Deep observations of CO line emission from star-forming galaxies in a cluster candidate at z = 1.5

Aravena, M.; Carilli, C. L.; Salvato, M.; Tanaka, M.; Lentati, L.; Schinnerer, E.; Walter, F.; Riechers, D.; Smolčić, Vernesa; Capak, P.; Aussel, H.; Bertoldi, F.; Chapman, S. C.; Farrah, D.; Finoguenov, A.; Le Floc'h, E.; Lutz, D.; Magdis, G.; Oliver, S.; Riguccini, L.; Berta, S.; Magnelli, B.; Pozzi, F.

doi:10.1111/j.1365-2966.2012.21697.x

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Deep observations of CO line emission from star-forming galaxies in a cluster candidate at z = 1.5

Monthly Notices of the Royal Astronomical Society, 426 (2012), 1; 258-275. https://doi.org/10.1111/j.1365-2966.2012.21697.x

Aravena, M.; Carilli, C. L.; Salvato, M.; Tanaka, M.; Lentati, L.; Schinnerer, E.; Walter, F.; Riechers, D.; Smolčić, Vernesa; Capak, P.; Aussel, H.; Bertoldi, F.; Chapman, S. C.; Farrah, D.; Finoguenov, A.; Le Floc'h, E.; Lutz, D.; Magdis, G.; Oliver, S.; Riguccini, L.; Berta, S.; Magnelli, B.; Pozzi, F. Više autora...

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APA 6th Edition

Aravena, M., Carilli, C. L., Salvato, M., Tanaka, M., Lentati, L., Schinnerer, E. ... Pozzi, F. (2012). Deep observations of CO line emission from star-forming galaxies in a cluster candidate at z = 1.5. Monthly Notices of the Royal Astronomical Society, 426. (1), 258-275. doi: 10.1111/j.1365-2966.2012.21697.x

MLA 8th Edition

Aravena, M., et al. "Deep observations of CO line emission from star-forming galaxies in a cluster candidate at z = 1.5." Monthly Notices of the Royal Astronomical Society, vol. 426, br. 1, 2012, str. 258-275. https://doi.org/10.1111/j.1365-2966.2012.21697.x

Chicago 17th Edition

Aravena, M., C. L. Carilli, M. Salvato, M. Tanaka, L. Lentati, E. Schinnerer, F. Walter, et al. "Deep observations of CO line emission from star-forming galaxies in a cluster candidate at z = 1.5." Monthly Notices of the Royal Astronomical Society 426, br. 1 (2012): 258-275. https://doi.org/10.1111/j.1365-2966.2012.21697.x

Harvard

Aravena, M., et al. (2012) 'Deep observations of CO line emission from star-forming galaxies in a cluster candidate at z = 1.5', Monthly Notices of the Royal Astronomical Society, 426(1), str. 258-275. doi: 10.1111/j.1365-2966.2012.21697.x

Vancouver

Aravena M, Carilli CL, Salvato M, Tanaka M, Lentati L, Schinnerer E, i sur.. Deep observations of CO line emission from star-forming galaxies in a cluster candidate at z = 1.5. Monthly Notices of the Royal Astronomical Society [Internet]. 2012. [pristupljeno 03.12.2024.];426(1):258-275. doi: 10.1111/j.1365-2966.2012.21697.x

IEEE

M. Aravena, et al., "Deep observations of CO line emission from star-forming galaxies in a cluster candidate at z = 1.5", Monthly Notices of the Royal Astronomical Society, vol. 426, br. 1, str. 258-275, 2012. [Online]. Dostupno na: https://urn.nsk.hr/urn:nbn:hr:217:113822. [Citirano: 03.12.2024.]

