H-band spectrum of CVSO 30 c (lower left) compared to several known planetary candidates and background objects (subplots A, D, E). The triangular shape of the H-band (A), with red linear fits guiding the eye, indicates that it is not a background galaxy, but a sub-stellar companion. Beta Pic b has approximately the same luminosity and temperature (Chilcote et al. 2015) but a different surface gravity, hence about twice the mass of CVSO 30 c. As shown (C), the Drift-Phoenix models indicate that the H-band becomes less steep with temperature. This means that CVSO 30 c is even slightly lower in temperature than β Pic b. In the upper left panel another candidate is shown, detected at 4.3′′ from the A1 star HD 35367, which is about 0.5 mag brighter in the K-band than CVSO 30 c, but is obviously located in the background. In addition, the H-band (D) and K-band (E) of CT Cha b and 2M 0441 Bb, the best-fitting comparison objects, are given in K-band. These two and CVSO 30 c are given in (D, E) with identical offsets in H-band and K-band. Additionally, the best-fitting giants and a sample of late-type dwarfs is shown for comparison. References and individual reduced comparison values are given in Table 6. Low-resolution spectra of free-floating planetary candidates are not shown, but can be found in Martín et al. (2001).
Current usage metrics show cumulative count of Article Views (full-text article views including HTML views, PDF and ePub downloads, according to the available data) and Abstracts Views on Vision4Press platform.
Data correspond to usage on the plateform after 2015. The current usage metrics is available 48-96 hours after online publication and is updated daily on week days.
Initial download of the metrics may take a while.