NASA/IPAC EXTRAGALACTIC DATABASE
Date and Time of the Query: 2019-06-19 T10:41:27 PDT
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For refcode 2003A&A...406..427V:
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Copyright by European Southern Observatory (ESO). Reproduced by permission
2003A&A...406..427V Atomic gas far away from the Virgo cluster core galaxy NGC 4388. A possible link to isolated star formation in the Virgo cluster? Vollmer, B.; Huchtmeier, W. Abstract. We have discovered 6x 10^7^ M_sun_ of atomic gas at a projected distance greater than 4' (20 kpc) from the highly inclined Virgo spiral galaxy NGC 4388. This gas is most probably connected to the very extended Halpha plume detected by Yoshida et al.. Its mass makes a nuclear outflow and its radial velocity a minor merger as the origin of the atomic and ionized gas very unlikely. A numerical ram pressure simulation can account for the observed HI spectrum and the morphology of the Halpha plume. An additional outflow mechanism is still needed to reproduce the velocity field of the inner Halpha plume. The extraplanar compact HII region recently found by Gerhard et al. can be explained as a stripped gas cloud that collapsed and decoupled from the ram pressure wind due to its increased surface density. The star-forming cloud is now falling back onto the galaxy. Keywords: galaxies: individual: NGC 4388, galaxies: interactions, galaxies: ISM, galaxies: kinematics and dynamics
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