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HD 180134
Location of 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]
Distance148.4 ± 0.2  ly
(45.50 ± 0.06  pc)
Absolute magnitude (MV)+3.09 [6]
Details
Mass1.32 [7]  M☉
Radius1.90±0.07 [8]  R☉
Luminosity4.93±0.01 [1]  L☉
Surface gravity (log g)4.07±0.04 [9]  cgs
Temperature6,230±55 [8]  K
Metallicity [Fe/H]−0.03±0.05 [9]  dex
Rotational velocity (v sin i)10±3 [10] km/s
Age3.28±0.51 [11]  Gyr
Other designations
52 G. Telescopii [12], CD−53°8089, CPD−53°9513, GC 26573, HD 180134, HIP 94858, HR 7297, SAO 246017 [13]
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

  1. ^ 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.
  2. ^ 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.
  3. ^ 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.
  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. ^ 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.
  6. ^ 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.
  7. ^ 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.
  8. ^ 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.
  9. ^ 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.
  10. ^ 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.
  11. ^ 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.
  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.
Retrieved from " https://en.wikipedia.org/?title=HD_180134&oldid=1170937270"
From Wikipedia, the free encyclopedia
HD 180134
Location of 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]
Distance148.4 ± 0.2  ly
(45.50 ± 0.06  pc)
Absolute magnitude (MV)+3.09 [6]
Details
Mass1.32 [7]  M☉
Radius1.90±0.07 [8]  R☉
Luminosity4.93±0.01 [1]  L☉
Surface gravity (log g)4.07±0.04 [9]  cgs
Temperature6,230±55 [8]  K
Metallicity [Fe/H]−0.03±0.05 [9]  dex
Rotational velocity (v sin i)10±3 [10] km/s
Age3.28±0.51 [11]  Gyr
Other designations
52 G. Telescopii [12], CD−53°8089, CPD−53°9513, GC 26573, HD 180134, HIP 94858, HR 7297, SAO 246017 [13]
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

  1. ^ 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.
  2. ^ 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.
  3. ^ 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.
  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. ^ 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.
  6. ^ 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.
  7. ^ 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.
  8. ^ 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.
  9. ^ 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.
  10. ^ 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.
  11. ^ 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.
  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.
Retrieved from " https://en.wikipedia.org/?title=HD_180134&oldid=1170937270"

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