Gliese 514'smetallicity Fe/H index is largely unknown, with median values from -0.4 to +0.18 reported in the literature. This discrepancy is due to peculiarities of the stellar spectrum of Gliese 514.[citation needed] The spectrum peculiarities also affect the accuracy of the star's temperature measurement,[9] with reported values as low as 2901K.[7] The spectrum of Gliese 514 shows emission lines,[4] but the star itself has a lowstarspot activity.[11]
Multiplicity surveys did not detect any stellar companions as of 2020.[12]
The Sun is currently calculated to be passing through the tidal tail of Gliese 514'sOort cloud. Thus, futureinterstellar objects passing through the Solar System may originate from Gliese 514.[13]
The existence of a planet on a 15-day orbit around Gliese 514 was first suspected in 2019.[14] However, that planet was not confirmed. Instead, in 2022, oneSuper-Earth planet, namedGliese 514 b, was discovered on an eccentric 140-day orbit by theradial velocity method. The planetary orbit partially lies within the habitable zone of the parent star with planetary equilibrium temperature, averaged along orbit, equal to202±11 K.[8]
The infrared excess of the star also indicates the possible presence of a debris disk in the system, albeit at a low signal to noise ratio.[15]
^abBerger, D. H.; Gies, D. R.; McAlister, H. A.; Brummelaar, T. A. ten; Henry, T. J.; Sturmann, J.; Sturmann, L.; Turner, N. H.; Ridgway, S. T.; Aufdenberg, J. P.; Merand, A. (2006), "First Results from the CHARA Array. IV. The Interferometric Radii of Low-Mass Stars",The Astrophysical Journal,644 (1):475–483,arXiv:astro-ph/0602105,Bibcode:2006ApJ...644..475B,doi:10.1086/503318,S2CID14966363
^abGhosh, Samrat; Ghosh, Supriyo; Das, Ramkrishna; Mondal, Soumen; Khata, Dhrimadri (2020), "Understanding the physical properties of young M dwarfs: NIR spectroscopic studies",Monthly Notices of the Royal Astronomical Society,493 (3):4533–4550,arXiv:2002.05762,Bibcode:2020MNRAS.493.4533K,doi:10.1093/mnras/staa427
