MX Puppis

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MX Puppis
Puppis constellation map.svg
Red circle.svg
Location of MX Puppis (circled)
Observation data
Epoch J2000       Equinox J2000
Constellation Puppis
Right ascension 08h 13m 29.51720s [1]
Declination −35° 53′ 58.2662″ [1]
Apparent magnitude  (V)4.60 - 4.92 [2]
Characteristics
Spectral type B1.5 IVe [3]
U−B color index −0.98 [4]
B−V color index −0.11 [4]
Variable type γ Cas [2]
Astrometry
Radial velocity (Rv)+35.00 [5]  km/s
Proper motion (μ)RA: −7.30 [1]   mas/yr
Dec.: +9.75 [1]   mas/yr
Parallax (π)3.51 ± 0.16  mas [1]
Distance 930 ± 40  ly
(280 ± 10  pc)
Absolute magnitude  (MV)−2.97 [6]
Details
Mass 10.1 [7]   M☉
Radius 6.5 [8]   R☉
Luminosity 28,840 [9]   L☉
Surface gravity (log g)4.41 [10]   cgs
Temperature 32,870 [10]   K
Rotational velocity (v sin i)145 [10]  km/s
Age 22.5 [7]   Myr
Other designations
r Puppis, CD−35°4349, GC  11197, GSC  07133-04588, HIP  40274, HR  3237, HD  68980, SAO  198957
Database references
SIMBAD data

MX Puppis (MX Pup) is a class B1.5IV [3] (blue subgiant) star in the constellation Puppis. Its apparent magnitude varies irregularly between magnitude 4.6 and 4.9 and it is classified as a Gamma Cassiopeiae variable. [2] It is approximately 930 light years away based on parallax. [1]

MX Puppis was first found to be a variable star by Alan William James Cousins in 1959. [11] It was given its variable star designation in 1972. [12]

A light curve for MX Puppis, adapted from Hubert and Floquet (1998) MXPupLightCurve.png
A light curve for MX Puppis, adapted from Hubert and Floquet (1998)

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References

  1. 1 2 3 4 5 6 Van Leeuwen, F. (2007). "Validation of the new Hipparcos reduction". Astronomy and Astrophysics. 474 (2): 653–664. arXiv: 0708.1752 . Bibcode:2007A&A...474..653V. doi:10.1051/0004-6361:20078357. S2CID   18759600. Vizier catalog entry
  2. 1 2 3 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. 1 2 Slettebak, A. (1982). "Spectral types and rotational velocities of the brighter Be stars and A-F type shell stars". Astrophysical Journal Supplement Series. 50: 55. Bibcode:1982ApJS...50...55S. doi: 10.1086/190820 .
  4. 1 2 Ducati, J. R. (2002). "VizieR Online Data Catalog: Catalogue of Stellar Photometry in Johnson's 11-color system". CDS/ADC Collection of Electronic Catalogues. 2237. Bibcode:2002yCat.2237....0D.
  5. ↑ Gontcharov, G. A. (2006). "Pulkovo Compilation of Radial Velocities for 35 495 Hipparcos stars in a common system". Astronomy Letters. 32 (11): 759–771. arXiv: 1606.08053 . Bibcode:2006AstL...32..759G. doi:10.1134/S1063773706110065. S2CID   119231169.
  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. Vizier catalog entry
  7. 1 2 Tetzlaff, N.; Neuhäuser, R.; Hohle, M. M. (2011). "A catalogue of young runaway Hipparcos stars within 3 kpc from the Sun". Monthly Notices of the Royal Astronomical Society. 410 (1): 190–200. arXiv: 1007.4883 . Bibcode:2011MNRAS.410..190T. doi: 10.1111/j.1365-2966.2010.17434.x . S2CID   118629873. Vizier catalog entry
  8. ↑ 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.
  9. ↑ Balona, L. A.; Ozuyar, D. (2020). "Pulsation among TESS a and B stars and the Maia variables". Monthly Notices of the Royal Astronomical Society. 493 (4): 5871. arXiv: 2001.04497 . Bibcode:2020MNRAS.493.5871B. doi: 10.1093/mnras/staa670 . S2CID   210472317.
  10. 1 2 3 Zorec, J.; Frémat, Y.; Domiciano De Souza, A.; Royer, F.; Cidale, L.; Hubert, A.-M.; Semaan, T.; Martayan, C.; Cochetti, Y. R.; Arias, M. L.; Aidelman, Y.; Stee, P. (2016). "Critical study of the distribution of rotational velocities of Be stars". Astronomy & Astrophysics. 595: A132. Bibcode:2016A&A...595A.132Z. doi: 10.1051/0004-6361/201628760 . hdl: 11336/37946 .
  11. ↑ Cousins, A. W. J. (1959). "Measures of Bright Southern Stars on the UBV System". Monthly Notes of the Astron. Soc. Southern Africa. 18: 47. Bibcode:1959MNSSA..18...47C . Retrieved 10 October 2024.
  12. ↑ Kukarkin, B. V.; Kholopov, P. N.; Kukarkina, N. P.; Perova, N. B. (September 1972). "58th Name-List of Variable Stars" (PDF). Information Bulletin on Variable Stars. 717. Bibcode:1972IBVS..717....1K . Retrieved 10 October 2024.
  13. ↑ Hubert, A. M.; Floquet, M. (July 1998). "Investigation of the variability of bright Be stars using Hipparcos photometry". Astronomy and Astrophysics. 335: 565–572. Bibcode:1998A&A...335..565H . Retrieved 25 February 2022.


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