Highly perturbed molecular gas in infalling cluster galaxies: the case of CGCG97-079

	Highly perturbed molecular gas in infalling cluster galaxies: the case of CGCG97-079
	Scott, T. C.1,2; Usero, A.3; Brinks, E.2; Bravo-Alfaro, H.4; Cortese, L.5; Boselli, A.6; Argudo-Fernandez, M.7,8,9
刊名	MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
	2015-10-11
卷号	453 期号:1 页码:328-337
关键词	galaxies: clusters: individual: (Abell 1367, CGCG 97-079) galaxies: interactions galaxies: ISM
英文摘要	We report on CO (J = 2 -> 1) mapping with the IRAM 30-m HEtrodyne Receiver Array (HERA) of CGCG 97-079, an irregular galaxy in the merging galaxy cluster Abell 1367 (z = 0.022). We find that similar to 80 per cent of the detected CO (J = 2 -> 1) is projected within a 16 arcsec(2) (6.5 kpc(2)) region to the north and west of the optical/NIR centre, with the intensity maximum offset similar to 10 arcsec (4 kpc) NW of the optical/NIR centre and similar to 7 arcsec (3 kpc) south-east of the HI intensity maximum. Evolutionary synthesis models indicate CGCG 97-079 experienced a burst of star formation similar to 10(8) yr ago, most likely triggered by a tidal interaction with CGCG 97-073. For CGCG 97-079 we deduce an infall velocity to the cluster of similar to 1000 km s(-1) and moderate ram pressure (P-ram approximate to 10(-11) dyne cm(-2)). The observed offset in CGCG 97-079 of the highest density HI and CO (J = 2 -> 1) from the stellar components has not previously been observed in galaxies currently undergoing ram pressure stripping, although previous detailed studies of gas morphology and kinematics during ram pressure stripping were restricted to significantly more massive galaxies with deeper gravitational potential wells. We conclude the observed cold gas density maxima offsets are most likely the result of ram pressure and/or the high-speed tidal interaction with CGCG 97-073. However ram pressure stripping is likely to be playing a major role in the perturbation of lower density gas.
WOS标题词	Science & Technology ; Physical Sciences
类目[WOS]	Astronomy & Astrophysics
研究领域[WOS]	Astronomy & Astrophysics
关键词[WOS]	3 PECULIAR GALAXIES ; STAR-FORMATION RATE ; S(4)G IRAC 3.6 ; RAM-PRESSURE ; IRREGULAR GALAXIES ; VIRGO CLUSTER ; ABELL 1367 ; H I ; STELLAR MASS ; DENSITY ENVIRONMENTS
收录类别	SCI
语种	英语
WOS记录号	WOS:000366215500027
内容类型	期刊论文
源URL	[http://119.78.226.72/handle/331011/28548]
专题	上海天文台_星系宇宙学重点实验室
作者单位	1.Inst Astrophys & Space Sci IA, P-4150762 Oporto, Portugal 2.Univ Hertfordshire, Ctr Astrophys Res, Hatfield AL10 9AB, Herts, England 3.Observ Astron Nacl, E-28014 Madrid, Spain 4.Univ Guanajuato, Dept Astron, Guanajuato 36000, Mexico 5.Swinburne Univ Technol, Ctr Astrophys & Supercomp, Hawthorn, Vic 3122, Australia 6.Aix Marseille Univ, CNRS, LAM, UMR 7326, F-13388 Marseille, France 7.CSIC, Inst Astrofis Andalucia, E-18080 Granada, Spain 8.Univ Granada, Dept Fis Teor & Cosmos, E-18071 Granada, Spain 9.Chinese Acad Sci, Shanghai Astron Observ, Key Lab Res Galaxies & Cosmol, Shanghai 200030, Peoples R China
推荐引用方式 GB/T 7714	Scott, T. C.,Usero, A.,Brinks, E.,et al. Highly perturbed molecular gas in infalling cluster galaxies: the case of CGCG97-079[J]. MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY,2015,453(1):328-337.
APA	Scott, T. C..,Usero, A..,Brinks, E..,Bravo-Alfaro, H..,Cortese, L..,...&Argudo-Fernandez, M..(2015).Highly perturbed molecular gas in infalling cluster galaxies: the case of CGCG97-079.MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY,453(1),328-337.
MLA	Scott, T. C.,et al."Highly perturbed molecular gas in infalling cluster galaxies: the case of CGCG97-079".MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY 453.1(2015):328-337.