Mx Puppis

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Short description: Star in the constellation Puppis
MX Puppis
Puppis constellation map.svg
Red circle.svg
Location of MX Puppis (circled)
Observation data
Equinox J2000.0]] (ICRS)
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[1] mas
Distance930 ± 40 ly
(280 ± 10 pc)
Absolute magnitude (MV)-2.97[6]
Details
Mass10.1[7] M☉
Luminosity13276[8] L☉
Surface gravity (log g)4.41[9] cgs
Temperature32,870[9] K
Rotational velocity (v sin i)145[9] km/s
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]

A light curve for MX Puppis, adapted from Hubert and Floquet (1998)[10]

It is a γ Cas variable, ranging from 4.92 to 4.60 magnitude.[2]

References

  1. ↑ 1.0 1.1 1.2 1.3 1.4 1.5 Van Leeuwen, F. (2007). "Validation of the new Hipparcos reduction". Astronomy and Astrophysics 474 (2): 653–664. doi:10.1051/0004-6361:20078357. Bibcode: 2007A&A...474..653V.  Vizier catalog entry
  2. ↑ 2.0 2.1 2.2 2.3 Samus, N. N. 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. ↑ 3.0 3.1 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. doi:10.1086/190820. Bibcode: 1982ApJS...50...55S. 
  4. ↑ 4.0 4.1 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. doi:10.1134/S1063773706110065. Bibcode: 2006AstL...32..759G. 
  6. ↑ Anderson, E.; Francis, Ch. (2012). "XHIP: An extended hipparcos compilation". Astronomy Letters 38 (5): 331. doi:10.1134/S1063773712050015. Bibcode: 2012AstL...38..331A.  Vizier catalog entry
  7. ↑ 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. doi:10.1111/j.1365-2966.2010.17434.x. Bibcode: 2011MNRAS.410..190T.  Vizier catalog entry
  8. ↑ Hohle, M.M.; Neuhäuser, R.; Schutz, B.F. (2010). "Masses and luminosities of O- and B-type stars and red supergiants". Astronomische Nachrichten 331 (4): 349. doi:10.1002/asna.200911355. Bibcode: 2010AN....331..349H.  Vizier catalog entry
  9. ↑ 9.0 9.1 9.2 Zorec, J.; Frémat, Y.; Domiciano De Souza, A.; Royer, F.; Cidale, L.; Hubert, A.-M.; Semaan, T.; Martayan, C. et al. (2016). "Critical study of the distribution of rotational velocities of Be stars". Astronomy & Astrophysics 595: A132. doi:10.1051/0004-6361/201628760. Bibcode: 2016A&A...595A.132Z. 
  10. ↑ 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. https://ui.adsabs.harvard.edu/abs/1998A&A...335..565H. Retrieved 25 February 2022. 




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Categories: [Puppis] [B-type subgiants] [Be stars] [Objects with variable star designations] [Gamma Cassiopeiae variable stars] [Durchmusterung objects] [Henry Draper Catalogue objects] [Hipparcos objects] [Bayer objects]

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