MOLECULAR GAS ALONG A BRIGHT Hα FILAMENT IN 2A 0335+096 REVEALED BY ALMA

• Published in: The Astrophysical journal 2016-12, Vol.832 (2), p.148
• Main Authors: Vantyghem, A. N., McNamara, B. R., Russell, H. R., Hogan, M. T., Edge, A. C., Nulsen, P. E. J., Fabian, A. C., Combes, F., Salomé, P., Baum, S. A., Donahue, M., Main, R. A., Murray, N. W., O’Connell, R. W., O’Dea, C. P., Oonk, J. B. R., Parrish, I. J, Sanders, J. S., Tremblay, G., Voit, G. M.
• Format: Article
• Language: English
• Subjects: Astrophysics; ASTROPHYSICS, COSMOLOGY AND ASTRONOMY; CARBON; CARBON MONOXIDE; CLOUDS; Clumps; Cold gas; EMISSION; Emission lines; ENTROPY; FILAMENTS; Galactic clusters; GALAXIES; GALAXY CLUSTERS; GALAXY NUCLEI; KEV RANGE; MASS; Molecular gases; NEBULAE; Outflow; Physics; RED SHIFT; SOFT X RADIATION; Soft x rays
• ISSN: 0004-637X; 1538-4357
• DOI: 10.3847/0004-637X/832/2/148

We present ALMA CO(1–0) and CO(3–2) observations of the brightest cluster galaxy (BCG) in the 2A 0335+096 galaxy cluster ( z  = 0.0346). The total molecular gas mass of 1.13 ± 0.15 × 10 9 M ⊙ is divided into two components: a nuclear region and a 7 kpc long dusty filament. The central molecular gas component accounts for 3.2 ± 0.4 × 10 8 M ⊙ of the total supply of cold gas. Instead of forming a rotationally supported ring or disk, it is composed of two distinct, blueshifted clumps south of the nucleus and a series of low-significance redshifted clumps extending toward a nearby companion galaxy. The velocity of the redshifted clouds increases with radius to a value consistent with the companion galaxy, suggesting that an interaction between these galaxies