Gliese 588
  Gliese 588 Location of Gliese 588 in the constellation Lupus | |
| Observation data Epoch J2000 Equinox J2000 | |
|---|---|
| Constellation | Lupus |
| Right ascension | 15h 32m 12.93231s[1] |
| Declination | −41° 16′ 32.1304″[1] |
| Apparent magnitude (V) | 9.311[2] |
| Characteristics | |
| Spectral type | M2.5V[2] |
| U−B color index | +1.14[3] |
| B−V color index | +1.51[3] |
| Astrometry | |
| Radial velocity (Rv) | 21.06±0.12[1] km/s |
| Proper motion (μ) | RA: -1176.447 mas/yr[1] Dec.: -1030.970 mas/yr[1] |
| Parallax (π) | 168.9965 ± 0.0270 mas[1] |
| Distance | 19.300 ± 0.003 ly (5.9173 ± 0.0009 pc) |
| Absolute magnitude (MV) | 10.44[4] |
| Details[5] | |
| Mass | 0.43±0.05 M☉ |
| Radius | 0.42±0.03 R☉ |
| Surface gravity (log g) | 4.82±0.08 cgs |
| Temperature | 3555±41 K |
| Metallicity [Fe/H] | 0.06±0.08 dex |
| Rotation | 61.3±6.5 d[6] |
| Other designations | |
| Database references | |
| SIMBAD | data |
Gliese 588 is a nearby red dwarf star of spectral type M2.5, located in the constellation Lupus at 19.30 light-years from Earth.[1] It emits a very stable light flux, with no detectable pulsations.[5]
History of observations
[edit]According to Luyten's (1979) (catalogue LHS, as well as NLTT), this object was discovered by Innes.[7][8] In 1903–1927 Innes was the director of the Union Observatory (UO), South Africa.
However, in the Ci 20 catalogue (see number 934) this star was designated as "CD -40 7021", not "UO".[9] This may indicate that GJ 588 was first catalogued earlier, in the Cordoba Durchmusterung by John M. Thome in 1894.[10][11] Note: the real CD designation of Gliese 588 is "CD-40 9712",[12] not "CD -40 7021":[9] GJ 588 has a RA of 15 hours, but the real CD -40 7021 has a RA of 11 hours.[13][10]
Search for planets
[edit]In 2019, two planet candidates detected by radial velocity around Gliese 588 were reported in a preprint, among 118 planets around M dwarf stars. These would have minimum masses about 2.4 and 10.3 times that of Earth, and orbit with periods of 5.8 and 206 days.[14] A 2024 study did not find evidence for planets around this star; radial velocity signals with different periods were detected and attributed to intrinstic stellar variability.[15]
| Companion (in order from star) |
Mass | Semimajor axis (AU) |
Orbital period (days) |
Eccentricity | Inclination | Radius |
|---|---|---|---|---|---|---|
| b (unconfirmed) | ≥2.4+1.0 −0.9 M🜨 |
0.049±0.005 | 5.8084+0.0016 −0.0018 |
0.04+0.25 −0.04 |
— | — |
| c (unconfirmed) | ≥10.3+6.9 −4.9 M🜨 |
0.530+0.048 −0.054 |
206.0+2.0 −3.3 |
0.06+0.02 −0.06 |
— | — |
References
[edit]- ^ a b c d e f Vallenari, A.; et al. (Gaia collaboration) (2023). "Gaia Data Release 3. Summary of the content and survey properties". Astronomy and Astrophysics. 674: A1. arXiv:2208.00211. Bibcode:2023A&A...674A...1G. doi:10.1051/0004-6361/202243940. S2CID 244398875. Gaia DR3 record for this source at VizieR.
- ^ a b c "GJ 588". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved 25 December 2016.
- ^ a b Mermilliod, J.-C. (1986). "Compilation of Eggen's UBV data, transformed to UBV (unpublished)". Catalogue of Eggen's UBV Data. Bibcode:1986EgUBV........0M.
