WR 124

WR 124
	; NIRCam and MIRI composite image by the James Webb Space Telescope.
Observation data; Epoch J2000 Equinox J2000
Constellation	Sagitta
Right ascension	19h 11m 30.875s
Declination	+16° 51′ 38.20″
Apparent magnitude (V)	11.50±0.11
Characteristics
Spectral type	WN8h
Apparent magnitude (B)	12.19±0.16
Apparent magnitude (J)	8.578±0.024
Apparent magnitude (H)	8.179±0.018
Apparent magnitude (K)	7.732±0.018
B−V	0.69
Variable type	Eruptive (WR)
Astrometry
Radial velocity (Rv)	190±7.4 km/s
Proper motion (μ)	RA: −2.517±0.012 mas/yr ; Dec.: −5.671±0.012 mas/yr
Parallax (π)	0.1568 ± 0.0140 mas
Distance	Pang-bô͘:ErrorBar2 ly ; (Pang-bô͘:ErrorBar2 pc)
Absolute magnitude (MV)	−6.58
Details
Mass	20 M☉
Radius	11.93 Pang-bô͘:Solar radius
Luminosity	562,000 Pang-bô͘:Solar luminosity
Temperature	44,700 K
Age	8.6 Myr
Other designations
	Merrill's Star, QR Sagittae, HIP 94289, GSC 01586-00411, Sh 2-80, Hen 2-427
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

↑ ^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

Brown, A. G. A.
Astronomy & Astrophysics
VizieR
Mid-Infrared Instrument (MIRI)
NIRCam (Near-InfraRed Camera)

Guā-pōo liân-kiat

[edr3-1] 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.

[tycho2-2] 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-3] 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.

[2mass-4] 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.

[gcvs-5] 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.

[rv-6] 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.

[hamann2019-7] 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-8] 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-9] 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-10] 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.

[1]

[2]

[3]

[4]

[5]

[6]

[7]

[8]

[9]

[10]

Observation data Epoch J2000 Equinox J2000
NIRCam and MIRI composite image by the James Webb Space Telescope.
Constellation	Sagitta
Right ascension	19^h 11^m 30.875^s^[1]
Declination	+16° 51′ 38.20″^[1]
Apparent magnitude (V)	7001115000000000000♠11.50±0.11^[2]
Characteristics
Spectral type	WN8h^[3]
Apparent magnitude (B)	7001121900000000000♠12.19±0.16^[2]
Apparent magnitude (J)	7000857800000000000♠8.578±0.024^[4]
Apparent magnitude (H)	7000817900000000000♠8.179±0.018^[4]
Apparent magnitude (K)	7000773200000000000♠7.732±0.018^[4]
B−V	0.69^[2]
Variable type	Eruptive (WR)^[5]
Astrometry

Radial velocity (R_v)	7002190000000000000♠190±7.4^[6] km/s
Proper motion (μ)	RA: 2999748300000000000♠−2.517±0.012^[1] mas/yr Dec.: 2999432900000000000♠−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 (M_V)	−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
Merrill's Star, QR Sagittae, HIP 94289, GSC 01586-00411, Sh 2-80, Hen 2-427
Database references
SIMBAD	data