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Naslov (engleski)	Deep observations of CO line emission from star-forming galaxies in a cluster candidate at z = 1.5
Autor	M. Aravena
Autor	C. L. Carilli
Autor	M. Salvato
Autor	M. Tanaka
Autor	L. Lentati
Autor	E. Schinnerer
Autor	F. Walter
Autor	D. Riechers
Autor	Vernesa Smolčić
Autor	P. Capak
Autor	H. Aussel
Autor	F. Bertoldi
Autor	S. C. Chapman
Autor	D. Farrah
Autor	A. Finoguenov
Autor	E. Le Floc'h
Autor	D. Lutz
Autor	G. Magdis
Autor	S. Oliver
Autor	L. Riguccini
Autor	S. Berta
Autor	B. Magnelli
Autor	F. Pozzi
Autorova ustanova	Sveučilište u Zagrebu Prirodoslovno-matematički fakultet (Fizički odsjek)
Znanstveno / umjetničko područje, polje i grana	PRIRODNE ZNANOSTI Fizika
Sažetak (engleski)	We report results from a deep Jansky Very Large Array (JVLA) search for 12CO J = 1-0 line emission from galaxies in a candidate galaxy cluster at z ˜ 1.55 in the COSMOS field. We target four galaxies with optical spectroscopic redshifts in the range z = 1.47-1.59, consistent with the likely redshift for the candidate galaxy cluster. Two of these four galaxies, ID 51613 and ID 51813, are nominally detected in CO 1-0 line emission at the 3-4σ level. We find CO luminosities of (2.42 ± 0.58) × 1010 K km s-1 pc2 and (1.26 ± 0.38) × 1010 K km s-1 pc2, respectively. Taking advantage from the clustering and expanded 2-GHz bandwidth of the JVLA, we perform a search for emission lines in the proximity of optical sources within the field of view of our observations (60 arcsec). We limit our search to galaxies with KS < 23.5 (AB) and zphot = 1.2-1.8. We find two bright optical galaxies, ID 51207 and ID 51380, to be associated with significant emission line peaks (>4σ) in the data cube, which we identify with the CO 1-0 line emission. To test the reliability of the line peaks found, we performed a parallel search for line peaks using a Bayesian inference method. Both CO line emitting candidates are identified with probabilities of 13 per cent and 72 per cent that there are line emitting sources in each case, respectively. Monte Carlo simulations show that such associations are statistically significant, with probabilities of chance association of 3.5 per cent and 10.7 per cent for ID 51207 and ID 51380, respectively. Modelling of their optical/IR spectral energy distributions indicates that the CO detected galaxies and candidates have stellar masses and star formation rates in the range (0.3-1.1) × 1011 Msun and 60-160 Msun yr-1, with star formation efficiencies comparable to that found in other star-forming galaxies at similar redshifts. By comparing the space density of CO emitters derived from our observations with the space density derived from previous CO detections at z ˜ 1.5, and with semi-analytic predictions for the CO luminosity function, we suggest that the latter tend to underestimate the number of CO galaxies detected at high redshift. Finally, we argue about the benefits of future searches for molecular gas line emission in clustered fields with upcoming submillimetre/radio facilities.
Ključne riječi (engleski)
Jezik	engleski
Vrsta publikacije	Znanstveni rad - Izvorni znanstveni rad
Status objave	Objavljen
Vrsta recenzije	Recenziran - međunarodna recenzija
Verzija publikacije	Objavljena verzija rada (izdavačev PDF)
Naslov časopisa	Monthly Notices of the Royal Astronomical Society
Brojčani podaci	vol. 426, br. 1, str. 258-275
p-ISSN	0035-8711
e-ISSN	1365-2966
DOI	https://doi.org/10.1111/j.1365-2966.2012.21697.x
URN:NBN	urn:nbn:hr:217:113822
Datum objave publikacije	2012
URL dokumenta	https://academic.oup.com/mnras/article/426/1/258/1007815
Vrsta resursa	Tekst
Prava pristupa	Otvoreni pristup
Uvjeti korištenja
Javna napomena	© 2012 The Authors. Published by Oxford University Press on behalf of the Royal Astronomical Society. All Rights reserved. Accepted 2012 July 10. Received 2012 May 30; in original form 2012 April 8.
Datum i vrijeme pohrane	2019-11-16 10:57:26