GASP - XVII. H I imaging of the jellyfish galaxy JO206: Gas stripping and enhanced star formation

M. Ramatsoku; P. Serra; B. M. Poggianti; A. Moretti; M. Gullieuszik; D. Bettoni; T. Deb; J. Fritz; J. H. van Gorkom; Y. L. Jaffé; S. Tonnesen; M. A. W. Verheijen; B. Vulcani; B. Hugo; G. I. G. Józsa; F. M. Maccagni; S. Makhathini; A. Ramaila; O. Smirnov; K. Thorat

doi:10.1093/mnras/stz1609

GASP - XVII. H I imaging of the jellyfish galaxy JO206: Gas stripping and enhanced star formation

M. Ramatsoku^*, P. Serra, B. M. Poggianti, A. Moretti, M. Gullieuszik, D. Bettoni, T. Deb, J. Fritz, J. H. van Gorkom, Y. L. Jaffé, S. Tonnesen, M. A. W. Verheijen, B. Vulcani, B. Hugo, G. I. G. Józsa, F. M. Maccagni, S. Makhathini, A. Ramaila, O. Smirnov, K. Thorat

^*Corresponding author for this work

Astronomy

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Abstract

We present VLA H I observations of JO206, a prototypical ram-pressure- stripped galaxy in the GASP sample. This massive galaxy (M_* = 8.5 × 10¹⁰ M_☉) is located at a redshift of z = 0.0513, near the centre of the low-mass galaxy cluster, IIZw108 (σ ̃ 575 km s^-1). JO206 is characterized by a long tail (≥90 kpc) of ionized gas stripped away by ram pressure. We find a similarly long H I tail in the same direction as the ionized gas tail and measure a total H I mass of 3.2 × 10⁹ M_☉. This is about half the expected H I mass given the stellar mass and surface density of JO206. A total of 1.8 × 10⁹ M_☉ (60 per cent) of the detected H I is in the gas-stripped tail. An analysis of the star formation rate shows that the galaxy is forming more stars compared to galaxies with the same stellar and H I mass. On average we find an H I gas depletion time of ̃0.5 Gyr which is about four times shorter than that of `normal' spiral galaxies. We performed a spatially resolved analysis of the relation between star formation rate density and gas density in the disc and tail of the galaxy at the resolution of our H I data. The star formation efficiency of the disc is about 10 times higher than that of the tail at fixed H I surface densities. Both the inner and outer parts of JO206 show an enhanced star formation compared to regions of similar H I surface density in field galaxies. The enhanced star formation is due to ram-pressure stripping during the galaxy's first infall into the cluster.

Original language	English
Pages (from-to)	4580-4591
Number of pages	12
Journal	Monthly Notices of the Royal Astronomical Society
Volume	487
Issue number	4
DOIs	https://doi.org/10.1093/mnras/stz1609
Publication status	Published - Aug-2019

Keywords

galaxies: clusters: intracluster medium
Astrophysics - Astrophysics of Galaxies
MORPHOLOGY-DENSITY RELATION
ARECIBO SDSS SURVEY
RAM-PRESSURE
IRREGULAR GALAXIES
SPIRAL GALAXIES
DISC GALAXIES
VIRGO CLUSTER
ATOMIC GAS
FORMATION EFFICIENCY
PHYSICAL-PROPERTIES

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GASP – XVII. HIimaging of the jellyfish galaxy JO206: gas strippingand enhanced star formationFinal publisher's version, 5.66 MBLicence: Unspecified

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Ramatsoku, M., Serra, P., Poggianti, B. M., Moretti, A., Gullieuszik, M., Bettoni, D., Deb, T., Fritz, J., van Gorkom, J. H., Jaffé, Y. L., Tonnesen, S., Verheijen, M. A. W., Vulcani, B., Hugo, B., Józsa, G. I. G., Maccagni, F. M., Makhathini, S., Ramaila, A., Smirnov, O., & Thorat, K. (2019). GASP - XVII. H I imaging of the jellyfish galaxy JO206: Gas stripping and enhanced star formation. Monthly Notices of the Royal Astronomical Society, 487(4), 4580-4591. https://doi.org/10.1093/mnras/stz1609

Ramatsoku, M. ; Serra, P. ; Poggianti, B. M. ; Moretti, A. ; Gullieuszik, M. ; Bettoni, D. ; Deb, T. ; Fritz, J. ; van Gorkom, J. H. ; Jaffé, Y. L. ; Tonnesen, S. ; Verheijen, M. A. W. ; Vulcani, B. ; Hugo, B. ; Józsa, G. I. G. ; Maccagni, F. M. ; Makhathini, S. ; Ramaila, A. ; Smirnov, O. ; Thorat, K. / GASP - XVII. H I imaging of the jellyfish galaxy JO206 : Gas stripping and enhanced star formation. In: Monthly Notices of the Royal Astronomical Society. 2019 ; Vol. 487, No. 4. pp. 4580-4591.

