L. Moscardini, S. Bardelli, C. Giocoli, G. Lesci, F. Marulli, E. Puddu, and M. Sereno |
| 264 | 1 | |c 04 November 2022 | |
| 300 | |a 15 | ||
| 336 | |a Text |b txt |2 rdacontent | ||
| 337 | |a Computermedien |b c |2 rdamedia | ||
| 338 | |a Online-Ressource |b cr |2 rdacarrier | ||
| 500 | |a Gesehen am 30.01.2023 | ||
| 500 | |a Spectra in Fig. 3 are only available at the CDS via anonymous ftp to cdsarc.cds.unistra.fr (130.79.128.5) or via ttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/A+A/667/A52 | ||
| 520 | |a Brightest cluster galaxies (BCGs) are typically massive ellipticals at the centers of clusters. They are believed to experience strong environmental processing, and their mass assembly and star formation history are still debated. We have selected three star-forming BCGs in the equatorial field of the Kilo-Degree Survey (KiDS). They are KiDS 0920 (z = 0.3216), KiDS 1220 (z = 0.3886), and KiDS 1444 (z = 0.4417). We have observed them with the IRAM 30 m telescope in the first three CO transitions. We remarkably detected all BCGs at high signal-to-noise ratio, S/N> ≃ (3.8 − 10.2), for a total of seven detected lines out of eight, corresponding to a success rate of 88%. This allows us to double the number of distant BCGs with clear detections in at least two CO lines. We then combined our observations with available stellar, star formation, and dust properties of the BCGs and compared them with a sample of ∼100 distant cluster galaxies with observations in CO. Our analysis yields large molecular gas reservoirs MH2 ≃ (0.5 − 1.4)×10 11 M⊙, high excitation ratios , long depletion times τ ≃ (2 − 4) Gyr, and high MH2/Mdust ≃ (170 − 300) for the three targeted BCGs. The excitation ratio r31 of intermediate-z BCGs, including RX1532 and M1932 from previous studies, appears to be well correlated with the star formation rate and efficiency, which suggests that excited gas is found only in highly star-forming and cool-core BCGs. By performing color-magnitude plots and a red-sequence modeling, we find that recent bursts of star formation are needed to explain the fact that the BCGs are measurably bluer than photometrically selected cluster members. To explain the global observed phenomenology, we suggest that a substantial amount of the molecular gas has been accreted by the KiDS BCGs but still not efficiently converted into stars. KiDS 1220 also shows a double-horn emission in CO(3→2), which implies a low gas concentration. The modeling of the spectrum yields an extended molecular gas reservoir of ∼9 kpc, which is reminiscent of the mature extended-disk phase observed in some local BCGs. | ||
| 700 | 1 | |a Radovich, M. |e VerfasserIn |4 aut | |
| 700 | 1 | |a Combes, F. |e VerfasserIn |4 aut | |
| 700 | 1 | |a Salomé, P. |e VerfasserIn |4 aut | |
| 700 | 1 | |a Maturi, Matteo |e VerfasserIn |0 (DE-588)110256138X |0 (DE-627)860405699 |0 (DE-576)425587452 |4 aut | |
| 700 | 1 | |a Moscardini, L. |e VerfasserIn |4 aut | |
| 700 | 1 | |a Bardelli, S. |e VerfasserIn |4 aut | |
| 700 | 1 | |a Giocoli, C. |e VerfasserIn |4 aut | |
| 700 | 1 | |a Lesci, G. |e VerfasserIn |4 aut | |
| 700 | 1 | |a Marulli, F. |e VerfasserIn |4 aut | |
| 700 | 1 | |a Puddu, E. |e VerfasserIn |4 aut | |
| 700 | 1 | |a Sereno, M. |e VerfasserIn |4 aut | |
| 773 | 0 | 8 | |i Enthalten in |t Astronomy and astrophysics |d Les Ulis : EDP Sciences, 1969 |g 667(2022) vom: Nov., Artikel-ID A52, Seite 1-15 |h Online-Ressource |w (DE-627)253390222 |w (DE-600)1458466-9 |w (DE-576)072283351 |x 1432-0746 |7 nnas |a Star-forming and gas-rich brightest cluster galaxies at z ∼ 0.4 in the Kilo-Degree Survey |
| 773 | 1 | 8 | |g volume:667 |g year:2022 |g month:11 |g elocationid:A52 |g pages:1-15 |g extent:15 |a Star-forming and gas-rich brightest cluster galaxies at z ∼ 0.4 in the Kilo-Degree Survey |
| 856 | 4 | 0 | |u https://doi.org/10.1051/0004-6361/202243689 |x Verlag |x Resolving-System |z lizenzpflichtig |3 Volltext |
