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Constraining the du...
Constraining the duration of ram pressure stripping features in the optical from the direction of jellyfish galaxy tails
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- Salinas Froemel, Vicente Horacio, 1996 (author)
- Chalmers tekniska högskola,Chalmers University of Technology,Universidad de Valparaíso,University of Valparaíso
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Jaffé, Yara L. (author)
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Smith, R. J. (author)
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- Shinn, Jong Ho (author)
- Korea Astronomy and Space Science Institute
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- Crossett, Jacob P. (author)
- Universidad de Valparaíso,University of Valparaíso
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- Gullieuszik, Marco (author)
- Istituto nazionale di astrofisica (INAF)
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- González-Torà, Gemma (author)
- European Southern Observatory (ESO)
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Piraino-Cerda, Franco (author)
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- Poggianti, B. M. (author)
- Istituto nazionale di astrofisica (INAF)
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- Vulcani, B. (author)
- Istituto nazionale di astrofisica (INAF)
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- Biviano, Andrea (author)
- Osservatorio Astronomico di Trieste,IFPU—Institute for Fundamental Physics of the Universe
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- Lourenço, Ana C.C. (author)
- Universidad de Valparaíso,University of Valparaíso,European Southern Observatory Santiago
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- Bilton, Lawrence E. (author)
- University of Hull,Universidad de Valparaíso,University of Valparaíso,Pontificia Universidad Católica de Valparaíso
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- Kelkar, Kshitija (author)
- Universidad de Valparaíso,University of Valparaíso
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Calderón-Castillo, Paula (author)
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(creator_code:org_t)
- 2024
- 2024
- English.
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In: Monthly Notices of the Royal Astronomical Society. - 0035-8711 .- 1365-2966. ; 533:1, s. 341-359
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Abstract
Subject headings
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- Ram pressure stripping is perhaps the most efficient mechanism for removing gas and quenching galaxies in dense environments, as they move through the intergalactic medium. Extreme examples of on-going ram pressure stripping are known as jellyfish galaxies, characterized by a tail of stripped material that can be directly observed in multiple wavelengths. Using the largest homogeneous broad-band optical jellyfish candidate sample in local clusters known to date, we measure the angle between the direction of the tails visible in the galaxies, and the direction towards the host cluster centre. We find that 33 per cent of the galaxy tails point away from the cluster centre, 18 per cent point towards the cluster centre, and 49 per cent point elsewhere. Moreover, we find stronger signatures of ram pressure stripping happening on galaxies with a tail pointing away and towards the cluster centre, and larger velocity dispersion profiles for galaxies with tails pointing away. These results are consistent with a scenario where ram pressure stripping has a stronger effect for galaxies following radial orbits on first infall. The results also suggest that in many cases, radially infalling galaxies are able to retain their tails after pericenter and continue to experience significant on-going ram pressure stripping. We further constrain the lifespan of the optical tails from the moment they first appear to the moment they disappear, by comparing the observed tail directions with matched N-body simulations through Bayesian parameter estimation. We obtain that galaxy tails appear for the first time at ∼ 1.16R200 and disappear ∼ 660 Myr after pericenter.
Subject headings
- NATURVETENSKAP -- Fysik -- Astronomi, astrofysik och kosmologi (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences -- Astronomy, Astrophysics and Cosmology (hsv//eng)
Keyword
- galaxies: clusters: intracluster medium
- galaxies: clusters: general
- galaxies: evolution
Publication and Content Type
- art (subject category)
- ref (subject category)
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Salinas Froemel, ...
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Jaffé, Yara L.
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Smith, R. J.
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Shinn, Jong Ho
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Crossett, Jacob ...
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Gullieuszik, Mar ...
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show more...
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González-Torà, G ...
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Piraino-Cerda, F ...
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Poggianti, B. M.
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Vulcani, B.
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Biviano, Andrea
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Lourenço, Ana C. ...
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Bilton, Lawrence ...
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Kelkar, Kshitija
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Calderón-Castill ...
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show less...
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- NATURAL SCIENCES
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NATURAL SCIENCES
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and Physical Science ...
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and Astronomy Astrop ...
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Monthly Notices ...
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Chalmers University of Technology