HD 180134
![]() ![]() | |
Observation data Epoch J2000.0 Equinox J2000.0 (ICRS) | |
---|---|
Constellation | Telescopium |
Right ascension | 19h 18m 09.78130s[1] |
Declination | −53° 23′ 13.5119″[1] |
Apparent magnitude (V) | 6.36±0.01[2] |
Characteristics | |
Spectral type | F7 V[3] |
B−V color index | +0.49[4] |
Astrometry | |
Radial velocity (Rv) | −22.5±0.3[5] km/s |
Proper motion (μ) | RA: +24.761 mas/yr[1] Dec.: −81.714 mas/yr[1] |
Parallax (π) | 21.9768 ± 0.0272 mas[1] |
Distance | 148.4 ± 0.2 ly (45.50 ± 0.06 pc) |
Absolute magnitude (MV) | +3.09[6] |
Details | |
Mass | 1.32[7] M☉ |
Radius | 1.90±0.07[8] R☉ |
Luminosity | 4.93±0.01[1] L☉ |
Surface gravity (log g) | 4.07±0.04[9] cgs |
Temperature | 6,230±55[8] K |
Metallicity [Fe/H] | −0.03±0.05[9] dex |
Rotational velocity (v sin i) | 10±3[10] km/s |
Age | 3.28±0.51[11] Gyr |
Other designations | |
Database references | |
SIMBAD | data |
HD 180134 (HR 7297; 52 G. Telescopii) is a solitary star located in the southern constellation Telescopium. It has an apparent magnitude of 6.36,[2] placing it near the limit for naked eye visibility, even under ideal conditions. The object is located relatively close at a distance of 148.4 light-years based on Gaia DR3 parallax measurements,[1] and it is drifting closer with a heliocentric radial velocity of −22.5 km/s.[5] At its current distance, HD 180134's brightness is diminished by two-tenths of a magnitude due to interstellar extinction[14] and it has an absolute magnitude of +3.09.[6]
HD 180134 has a stellar classification of F7 V,[3] indicating that it is an ordinary F-type main-sequence star that is currently generating energy via hydrogen fusion at its core. It has 1.32 times the mass of the Sun[7] and 1.9 times the radius of the Sun.[8] It radiates 4.93 times the luminosity of the Sun[1] from its photosphere at an effective temperature of 6,230 K,[8] giving a whitish-yellow hue when viewed in the night sky. HD 180134 is slightly metal deficient with an iron abundance 93% that of the Sun or [Fe/H] = −0.03,[9] and it spins modestly with a projected rotational velocity of approximately 10 km/s.[10] At the age of 3.28 billion years,[11] it is 1.49 magnitudes above the zero age main sequence, meaning that it is evolved.[15]
In 2006, an infrared excess was detected around the star, which could indicate the presence of a circumstellar disk. The disk has a temperature less than 145 K, making it a cool disk; it has an angular separation greater than 0.19 arcseconds or a physical separation greater than 8.6 astronomical units.[16]
References
- ^ 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 Høg, E.; Fabricius, C.; Makarov, V. V.; Urban, S.; Corbin, T.; Wycoff, G.; Bastian, U.; Schwekendiek, P.; Wicenec, A. (March 2000). "The Tycho-2 catalogue of the 2.5 million brightest stars". Astronomy and Astrophysics. 355: L27–L30. Bibcode:2000A&A...355L..27H. ISSN 0004-6361. S2CID 17128864.
- ^ a b Houk, N.; Cowley, A. P. (1975). University of Michigan Catalogue of two-dimensional spectral types for the HD stars: Declinations −90° to −53°. Vol. 1. Bibcode:1975mcts.book.....H.
- ^ Johnson, H. L.; Mitchell, R. I.; Iriarte, B.; Wisniewski, W. Z. (1966). "UBVRIJKL Photometry of the Bright Stars". Communications of the Lunar and Planetary Laboratory. 4: 99–110. Bibcode:1966CoLPL...4...99J.
- ^ a b Gontcharov, G. A. (November 2006). "Pulkovo Compilation of Radial Velocities for 35,495 Hipparcos stars in a common system". Astronomy Letters. 32 (11): 759–771. arXiv:1606.08053. Bibcode:2006AstL...32..759G. doi:10.1134/S1063773706110065. eISSN 1562-6873. ISSN 1063-7737. S2CID 119231169.
- ^ a b Anderson, E.; Francis, Ch. (May 2012). "XHIP: An extended hipparcos compilation". Astronomy Letters. 38 (5): 331–346. arXiv:1108.4971. Bibcode:2012AstL...38..331A. doi:10.1134/S1063773712050015. eISSN 1562-6873. ISSN 1063-7737. S2CID 119257644.
