HD 4113
Observation data Epoch J2000.0 Equinox J2000.0 | |
---|---|
Constellation | Sculptor |
HD 4113 A | |
Right ascension | 00h 43m 12.59559s[1] |
Declination | −37° 58′ 57.4777″[1] |
Apparent magnitude (V) | 7.880±0.013[2] |
HD 4113 B | |
Right ascension | 00h 43m 11.89423s[3] |
Declination | −37° 58′ 09.1687″[3] |
Apparent magnitude (V) | 12.70±0.02[2] |
Characteristics | |
Spectral type | G5V and M0–1V[2] |
B−V color index | 0.716±0.003[2] |
Astrometry | |
HD 4113 A | |
Radial velocity (Rv) | 5.05±0.12[1] km/s |
Proper motion (μ) | RA: 49.412±0.016 mas/yr[1] Dec.: −114.290±0.024 mas/yr[1] |
Parallax (π) | 23.8256 ± 0.0240 mas[1] |
Distance | 136.9 ± 0.1 ly (41.97 ± 0.04 pc) |
Absolute magnitude (MV) | 4.780±0.046[2] |
HD 4113 B | |
Radial velocity (Rv) | 4.44±0.39[3] km/s |
Proper motion (μ) | RA: 53.733±0.022 mas/yr[3] Dec.: −113.983±0.032 mas/yr[3] |
Parallax (π) | 23.9023 ± 0.0327 mas[3] |
Distance | 136.5 ± 0.2 ly (41.84 ± 0.06 pc) |
Absolute magnitude (MV) | 9.600±0.049[2] |
Orbit[4] | |
Companion | HD 4113 C |
Period (P) | 348.325 21.932 −15.139 yr |
Semi-major axis (a) | 50.438 2.060 −1.420 AU |
Eccentricity (e) | 0.648 0.008 −0.007 |
Inclination (i) | 83.456 2.342 −1.269° |
Longitude of the node (Ω) | 225.686 0.704 −1.486° |
Periastron epoch (T) | 2324305.035 127045.323 −7894.349 |
Argument of periastron (ω) (secondary) | 249.665 3.552 −4.805° |
Semi-amplitude (K1) (primary) | 0.263535 0.002058 −0.003037 km/s |
Details[5] | |
A | |
Mass | 1.02 0.02 −0.03 M☉ |
Radius | 1.08 0.02 −0.04[6] R☉ |
Luminosity | 1.085 0.04 −0.03[6] L☉ |
Surface gravity (log g) | 4.31±0.04 cgs |
Temperature | 5,638±50 K |
Metallicity [Fe/H] | 0.20±0.04 dex |
Rotational velocity (v sin i) | 2.324[2] km/s |
Age | 7.29 1.91 −1.46 or 5.0 1.3 −1.7[2] Gyr |
B | |
Mass | 0.55[2] M☉ |
Surface gravity (log g) | 4.76[2] cgs |
Temperature | 3,833[2] K |
C | |
Mass | 51.913 0.604 −0.458[4] MJup |
Other designations | |
Database references | |
SIMBAD | data |
Exoplanet Archive | data |
HD 4113 is a dual star system in the southern constellation of Sculptor. It is too faint to be viewed with the naked eye, having an apparent visual magnitude of 7.88.[2] The distance to this star, as estimated by parallax measurements, is 137 light years.[1] It is receding away from the Sun with a radial velocity of 5 km/s.[1]
The primary member of this system, component A, is a Sun-like G-type main-sequence star with a stellar classification of G5V.[2] Estimates of its age are five[2] to seven[5] billion years old, and it is spinning with a leisurely projected rotational velocity of 2.3 km/s.[2] The star is metal rich, with nearly the same mass,[5] radius, and luminosity[6] as the Sun.
Orbiting this star is a giant planet and a brown dwarf (HD 4113 C); the latter has been directly imaged. It also has a co-moving stellar companion, designated component B, which is a red dwarf with a class of M0–1V at an angular separation of 43″. This angle is equivalent to a projected separation of 2,000 AU.[2]
The most recent parameters for HD 4113 C as of 2022 come from a combination of data from radial velocity, astrometry, and imaging, showing that it is about 52 times the mass of Jupiter, and on an eccentric orbit with a semi-major axis of about 50.4 AU and an orbital period of about 348 years.[4]
Planetary system
[edit]On 26 October 2007, Tamuz et al. used the radial velocity method to find a planet with a minimum mass one and half times that of Jupiter orbiting at 1.28 AU away from HD 4113 A. The planet's orbit is highly eccentric.[8]
Companion (in order from star) |
Mass | Semimajor axis (AU) |
Orbital period (years) |
Eccentricity | Inclination | Radius |
---|---|---|---|---|---|---|
b | ≥1.703 0.040 −0.059 MJ |
1.280±0.004 | 1.442 0.0002 −0.0001 |
0.899 0.004 −0.003 |
— | — |
See also
[edit]References
[edit]- ^ a b c d e f g 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 d e f g h i j k l m n o p Cheetham, A.; et al. (June 2018). "Direct imaging of an ultracool substellar companion to the exoplanet host star HD 4113 A". Astronomy & Astrophysics. 614: 19. arXiv:1712.05217. Bibcode:2018A&A...614A..16C. doi:10.1051/0004-6361/201630136. S2CID 119084543. A16.
- ^ a b c d e 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 d Feng, Fabo; Butler, R. Paul; et al. (August 2022). "3D Selection of 167 Substellar Companions to Nearby Stars". The Astrophysical Journal Supplement Series. 262 (21): 21. arXiv:2208.12720. Bibcode:2022ApJS..262...21F. doi:10.3847/1538-4365/ac7e57. S2CID 251864022.
- ^ a b c Aguilera-Gómez, Claudia; et al. (June 2018). "Lithium abundance patterns of late-F stars: an in-depth analysis of the lithium desert". Astronomy & Astrophysics. 614: 15. arXiv:1803.05922. Bibcode:2018A&A...614A..55A. doi:10.1051/0004-6361/201732209. S2CID 62799777. A55.
- ^ a b c Brown, A. G. A.; et al. (Gaia collaboration) (August 2018). "Gaia Data Release 2: Summary of the contents and survey properties". Astronomy & Astrophysics. 616. A1. arXiv:1804.09365. Bibcode:2018A&A...616A...1G. doi:10.1051/0004-6361/201833051. Gaia DR2 record for this source at VizieR.
- ^ "HD 4113". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved 2019-11-04.
- ^ Tamuz, O.; et al. (2008). "The CORALIE survey for southern extra-solar planets XV. Discovery of two eccentric planets orbiting HD 4113 and HD 156846". Astronomy and Astrophysics. 480 (3): L33–L36. arXiv:0710.5028. Bibcode:2008A&A...480L..33T. doi:10.1051/0004-6361:20078737. S2CID 11350536.
External links
[edit]- "Notes for star HD 4113". Extrasolar Planets Encyclopaedia. Archived from the original on November 6, 2007. Retrieved 2008-08-24.