The COMPLETE Survey of Star-Forming regions offers an unusually comprehensive and diverse set of measurements of the distribution and temperature of dust and gas in molecular clouds, and in this paper we use those data to find new calibrations of the “X-factor” and the 13CO abundance within Perseus. To carry out our analysis, we: 1) apply the NICER (Near-Infrared Color Excess Method Revisited) ...

The high-resolution (R 1⁄4 25; 000) infrared M-band spectrum of the massive protostar NGC 7538 IRS 9 shows a narrow absorption feature at 4.779 lm (2092.3 cm 1) that we attribute to the vibrational stretching mode of the 13CO isotope in pure CO icy grain mantles. This is the first detection of 13CO in icy grain mantles in the interstellar medium. The 13CO band is a factor of 2.3 narrower than t...

We have modelled radio and far-infrared rotational lines of 12CO and 13CO obtained from the circumstellar envelope of the infrared-bright carbon star IRAS 15194-5115. Eleven rotational lines between J=1–0 and 21–20 and nine rotational lines between J=1–0 and 22–21 in the ground vibrational states of 12CO and 13CO, respectively, provide the observational constraints. A model of the circumstellar...

The Mopra 22-m and SEST 15-m telescopes have been used to detect and partially map a region of 12CO(1-0) line emission within the Magellanic Bridge, a region lying between the Large and Small Magellanic Clouds (LMC and SMC, respectively). The emission appears to be embedded in a cloud of neutral hydrogen, and is in the vicinity of an IRAS source. The CO emission region is found to have a 60 μm/...

We report the redshift of an unlensed, highly obscured submillimetre galaxy (SMG), HS1700.850.1, the brightest SMG (S850μm = 19.1 mJy) detected in the James Clerk Maxwell Telescope/Submillimetre Common-user Bolometer Array-2 (JCMT/SCUBA-2) Baryonic Structure Survey, based on the detection of its 12CO line emission. Using the Institute Radio Astronomie Millimetrique Plateau de Bure Interferomete...

Asteroid 3200 Phaethon resembles a comet in some ways, including a highly-eccentric orbit (e∼ 0.89) and a strong associated meteor shower (the Geminids). Yet this object has never been observed to exhibit any cometary activity, i.e., gas production. We observed 3200 Phaethon with the Caltech Submillimeter Observatory on two occasions, once while it was near its closest approach to Earth as it n...

Aims. We present observations of the Orion Bar photodissociation region (PDR) obtained with the SPIRE instrument on-board Herschel. Methods. We obtained SPIRE Fourier-transform spectrometer (FTS) sparse sampled maps of the Orion bar. Results. The FTS wavelength coverage and sensitivity allow us to detect a wealth of rotational lines of CO (and its isotopologues), fine structure lines of C and N...

Aims. We present observations of the Orion Bar photodissociation region (PDR) obtained with the SPIRE instrument on-board Herschel. Methods. We obtained SPIRE Fourier-transform spectrometer (FTS) sparse sampled maps of the Orion bar. Results. The FTS wavelength coverage and sensitivity allow us to detect a wealth of rotational lines of CO (and its isotopologues), fine structure lines of C and N...

We present near-IR imaging and spectroscopy, together with sub-mm/mm photometry and 12CO molecular line maps of the cometary nebula PP 13S. Previous models have been unable to resolve whether PP 13S is a young, pre-main sequence star or an old, evolved object. Our new observations prove conclusively that PP 13S is a young stellar object with a luminosity of ∼30 L and an accretion disk with an i...