- ^ a b Lambert, David L.; Reddy, Bacham E. (January 14, 2004). "Lithium abundances of the local thin disc stars". Monthly Notices of the Royal Astronomical Society. 349 (2). Oxford University Press (OUP): 757–767. arXiv:astro-ph/0401259. Bibcode:2004MNRAS.349..757L. doi:10.1111/j.1365-2966.2004.07557.x. ISSN 0035-8711. S2CID 118931004.
- ^ a b c d Masana, E.; Jordi, C.; Ribas, I. (10 April 2006). "Effective temperature scale and bolometric corrections from 2MASS photometry". Astronomy & Astrophysics. 450 (2): 735–746. arXiv:astro-ph/0601049. Bibcode:2006A&A...450..735M. doi:10.1051/0004-6361:20054021. eISSN 1432-0746. ISSN 0004-6361. S2CID 15278668.
- ^ a b c Ramírez, I.; Fish, J. R.; Lambert, D. L.; Allende Prieto, C. (13 August 2012). "Lithium Abundances in nearby FGK Dwarf and Subgiant Stars: Internal Destruction, Galactic Chemical Evolution, and Exoplanets". The Astrophysical Journal. 756 (1): 46. arXiv:1207.0499. Bibcode:2012ApJ...756...46R. doi:10.1088/0004-637X/756/1/46. eISSN 1538-4357. ISSN 0004-637X. S2CID 119199829.
- ^ a b Balachandran, Suchitra (May 1990). "Lithium depletion and rotation in main-sequence stars". The Astrophysical Journal. 354. American Astronomical Society: 310. Bibcode:1990ApJ...354..310B. doi:10.1086/168691. ISSN 0004-637X. S2CID 120769481.
- ^ a b Feltzing, S.; Holmberg, J.; Hurley, J. R. (October 2001). "The solar neighbourhood age-metallicity relation - Does it exist?". Astronomy & Astrophysics. 377 (3): 911–924. arXiv:astro-ph/0108191. Bibcode:2001A&A...377..911F. doi:10.1051/0004-6361:20011119. eISSN 1432-0746. ISSN 0004-6361. S2CID 4811000.
- ^ Gould, Benjamin Apthorp (1878). "Uranometria Argentina : brillantez y posicion de las estrellas fijas, hasta la septima magnitud, comprendidas dentro de cien grados del polo austral : con atlas". Resultados del Observatorio Nacional Argentino. 1. Bibcode:1879RNAO....1.....G.
- ^ "HD 180134". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved August 17, 2023.
- ^ Gontcharov, George A.; Mosenkov, Aleksandr V. (28 September 2017). "Verifying reddening and extinction for Gaia DR1 TGAS main sequence stars". Monthly Notices of the Royal Astronomical Society. 472 (4): 3805–3820. arXiv:1709.01160. Bibcode:2017MNRAS.472.3805G. doi:10.1093/mnras/stx2219. eISSN 1365-2966. ISSN 0035-8711. S2CID 118879856.
- ^ Nordström, B.; Mayor, M.; Andersen, J.; Holmberg, J.; Pont, F.; Jørgensen, B. R.; Olsen, E. H.; Udry, S.; Mowlavi, N. (16 April 2004). "The Geneva-Copenhagen survey of the Solar neighbourhood". Astronomy & Astrophysics. 418 (3): 989–1019. arXiv:astro-ph/0405198. Bibcode:2004A&A...418..989N. doi:10.1051/0004-6361:20035959. eISSN 1432-0746. ISSN 0004-6361. S2CID 11027621.
- ^ Smith, P. S.; Hines, D. C.; Low, F. J.; Gehrz, R. D.; Polomski, E. F.; Woodward, C. E. (June 6, 2006). "Spitzer Far-Infrared Detections of Cold Circumstellar Disks". The Astrophysical Journal. 644 (2). American Astronomical Society: L125–L128. arXiv:astro-ph/0605334. Bibcode:2006ApJ...644L.125S. doi:10.1086/505749. ISSN 0004-637X. S2CID 17354780.
- v
- t
- e
Bayer | |
---|---|
Variable | |
HR | |
HD | |
Other |
Exoplanets |
---|
Star clusters |
---|
NGC | |
---|---|
Other |
![](http://upload.wikimedia.org/wikipedia/en/thumb/9/96/Symbol_category_class.svg/16px-Symbol_category_class.svg.png)