HD 164595 b

From Wikipedia, the free encyclopedia
Jump to navigation Jump to search

HD 164595 b
Discovery
Discovered byCourcol et al.
Discovery date10 September 2015
Radial velocity
Orbital characteristics
0.23 AU (34,000,000 km)[1]
Eccentricity0.0880+0.1200
−0.0660
[1]
40.00±0.24[1] d
StarHD 164595
Physical characteristics
Mass16.14±2.72[1] M

HD 164595 b is a confirmed exoplanet orbiting around a Sun-like star HD 164595 every 40 days some 94.36 light-years away. It was detected with the radial velocity technique with the SOPHIE echelle spectrograph. The planet has a minimal mass equivalent of 16 Earths.[1][2]

It is believed to be a Neptune-like gassy planet incapable of supporting life.[3][4] The planet has a minimal mass of 16 Earth masses.[1]

Possible radio signal from star system[edit]

A recent (2016) radio signal at 11 GHz (2.7 cm wavelength) has been observed from the HD 164595 stellar system.[5][6] It is unknown which planet of that stellar system is involved, if any. It could instead be gravitational lensing from a more distant source.[6] SETI investigators are looking into it,[6][7][8] but the chances of the signal being from an extraterrestrial civilization are considered slim, at best,"[3] with SETI researcher Eric Korpela calling it "uninteresting"[9].

References[edit]

  1. ^ a b c d e f "HD 164595 b Confirmed Planet Overview Page". NASA. Retrieved 31 August 2016.
  2. ^ Courcol, B.; Bouchy, F.; Pepe, F.; Santerne, A.; Delfosse, X.; Arnold, L.; Astudillo-Defru, N.; Boisse, I.; Bonfils, X. (2015-09-01). "The SOPHIE search for northern extrasolar planets". Astronomy & Astrophysics. 581. arXiv:1506.07144. Bibcode:2015A&A...581A..38C. doi:10.1051/0004-6361/201526329. ISSN 0004-6361.
  3. ^ a b Plait, Phil (31 August 2016). "No, We Almost Certainly Did Not Detect an Alien Signal".
  4. ^ Moody, Oliver (31 August 2016). "PAYWALL - Title => Signal from the stars could be ET phoning Earth". The Times. Retrieved 31 August 2016.
  5. ^ Gilster, Paul (27 August 2016). "An Interesting SETI Candidate in Hercules". Centauri Dreams. Retrieved 29 August 2016.
  6. ^ a b c Griffiths, James (30 August 2016). "Hear me now? 'Strong signal' from sun-like star sparks alien speculation". CNN. Retrieved 30 August 2016.
  7. ^ SETI observations on the RATAN-600 telescope in 2015 and detection of a strong signal in the direction of HD 164595 Bursov N., Filippova L., Filippov V., Gindilis L., Maccone C. et al. 2016 | in " IAA SETI Permanent Committee", Guadalajara, Mexico.
  8. ^ Staff (29 August 2016). "Mystery radio signal may be from distant star system — or a military transmitter". KurzweilAI. Retrieved 31 August 2016.
  9. ^ Korpela, Eric (29 August 2016). "Uninteresting from a SETI point of view".