Please use this identifier to cite or link to this item: http://hdl.handle.net/2248/7868
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dc.contributor.authorHota, Ananda-
dc.contributor.authorDevaraj, A-
dc.contributor.authorPradhan, A. C-
dc.contributor.authorStalin, C. S-
dc.contributor.authorGeorge, Koshy-
dc.contributor.authorMohapatra, Abhisek-
dc.contributor.authorRey, Soo-Chang-
dc.contributor.authorOhyama, Youichi-
dc.contributor.authorVaddi, Sravani-
dc.contributor.authorPechetti, Renuka-
dc.contributor.authorRamya, S-
dc.contributor.authorJose, Jessy-
dc.contributor.authorRoy, Jayashree-
dc.contributor.authorKonar, Chiranjib-
dc.date.accessioned2021-10-18T06:19:36Z-
dc.date.available2021-10-18T06:19:36Z-
dc.date.issued2021-10-
dc.identifier.citationJournal of Astrophysics and Astronomy, Vol. 42, No. 2, 86en_US
dc.identifier.issn0973-7758-
dc.identifier.urihttp://hdl.handle.net/2248/7868-
dc.descriptionRestricted Accessen_US
dc.descriptionThe original publication is available at springerlink.com-
dc.description.abstractWe present the far ultraviolet (FUV) imaging of the nearest Jellyfish or Fireball galaxy IC3418/VCC 1217, in the Virgo cluster of galaxies, using Ultraviolet Imaging Telescope (UVIT) onboard the AstroSat satellite. The young star formation observed here in the 17 kpc long turbulent wake of IC3418, due to ram pressure stripping of cold gas surrounded by hot intra-cluster medium, is a unique laboratory that is unavailable in the Milky Way. We have tried to resolve star forming clumps, seen compact to GALEX UV images, using better resolution available with the UVIT and incorporated UV-optical images from Hubble Space Telescope archive. For the first time, we resolve the compact star forming clumps (fireballs) into sub-clumps and subsequently into a possibly dozen isolated stars. We speculate that many of them could be blue supergiant stars which are cousins of SDSS J122952.66+112227.8, the farthest star (~17 Mpc) we had found earlier surrounding one of these compact clumps. We found evidence of star formation rate (4–7.4 × 10–4M☉ yr–1) in these fireballs, estimated from UVIT flux densities, to be increasing with the distance from the parent galaxy. We propose a new dynamical model in which the stripped gas may be developing vortex street where the vortices grow to compact star forming clumps due to self-gravity. Gravity winning over turbulent force with time or length along the trail can explain the puzzling trend of higher star formation rate and bluer/younger stars observed in fireballs farther away from the parent galaxy.en_US
dc.language.isoenen_US
dc.publisherIndian Academy of Sciencesen_US
dc.relation.urihttps://doi.org/10.1007/s12036-021-09764-w-
dc.rights© Indian Academy of Sciences-
dc.subjectGalaxies: star formationen_US
dc.subjectGalaxies: formationen_US
dc.subjectGalaxies: evolutionen_US
dc.subjectGalaxies: IC3418en_US
dc.subjectUltraviolet: galaxiesen_US
dc.titleThe sharpest ultraviolet view of the star formation in an extreme environment of the nearest Jellyfish Galaxy IC 3418en_US
dc.typeArticleen_US
Appears in Collections:IIAP Publications



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