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Star in the constellation Vulpecula
NR Vulpeculae
Observation dataEpoch J2000 Equinox J2000
Constellation
Vulpecula
Right ascension 19h 50m 11.928s [2]
Declination
24° 55′ 24.18″[2]
Apparent magnitude (V)9.13 - 9.61[3]
Characteristics
Evolutionary stage
M-type red supergiant [4] K-type red supergiant[5]
Spectral type
M1Ia[3] [5]
Variable type
LC [3]
Astrometry Radial velocity (Rv )± 0.33[2] Proper motion (μ) RA: ± 0.016mas /yr [2] Dec.: ± 0.023mas /yr [2] Parallax (π)0.3225 ± 0.0251 mas [2] Distance +711 ly +218 pc )[6] Details Radius 908[7] R ☉ Luminosity 111,000[8] [5] L ☉ Surface gravity (log g )−0.13[9] cgs Temperature 4,000[5] K Metallicity +0.093[9] dex Other designations NR Vulpeculae,
TYC 2144-1244-1,
GSC 02144-01244,
IRC +20438,
2MASS J19501193+2455240,
IRAS 19480+2447,
AAVSO 1946+24,
BD +24 3902,
HD 339034,
RAFGL 2462,
UCAC2 40577951
Database references SIMBAD data
NR Vulpeculae is a red supergiant and irregular variable star in the constellation Vulpecula . It has an effective temperature around 4,000 K, a radius of 908 times larger than the Sun, which means that if it were in the place of the Sun, its surface would reach beyond Mars ' orbit. Consequently, NR Vulpeculae is also a luminous star, radiating 111,000 - 225,000 times as much energy as the Sun. It is considered a likely member of the Vulpecula OB1 stellar association .[5]
References [ edit ]
^ "ASAS-SN Variable Stars Database" . ASAS-SN Variable Stars Database . ASAS-SN. Retrieved 6 January 2022 .^ a b c d e 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 .^ a b c NR Vul, database entry, The combined table of GCVS Vols I-III and NL 67-78 with improved coordinates, General Catalogue of Variable Stars Archived 2017-06-20 at the Wayback Machine , Sternberg Astronomical Institute, Moscow, Russia. Accessed on line November 12, 2010.
^ Dorn-Wallenstein, Trevor Z.; Levesque, Emily M.; Neugent, Kathryn F.; Davenport, James R. A.; Morris, Brett M.; Gootkin, Keyan (2020), "Short-term Variability of Evolved Massive Stars with TESS. II. A New Class of Cool, Pulsating Supergiants", The Astrophysical Journal , 902 (1): 24, arXiv :2008.11723 Bibcode :2020ApJ...902...24D , doi :10.3847/1538-4357/abb318 S2CID 221340538 ^ a b c d e Levesque, Emily M. ; Massey, Philip; Olsen, K. A. G.; Plez, Bertrand; Josselin, Eric; Maeder, Andre; Meynet, Georges (August 2005). "The Effective Temperature Scale of Galactic Red Supergiants: Cool, but Not As Cool As We Thought". The Astrophysical Journal . 628 (2): 973–985. arXiv :astro-ph/0504337 Bibcode :2005ApJ...628..973L . doi :10.1086/430901 . S2CID 15109583 .^ Bailer-Jones, C. A. L.; Rybizki, J.; Fouesneau, M.; Demleitner, M.; Andrae, R. (2021-03-01). "Estimating distances from parallaxes. V: Geometric and photogeometric distances to 1.47 billion stars in Gaia Early Data Release 3" . The Astronomical Journal . 161 (3): 147. arXiv :2012.05220 Bibcode :2021AJ....161..147B . doi :10.3847/1538-3881/abd806 ISSN 0004-6256 . here .^ Healy, Sarah; Horiuchi, Shunsaku; Molla, Marta Colomer; Milisavljevic, Dan; Tseng, Jeff; Bergin, Faith; Weil, Kathryn; Tanaka, Masaomi (2024-03-23). "Red Supergiant Candidates for Multimessenger Monitoring of the Next Galactic Supernova" . Monthly Notices of the Royal Astronomical Society . 529 (4): 3630–3650. Bibcode :2024MNRAS.529.3630H . doi :10.1093/mnras/stae738 ISSN 0035-8711 . ^ Mauron, N.; Josselin, E. (2011). "The mass-loss rates of red supergiants and the de Jager prescription". Astronomy and Astrophysics . 526 : A156. arXiv :1010.5369 Bibcode :2011A&A...526A.156M . doi :10.1051/0004-6361/201013993 . S2CID 119276502 . ^ a b Anders, F.; Khalatyan, A.; Chiappini, C.; Queiroz, A. B.; Santiago, B. X.; Jordi, C.; Girardi, L.; Brown, A. G. A.; Matijevič, G.; Monari, G.; Cantat-Gaudin, T.; Weiler, M.; Khan, S.; Miglio, A.; Carrillo, I.; Romero-Gómez, M.; Minchev, I.; De Jong, R. S.; Antoja, T.; Ramos, P.; Steinmetz, M.; Enke, H. (2019). "Photo-astrometric distances, extinctions, and astrophysical parameters for Gaia DR2 stars brighter than G = 18". Astronomy and Astrophysics . 628 : A94. arXiv :1904.11302 Bibcode :2019A&A...628A..94A . doi :10.1051/0004-6361/201935765 . S2CID 131780028 .
