fbpx
Wikipedia

DX Cancri

May 03, 2024

DX Cancri is a variable star in the northern zodiac constellation of Cancer. With an apparent visual magnitude of 14.81,[3] it is much too faint to be seen with the naked eye. Visually viewing this star requires a telescope with a minimum aperture of 16 in (41 cm).[14] Based upon parallax measurements, DX Cancri is located at a distance of 11.8 light-years (3.6 parsecs) from Earth. This makes it the 18th closest star (or star system) to the Sun.

DX Cancri

An ultraviolet band light curve for a flare on DX Cancri, adapted from Pettersen (1981)[1]
Observation data
Epoch J2000      Equinox J2000
Constellation Cancer
Right ascension 08h 29m 49.345s[2]
Declination +26° 46′ 33.74″[2]
Apparent magnitude (V) 14.81[3]
Characteristics
Spectral type M6.5V[4]
Apparent magnitude (J) 8.2[3]
U−B color index +2.11[5]
B−V color index +2.08[5]
Variable type Flare star[3]
Astrometry
Radial velocity (Rv)+9.0[6] km/s
Proper motion (μ) RA: −1,140[2] mas/yr
Dec.: −602[2] mas/yr
Parallax (π)279.2496 ± 0.0637 mas[7]
Distance11.680 ± 0.003 ly
(3.5810 ± 0.0008 pc)
Absolute magnitude (MV)16.98[8]
Details
Mass0.09[8] M☉
Radius0.11[9] R☉
Luminosity0.00065[10] L☉
Temperature2,840[11] K
Rotation0.46 days[9]
Rotational velocity (v sin i)11.0[12] km/s
Age200[13] Myr
Other designations
G 051-015, GCTP 2016.01, GJ 1111, LHS 248[3]
Database references
SIMBADdata
DX
Location of DX Cancri in the constellation Cancer

The star has a stellar classification of M6.5V,[4] identifying it as a type of main sequence star known as a red dwarf. It has about 9% of the mass of the Sun,[8] and 11% of the Sun's radius.[9] The outer envelope of the star has an effective temperature of 2,840 K,[11] making it an M-type star. It is a flare star that has random, intermittent increases in brightness by up to a factor of five. It is a proposed member of the Castor Moving Group of stars that share a common trajectory through space. This group has an estimated age of 200 million years.[15]


See also edit

References edit

  1. ^ Pettersen, B. R. (February 1981). "Discovery of flare activity on the very low luminosity red dwarf G 51-15". Astronomy & Astrophysics. 95: 135–137. Bibcode:1981A&A....95..135P. Retrieved 11 November 2021.
  2. ^ a b c d Zacharias, N.; et al. (2003). "The Second U.S. Naval Observatory CCD Astrograph Catalog (UCAC2)". VizieR Online Data Catalog. CDS/ADC Collection of Electronic Catalogues, 1289, 0 (2003). Bibcode:2003yCat.1289....0Z. Retrieved 2010-06-29.
  3. ^ a b c d e "V* DX Cnc -- Flare Star". SIMBAD. Centre de Données astronomiques de Strasbourg. Retrieved 2010-06-29.
  4. ^ a b Luhman, Kevin L.; Allers, Katelyn N.; Jaffe, Daniel T.; Cushing, Michael C.; Williams, Kurtis A.; Slesnick, Catherine L.; Vacca, William D. (April 2007), "Ophiuchus 1622-2405: Not a Planetary-Mass Binary", The Astrophysical Journal, 659 (2): 1629–1636, arXiv:astro-ph/0701242, Bibcode:2007ApJ...659.1629L, doi:10.1086/512539, S2CID 11153196
  5. ^ a b Weistrop, D. (August 1981). "The nature of the Giclas +4 stars". Astronomical Journal. 86: 1220–1227. Bibcode:1981AJ.....86.1220W. doi:10.1086/113001.
  6. ^ Montes, D.; et al. (November 2001). "Late-type members of young stellar kinematic groups - I. Single stars". Monthly Notices of the Royal Astronomical Society. 328 (1): 45–63. arXiv:astro-ph/0106537. Bibcode:2001MNRAS.328...45M. doi:10.1046/j.1365-8711.2001.04781.x. S2CID 55727428.
  7. ^ Brown, A. G. A.; et al. (Gaia collaboration) (2021). "Gaia Early Data Release 3: Summary of the contents and survey properties". Astronomy & Astrophysics. 649: A1. arXiv:2012.01533. Bibcode:2021A&A...649A...1G. doi:10.1051/0004-6361/202039657. S2CID 227254300. (Erratum: doi:10.1051/0004-6361/202039657e). Gaia EDR3 record for this source at VizieR.
  8. ^ a b c "The One Hundred Nearest Star Systems". RECONS. Georgia State University. January 1, 2009. Retrieved 2010-06-29.
  9. ^ a b c Morin, J.; et al. (October 2010), "Large-scale magnetic topologies of late M dwarfs", Monthly Notices of the Royal Astronomical Society, 407 (4): 2269–2286, arXiv:1005.5552, Bibcode:2010MNRAS.407.2269M, doi:10.1111/j.1365-2966.2010.17101.x, S2CID 119192200
  10. ^ Vidotto, A. A.; et al. (July 2013). "Effects of M dwarf magnetic fields on potentially habitable planets". Astronomy & Astrophysics. 557: A67. arXiv:1306.4789. Bibcode:2013A&A...557A..67V. doi:10.1051/0004-6361/201321504. S2CID 44335981.
  11. ^ a b Reiners, Ansgar; Basri, Gibor (February 2007). "The First Direct Measurements of Surface Magnetic Fields on Very Low Mass Stars". The Astrophysical Journal. 656 (2): 1121–1135. arXiv:astro-ph/0610365. Bibcode:2007ApJ...656.1121R. doi:10.1086/510304. S2CID 17743657.
  12. ^ Jenkins, J. S.; et al. (October 2009). "Rotational Velocities for M Dwarfs". The Astrophysical Journal. 704 (2): 975–988. arXiv:0908.4092. Bibcode:2009ApJ...704..975J. doi:10.1088/0004-637X/704/2/975. S2CID 119203469.
  13. ^ Lestrade, J.-F.; et al. (November 2009), "Search for cold debris disks around M-dwarfs. II", Astronomy and Astrophysics, 506 (3): 1455–1467, arXiv:0907.4782, Bibcode:2009A&A...506.1455L, doi:10.1051/0004-6361/200912306, S2CID 17035185
  14. ^ Sherrod, P. Clay; Koed, Thomas L. (2003), A Complete Manual of Amateur Astronomy: Tools and Techniques for Astronomical Observations, Astronomy Series, Courier Dover Publications, p. 9, ISBN 0486428206
  15. ^ Lestrade, J.-F.; et al. (December 2006), "Search for cold debris disks around M-dwarfs", Astronomy and Astrophysics, 460 (3): 733–741, arXiv:astro-ph/0609574, Bibcode:2006A&A...460..733L, doi:10.1051/0004-6361:20065873, S2CID 119328045

