List of stars that have unusual dimming periods
Appearance
![](http://upload.wikimedia.org/wikipedia/commons/thumb/1/1f/PIA22081-KIC8462852-TabbysStar-UnevenDustRing-Illustration-20171004.png/300px-PIA22081-KIC8462852-TabbysStar-UnevenDustRing-Illustration-20171004.png)
This list of stars that have unusual dimming periods is a table of stars that have been observed to darken and brighten and do not appear to be eclipsing binaries or intrinsic variables. It is based on studies searching for analogs of Tabby's Star.[1][2]
The listing here is ordered alphabetically.
List
[edit]![](http://upload.wikimedia.org/wikipedia/commons/thumb/6/60/Consolidated_plot_of_KIC_8462852_dip_maxima_March_2020_update.png/900px-Consolidated_plot_of_KIC_8462852_dip_maxima_March_2020_update.png)
Tabby's Star (KIC 8462852) – Consolidated plot of all known dimmings (1 March 2020)
Star designation | Stellar class |
Magnitude | Right ascension (J2000) |
Declination (J2000) |
Distance (light-years) |
Reason for dimming | |
---|---|---|---|---|---|---|---|
Apparent | Absolute | ||||||
ASASSN-V J193622.23+115244.1 | — | 14.0–15.5[3] | — | 19h 36m 22.23s[3] | +11° 52′ 44.1″[3] | 6592[3] | Unknown |
ASASSN-V J213939.3-702817.4 | F0V[4] | 12.95–14.22[5] | 2.5[5] | 21h 39m 39.3s[5] | −70° 28′ 17.4″[5] | 3630[4] | Unknown |
Betelgeuse | M1-2[6] | +0.50[7] | — | 05h 55m 10.30536s[8] | +07° 24′ 25.4304″[8] | — | "large-grain circumstellar dust"[9][10] |
EPIC 204278916 | M1[11] | 13.7[12] | — | 16h 02m 07.576s[13] | −22° 57′ 46.89″[13] | — | Dust disk |
EPIC 204376071 | M[14] | — | — | 16h 04m 10.1267s[15] | −22° 34′ 45.5503″[15] | 440[14] | Possibly giant planet or brown dwarf with rings |
HD 139139 (EPIC 249706694) |
G3/5V | 9.84;[16] 9.677[17] | — | 15h 37m 06.215s[17] | −19° 08′ 32.96″[17] | 350[18] 572[17] |
Unknown |
KH 15D | K7[19] | 15.5–21.5[20] | 6.226[21] | 06h 41m 10.31s[22] | +09° 28′ 33.2″[22] | 773[23] | Possibly circumbinary disk |
KIC 4150611 (HD 181469) |
Pulsator/K/M/G | — | — | 19h 18m 58.21759s[24] | +39° 16′ 01.7913″[24] | — | Five-star system |
PDS 110 | keF6 IVeb[25] | 10.422[25] | 2.54[25] | 05h 23m 31.008s[25] | –01° 04′ 23.68″[25] | 1090[25] | Possibly eclipses by circumstellar dust[26] |
RW Cephei | K2 0-Ia[27] | 6.0–7.6[28] | — | 22h 23m 07.01521s[29] | +55° 57′ 47.6244″[29] | 11,000[30][a] | Great dimming event similar to Betelgeuse |
RZ Piscium | K0 IV[31] | 11.29–13.82[31] | — | 01h 09m 42.056s[32] | +27° 57′ 1.95″[32] | 550[33] | Substantial mass of gas and dust, possibly from disrupted planet |
Tabby's Star (KIC 8462852) |
F3V[34][35] | 11.705[35] | 3.08[34] | 20h 06m 15.4527s[34] | +44° 27′ 24.791″[34] | 1470[34] | Unknown |
TIC 400799224 | — | — | — | — | — | — | "probably from an orbiting body that periodically emits clouds of dust that occult the star"[36][37] |
V1400 Centauri | K5 IV(e) Li[38] | 12.31[38] | — | 14h 07m 47.93s[38] | −39° 45′ 42.7″[38] | 434[39] | Eclipse by a free-floating brown dwarf or rogue planet with a circumstellar disk or ring system[40] |
VVV-WIT-07 | — | 14.35–16.164[41] | — | 17h 26m 29.387s[41] | −35° 40′ 6.20″[41] | 23000/?[41] | Unknown |
VVV-WIT-08 | — | — | — | — | — | — | Probably a black hole companion or a free-floating brown dwarf with a circumstellar disk |
WD 1145+017 (EPIC 201563164) |
DB[42] | 17.0[43] | — | 11h 48m 33.63s[42] | +01° 28′ 59.4″[42] | 570[44] | Dust disk |
ZTF J0139+5245 (ZTF J013906.17+524536.89) |
DA[45] | 18.4[45] | — | 01h 39m 06.17s | +52° 45′ 36.89″ | 564[45] | Dust disk |
Gaia17bpp | M0-III | 16.13–20.48[46] | — | 19h 37m 23.16s | +17° 59′ 02.90″ | 27,600[47] | Dust disk |
Gaia21bcv | K4.5V | 17.70–20.12 | 3.2 | 07h 14m 33.276s | −12° 13′ 27.34″ | 4,508 | Eclipse by a substellar companion with a 0.5 AU-radius debris disk[48] |
ASASSN-21js | B[b] | 12.8 | 1.38 | 11h 47m 11.754s | −62° 10′ 36.80″ | 9,149 | Eclipse by a distant substellar companion with a 1.05 AU-radius debris disk[49] |
See also
[edit]Notes
[edit]- ^ Assuming membership to Cepheus OB1
- ^ ASASSN-21js's temperature of 14800+4200
−2800 K lies within the temperature range for B-type main-sequence stars.[49]
References
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- ^ Parker, Richard J.; Crowther, Paul A.; Rate, Gemma (2020). "Unlocking Galactic Wolf–Rayet stars with Gaia DR2 – II. Cluster and association membership". Monthly Notices of the Royal Astronomical Society. 495 (1): 1209–1226. arXiv:2005.02533. Bibcode:2020MNRAS.495.1209R. doi:10.1093/mnras/staa1290. S2CID 218516882.
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- ^ 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. S2CID 119068259.
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- ^ Hodapp, Klaus W.; Gaidos, Eric; Kenworthy, Matthew A.; Tucker, Michael; Shappee, Benjamin J.; Payne, Anna V.; et al. (March 2012). "An Episode of Occultation Events in Gaia21bcv". The Astronomical Journal. 167 (2): 10. arXiv:2312.16367. Bibcode:2024AJ....167...85H. doi:10.3847/1538-3881/ad1931. 85.
- ^ a b Pramono, T. H.; Kenworthy, M. A.; van Boekel, R. (August 2024). "ASASSN-21js: A multi-year transit of a ringed disc". Astronomy & Astrophysics. 688: 8. arXiv:2408.06744. Bibcode:2024A&A...688L..11P. doi:10.1051/0004-6361/202450288. L11.