Astronomy:PV Cephei

From HandWiki
Short description: Star in the constellation Cepheus

Coordinates: Sky map 20h 45m 53.943s, +67° 57′ 38.66″

PV Cephei
300px
PV Cep is the bright spot located at the edge of Gyulbudaghian’s Nebula
Credit: ESA/Hubble & NASA. Acknowledgement: Alexey Romashin
Observation data
Equinox J2000.0]] (ICRS)
Constellation Cepheus[1]
Right ascension  20h 45m 53.943s[2]
Declination +67° 57′ 38.66″[2]
Apparent magnitude (V) 14.58 - 18.08[3]
Characteristics
Spectral type A5Ve[4]
Variable type T Tau[5]
Astrometry
Proper motion (μ) RA: 8.228[6] mas/yr
Dec.: −1.976[6] mas/yr
Parallax (π)2.9100 ± 0.0593[6] mas
Distance1,120 ± 20 ly
(344 ± 7 pc)
Details
Mass2.6[7] M☉
Radius2.9[7] R☉
Luminosity1[8] - 100[3] L☉
Temperature8,150[8] K
Age<1[3] Myr
Database references
SIMBADdata

PV Cephei is a variable star of Orion type located in the constellation of Cepheus at a distance of about 1,100 light-years from Earth.[9] In visible light it varies in brightness from magnitude 17 to 19, making it far too faint to be seen by the naked eye.[10]

A red band light curve for PV Cephei, adapted from Lorenzetti et al. (2011)[10]

PV Cephei's variability was first detected by Martin Cohen, Leonard Vello Kuhi and Eugene A. Harlan, and was announced in 1977.[11] It was given its variable star designation in 1978.[12] The star is embedded within Gyulbudaghian's Nebula, a reflection nebula. As the star's brightness changes, the nebula's shape changes dramatically.[11][13]

References

  1. ↑ "A changing fan". ESA/Hubble Picture of the Week. http://www.spacetelescope.org/images/potw1316a/. Retrieved 23 April 2013. 
  2. ↑ 2.0 2.1 Cutri, Roc M.; Skrutskie, Michael F.; Van Dyk, Schuyler D.; Beichman, Charles A.; Carpenter, John M.; Chester, Thomas; Cambresy, Laurent; Evans, Tracey E. et al. (2003). "VizieR Online Data Catalog: 2MASS All-Sky Catalog of Point Sources (Cutri+ 2003)". CDS/ADC Collection of Electronic Catalogues 2246: II/246. Bibcode: 2003yCat.2246....0C. http://vizier.u-strasbg.fr/viz-bin/VizieR?-source=II/246. 
  3. ↑ 3.0 3.1 3.2 Kun, M.; Szegedi-Elek, E.; Moór, A.; Kóspál, Á.; Ábrahám, P.; Apai, D.; Kiss, Z. T.; Klagyivik, P. et al. (2011). "Inner disc rearrangement revealed by dramatic brightness variations in the young star PV Cep". Monthly Notices of the Royal Astronomical Society 413 (4): 2689. doi:10.1111/j.1365-2966.2011.18341.x. Bibcode: 2011MNRAS.413.2689K. 
  4. ↑ Watson, C. L. (2006). "The International Variable Star Index (VSX)". The Society for Astronomical Sciences 25th Annual Symposium on Telescope Science. Held May 23–25 25: 47. Bibcode: 2006SASS...25...47W. 
  5. ↑ 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. 
  6. ↑ 6.0 6.1 6.2 Brown, A. G. A. (August 2018). "Gaia Data Release 2: Summary of the contents and survey properties". Astronomy & Astrophysics 616: A1. doi:10.1051/0004-6361/201833051. Bibcode: 2018A&A...616A...1G.  Gaia DR2 record for this source at VizieR.
  7. ↑ 7.0 7.1 Caratti o Garatti, A.; Garcia Lopez, R.; Weigelt, G.; Tambovtseva, L. V.; Grinin, V. P.; Wheelwright, H.; Ilee, J. D. (2013). "LBT/LUCIFER near-infrared spectroscopy of PV Cephei. An outbursting young stellar object with an asymmetric jet". Astronomy and Astrophysics 554: A66. doi:10.1051/0004-6361/201321418. Bibcode: 2013A&A...554A..66C. 
  8. ↑ 8.0 8.1 Vioque, M.; Oudmaijer, R. D.; Baines, D.; Mendigutía, I.; Pérez-Martínez, R. (2018). "Gaia DR2 study of Herbig Ae/Be stars". Astronomy and Astrophysics 620: A128. doi:10.1051/0004-6361/201832870. Bibcode: 2018A&A...620A.128V. 
  9. ↑ Saha, p.; Maheswar, G.; Mathew, B.; Kamath, U. S. (September 2021). "Star formation around three co-moving HAeBe stars in the Cepheus Flare". Astronomy & Astrophysics 653: A142. doi:10.1051/0004-6361/202039646. Bibcode: 2021A&A...653A.142S. https://ui.adsabs.harvard.edu/abs/2021A%26A...653A.142S/abstract. Retrieved 27 October 2024. 
  10. ↑ 10.0 10.1 Lorenzetti, D.; Giannini, T.; Larionov, V. M.; Arkharov, A. A.; Antoniucci, S.; Di Paola, A.; Konstantinova, T. S.; Kopatskaya, E. N. et al. (May 2011). "Simultaneous monitoring of the photometric and polarimetric activity of the young star PV Cep in the optical/near-infrared bands". The Astrophysical Journal 732 (2): 69. doi:10.1088/0004-637X/732/2/69. Bibcode: 2011ApJ...732...69L. https://ui.adsabs.harvard.edu/abs/2011ApJ...732...69L. Retrieved 6 December 2021. 
  11. ↑ 11.0 11.1 Cohen, M.; Kuhi, L. V.; Harlan, E. A. (August 1977). "A remarkable structural change in a faint cometary nebula". Astrophysical Journal 215: L127-L129. doi:10.1086/182494. Bibcode: 1977ApJ...215L.127C. https://articles.adsabs.harvard.edu/pdf/1977ApJ...215L.127C. Retrieved 13 October 2024. 
  12. ↑ Kholopov, P. N.; Kukarkina, N. P.; Perova, N. B. (April 1978). "63rd Name-List of Variable Stars". Information Bulletin on Variable Stars 1414. Bibcode: 1978IBVS.1414....1K. https://ibvs.konkoly.hu/pub/ibvs/1401/1414.pdf. Retrieved 13 October 2024. 
  13. ↑ Harrington, Phil. "Gyulbudaghian’s Nebula". Firecrown Media. https://www.astronomy.com/science/gyulbudaghians-nebula/. 




Retrieved from "https://handwiki.org/wiki/index.php?title=Astronomy:PV_Cephei&oldid=3927382"