Further reading edit

  • Dittmann, Jason A.; Irwin, Jonathan M.; Charbonneau, David; Berta-Thompson, Zachory K. (2014). "Trigonometric Parallaxes for 1507 Nearby Mid-to-late M Dwarfs". The Astrophysical Journal. 784 (2): 156. arXiv:1312.3241. Bibcode:2014ApJ...784..156D. doi:10.1088/0004-637X/784/2/156. S2CID 18789867. Table with parallaxes.

External links edit

May 03, 2024
cancri, variable, star, northern, zodiac, constellation, cancer, with, apparent, visual, magnitude, much, faint, seen, with, naked, visually, viewing, this, star, requires, telescope, with, minimum, aperture, based, upon, parallax, measurements, located, dista. DX Cancri is a variable star in the northern zodiac constellation of Cancer With an apparent visual magnitude of 14 81 3 it is much too faint to be seen with the naked eye Visually viewing this star requires a telescope with a minimum aperture of 16 in 41 cm 14 Based upon parallax measurements DX Cancri is located at a distance of 11 8 light years 3 6 parsecs from Earth This makes it the 18th closest star or star system to the Sun DX CancriAn ultraviolet band light curve for a flare on DX Cancri adapted from Pettersen 1981 1 Observation dataEpoch J2000 Equinox J2000 Constellation Cancer Right ascension 08h 29m 49 345s 2 Declination 26 46 33 74 2 Apparent magnitude V 14 81 3 Characteristics Spectral type M6 5V 4 Apparent magnitude J 8 2 3 U B color index 2 11 5 B V color index 2 08 5 Variable type Flare star 3 AstrometryRadial velocity Rv 9 0 6 km sProper motion m RA 1 140 2 mas yr Dec 602 2 mas yrParallax p 279 2496 0 0637 mas 7 Distance11 680 0 003 ly 3 5810 0 0008 pc Absolute magnitude MV 16 98 8 DetailsMass0 09 8 M Radius0 11 9 R Luminosity0 00065 10 L Temperature2 840 11 KRotation0 46 days 9 Rotational velocity v sin i 11 0 12 km sAge200 13 Myr Other designationsG 051 015 GCTP 2016 01 GJ 1111 LHS 248 3 Database referencesSIMBADdata DXLocation of DX Cancri in the constellation Cancer The star has a stellar classification of M6 5V 4 identifying it as a type of main sequence star known as a red dwarf It has about 9 of the mass of the Sun 8 and 11 of the Sun s radius 9 The outer envelope of the star has an effective temperature of 2 840 K 11 making it an M type star It is a flare star that has random intermittent increases in brightness by up to a factor of five It is a proposed member of the Castor Moving Group of stars that share a common trajectory through space This group has an estimated age of 200 million years 15 See also editList of nearest stars and brown dwarfsReferences edit Pettersen B R February 1981 Discovery of flare activity on the very low luminosity red dwarf G 51 15 Astronomy amp Astrophysics 95 135 137 Bibcode 1981A amp A 95 135P Retrieved 11 November 2021 a b c d Zacharias N et al 2003 The Second U S Naval Observatory CCD Astrograph Catalog UCAC2 VizieR Online Data Catalog CDS ADC Collection of Electronic Catalogues 1289 0 2003 Bibcode 2003yCat 1289 0Z Retrieved 2010 06 29 a b c d e V DX Cnc Flare Star SIMBAD Centre de Donnees astronomiques de Strasbourg Retrieved 2010 06 29 a b Luhman Kevin L Allers Katelyn N Jaffe Daniel T Cushing Michael C Williams Kurtis A Slesnick Catherine L Vacca William D April 