41 Cygni: Difference between revisions
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| title=Validation of the new Hipparcos reduction |
| title=Validation of the new Hipparcos reduction |
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| journal=Astronomy and Astrophysics |
| journal=Astronomy and Astrophysics |
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| volume=474 | issue=2 | pages= |
| volume=474 | issue=2 | pages=653–664 | year=2007 |
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| bibcode=2007A&A...474..653V | arxiv=0708.1752 |
| bibcode=2007A&A...474..653V | arxiv=0708.1752 |
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| doi=10.1051/0004-6361:20078357 }}</ref> |
| doi=10.1051/0004-6361:20078357 | s2cid=18759600 |
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<ref name=luck>{{cite journal |
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| title=Pulkovo Compilation of Radial Velocities for 35 495 Hipparcos stars in a common system |
| title=Pulkovo Compilation of Radial Velocities for 35 495 Hipparcos stars in a common system |
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| journal=Astronomy Letters |
| journal=Astronomy Letters |
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| volume=32 | issue=11 | pages= |
| volume=32 | issue=11 | pages=759–771 | year=2006 |
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| bibcode=2006AstL...32..759G | arxiv=1606.08053 |
| bibcode=2006AstL...32..759G | arxiv=1606.08053 |
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| doi=10.1134/S1063773706110065 }}</ref> |
| doi=10.1134/S1063773706110065 | s2cid=119231169 |
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}}</ref> |
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<ref name=kovtyukh>{{cite journal |
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| volume=423 | issue=4 | pages=3268 | year=2012 |
| volume=423 | issue=4 | pages=3268 | year=2012 |
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| bibcode=2012MNRAS.423.3268K | arxiv=1204.4115 |
| bibcode=2012MNRAS.423.3268K | arxiv=1204.4115 |
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| doi=10.1111/j.1365-2966.2012.21117.x }}</ref> |
| doi=10.1111/j.1365-2966.2012.21117.x | doi-access=free | s2cid=118683158 }}</ref> |
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<ref name=leonid09>{{cite journal |
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| volume=402 | issue=2 | pages=1369 | year=2010 |
| volume=402 | issue=2 | pages=1369 | year=2010 |
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| bibcode=2010MNRAS.402.1369L | arxiv=0911.1335 |
| bibcode=2010MNRAS.402.1369L | arxiv=0911.1335 |
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| doi=10.1111/j.1365-2966.2009.15979.x }}</ref> |
| doi=10.1111/j.1365-2966.2009.15979.x | doi-access=free | s2cid=119096173 }}</ref> |
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<ref name=Gray2001>{{citation |
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| journal=[[Monthly Notices of the Royal Astronomical Society]] |
| journal=[[Monthly Notices of the Royal Astronomical Society]] |
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| volume=389 | issue=2 | pages=869–879 | date=September 2008 |
| volume=389 | issue=2 | pages=869–879 | date=September 2008 |
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| doi=10.1111/j.1365-2966.2008.13596.x | postscript=. |
| doi=10.1111/j.1365-2966.2008.13596.x | doi-access=free | postscript=. |
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| bibcode=2008MNRAS.389..869E | arxiv=0806.2878 }}</ref> |
| bibcode=2008MNRAS.389..869E | arxiv=0806.2878 | s2cid=14878976 }}</ref> |
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[[Category:Henry Draper Catalogue objects|195295]] |
[[Category:Henry Draper Catalogue objects|195295]] |
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[[Category:Hipparcos objects|101076]] |
[[Category:Hipparcos objects|101076]] |
