  | |
| 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
- ^ 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.
| |
| 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
- ^ 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.