prikaz prve stranice dokumenta Identifying dynamically young galaxy groups via wide-angle tail galaxies: a case study in the cosmos field at z= 0.53
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Scientific paper - Original scientific paper
Identifying dynamically young galaxy groups via wide-angle tail galaxies: a case study in the cosmos field at z= 0.53
Astrophysical Journal, 713 (2010), 1; 484-490. https://doi.org/10.1088/0004-637X/713/1/484
Oklopčić, Antonija; Smolčić, Vernesa; Giodini, S.; Zamorani, G.; Bîrzan, L.; Schinnerer, E.; Carilli, C. L.; Finoguenov, A.; Lilly, S.; Koekemoer, A.; Scoville, N. Z.

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Oklopčić, A., Smolčić, V., Giodini, S., Zamorani, G., Bîrzan, L., Schinnerer, E. ... Scoville, N. Z. (2010). Identifying dynamically young galaxy groups via wide-angle tail galaxies: a case study in the cosmos field at z= 0.53. Astrophysical Journal, 713. (1), 484-490. doi: 10.1088/0004-637X/713/1/484

Oklopčić, Antonija, et al. "Identifying dynamically young galaxy groups via wide-angle tail galaxies: a case study in the cosmos field at z= 0.53." Astrophysical Journal, vol. 713, no. 1, 2010, pp. 484-490. https://doi.org/10.1088/0004-637X/713/1/484

Oklopčić, Antonija, Vernesa Smolčić, S. Giodini, G. Zamorani, L. Bîrzan, E. Schinnerer, C. L. Carilli, et al. "Identifying dynamically young galaxy groups via wide-angle tail galaxies: a case study in the cosmos field at z= 0.53." Astrophysical Journal 713, no. 1 (2010): 484-490. https://doi.org/10.1088/0004-637X/713/1/484

Oklopčić, A., et al. (2010) 'Identifying dynamically young galaxy groups via wide-angle tail galaxies: a case study in the cosmos field at z= 0.53', Astrophysical Journal, 713(1), pp. 484-490. doi: 10.1088/0004-637X/713/1/484

Oklopčić A, Smolčić V, Giodini S, Zamorani G, Bîrzan L, Schinnerer E, and sur.. Identifying dynamically young galaxy groups via wide-angle tail galaxies: a case study in the cosmos field at z= 0.53. Astrophysical Journal [Internet]. 2010 [cited 2024 October 05];713(1):484-490. doi: 10.1088/0004-637X/713/1/484

A. Oklopčić, et al., "Identifying dynamically young galaxy groups via wide-angle tail galaxies: a case study in the cosmos field at z= 0.53", Astrophysical Journal, vol. 713, no. 1, pp. 484-490, 2010. [Online]. Available at: https://urn.nsk.hr/urn:nbn:hr:217:739897. [Accessed: 05 October 2024]

Metadata
Title (english)Identifying dynamically young galaxy groups via wide-angle tail galaxies: a case study in the cosmos field at z= 0.53
AuthorAntonija Oklopčić
AuthorVernesa Smolčić
AuthorS. Giodini
AuthorG. Zamorani
AuthorL. Bîrzan
AuthorE. Schinnerer
AuthorC. L. Carilli
AuthorA. Finoguenov
AuthorS. Lilly
AuthorA. Koekemoer
AuthorN. Z. Scoville
Author's institutionUniversity of Zagreb
Faculty of Science
(Department of Physics)
Scientific / art field,
discipline and subdiscipline		NATURAL SCIENCES
Physics
Astronomy and Astrophysics
Abstract (english)
We present an analysis of a wide-angle tail (WAT) radio galaxy located in a galaxy group in the COSMOS field at a redshift of z = 0.53 (hereafter CWAT-02). We find that the host galaxy of CWAT-02 is the brightest galaxy in the group although it does not coincide with the center of mass of the system. Estimating (1) the velocity of CWAT-02, relative to the intra-cluster medium, and (2) the line-of-sight peculiar velocity of CWAT-02’s host galaxy, relative to the average velocity of the group, we find that both values are higher than those expected for a dominant galaxy in a relaxed system. This suggests that CWAT-02’s host group is dynamically young and likely in the process of an ongoing group merger. Our results are consistent with previous findings showing that the presence of a WAT galaxy in a galaxy group or cluster can be used as an indicator of dynamically young non-relaxed systems. Taking the unrelaxed state of CWAT-02’s host group into account, we discuss the impact of radio-active galactic nucleus (AGN) heating from CWAT-02 onto its environment, in the context of the missing baryon problem in galaxy groups. Our analysis strengthens recent results suggesting that radio-AGN heating may be powerful enough to expel baryons from galaxy groups.
Keywords (english)
Languageenglish
Publication typeScientific paper - Original scientific paper
Publication statusPublished
Peer reviewPeer review - international
Publication versionPublished version
Journal titleAstrophysical Journal
Numberingvol. 713, no. 1, pp. 484-490
p-ISSN0004-637X
e-ISSN1538-4357
DOIhttps://doi.org/10.1088/0004-637X/713/1/484
URN:NBNurn:nbn:hr:217:739897
Publication2010
Document URLhttp://dx.doi.org/10.1088/0004-637X/713/1/484
Type of resourceText
Access conditionsOpen access
Terms of useLicence In copyright icon
Public note© 2010 American Astronomical Society. Received 2009 November 6; accepted for publication 2010 February 23; published 2010 March 23. Based on observations with the National Radio Astronomy Observatory, which is a facility of the National Science Foundation operated under cooperative agreement by Associated Universities, Inc.
Created on2019-11-01 19:23:01