@article{83f19e3f2633404fbb23b62459b5d0ed,

title = "GASP - XVII. H I imaging of the jellyfish galaxy JO206: Gas stripping and enhanced star formation",

abstract = "We present VLA H I observations of JO206, a prototypical ram-pressure- stripped galaxy in the GASP sample. This massive galaxy (M* = 8.5 × 1010 M☉) is located at a redshift of z = 0.0513, near the centre of the low-mass galaxy cluster, IIZw108 (σ{\~ } 575 km s-1). JO206 is characterized by a long tail (≥90 kpc) of ionized gas stripped away by ram pressure. We find a similarly long H I tail in the same direction as the ionized gas tail and measure a total H I mass of 3.2 × 109 M☉. This is about half the expected H I mass given the stellar mass and surface density of JO206. A total of 1.8 × 109 M☉ (60 per cent) of the detected H I is in the gas-stripped tail. An analysis of the star formation rate shows that the galaxy is forming more stars compared to galaxies with the same stellar and H I mass. On average we find an H I gas depletion time of{\~ }0.5 Gyr which is about four times shorter than that of `normal' spiral galaxies. We performed a spatially resolved analysis of the relation between star formation rate density and gas density in the disc and tail of the galaxy at the resolution of our H I data. The star formation efficiency of the disc is about 10 times higher than that of the tail at fixed H I surface densities. Both the inner and outer parts of JO206 show an enhanced star formation compared to regions of similar H I surface density in field galaxies. The enhanced star formation is due to ram-pressure stripping during the galaxy's first infall into the cluster.",

keywords = "galaxies: clusters: intracluster medium, Astrophysics - Astrophysics of Galaxies, MORPHOLOGY-DENSITY RELATION, ARECIBO SDSS SURVEY, RAM-PRESSURE, IRREGULAR GALAXIES, SPIRAL GALAXIES, DISC GALAXIES, VIRGO CLUSTER, ATOMIC GAS, FORMATION EFFICIENCY, PHYSICAL-PROPERTIES",

author = "M. Ramatsoku and P. Serra and Poggianti, {B. M.} and A. Moretti and M. Gullieuszik and D. Bettoni and T. Deb and J. Fritz and {van Gorkom}, {J. H.} and Jaff{\'e}, {Y. L.} and S. Tonnesen and Verheijen, {M. A. W.} and B. Vulcani and B. Hugo and J{\'o}zsa, {G. I. G.} and Maccagni, {F. M.} and S. Makhathini and A. Ramaila and O. Smirnov and K. Thorat",

year = "2019",

month = aug,

doi = "10.1093/mnras/stz1609",

language = "English",

volume = "487",

pages = "4580--4591",

journal = "Monthly Notices of the Royal Astronomical Society",

issn = "0035-8711",

publisher = "Oxford University Press",

number = "4",

}

Ramatsoku, M, Serra, P, Poggianti, BM, Moretti, A, Gullieuszik, M, Bettoni, D, Deb, T, Fritz, J, van Gorkom, JH, Jaffé, YL, Tonnesen, S, Verheijen, MAW, Vulcani, B, Hugo, B, Józsa, GIG, Maccagni, FM, Makhathini, S, Ramaila, A, Smirnov, O & Thorat, K 2019, 'GASP - XVII. H I imaging of the jellyfish galaxy JO206: Gas stripping and enhanced star formation', Monthly Notices of the Royal Astronomical Society, vol. 487, no. 4, pp. 4580-4591. https://doi.org/10.1093/mnras/stz1609

GASP - XVII. H I imaging of the jellyfish galaxy JO206 : Gas stripping and enhanced star formation. / Ramatsoku, M.; Serra, P.; Poggianti, B. M.; Moretti, A.; Gullieuszik, M.; Bettoni, D.; Deb, T.; Fritz, J.; van Gorkom, J. H.; Jaffé, Y. L.; Tonnesen, S.; Verheijen, M. A. W.; Vulcani, B.; Hugo, B.; Józsa, G. I. G.; Maccagni, F. M.; Makhathini, S.; Ramaila, A.; Smirnov, O.; Thorat, K.