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[[Category: |
[[Category:Bright Star Catalogue objects|7834]] |
Latest revision as of 12:18, 22 August 2024
Observation data Epoch J2000 Equinox J2000 | |
---|---|
Constellation | Cygnus |
Right ascension | 20h 29m 23.73561s[1] |
Declination | +30° 22′ 06.7968″[1] |
Apparent magnitude (V) | 4.02[2] |
Characteristics | |
Evolutionary stage | supergiant[3] |
Spectral type | F5Ib-II[3] |
B−V color index | +0.38[2] |
Variable type | constant[3] |
Astrometry | |
Radial velocity (Rv) | −18.20[4] km/s |
Proper motion (μ) | RA: 6.89[1] mas/yr Dec.: −0.87[1] mas/yr |
Parallax (π) | 4.24 ± 0.16 mas[1] |
Distance | 770 ± 30 ly (236 ± 9 pc) |
Absolute magnitude (MV) | −3.32[5] |
Details | |
Mass | 5.3±0.4[6] M☉ |
Radius | 27.01+2.51 −1.01[7] R☉ |
Luminosity | 1,197±90[7] L☉ |
Surface gravity (log g) | 2.32±0.08[6] cgs |
Temperature | 6533+126 −283[7] K |
Metallicity [Fe/H] | 0.00±0.07[6] dex |
Rotational velocity (v sin i) | 9.5±2.0[3] km/s |
Age | 85[6] Myr |
Other designations | |
Database references | |
SIMBAD | data |
41 Cygni is a single[9] star in the northern constellation of Cygnus, located near the southern border with Vulpecula. It is visible to the naked eye as a faint, yellow-white hued star with an apparent visual magnitude of 4.02.[2] The star lies at a distance of around 770 light years from the Sun, based on parallax, and is drifting closer with a radial velocity of −18 km/s.[4]
This is a sharp-lined supergiant star[10] with a stellar classification of F5Ib-II.[3] It is 85[6] million years old with 5.3[6] times the mass of the Sun and is spinning with a projected rotational velocity of 9.5 km/s.[3] Having exhausted the supply of hydrogen at its core, the star has expanded to 27[7] times the Sun's radius. It is radiating about 1,200[7] times the Sun's luminosity from its swollen photosphere at an effective temperature of 6,533 K.[7]
References
[edit]- ^ a b c d e Van Leeuwen, F. (2007). "Validation of the new Hipparcos reduction". Astronomy and Astrophysics. 474 (2): 653–664. arXiv:0708.1752. Bibcode:2007A&A...474..653V. doi:10.1051/0004-6361:20078357. S2CID 18759600.
- ^ a b c Luck, R. Earle (2014). "Parameters and Abundances in Luminous Stars". The Astronomical Journal. 147 (6): 137. Bibcode:2014AJ....147..137L. doi:10.1088/0004-6256/147/6/137.
- ^ a b c d e f Gray, R. O.; et al. (April 2001), "The Physical Basis of Luminosity Classification in the Late A-, F-, and Early G-Type Stars. I. Precise Spectral Types for 372 Stars", The Astronomical Journal, 121 (4): 2148–2158, Bibcode:2001AJ....121.2148G, doi:10.1086/319956
- ^ a b Gontcharov, G. A. (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. S2CID 119231169.
- ^ Kovtyukh, V. V.; et al. (2012). "Accurate luminosities from the oxygen λ7771-4 Å triplet and the fundamental parameters of F-G supergiants". Monthly Notices of the Royal Astronomical Society. 423 (4): 3268. arXiv:1204.4115. Bibcode:2012MNRAS.423.3268K. doi:10.1111/j.1365-2966.2012.21117.x. S2CID 118683158.
- ^ a b c d e f Lyubimkov, Leonid S.; et al. (2010). "Accurate fundamental parameters for A-, F- and G-type Supergiants in the solar neighbourhood". Monthly Notices of the Royal Astronomical Society. 402 (2): 1369. arXiv:0911.1335. Bibcode:2010MNRAS.402.1369L. doi:10.1111/j.1365-2966.2009.15979.x. S2CID 119096173.
- ^ a b c d e f 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.
- ^ "41 Cyg". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved 2019-07-22.
- ^ Eggleton, P. P.; Tokovinin, A. A. (September 2008), "A catalogue of multiplicity among bright stellar systems", Monthly Notices of the Royal Astronomical Society, 389 (2): 869–879, arXiv:0806.2878, Bibcode:2008MNRAS.389..869E, doi:10.1111/j.1365-2966.2008.13596.x, S2CID 14878976.
- ^ Adelman, S. J.; et al. (January 2008). "Elemental abundance analyses with DAO spectrograms: XXXI. The early F supergiants ν Her (F2 II) and 41 Cyg (F5 Ib-II)". Astronomische Nachrichten. 329 (1): 26–38. Bibcode:2008AN....329....4A. doi:10.1002/asna.200710863.