2007 Ophiuchus 1622 2405 Not a Planetary Mass Binary The Astrophysical Journal 659 2 1629 1636 arXiv astro ph 0701242 Bibcode 2007ApJ 659 1629L doi 10 1086 512539 S2CID 11153196 a b Weistrop D August 1981 The nature of the Giclas 4 stars Astronomical Journal 86 1220 1227 Bibcode 1981AJ 86 1220W doi 10 1086 113001 Montes D et al November 2001 Late type members of young stellar kinematic groups I Single stars Monthly Notices of the Royal Astronomical Society 328 1 45 63 arXiv astro ph 0106537 Bibcode 2001MNRAS 328 45M doi 10 1046 j 1365 8711 2001 04781 x S2CID 55727428 Brown A G A et al Gaia collaboration 2021 Gaia Early Data Release 3 Summary of the contents and survey properties Astronomy amp Astrophysics 649 A1 arXiv 2012 01533 Bibcode 2021A amp A 649A 1G doi 10 1051 0004 6361 202039657 S2CID 227254300 Erratum doi 10 1051 0004 6361 202039657e Gaia EDR3 record for this source at VizieR a b c The One Hundred Nearest Star Systems RECONS Georgia State University January 1 2009 Retrieved 2010 06 29 a b c Morin J et al October 2010 Large scale magnetic topologies of late M dwarfs Monthly Notices of the Royal Astronomical Society 407 4 2269 2286 arXiv 1005 5552 Bibcode 2010MNRAS 407 2269M doi 10 1111 j 1365 2966 2010 17101 x S2CID 119192200 Vidotto A A et al July 2013 Effects of M dwarf magnetic fields on potentially habitable planets Astronomy amp Astrophysics 557 A67 arXiv 1306 4789 Bibcode 2013A amp A 557A 67V doi 10 1051 0004 6361 201321504 S2CID 44335981 a b Reiners Ansgar Basri Gibor February 2007 The First Direct Measurements of Surface Magnetic Fields on Very Low Mass Stars The Astrophysical Journal 656 2 1121 1135 arXiv astro ph 0610365 Bibcode 2007ApJ 656 1121R doi 10 1086 510304 S2CID 17743657 Jenkins J S et al October 2009 Rotational Velocities for M Dwarfs The Astrophysical Journal 704 2 975 988 arXiv 0908 4092 Bibcode 2009ApJ 704 975J doi 10 1088 0004 637X 704 2 975 S2CID 119203469 Lestrade J F et al November 2009 Search for cold debris disks around M dwarfs II Astronomy and Astrophysics 506 3 1455 1467 arXiv 0907 4782 Bibcode 2009A amp A 506 1455L doi 10 1051 0004 6361 200912306 S2CID 17035185 Sherrod P Clay Koed Thomas L 2003 A Complete Manual of Amateur Astronomy Tools and Techniques for Astronomical Observations Astronomy Series Courier Dover Publications p 9 ISBN 0486428206 Lestrade J F et al December 2006 Search for cold debris disks around M dwarfs Astronomy and Astrophysics 460 3 733 741 arXiv astro ph 0609574 Bibcode 2006A amp A 460 733L doi 10 1051 0004 6361 20065873 S2CID 119328045Further reading editDittmann Jason A Irwin Jonathan M Charbonneau David Berta Thompson Zachory K 2014 Trigonometric Parallaxes for 1507 Nearby Mid to late M Dwarfs The Astrophysical Journal 784 2 156 arXiv 1312 3241 Bibcode 2014ApJ 784 156D doi 10 1088 0004 637X 784 2 156 S2CID 18789867 Table with parallaxes External links editSolStation entry ARICNS http www richweb f9 co uk astro nearby stars htm Retrieved from https en wikipedia org w index php title DX Cancri amp oldid 1154605931, wikipedia, wiki, book, books, library,

article

, read, download, free, free download, mp3, video, mp4, 3gp, jpg, jpeg, gif, png, picture, music, song, movie, book, game, games.