In: Monthly Notices of the Royal Astronomical Society, Vol. 487, No. 4, 08.2019, p. 4580-4591.

Research output: Contribution to journal › Article › Academic › peer-review

TY - JOUR

T1 - GASP - XVII. H I imaging of the jellyfish galaxy JO206

T2 - Gas stripping and enhanced star formation

AU - Ramatsoku, M.

AU - Serra, P.

AU - Poggianti, B. M.

AU - Moretti, A.

AU - Gullieuszik, M.

AU - Bettoni, D.

AU - Deb, T.

AU - Fritz, J.

AU - van Gorkom, J. H.

AU - Jaffé, Y. L.

AU - Tonnesen, S.

AU - Verheijen, M. A. W.

AU - Vulcani, B.

AU - Hugo, B.

AU - Józsa, G. I. G.

AU - Maccagni, F. M.

AU - Makhathini, S.

AU - Ramaila, A.

AU - Smirnov, O.

AU - Thorat, K.

PY - 2019/8

Y1 - 2019/8

N2 - We present VLA H I observations of JO206, a prototypical ram-pressure- stripped galaxy in the GASP sample. This massive galaxy (M* = 8.5 × 1010 M☉) is located at a redshift of z = 0.0513, near the centre of the low-mass galaxy cluster, IIZw108 (σ ̃ 575 km s-1). JO206 is characterized by a long tail (≥90 kpc) of ionized gas stripped away by ram pressure. We find a similarly long H I tail in the same direction as the ionized gas tail and measure a total H I mass of 3.2 × 109 M☉. This is about half the expected H I mass given the stellar mass and surface density of JO206. A total of 1.8 × 109 M☉ (60 per cent) of the detected H I is in the gas-stripped tail. An analysis of the star formation rate shows that the galaxy is forming more stars compared to galaxies with the same stellar and H I mass. On average we find an H I gas depletion time of ̃0.5 Gyr which is about four times shorter than that of `normal' spiral galaxies. We performed a spatially resolved analysis of the relation between star formation rate density and gas density in the disc and tail of the galaxy at the resolution of our H I data. The star formation efficiency of the disc is about 10 times higher than that of the tail at fixed H I surface densities. Both the inner and outer parts of JO206 show an enhanced star formation compared to regions of similar H I surface density in field galaxies. The enhanced star formation is due to ram-pressure stripping during the galaxy's first infall into the cluster.

AB - We present VLA H I observations of JO206, a prototypical ram-pressure- stripped galaxy in the GASP sample. This massive galaxy (M* = 8.5 × 1010 M☉) is located at a redshift of z = 0.0513, near the centre of the low-mass galaxy cluster, IIZw108 (σ ̃ 575 km s-1). JO206 is characterized by a long tail (≥90 kpc) of ionized gas stripped away by ram pressure. We find a similarly long H I tail in the same direction as the ionized gas tail and measure a total H I mass of 3.2 × 109 M☉. This is about half the expected H I mass given the stellar mass and surface density of JO206. A total of 1.8 × 109 M☉ (60 per cent) of the detected H I is in the gas-stripped tail. An analysis of the star formation rate shows that the galaxy is forming more stars compared to galaxies with the same stellar and H I mass. On average we find an H I gas depletion time of ̃0.5 Gyr which is about four times shorter than that of `normal' spiral galaxies. We performed a spatially resolved analysis of the relation between star formation rate density and gas density in the disc and tail of the galaxy at the resolution of our H I data. The star formation efficiency of the disc is about 10 times higher than that of the tail at fixed H I surface densities. Both the inner and outer parts of JO206 show an enhanced star formation compared to regions of similar H I surface density in field galaxies. The enhanced star formation is due to ram-pressure stripping during the galaxy's first infall into the cluster.

KW - galaxies: clusters: intracluster medium

KW - Astrophysics - Astrophysics of Galaxies

KW - MORPHOLOGY-DENSITY RELATION

KW - ARECIBO SDSS SURVEY

KW - RAM-PRESSURE

KW - IRREGULAR GALAXIES

KW - SPIRAL GALAXIES

KW - DISC GALAXIES

KW - VIRGO CLUSTER

KW - ATOMIC GAS

KW - FORMATION EFFICIENCY

KW - PHYSICAL-PROPERTIES

U2 - 10.1093/mnras/stz1609

DO - 10.1093/mnras/stz1609

M3 - Article

VL - 487

SP - 4580

EP - 4591

JO - Monthly Notices of the Royal Astronomical Society

JF - Monthly Notices of the Royal Astronomical Society

SN - 0035-8711

IS - 4

ER -