GASP XXIII: A Jellyfish Galaxy as an Astrophysical Laboratory of the Baryonic Cycle
Por:
Poggianti, Bianca M., Ignesti, Alessandro, Gitti, Myriam, Wolter, Anna, Brighenti, Fabrizio, Biviano, Andrea, George, Koshy, Vulcani, Benedetta, Gullieuszik, Marco, Moretti, Alessia, Paladino, Rosita, Bettoni, Daniela, Franchetto, Andrea, Jaffe, Yara L., Radovich, Mario, Roediger, Elke, Tomicic, Neven, Tonnesen, Stephanie, Bellhouse, Callum, Fritz, Jacopo, Omizzolo, Alessandro
Publicada:
20 dic 2019
Resumen:
With MUSE, Chandra, VLA, ALMA, and UVIT data from the GASP program, we
study the multiphase baryonic components in a jellyfish galaxy (JW100)
with a stellar mass 3.2 x 10(11) M-circle dot hosting an active galactic
nucleus (AGN). We present its spectacular extraplanar tails of ionized
and molecular gas, UV stellar light, and X-ray and radio continuum
emission. This galaxy represents an excellent laboratory to study the
interplay between different gas phases and star formation and the
influence of gas stripping, gas heating, and AGNs. We analyze the
physical origin of the emission at different wavelengths in the tail, in
particular in situ star formation (related to H alpha, CO, and UV
emission), synchrotron emission from relativistic electrons (producing
the radio continuum), and heating of the stripped interstellar medium
(ISM; responsible for the X-ray emission). We show the similarities and
differences of the spatial distributions of ionized gas, molecular gas,
and UV light and argue that the mismatch on small scales (1 kpc) is due
to different stages of the star formation process. We present the
relation H alpha-X-ray surface brightness, which is steeper for
star-forming regions than for diffuse ionized gas regions with a high
[O I]/H alpha ratio. We propose that ISM heating due to interaction
with the intracluster medium (either for mixing, thermal conduction, or
shocks) is responsible for the X-ray tail, observed [O I] excess, and
lack of star formation in the northern part of the tail. We also report
the tentative discovery in the tail of the most distant (and among the
brightest) currently known ULX, a pointlike ultraluminous X-ray source
commonly originating in a binary stellar system powered by either an
intermediate-mass black hole or a magnetized neutron star.
Filiaciones:
Poggianti, Bianca M.:
INAF Padova Astron Observ, Vicolo Osservatorio 5, I-35122 Padua, Italy
Ignesti, Alessandro:
Univ Bologna, Dipartimento Fis Astron, Via Gobetti 93 2, I-40129 Bologna, Italy
Ist Radioastron Bologna, INAF, Via Gobetti 101, I-40129 Bologna, Italy
Gitti, Myriam:
Univ Bologna, Dipartimento Fis Astron, Via Gobetti 93 2, I-40129 Bologna, Italy
Ist Radioastron Bologna, INAF, Via Gobetti 101, I-40129 Bologna, Italy
Wolter, Anna:
INAF Brera Astron Observ, Via Brera 28, I-20121 Milan, Italy
Brighenti, Fabrizio:
Univ Bologna, Dipartimento Fis Astron, Via Gobetti 93 2, I-40129 Bologna, Italy
Ist Radioastron Bologna, INAF, Via Gobetti 101, I-40129 Bologna, Italy
Biviano, Andrea:
Astron Observ Trieste, INAF, Via Tiepolo 11, I-34131 Trieste, Italy
George, Koshy:
Ludwig Maximilians Univ Munchen, Fac Phys, Scheinerstr 1, D-81679 Munich, Germany
Christ Univ, Dept Phys, Hosur Rd, Bangalore 560029, Karnataka, India
Indian Inst Astrophys, Koramangala II Block, Bangalore, Karnataka, India
Vulcani, Benedetta:
INAF Padova Astron Observ, Vicolo Osservatorio 5, I-35122 Padua, Italy
Gullieuszik, Marco:
INAF Padova Astron Observ, Vicolo Osservatorio 5, I-35122 Padua, Italy
Moretti, Alessia:
INAF Padova Astron Observ, Vicolo Osservatorio 5, I-35122 Padua, Italy
Paladino, Rosita:
INAF Ist Radioastron, Via P Gobetti 101, I-40129 Bologna, Italy
Franchetto, Andrea:
INAF Padova Astron Observ, Vicolo Osservatorio 5, I-35122 Padua, Italy
Dipartimento Fis Astron, Vicolo Osservatorio 5, I-35136 Padua, Italy
Jaffe, Yara L.:
Univ Valparaiso, Inst Fis & Astron, Avda Gran Bretana, Valparaiso 1111, Chile
Radovich, Mario:
INAF Padova Astron Observ, Vicolo Osservatorio 5, I-35122 Padua, Italy
Roediger, Elke:
Univ Hull, Dept Math & Phys, Milne Ctr Astrophys, Kingston Upon Hull HU6 7RX, N Humberside, England
Tomicic, Neven:
INAF Padova Astron Observ, Vicolo Osservatorio 5, I-35122 Padua, Italy
Tonnesen, Stephanie:
Flatiron Inst, CCA, 162 5th Ave, New York, NY 10010 USA
Bellhouse, Callum:
Univ Birmingham, Sch Phys & Astron, Birmingham, W Midlands, England
Fritz, Jacopo:
UNAM, Inst Radioastron Astrofis, Campus Morelia,AP 3-72, Morelia, Mexico
Omizzolo, Alessandro:
INAF Padova Astron Observ, Vicolo Osservatorio 5, I-35122 Padua, Italy
Vatican Observ, Vatican City, Vatican
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