Stelle con insolite diminuzioni della luminosità
La seguente è una lista di stelle la cui luminosità diminuisce in modo insolito e non sono conosciute per essere stelle variabili.
Elenco
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
- ^ 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.
- ^ 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.
- ^ 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.
- ^ (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.
- ^ 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.
- ^ 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.
- ^ 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.
- ^ 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.
- ^ 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.
- ^ 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.
- ^ a b "EPIC 204376071". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved 6 March 2019.
- ^ 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.
- ^ a b c d "EPIC Search Results - EPIC 249706694". Space Telescope Science Institute. Retrieved 12 July 2019.
- ^ Mann, Adam (3 July 2019). "Astronomers Don't Know What to Make of This Incredibly Bizarre Star". Scientific American. Retrieved 3 July 2019.
- ^ 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.
- ^ "V582 Monocerotis". The International Variable Star Index. American Association of Variable Star Observers. Retrieved 29 June 2018.
- ^ 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.
- ^ 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.
- ^ 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.
- ^ a b HD 181469, in SIMBAD, Centre de données astronomiques de Strasbourg. URL consultato il 12 luglio 2019.
- ^ 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.
- ^ a b Masi, Gianluca (16 October 2015). "KIC 8462852: A star and its secrets". The Virtual Telescope Project 2.0. Retrieved 22 October 2015.
- ^ 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.
- ^ 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.
- ^ 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.
- ^ 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.
- ^ a b "V* RZ Psc". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved 22 December 2017.
- ^ 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.
- ^ 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.
- ^ a b c "WD 1145+017". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved 25 October 2015.
- ^ "Planet WD 1145+017 b". The Extrasolar Planet Encyclopedia. Retrieved 30 October 2015.
- ^ Pulliam, Christine (21 October 2015). "Cosmic "Death Star" is Destroying a Planet". Harvard-Smithsonian Center for Astrophysics. 2015–21.