Stelle con insolite diminuzioni della luminosità

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Rappresentazione artistica di un "anello di polvere irregolare" in orbita intorno a KIC 8462852, nota anche come Stella di Tabby.

La seguente è una lista di stelle la cui luminosità diminuisce in modo insolito e non sono conosciute per essere stelle variabili.

Elenco[modifica | modifica wikitesto]

KIC 8462852 (Stella di Tabby) - Andamento consolidato di tutti gli oscuramenti noti (21 maggio 2019)
Nome Classificazione stellare Magnitudine Ascensione retta

(J2000) 		Declinazione

(J2000) 		Distanza

(anni luce) 		Motivo dell'oscuramento
Apparente Assoluta
J1407 K5 IV(e) Li[1] 12.31[1] — 14h 07m 47.93s[1] −39° 45′ 42.7″[1] 434[2] Pianeta (J1407b) con un sistema di anelli giganti
ASASSN-21qj — g~13-8–16[3] 08h 15m 23,2996s[3] −38° 59′ 23,304″[3] 1810[3] Possibile scontro tra due pianeti ghiacciati in orbita attorno alla stella[4]
ASASSN-V J213939.3-702817.4 F0V[5] g~12.95–14.22[6] 2.5[6] 21h 39m 39.3s[6] −70° 28′ 17.4″[6] 3630[5] Sconosciuto
EPIC 204278916 M1[7] 13.7[8] — 16h 02m 07.576s[9] −22° 57′ 46.89″[9] — Disco di polveri
EPIC 204376071 M[10] — — 16h 04m 10.1267s[11] −22° 34′ 45.5503″[11] 440[10] Possibile pianeta gigante o nana bruna con anelli
HD 139139
(EPIC 249706694) 		G3/5V 9.84;[12] 9.677[13] — 15h 37m 06.215s[13] −19° 08′ 32.96″[13] 350[14]

175,5 parsec (572 al)[13] 		Sconosciuto
KH 15D K7[15] 15.5–21.5[16] 6.226[17] 06h 41m 10.31s[18] +09° 28′ 33.2″[18] 773[19] Sistema doppio in cui le due stelle sono, alternativamente, entrambe e nessuna, occultate da uno spesso disco circumbinario
KIC 4150611
(HD 181469) 		Pulsator/K/M/G — — 19h 18m 58.21759s[20] +39° 16′ 01.7913″[20] — Sistema a cinque stelle
KIC 8462852
(Stella di Tabby) 		F3V[21][22] 11.705[22] 3.08[21] 20h 06m 15.4527s[21] +44° 27′ 24.791″[21] 1470[21] Sconosciuto
PDS 110 keF6 IVeb[23] 10.422[23] 2.54[23] 05h 23m 31.008s[23] −01° 04′ 23.68″[23] 1090[23] Possibile pianeta gigante o nana bruna con disco di polveri
Stella di Przybylski (HD 101065) F3 Ho[24] 7.996–8.020[25] — 11h 37m 37.04110s[26] −46° 42′ 34.8754″[26] 355 Lantanoidi da 1000 a 10000 volte più abbondanti del Sole
RZ Piscium K0 IV[25] 11.29–13.82[25] — 01h 09m 42.056s[27] +27° 57′ 1.95″[27] 550[28] Considerevole massa di gas e polveri, probabilmente provenienti da un pianeta distrutto
VVV-WIT-07 — 14.35–16.164[29] — 17h 26m 29.387s[29] −35° 40′ 6.20″[29] 23000/?[29] Sconosciuto
WD 1145+017
(EPIC 201563164) 		DB[30] 17.0[31] — 11h 48m 33.63s[30] +01° 28′ 59.4″[30] 570[32] Disco di polveri e residuo di un pianeta con i suoi frammenti distrutto dalla sua stella.
T Ursae Minoris M4e-M6e 11,46 — 13h 34m 41.120s +73° 25′ 52.99″ 3000 Possibile flash dell'elio

Note[modifica | modifica wikitesto]

