SIMBAD references

1999AJ....118..162H - Astron. J., 118, 162-185 (1999/July-0)

A 180 kiloparsec tidal tail in the luminous infrared merger Arp 299.


Abstract (from CDS):

We present VLA H I observations and University of Hawaii 88 inch (2.2 m) deep optical B- and R-band observations of the IR-luminous merger Arp 299 (=NGC 3690+IC 694). These data reveal a gas-rich (MHI=3.3x109 M) optically faint (µB≳27 mag.arcsec–2, µ_R_≳26 mag.arcsec–2) tidal tail with a length of over 180 kpc. The size of this tidal feature necessitates an old interaction age for the merger (≳750 Myr since first periapse), which is currently experiencing a very young starburst (≲20 Myr). The observations reveal a most remarkable structure within the tidal tail: it appears to be composed of two parallel filaments separated by approximately 20 kpc. One of the filaments is gas-rich with little if any starlight, while the other is gas-poor. We believe that this bifurcation results from a warped disk in one of the progenitors. The quantities and kinematics of the tidal H I suggest that Arp 299 results from the collision of a retrograde Sab-Sb galaxy (IC 694) and a prograde Sbc-Sc galaxy (NGC 3690) that occurred 750 Myr ago and will merge into a single object in roughly 60 Myr. We suggest that the present IR-luminous phase in this system is due in part to the retrograde spin of IC 694. Finally, we discuss the apparent lack of tidal dwarf galaxies within the tail.

Abstract Copyright:

Journal keyword(s): Galaxies: Evolution - Galaxies: Individual: NGC Number: NGC 3690 - galaxies: individual (IC 694, Arp 299) - Galaxies: Interactions - Galaxies: ISM - Galaxies: Kinematics and Dynamics - Galaxies: Peculiar - Galaxies: Starburst - Infrared Radiation

CDS comments: Table 3: Companion not identified at the given positions.

Simbad objects: 40

goto Full paper

goto View the reference in ADS

To bookmark this query, right click on this link: simbad:1999AJ....118..162H and select 'bookmark this link' or equivalent in the popup menu


© Université de Strasbourg/CNRS

    • Contact