GASP XVIII: star formation quenching due to AGN feedback in the central region of a jellyfish galaxy

被引：38

作者：

George, K. ^{[1
,2
]}

Poggianti, B. M. ^{[3
]}

Bellhouse, C. ^{[4
]}

Radovich, M. ^{[3
]}

Fritz, J. ^{[5
]}

Paladino, R. ^{[6
]}

Bettoni, D. ^{[3
]}

Jaffe, Y. ^{[7
]}

Moretti, A. ^{[3
]}

Gullieuszik, M. ^{[3
]}

Vulcani, B. ^{[3
]}

Fasano, G. ^{[3
]}

Stalin, C. S. ^{[1
]}

Subramaniam, A. ^{[1
]}

Tandon, S. N. ^{[1
,8
]}

机构：

[1] Indian Inst Astrophys, Koramangala 2 Block, Bangalore 560034, Karnataka, India

[2] Christ Univ, Dept Phys, Hosur Rd, Bangalore 560029, Karnataka, India

[3] Astron Observ Padova, INAF, Vicolo Osservatorio 5, I-35122 Padua, Italy

[4] Univ Birmingham, Sch Phys & Astron, Birmingham B15 2TT, W Midlands, England

[5] UNAM, Inst Radioastron & Astrofis, Campus Morelia,AP 3-72, Morelia 58089, Michoacan, Mexico

[6] Ist Radioastron, Inst Nazl Astrofis, Via P Gobetti 101, I-40129 Bologna, Italy

[7] Univ Valparaiso, Inst Fis & Astron, Gran Bretana 1111, Valparaiso, Chile

[8] Interuniv Ctr Astron & Astrophys, Pune, Maharashtra, India

来源：

MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY | 2019年 / 487卷 / 03期

基金：

欧洲研究理事会;

关键词：

galaxies: clusters: intracluster medium; galaxies: star formation; SUPERMASSIVE BLACK-HOLES; PRESSURE STRIPPING EVENTS; NARROW-LINE REGION; OBSERVATIONAL EVIDENCE; PHYSICAL-PROPERTIES; ELLIPTIC GALAXIES; CLUSTER GALAXIES; SPIRAL GALAXIES; HOST GALAXIES; MUSE SNEAKS;

D O I：

10.1093/mnras/stz1443

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We report evidence for star formation quenching in the central 8.6 kpc region of the jellyfish galaxy JO201 that hosts an active galactic nucleus (AGN), while undergoing strong ram pressure stripping. The ultraviolet imaging data of the galaxy disc reveal a region with reduced flux around the centre of the galaxy and a horse-shoe-shaped region with enhanced flux in the outer disc. The characterization of the ionization regions based on emission line diagnostic diagrams shows that the region of reduced flux seen in the ultraviolet is within the AGN-dominated area. The CO J(2-1) map of the galaxy disc reveals a cavity in the central region. The image of the galaxy disc at redder wavelengths (9050-9250 angstrom) reveals the presence of a stellar bar. The star formation rate map of the galaxy disc shows that the star formation suppression in the cavity occurred in the last few 10(8) yr. We present several lines of evidence supporting the scenario that suppression of star formation in the central region of the disc is most likely due to the feedback from the AGN, The observations reported here make JO201 a unique case of AGN-feedback and environmental effects suppressing star formation in a spiral. galaxy.

引用

页码：3102 / 3111

页数：10