MX Puppis

Not to be confused with R Puppis or Rho Puppis.
MX Puppis
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]
Distance930 ± 40 ly
(280 ± 10 pc)
Absolute magnitude (MV)−2.97[6]
Details
Mass10.1[7] M☉
Radius6.5[8] R☉
Luminosity28,840[9] L☉
Surface gravity (log g)4.41[10] cgs
Temperature32,870[10] K
Rotational velocity (v sin i)145[10] km/s
Age22.5[7] Myr
Other designations
r Puppis, CD−35°4349, GC 11197, GSC 07133-04588, HIP 40274, HR 3237, HD 68980, SAO 198957
Database references
SIMBADdata

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)[13]
  1. ^ a b c d e f 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. ^ a b c 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 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. ^ a b 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. ^ a b 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. ^ a b c 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. ^ Cite error: The named reference Cousins was invoked but never defined (see the help page).
  12. ^ Cite error: The named reference Kukarkin was invoked but never defined (see the help page).
  13. ^ Cite error: The named reference Hubert1998 was invoked but never defined (see the help page).