R Reticuli

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R Reticuli
RRetLightCurve.png
The visual band light curve of R Reticui, from AAVSO data [1]
Observation data
Epoch J2000       Equinox J2000
Constellation Reticulum
Right ascension 04h 33m 32.83070s [2]
Declination −63° 01′ 44.9951″ [2]
Apparent magnitude  (V)9.23 [3] (6.35 – 14.2) [4]
Characteristics
Evolutionary stage AGB [5]
Spectral type M4e - M7.5e [6]
B−V color index 1.099±0.045 [3]
Variable type Mira [6]
Astrometry
Radial velocity (Rv)26.0±4.6 [3]  km/s
Proper motion (μ)RA: +12.111 [2]   mas/yr
Dec.: +16.384 [2]   mas/yr
Parallax (π)1.3622 ± 0.0492  mas [2]
Distance 2,390 ± 90  ly
(730 ± 30  pc)
Details
Mass 0.88+0.04
−0 [7]   M☉
Radius 249+21
−34 [8]   R☉
Luminosity 7,571±1,671 [8]   L☉
Surface gravity (log g)−0.445 [7]   cgs
Temperature 3,410+264
−131 [8]   K
Metallicity [Fe/H]0.55 [7]   dex
Other designations
R Ret, S Ret, HD  29383, HIP  21252, SAO  249053 [9]
Database references
SIMBAD data

R Reticuli, also listed under the duplicate variable star designation S Reticuli, [4] is a Mira variable star in the southern constellation Reticulum. It is an aging red giant star on the asymptotic giant branch [5] with a stellar classification that varies between M4e to M7.5e, [6] being hottest near maximum visual magnitude. [10] The brightness of the star varies between apparent visual magnitudes 6.35 and 14.2 [4] with an average period of 281.08±0.58 d. [11] The mean maximum magnitude is 7.57 and the mean minimum magnitude 13.80. [11]

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<span class="mw-page-title-main">S Boötis</span>

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<span class="mw-page-title-main">R Cancri</span> Variable star in the constellation Cancer

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<span class="mw-page-title-main">U Microscopii</span> Star in the constellation Microscopium

U Microscopii is a Mira variable star in the constellation Microscopium. It ranges from magnitude 7 to 14.4 over a period of 334 days. The Astronomical Society of Southern Africa in 2003 reported that observations of U Microscopii were very urgently needed as data on its light curve was incomplete.

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<span class="mw-page-title-main">S Cassiopeiae</span> Star in the constellation Cassiopeia

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<span class="mw-page-title-main">T Leporis</span> Star in the constellation Lepus

T Leporis is a variable star in the constellation of Lepus, the Hare. It is located half a degree from ε Leporis in the sky; its distance is approximately 1,100 light years from the Solar System. It has the spectral type M6ev, and is a Mira variable — as is R Leporis, in the same constellation — whose apparent magnitude varies between +7.40 and +14.30 with a period of 368.13 days.

<span class="mw-page-title-main">V Crucis</span> Variable star in the constellation Crux

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<span class="mw-page-title-main">R Chamaeleontis</span> Variable star in the constellation Chamaeleon

R Chamaeleontis, also known as HD 71793, is a Mira variable located in the southern circumpolar constellation Chamaeleon. It has an apparent magnitude that ranges from 7.5 to 14.1, which is below the limit for naked eye visibility. Gaia DR3 parallax measurements place it about 3,000 light years away and it is currently approaching with a heliocentric radial velocity of 22 km/s.

References

  1. ↑ "Download Data". aavso.org. AAVSO. Retrieved 1 October 2021.
  2. 1 2 3 4 5 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.
  3. 1 2 3 Anderson, E.; Francis, Ch. (2012). "XHIP: An extended hipparcos compilation". Astronomy Letters. 38 (5): 331. arXiv: 1108.4971 . Bibcode:2012AstL...38..331A. doi:10.1134/S1063773712050015. S2CID   119257644.
  4. 1 2 3 VSX; Otero, S. A. (28 January 2011). "R Reticuli". AAVSO Website. American Association of Variable Star Observers . Retrieved 25 May 2014.
  5. 1 2 Whitelock, Patricia A.; et al. (May 2008). "AGB variables and the Mira period-luminosity relation". Monthly Notices of the Royal Astronomical Society. 386 (1): 313–323. arXiv: 0801.4465 . Bibcode:2008MNRAS.386..313W. doi:10.1111/j.1365-2966.2008.13032.x. S2CID   17676993.
  6. 1 2 3 Samus, N. N.; et al. (2017). "General Catalogue of Variable Stars". Astronomy Reports. 5.1. 61 (1): 80–88. Bibcode:2017ARep...61...80S. doi:10.1134/S1063772917010085. S2CID   125853869.
  7. 1 2 3 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.
  8. 1 2 3 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.
  9. ↑ "R Ret". SIMBAD . Centre de données astronomiques de Strasbourg . Retrieved 2020-11-18.
  10. ↑ Skiff, B. A. (2014). "VizieR Online Data Catalog: Catalogue of Stellar Spectral Classifications (Skiff, 2009- )". VizieR On-line Data Catalog. Bibcode:2014yCat....1.2023S.
  11. 1 2 Vogt, N.; et al. (November 2016). "Determination of Pulsation Periods and Other Parameters of 2875 Stars Classified as MIRA in the All Sky Automated Survey (ASAS)". The Astrophysical Journal Supplement Series. 227 (1): 13. arXiv: 1609.05246 . Bibcode:2016ApJS..227....6V. doi: 10.3847/0067-0049/227/1/6 . S2CID   119295645. 6.


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