  1. ^ a b c d Mamajek, Eric E.; et al. (March 2012). "Planetary Construction Zones in Occultation: Discovery of an Extrasolar Ring System Transiting a Young Sun-like Star and Future Prospects for Detecting Eclipses by Circumsecondary and Circumplanetary Disks". The Astronomical Journal. 143 (3): 72. arXiv:1108.4070. Bibcode:2012AJ....143...72M. doi:10.1088/0004-6256/143/3/72.
  2. ^ Kenworthy, Matthew A. & Mamajek, Eric E. (22 January 2015). "Modeling giant extrasolar ring systems in eclipse and the case of J1407b: sculpting by exomoons?". The Astrophysical Journal. 800 (2): 126. arXiv:1501.05652. Bibcode:2015ApJ...800..126K. doi:10.1088/0004-637X/800/2/126.
  3. ^ a b c d ATel #14879: ASASSN-21qj: A Rapidly Fading, Sun-Like Star, su The Astronomer's Telegram. URL consultato il 4 novembre 2023.
  4. ^ (EN) Matthew Kenworthy, Simon Lock e Grant Kennedy, A planetary collision afterglow and transit of the resultant debris cloud, in Nature, vol. 622, n. 7982, 2023-10, pp. 251–254, DOI:10.1038/s41586-023-06573-9. URL consultato il 4 novembre 2023.
  5. ^ a b McCollum, B. & Laine, S. (8 June 2019). "Spectral Type of the Unusual Variable ASASSN-V J213939.3-702817.4". The Astronomer's Telegram. Retrieved 8 June 2019.
  6. ^ a b c d Jayasinghe, T.; et al. (4 June 2019). "ASAS-SN Discovery of an Unusual, Deep Dimming Episode of a Previously Non-Variable Star". The Astronomer's Telegram. Retrieved 8 June 2019.
  7. ^ Bouy, H. & Martín, E. L. (September 2009). "Proper motions of cool and ultracool candidate members in the Upper Scorpius OB association". Astronomy and Astrophysics. 504 (3): 981–990. arXiv:0907.0149. Bibcode:2009A&A...504..981B. doi:10.1051/0004-6361/200811088.
  8. ^ Preibisch, Thomas; et al. (July 2002). "Exploring the Full Stellar Population of the Upper Scorpius OB Association". The Astronomical Journal. 124 (1): 404–416. Bibcode:2002AJ....124..404P. doi:10.1086/341174.
  9. ^ a b Zacharias, N.; et al. (2003). "VizieR Online Data Catalog: The Second U.S. Naval Observatory CCD Astrograph Catalog (UCAC2)". CDS/ADC Collection of Electronic Catalogues (1289). Bibcode:2003yCat.1289....0Z.
  10. ^ a b Rappaport, S.; et al. (May 2019). "Deep Long Asymmetric Occultation in EPIC 204376071" (PDF). Monthly Notices of the Royal Astronomical Society. 485 (2): 2681–2693. arXiv:1902.08152. Bibcode:2019MNRAS.485.2681R. doi:10.1093/mnras/stz537.
  11. ^ a b "EPIC 204376071". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved 6 March 2019.
  12. ^ Høg, E.; et al. (March 2000). "The Tycho-2 catalogue of the 2.5 million brightest stars". Astronomy and Astrophysics. 355: L27–L30. Bibcode:2000A&A...355L..27H.
  13. ^ a b c d "EPIC Search Results - EPIC 249706694". Space Telescope Science Institute. Retrieved 12 July 2019.
  14. ^ Mann, Adam (3 July 2019). "Astronomers Don't Know What to Make of This Incredibly Bizarre Star". Scientific American. Retrieved 3 July 2019.
  15. ^ Hamilton, Catrina M.; et al. (2001). "Eclipses by a Circumstellar Dust Feature in the Pre-main-Sequence Star KH 15D". The Astronomical Journal. 554 (2): L201–L204. arXiv:astro-ph/0105412. Bibcode:2001ApJ...554L.201H. doi:10.1086/321707.
  16. ^ "V582 Monocerotis". The International Variable Star Index. American Association of Variable Star Observers. Retrieved 29 June 2018.
