SIMBAD references

2015ApJ...803....1N - Astrophys. J., 803, 1 (2015/April-2)

Three red giants with substellar-mass companions.

NIEDZIELSKI A., WOLSZCZAN A., NOWAK G., ADAMOW M., KOWALIK K., MACIEJEWSKI G., DEKA-SZYMANKIEWICZ B. and ADAMCZYK M.

Abstract (from CDS):

We present three giant stars from the ongoing Penn State-Torun Planet Search with the Hobby-Eberly Telescope, which exhibit radial velocity (RV) variations that point to the presence of planetary-mass companions around them. BD +49 828 is a M = 1.52 ± 0.22M K0 giant with a m sin i = 1.6 –0.2+0.4 minimum mass companion in a = 4.2+0.32–0.2 AU (2590+300–180d), e = 0.35+0.24–0.10orbit. HD 95127, a = 4.2 –0.2+0.32AU (2590–180+300d), e = 0.35–0.10+0.24robit, HD 95127, a log L/L = 2.28 ± 0.38, R = 20 ± 9 R, M = 1.20 ± 0.22 M K0 giant, has a m sin i = 5.01–0.44+0.61 MJ minimum mass companion in a = 1.28+0.01–0.01AU (482+5–5d), e = 0.11+0.15–0.06orbit. Finally, HD 216536 is a M = 1.36 ± 0.38 M K0 giant with a m sin i = 1.47–0.12+0.20MJ minimum mass companion in a = 0.609 –0.002+0.002 AU (148.6 –0.7+0.7d), e = 0.38+0.12–0.10orbit. Both HD 95127 b and HD 216536 b in their compact orbits are very close to the engulfment zone and hence prone to ingestion in the near future. BD+49 828 b is among the longest-period planets detected with the RV technique until now and it will remain unaffected by stellar evolution up to a very late stage of its host. We discuss general properties of planetary systems around evolved stars and planet survivability using existing data on exoplanets in more detail.

Abstract Copyright:

Journal keyword(s): planetary systems - stars: individual: (BD+49 828 b, HD 95127 b, HD 216536 b)

Simbad objects: 31

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2022.09.27-01:11:08

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