Mu Muscae

In this article we are going to talk about Mu Muscae, a topic that has become very relevant in recent years/centuries. Mu Muscae is a topic that has captured the attention of experts and people of all ages, due to its impact on various aspects of society. Throughout this article, we will thoroughly examine what Mu Muscae is, its importance, evolution over time and its influence in different areas. Additionally, we will explore the different perspectives and opinions that exist about Mu Muscae, as well as the challenges and benefits it poses. Without a doubt, Mu Muscae is a topic that concerns us all, and it is essential to understand it in its entirety to better understand the world in which we live.

Mu Muscae
Observation data
Epoch J2000.0      Equinox J2000.0 (ICRS)
Constellation Musca
Right ascension 11h 48m 14.53282s[1]
Declination −66° 48′ 53.6712″[1]
Apparent magnitude (V) 4.6 - 4.8[2]
Characteristics
Spectral type K4 III[3]
U−B color index +1.89[4]
B−V color index +1.54[4]
Variable type Lb[2]
Astrometry
Radial velocity (Rv)+37.4±2.8[5] km/s
Proper motion (μ) RA: −31.223[1] mas/yr
Dec.: −15.938[1] mas/yr
Parallax (π)7.2113±0.1762 mas[1]
Distance450 ± 10 ly
(139 ± 3 pc)
Absolute magnitude (MV)−0.85[6]
Details
Radius52.92+1.01
−0.95[1] R☉
Luminosity602.0±16.9[1] L☉
Temperature3,930+36
−37[1] K
Other designations
μ Mus, CD−66° 1114, HD 102584, HIP 57581, HR 4530, SAO 251597[7]
Database references
SIMBADdata

Mu Muscae, Latinized from μ Muscae, is a solitary[8] star in the southern constellation of Musca. It is visible to the naked eye as a faint, orange-hued star with an apparent visual magnitude of around 4.75.[4] Based upon an annual parallax shift of 7.21 mas as seen from Earth, it is located about 450 light years from the Sun. The star is drifting further away with a radial velocity of +37 km/s.[5]

This is an evolved K-type giant star with a stellar classification of K4 III,[3] having exhausted the supply of hydrogen at its core then cooled and expanded to 53[1] times the Sun's radius. It most likely on the red giant branch, rather than the asymptotic giant branch, and shows no signs of mass loss. Mu Muscae is a type Lb, oxygen-rich irregular variable with a small amplitude[9] that ranges in visual magnitude between 4.71 and 4.76.[10] It is radiating 602 times the luminosity of the Sun from its photosphere at an effective temperature of 3,930 K.[1]

References

  1. ^ a b c d e f g h i j 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.
  2. ^ a b Samus, N. N.; Durlevich, O. V.; et al. (2009). "VizieR Online Data Catalog: General Catalogue of Variable Stars (Samus+ 2007-2013)". VizieR On-line Data Catalog: B/GCVS. Originally Published in: 2009yCat....102025S. 1. Bibcode:2009yCat....102025S.
  3. ^ a b Houk, Nancy; Cowley, A. P. (1979), Michigan catalogue of two-dimensional spectral types for the HD stars, vol. 1, Ann Arbor, Michigan: Dept. of Astronomy, University of Michigan, Bibcode:1978mcts.book.....H.
  4. ^ a b c Mermilliod, J.-C. (1986), "Compilation of Eggen's UBV data, transformed to UBV (unpublished)", Catalogue of Eggen's UBV Data, SIMBAD, Bibcode:1986EgUBV........0M.
  5. ^ a b de Bruijne, J. H. J.; Eilers, A.-C. (October 2012), "Radial velocities for the HIPPARCOS-Gaia Hundred-Thousand-Proper-Motion project", Astronomy & Astrophysics, 546: 14, arXiv:1208.3048, Bibcode:2012A&A...546A..61D, doi:10.1051/0004-6361/201219219, S2CID 59451347, A61.
  6. ^ 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.
  7. ^ "* mu. Mus". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved 2017-03-14.{{cite web}}: CS1 maint: postscript (link)
  8. ^ 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.
  9. ^ Kerschbaum, F. (November 1999), "Irregular variables of type Lb. Energy distributions and stellar parameters", Astronomy and Astrophysics, 351: 627–634, Bibcode:1999A&A...351..627K.
  10. ^ BSJ (October 31, 2011), "Mu Muscae", AAVSO Website, American Association of Variable Star Observers, retrieved 2017-03-15.