| 856 | 4 | 0 | |u https://www.aanda.org/articles/aa/abs/2022/11/aa43689-22/aa43689-22.html |x Verlag |z lizenzpflichtig |3 Volltext |
| 951 | |a AR | ||
| 992 | |a 20230130 | ||
| 993 | |a Article | ||
| 994 | |a 2022 | ||
| 998 | |g 110256138X |a Maturi, Matteo |m 110256138X:Maturi, Matteo |d 700000 |d 714000 |d 714200 |d 130000 |e 700000PM110256138X |e 714000PM110256138X |e 714200PM110256138X |e 130000PM110256138X |k 0/700000/ |k 1/700000/714000/ |k 2/700000/714000/714200/ |k 0/130000/ |p 5 | ||
| 999 | |a KXP-PPN1832645703 |e 4254923317 | ||
| BIB | |a Y | ||
| SER | |a journal | ||
| JSO | |a {"language":["eng"],"relHost":[{"recId":"253390222","id":{"issn":["1432-0746"],"zdb":["1458466-9"],"eki":["253390222"]},"name":{"displayForm":["European Southern Observatory (ESO)"]},"pubHistory":["1.1969 -"],"part":{"extent":"15","text":"667(2022) vom: Nov., Artikel-ID A52, Seite 1-15","volume":"667","pages":"1-15","year":"2022"},"type":{"bibl":"periodical","media":"Online-Ressource"},"title":[{"title_sort":"Astronomy and astrophysics","subtitle":"an international weekly journal","title":"Astronomy and astrophysics"}],"titleAlt":[{"title":"Astronomy & astrophysics"},{"title":"a European journal"}],"corporate":[{"role":"isb","roleDisplay":"Herausgebendes Organ","display":"European Southern Observatory"}],"origin":[{"dateIssuedDisp":"1969-","publisherPlace":"Les Ulis ; Berlin ; Heidelberg","publisher":"EDP Sciences ; Springer","dateIssuedKey":"1969"}],"physDesc":[{"extent":"Online-Ressource"}],"note":["Gesehen am 21.06.2024","Erscheint 36mal jährlich in 12 Bänden zu je 3 Ausgaben","Fortsetzung der Druck-Ausgabe"],"language":["eng"],"disp":"Star-forming and gas-rich brightest cluster galaxies at z ∼ 0.4 in the Kilo-Degree SurveyAstronomy and astrophysics"}],"physDesc":[{"extent":"15 S."}],"note":["Gesehen am 30.01.2023","Spectra in Fig. 3 are only available at the CDS via anonymous ftp to cdsarc.cds.unistra.fr (130.79.128.5) or via ttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/A+A/667/A52"],"origin":[{"dateIssuedKey":"2022","dateIssuedDisp":"04 November 2022"}],"title":[{"title_sort":"Star-forming and gas-rich brightest cluster galaxies at z ∼ 0.4 in the Kilo-Degree Survey","title":"Star-forming and gas-rich brightest cluster galaxies at z ∼ 0.4 in the Kilo-Degree Survey"}],"person":[{"family":"Castignani","display":"Castignani, Gianluca","roleDisplay":"VerfasserIn","given":"Gianluca","role":"aut"},{"family":"Radovich","roleDisplay":"VerfasserIn","display":"Radovich, M.","given":"M.","role":"aut"},{"family":"Combes","given":"F.","roleDisplay":"VerfasserIn","display":"Combes, F.","role":"aut"},{"role":"aut","family":"Salomé","display":"Salomé, P.","roleDisplay":"VerfasserIn","given":"P."},{"role":"aut","family":"Maturi","roleDisplay":"VerfasserIn","display":"Maturi, Matteo","given":"Matteo"},{"role":"aut","given":"L.","roleDisplay":"VerfasserIn","display":"Moscardini, L.","family":"Moscardini"},{"role":"aut","display":"Bardelli, S.","roleDisplay":"VerfasserIn","given":"S.","family":"Bardelli"},{"role":"aut","family":"Giocoli","display":"Giocoli, C.","roleDisplay":"VerfasserIn","given":"C."},{"role":"aut","display":"Lesci, G.","roleDisplay":"VerfasserIn","given":"G.","family":"Lesci"},{"role":"aut","roleDisplay":"VerfasserIn","given":"F.","display":"Marulli, F.","family":"Marulli"},{"role":"aut","family":"Puddu","roleDisplay":"VerfasserIn","display":"Puddu, E.","given":"E."},{"role":"aut","roleDisplay":"VerfasserIn","display":"Sereno, M.","given":"M.","family":"Sereno"}],"type":{"media":"Online-Ressource","bibl":"article-journal"},"name":{"displayForm":["G. Castignani, M. Radovich, F. Combes, P. Salomé, M. Maturi, L. Moscardini, S. Bardelli, C. Giocoli, G. Lesci, F. Marulli, E. Puddu, and M. Sereno"]},"recId":"1832645703","id":{"doi":["10.1051/0004-6361/202243689"],"eki":["1832645703"]}} | ||
| SRT | |a CASTIGNANISTARFORMIN0420 | ||