Misplaced Pages

HD 180134

Location of HD 180134
Observation data Epoch J2000.0      Equinox J2000.0 (ICRS)
Constellation	Telescopium
Right ascension	19 18 09.78130
Declination	−53° 23′ 13.5119″
Apparent magnitude (V)	6.36±0.01
Characteristics
Spectral type	F7 V
B−V color index	+0.49
Astrometry
Radial velocity (Rv)	−22.5±0.3 km/s
Proper motion (μ)	RA: +24.761 mas/yr Dec.: −81.714 mas/yr
Parallax (π)	21.9768 ± 0.0272 mas
Distance	148.4 ± 0.2 ly (45.50 ± 0.06 pc)
Absolute magnitude (MV)	+3.09
Details
Mass	1.32 M☉
Radius	1.90±0.07 R☉
Luminosity	4.93±0.01 L☉
Surface gravity (log g)	4.07±0.04 cgs
Temperature	6,230±55 K
Metallicity	−0.03±0.05 dex
Rotational velocity (v sin i)	10±3 km/s
Age	3.28±0.51 Gyr
Other designations
52 G. Telescopii[12], CD−53°8089, CPD−53°9513, GC 26573, HD 180134, HIP 94858, HR 7297, SAO 246017
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, 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, and it is drifting closer with a heliocentric radial velocity of −22.5 km/s. At its current distance, HD 180134's brightness is diminished by two-tenths of a magnitude due to interstellar extinction and it has an absolute magnitude of +3.09.

HD 180134 has a stellar classification of F7 V, 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 and 1.9 times the radius of the Sun. It radiates 4.93 times the luminosity of the Sun from its photosphere at an effective temperature of 6,230 K, 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 = −0.03, and it spins modestly with a projected rotational velocity of approximately 10 km/s. At the age of 3.28 billion years, it is 1.49 magnitudes above the zero age main sequence, meaning that it is evolved.

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.

References

1. ^ 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.
2. ^ 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.
3. ^ 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.
4. 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.
5. ^ 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.
6. ^ 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.
7. ^ 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.
8. ^ 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.
9. ^ 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.
10. ^ 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.
11. ^ 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.
12. 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.
13. "HD 180134". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved August 17, 2023.
14. 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.
15. 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.
16. 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 Constellation of Telescopium
List of stars in Telescopium Telescopium in Chinese astronomy
Stars	Bayer α δ δ ε ζ η ι κ λ μ ν ξ ρ τ Variable RR RS RX BL HO PV PW PZ QQ QS QU QV HR 6778 6821 6894 6954 6986 7065 7092 7093 7095 7097 7190 7223 7233 7271 7289 7297 7370 7388 7411 7459 7521 7537 7548 7549 7621 7674 7714 7745 7749 7758 7766 HD 168871 173047 177365 181295 191760 Other KELT-10 Gliese 754 Gliese 784 GJ 1252
Exoplanets Gliese 754 b Gliese 784 b GJ 1252 b KELT-10b
Star clusters NGC 6584
Galaxies	NGC 6845 6861 Other PKS 2014-55
Category

• F-type main-sequence stars
• Circumstellar disks
• Telescopium
• Gould objects
• Durchmusterung objects
• Henry Draper Catalogue objects
• Hipparcos objects
• Bright Star Catalogue objects