- ^ "The One Hundred Nearest Star Systems". 2012. Archived from the original on 26 March 2012. Retrieved 25 December 2016.
- ^ a b Berdiñas, Z. M.; Rodríguez-López, C.; Amado, P. J.; Anglada-Escudé, G.; Barnes, J. R.; MacDonald, J.; Zechmeister, M.; Sarmiento, L. F. (2017), "High-cadence spectroscopy of M-dwarfs – II. Searching for stellar pulsations with HARPS", Monthly Notices of the Royal Astronomical Society, 469 (4): 4268–4282, arXiv:1705.04690, doi:10.1093/mnras/stx1140
- ^ Suárez Mascareño, A.; Rebolo, R.; González Hernández, J. I.; Esposito, M. (2015), "Rotation periods of late-type dwarf stars from time series high-resolution spectroscopy of chromospheric indicators", Monthly Notices of the Royal Astronomical Society, 452 (3): 2745–2756, arXiv:1506.08039, Bibcode:2015MNRAS.452.2745S, doi:10.1093/mnras/stv1441
- ^ Luyten, Willem Jacob (1979). "LHS 397". LHS Catalogue, 2nd Edition. Archived from the original on 4 March 2016. Retrieved 15 October 2015.
- ^ Kirkpatrick, J. Davy; Gelino, Christopher R.; Cushing, Michael C.; Mace, Gregory N.; Griffith, Roger L.; Skrutskie, Michael F.; Marsh, Kenneth A.; Wright, Edward L.; Eisenhardt, Peter R.; McLean, Ian S.; Mainzer, Amy K.; Burgasser, Adam J.; Tinney, Chris G.; Parker, Stephen; Salter, Graeme (2012). "Further Defining Spectral Type "Y" and Exploring the Low-mass End of the Field Brown Dwarf Mass Function". The Astrophysical Journal. 753 (2): 156. arXiv:1205.2122. Bibcode:2012ApJ...753..156K. doi:10.1088/0004-637X/753/2/156. S2CID 119279752.
- ^ a b Porter, J. G.; Yowell, E. J.; Smith, E. S. (1930). "A catalogue of 1474 stars with proper motion exceeding four-tenths year". Publications of the Cincinnati Observatory. 20: 1–32. Bibcode:1930PCinO..20....1P. Page 21 (Ci 20 934). Archived 20 January 2015 at the Wayback Machine
- ^ a b Thome, J. M. (1894). "Cordoba Durchmusterung declination -32 to -42". Resultados del Observatorio Nacional Argentino. 17: 1–538. Bibcode:1894RNAO...17....1T. Page 468 (CD -40 9712) Archived 20 January 2015 at the Wayback Machine; page 459 (CD -40 7021) Archived 20 January 2015 at the Wayback Machine
- ^ Dictionary of Nomenclature of Celestial Objects. CD entry Archived 25 September 2015 at the Wayback Machine. SIMBAD. Centre de Données astronomiques de Strasbourg.
- ^ Luyten, Willem Jacob (1979). "NLTT 40449". NLTT Catalogue. Archived from the original on 4 March 2016. Retrieved 15 October 2015.
- ^ Thome, John Macon (1892–1932). "CD -40 7021". Cordoba Durchmusterung. Archived from the original on 4 March 2016. Retrieved 15 October 2015.
- ^ a b Barnes, J. R.; Kiraga, M.; Diaz, M.; Berdiñas, Z.; Jenkins, J. S.; Keiser, S.; Thompson, I.; Crane, J. D.; Shectman, S. A. (11 June 2019). "Frequency of planets orbiting M dwarfs in the Solar neighbourhood". arXiv:1906.04644 [astro-ph.EP].
- ^ Mignon, L.; Delfosse, X.; et al. (September 2024). "Radial velocity homogeneous analysis of M dwarfs observed with HARPS". Astronomy & Astrophysics. 689: A32. doi:10.1051/0004-6361/202346570.
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