Dissecting jellyfish galaxies with MUSE

Transcription

1 Dissecting jellyfish galaxies with MUSE Yara L. Jaffé (ESO Chile) & the GASP collaboration

2 reviewby byboselli Boselli &&Gavazzi (2006) SeeSee review Gavazzi (2006)

3 Gas stripping of cluster galaxies cold gas HI stripping in the Virgo cluster (VIVA survey: Chung+2009) More evidence for HI stripping in Virgo & other clusters: Cayatte+ 1990, Veilleux+ 1999, Vollmer+ 1999, Vollmer+ 2001, Vollmer 2003, Kenney+ 2004, Vollmer+ 2004a, 2004b, Koopmann & Kenney 2004, Crowl , Vollmer & Huchtmeier 2007, Yoon+ 2017, Bravo-Alfaro+ 2000, 2001, Kemp+ 2005, Rasmussen+ 2006, Levy+ 2007, Jaffe+2015, Yoon+2017

4 Ram-pressure stripping simulations Consequences of stripping: Tails of gas emerge from the disk, new stars form in knots SPH simulations (Steinhauser+2012) t = 100 Myr Truncated disks (outside-in stripping) Disturbed gas kinematics SF can be enhanced / suppressed t = 50 Myr t = 0 Myr Roediger & Hensler Kronberger et al Roediger & Brügger Kapferer et al Jáchym et al Tonnesen & Bryan Bekki 2009, Bekki & Couch Book & Benson Steinhauser et al Roediger et al Bischko et al , Steinhauser et al

5 Jellyfish galaxies stripped tails seen in optical/uv Young stars found in the tails and shock front z=0.2 Owen+2006 z=0.23 Cortese <z<0.43 (Ebeling+2014) (see also Yagi+2010, Rawle+2014, Fumagalli+2014, Fossati+2015, McPartland+2016) z=0.31 Owers+2007 Poggianti+2016: > 400 stripped candidates

6 GAs Stripping Phenomena with MUSE (GASP) 120h of to study 114 jellyfish (and non-stripped) galaxies How, where & why gas is removed from galaxies Amount of SF involved & implications for quenching and galaxy evolution Efficiency of RPS and contribution to ICM B. Poggianti (PI) M. Gullieuszik A. Moretti G. Fasano D. Bettoni M. D'Onofrio B. Vulcani Y. Jaffé C. Bellhouse G. Hau S. McGee J. Fritz S. Tonnesen Y-K. Sheen M. Owers A. Omizzolo A. Cava W. J. Couch J. van Gorkom & others

7 MUSE: Multi Unit Spectroscopic Explorer Mounted on UT4 VLT (Paranal) 24 IFUs Produces spectra in one go! A (R ~ ) 1x1arcmin2 and spatial sampling of 0.2x0.2 arcsec2 in WFM Now WFM has AO (SV last month!) NFM-AO to come next year AOF + UT4 Picture by Roland Bacon

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10 Credit: ESO / GASP

11 A jellyfish prototype: JO206-9x1010 Mo galaxy - In a 500 km/s (merging) cluster - Stripping in the plane of the sky (GASP I: Poggianti et al. 2017) 2 MUSE pointings

12 Dissecting Jellyfish with MUSE

13 Dissecting Jellyfish with MUSE

14 Dissecting Jellyfish with MUSE (Poggianti et al. 2017)

15 Dissecting Jellyfish with MUSE (Poggianti et al. 2017)

16 A zoo of jellyfish Stripping Peak-stripping Post-stripping?

17 velocity / s Cluster galaxies in phase-space Distance from cl. centre / R200 Adapted from Rhee et al. (2017)

18 Ram-pressure stripping in phase-space velocity / s P ram = r ICM v gal² (Gunn & Gott 1972) Distance from cl. centre / R200 Jaffe et al. in prep. See also Jaffé et al & Yoon et al. 2017

19 Vel. / scl The orbits of cluster jellyfish galaxies r / R200 Jaffé, et al. (submitted.) Jellyfish sequence in phase-space Many of them are in merging clusters Jellyfish with the longest tails are all massive and close to the core

20 The orbits of cluster jellyfish galaxies r / R200 Jellyfish on fist passage through the cluster in radial orbits Slow quenching after that Jaffé, et al. (submitted.)

21 An extreme l.o.s. jellyfish Environment: central part of Abell 85 kpc 00) 0 36 x R2 5 (0.1 JO201: Flying though the cluster at supersonic speeds along the l.o.s. Highly radial orbit GASP II: Bellhouse, Jaffé et al. (2017)

22 An extreme l.o.s. jellyfish d z a 3D map of the Ha emission in JO201 A Callum Bellhouse production

23 (Many) interesting specimens JO171 (A. Moretti et al. submitted) Stripped Hoag's object in massive merging cluster > 6x109 yr P11695 (B. Vulcani et al. submitted) Isolated jellyfish-like galaxy Lopsided morphology likely caused by gas accretion 2x107-6x108 yr < 2x107 yr P96949 (B. Vulcani et al. submitted) Early-stage merger between late and early type galaxies 9 TDG formed in the merger: Mstar = Mdyn = 6x10 Msun; r = 2 kpc St 1 detailed characterization of a TDG candidate beyond the local Universe!

24 Jellyfish with active nuclei AGN ionization cone along the tentacles! M. Guillieuzik et al B. Poggianti et al. 2017b

25 Poggianti, Jaffé, et al. (2017, Nature ): 6/7 of GASP's heavily stripped galaxies host an AGN! (based on BPT + X-ray emission) AGN are rare: 3% in WINGS cluster galaxies (Marziani et al. 2017) and 8% in field galaxies (Brinchmann et al. 2004)

26 Poggianti, Jaffé, et al. (2017, Nature ): 6/7 of GASP's heavily stripped galaxies host an AGN! (based on BPT + X-ray emission) AGN are rare: 3% in WINGS cluster galaxies (Marziani et al. 2017) and 8% in field galaxies (Brinchmann et al. 2004) Phase-space AGN Stripping v / s St r ip pi ng Stripping AGN r / R200 Supporting evidence from observations (Haines+2012, Pimbblet+2013), and MHD simulations (Ramos-Martinez in prep.)

27 GASP so far GASP: Gas Stripping Phenomena with MUSE 84/114 (74%) MUSE obs. completed Follow-ups: JVLA (HI), Apex, ALMA (CO), Astrosat (UV) MUSE data reveals a zoo of jellyfish RPS effective in a wide range of galaxy mass & environments Jellyfish prefer radial orbits in clusters Central BH fed during intense RPS RPS unwinding spiral arms? 8 GASP papers accepted/submitted & many more to come! Check out our web.oapd.inaf.it/gasp