Astrophysics Barred CO emission in HE 1029 - 1831
نویسندگان
چکیده
We present CO(1–0) and CO(2–1) line emission maps of the barred spiral active galaxy HE 1029-1831 (z = 0.0403) obtained with the IRAM Plateau de Bure Interferometer (PdBI) and in part by the Berkeley-Illinois-Maryland Association (BIMA) observatory. The CO emission is well associated with the optical bar and extended along it. The FWHM of the CO emission is estimated to be ∼(6 ± 2) kpc. The CO emission shows a strong velocity gradient along the minor axis of the bar (PA = 90◦). The molecular gas mass is estimated to be ∼1.2 × 1010M which indicates a very gas rich host galaxy. Most of the molecular gas appears to be subthermally excited and cold but we also find weak evidence for a warmer and/or denser gas component at the southern part of the bar emission, about ∼4 kpc from the galactic nucleus.
منابع مشابه
Barred CO emission in HE 1029 - 1831
We present CO(1–0) and CO(2–1) line emission maps of the barred spiral active galaxy HE 1029-1831 (z=0.0403) obtained with the IRAM Plateau de Bure Interferometer (PdBI) and in part by the Berkeley-Illinois-Maryland Association (BIMA) observatory. The CO emission is well associated with the optical bar and extended along it. The FWHM of the CO emission is estimated to be ∼(6±2) kpc. The CO emis...
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