WR 124
| Observation data Epoch J2000 Equinox J2000 | |
|---|---|
| Constellation | Sagitta |
| Right ascension | 19h 11m 30.875s[1] |
| Declination | +16° 51′ 38.20″[1] |
| Apparent magnitude (V) | 11.50±0.11[2] |
| Characteristics | |
| Spectral type | WN8h[3] |
| Apparent magnitude (B) | 12.19±0.16[2] |
| Apparent magnitude (J) | 8.578±0.024[4] |
| Apparent magnitude (H) | 8.179±0.018[4] |
| Apparent magnitude (K) | 7.732±0.018[4] |
| B−V | 0.69[2] |
| Variable type | Eruptive (WR)[5] |
| Astrometry | |
| Radial velocity (Rv) | 190±7.4[6] km/s |
| Proper motion (μ) | RA: −2.517±0.012[1] mas/yr Dec.: −5.671±0.012[1] mas/yr |
| Parallax (π) | 0.1568 ± 0.0140 mas[1] |
| Distance | Pang-bô͘:ErrorBar2 ly (Pang-bô͘:ErrorBar2 pc) |
| Absolute magnitude (MV) | −6.58[7] |
| Details | |
| Mass | 20[7] M☉ |
| Radius | 11.93[7] Pang-bô͘:Solar radius |
| Luminosity | 562,000[7] Pang-bô͘:Solar luminosity |
| Temperature | 44,700[7] K |
| Age | 8.6[8] Myr |
| Other designations | |
| Database references | |
| SIMBAD | data |
WR 124 sī thian-tsìnn tsō tang-tiong ê tsi̍t-lia̍p Wolf–Rayet hîng-tshenn (star). Sì-khoo-uî-á khuân-jiáu tio̍h tsi̍t-ê iû hông kiò-tsò M1-67 ê pâi-tshut bu̍t-tsit sóo tsoo-sîng ê khuân-hîng sing-hûn.[9] WR 124 sī Gîn-hô hē tang-tiong liû-suan sok-tōo siōng kín ê hîng-tshenn tsi-it, kìng-hiòng sok-tōo uî 200 km/s. WR 124 iû Paul W. Merrill tī 1938-nî huat-hiān, hông kàm-tīng tsò tsi̍t-lia̍p ko-sok ê Wolf–Rayet hîng-tshenn.[10] WR 124 teh piàn-tshenn (變星) tsóng-pió tang-tiong hông lia̍t tsò QR Sagittae, huān-uî sī0.08 sing-tíng.[5]
Tsù-kái
[siu-kái | kái goân-sí-bé]- ↑ 1.0 1.1 1.2 1.3 1.4 Brown, A. G. A.; et al. (2021). "Gaia Early Data Release 3: Summary of the contents and survey properties". Astronomy & Astrophysics. 649: A1. arXiv:2012.01533
. Bibcode:2021A&A...649A...1G. (Erratum: doi:10.1051/0004-6361/202039657e). Gaia EDR3 record for this source at VizieR.
- ↑ 2.0 2.1 2.2 Høg, E.; Fabricius, C.; Makarov, V. V.; Urban, S.; Corbin, T.; Wycoff, G.; Bastian, U.; Schwekendiek, P.; Wicenec, A. (2000). "The Tycho-2 catalogue of the 2.5 million brightest stars". Astronomy and Astrophysics. 355: L27. Bibcode:2000A&A...355L..27H. doi:10.1888/0333750888/2862.
- ↑ Hamann, W.-R.; Gräfener, G.; Liermann, A. (2006). "The Galactic WN stars". Astronomy and Astrophysics. 457 (3): 1015. arXiv:astro-ph/0608078 . Bibcode:2006A&A...457.1015H. doi:10.1051/0004-6361:20065052.
- ↑ 4.0 4.1 4.2 Cutri, Roc M.; Skrutskie, Michael F.; Van Dyk, Schuyler D.; Beichman, Charles A.; Carpenter, John M.; Chester, Thomas; Cambresy, Laurent; Evans, Tracey E.; Fowler, John W.; Gizis, John E.; Howard, Elizabeth V.; Huchra, John P.; Jarrett, Thomas H.; Kopan, Eugene L.; Kirkpatrick, J. Davy; Light, Robert M.; Marsh, Kenneth A.; McCallon, Howard L.; Schneider, Stephen E.; Stiening, Rae; Sykes, Matthew J.; Weinberg, Martin D.; Wheaton, William A.; Wheelock, Sherry L.; Zacarias, N. (2003). "VizieR Online Data Catalog: 2MASS All-Sky Catalog of Point Sources (Cutri+ 2003)". CDS/ADC Collection of Electronic Catalogues. 2246: II/246. Bibcode:2003yCat.2246....0C.
- ↑ 5.0 5.1 Kukarkin, B. V.; Kholopov, P. N.; Pskovsky, Y. P.; Efremov, Y. N.; Kukarkina, N. P.; Kurochkin, N. E.; Medvedeva, G. I. (1971). "The third edition containing information on 20437 variable stars discovered and designated till 1968". General Catalogue of Variable Stars: 0. Bibcode:1971GCVS3.C......0K.
- ↑ Kharchenko, N. V.; Scholz, R.-D.; Piskunov, A. E.; Röser, S.; Schilbach, E. (2007). "Astrophysical supplements to the ASCC-2.5: Ia. Radial velocities of ˜55000 stars and mean radial velocities of 516 Galactic open clusters and associations". Astronomische Nachrichten. 328 (9): 889. arXiv:0705.0878 . Bibcode:2007AN....328..889K. doi:10.1002/asna.200710776.
- ↑ 7.0 7.1 7.2 7.3 7.4 Sota, A.; Maíz Apellániz, J.; Morrell, N. I.; Barbá, R. H.; Walborn, N. R.; Gamen, R. C.; Arias, J. I.; Alfaro, E. J.; Oskinova, L. M. (2019). "The Galactic WN stars revisited. Impact of Gaia distances on fundamental stellar parameters". Astronomy & Astrophysics. A57: 625. arXiv:1904.04687 . Bibcode:2019A&A...625A..57H. doi:10.1051/0004-6361/201834850.
- ↑ Marchenko, S. V.; Moffat, A. F. J.; Crowther, P. A. (2010). "Population I Wolf–Rayet Runaway Stars: The Case of Wr124 and Its Expanding Nebula M1-67". The Astrophysical Journal. 724 (1): L90–L94. arXiv:1011.0785 . Bibcode:2010ApJ...724L..90M. doi:10.1088/2041-8205/724/1/L90.
- ↑ Crowther, Paul A.; Pasquali, A.; De Marco, Orsola; Schmutz, W.; Hillier, D. J.; De Koter, A. (1999). "Wolf–Rayet nebulae as tracers of stellar ionizing fluxes. I. M1-67". Astronomy and Astrophysics. 350: 1007. arXiv:astro-ph/9908200 . Bibcode:1999A&A...350.1007C.
- ↑ Merrill, P. W. (1938). "A Wolf–Rayet Star with High Velocity". Publications of the Astronomical Society of the Pacific. 50 (298): 350. Bibcode:1938PASP...50..350M. doi:10.1086/124982.
Tsham-ua̍t
[siu-kái | kái goân-sí-bé]- Brown, A. G. A.
- Astronomy & Astrophysics
- VizieR
- Mid-Infrared Instrument (MIRI)
- NIRCam (Near-InfraRed Camera)
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