Highlight: The highest resolution near infrared spectrum of the imaged planetary mass companion 2M1207b (vol.518)
- Published on 10 August 2010
The highest resolution near infrared spectrum of the imaged planetary mass companion 2M1207b
2M107b is the first planetary mass companion discovered by direct imaging. Patience et al. have used archive data from observations with SINFONI on the VLT to infer what is now the highest resolution and largest wavelength coverage spectrum of the object (from 1.1 to 2.45 microns). The study confirms that 2M107b has a Teff~1600K and that it is significantly less luminous than predicted for a substellar object of that effective temperature at that distance. The favored explanation for this discrepancy is the extinction from a disk with large grains.