  17. ^ Aronow, Rachel A.; et al. (2018). "Optical and Radio Observations of the T Tauri Binary KH 15D (V582 Mon): Stellar Properties, Disk Mass Limit, and Discovery of a CO Outflow". The Astronomical Journal. 155 (1): 47. arXiv:1711.11434. Bibcode:2018AJ....155...47A. doi:10.3847/1538-3881/aa9ed7.
  18. ^ a b Dahm, S. E. & Simon, Theodore (February 2005). "The T Tauri Star Population of the Young Cluster NGC 2264". The Astronomical Journal. 129 (2): 829–855. Bibcode:2005AJ....129..829D. doi:10.1086/426326.
  19. ^ Bailer-Jones, C. A. L.; et al. (August 2018). "Estimating distances from parallaxes IV: Distances to 1.33 billion stars in Gaia Data Release 2". The Astronomical Journal. 156 (2). 58. arXiv:1804.10121. Bibcode:2018AJ....156...58B. doi:10.3847/1538-3881/aacb21.
  20. ^ a b HD 181469, in SIMBAD, Centre de données astronomiques de Strasbourg. URL consultato il 12 luglio 2019.
  21. ^ a b c d e Boyajian, T. S.; et al. (April 2016). "Planet Hunters IX. KIC 8462852 – where's the flux?". Monthly Notices of the Royal Astronomical Society. 457 (4): 3988–4004. arXiv:1509.03622. Bibcode:2016MNRAS.457.3988B. doi:10.1093/mnras/stw218.
  22. ^ a b Masi, Gianluca (16 October 2015). "KIC 8462852: A star and its secrets". The Virtual Telescope Project 2.0. Retrieved 22 October 2015.
  23. ^ a b c d e f Osborn, H. P.; et al. (October 2017). "Periodic Eclipses of the Young Star PDS 110 Discovered with WASP and KELT Photometry". Monthly Notices of the Royal Astronomical Society. 471 (1): 740–749. arXiv:1705.10346. Bibcode:2017MNRAS.471..740O. doi:10.1093/mnras/stx1249.
  24. ^ Renson, P. & Manfroid, J. (May 2009). "Catalogue of Ap, HgMn and Am stars". Astronomy and Astrophysics. 498 (3): 961–966. Bibcode:2009A&A...498..961R. doi:10.1051/0004-6361/200810788.
  25. ^ a b c Samus, N. N.; et al. (2009). "VizieR Online Data Catalog: General Catalogue of Variable Stars (Samus+ 2007-2013)". VizieR On-line Data Catalog. Bibcode:2009yCat....102025S.
  26. ^ a b Brown, A. G. A.; et al. (Gaia collaboration) (August 2018). "Gaia Data Release 2: Summary of the contents and survey properties". Astronomy & Astrophysics. 616. A1. arXiv:1804.09365. Bibcode:2018A&A...616A...1G. doi:10.1051/0004-6361/201833051. 5372587514128271232 Gaia DR2 record for this source at VizieR.
  27. ^ a b "V* RZ Psc". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved 22 December 2017.
  28. ^ Paez, Danny (21 December 2017). "This "Winking" Star is So Hungry it's Feasting on Planets - An appetite of galactic proportions". Inverse innovation. Retrieved 21 December 2017.
  29. ^ a b c d Saito, Roberto K.; et al. (6 November 2018). "VVV-WIT-07: another Boyajian's star or a Mamajek's object?". Monthly Notices of the Royal Astronomical Society. 482 (4): 5000–5006. arXiv:1811.02265. Bibcode:2019MNRAS.482.5000S. doi:10.1093/mnras/sty3004.
  30. ^ a b c "WD 1145+017". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved 25 October 2015.
  31. ^ "Planet WD 1145+017 b". The Extrasolar Planet Encyclopedia. Retrieved 30 October 2015.
  32. ^ Pulliam, Christine (21 October 2015). "Cosmic "Death Star" is Destroying a Planet". Harvard-Smithsonian Center for Astrophysics. 2015–21.

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