SIMBAD references

We present a multi-wavelength study of the unusual galaxy ISOSS J 15079+7247. With a bolometric luminosity of L_FIR∼2x10¹²L_☉ this object is one of the most luminous galaxies detected by the 170µm ISOPHOT Serendipity Survey (ISOSS). We have obtained 1.2mm continuum and CO (1-0) line observations, optical spectra and deep R-band images of the system. The CO emission originates from a giant elliptical galaxy at redshift z=0.2136, yielding a molecular gas mass of 2.9x10¹⁰M_☉. The high gas mass favors the picture that the dust emission is associated with the elliptical galaxy. The nature of the ultraluminous IR emission can be explained by an opaque, hidden starburst in the center of the elliptical. The huge dust mass of 5x10⁸M_☉ corresponds to a visual extinction of A_V∼1000mag. This is consistent with the non-detection of any optical signatures of a strong starburst in ISOSS J 15079+7247 and the strength of non-thermal radio continuum emission.