HL Tau 76

Not to be confused with HL Tauri.
HL Tau 76

A white-light light curve light curve for HL Tau 76, adapted from Warner and Nather (1972)[1]
Observation data
Epoch J2000.0      Equinox J2000.0 (ICRS)
Constellation Taurus
Right ascension 04h 18m 56.638s[2]
Declination +27° 17′ 48.31″[2]
Apparent magnitude (V) 14.1–15.28[3]
Characteristics
Spectral type DA4.3[4]
B−V color index 0.2[5]
Variable type DAV (ZZ Ceti)[3]
Astrometry
Proper motion (μ) RA: 62.600[2] mas/yr
Dec.: −72.819[2] mas/yr
Parallax (π)20.7244 ± 0.0338 mas[2]
Distance157.4 ± 0.3 ly
(48.25 ± 0.08 pc)
Absolute magnitude (MV)11.69[4]
Details
Mass0.575±0.005[6] M☉
Radius0.0162[6] R☉
Luminosity0.00389[6] L☉
Surface gravity (log g)7.8[7] cgs
Temperature11,375±30[6] K
Other designations
EGGR 265, V411 Tau, WD 0416+272[5]
Database references
SIMBADdata

HL Tau 76 is a variable white dwarf star of the DAV (or ZZ Ceti) type. It was observed by G. Haro and W. J. Luyten in 1961,[8][9] and was the first variable white dwarf discovered when, in 1968, Arlo U. Landolt found that it varied in brightness with a period of approximately 749.5 seconds, or 12.5 minutes.[9] Like other DAV white dwarfs, its variability arises from non-radial gravity wave pulsations within itself.[10], § 7. Later observation and analysis has found HL Tau 76 to pulsate in over 40 independent vibrational modes, with periods between 380 seconds and 1390 seconds.[11]

The designation HL Tau 76 derives from the discovery of this star as a white dwarf, when it was described as Taurus no.76 in a publication authored by Guillermo Haro and Willem Jacob Luyten.[8] The exact designation HL Tau 76 was then used in subsequent papers, including one giving the star its designation EGGR 265 where it was noted to be variable.[12] It was then included in the 57th name-list of variable stars and given the variable star designation V441 Tauri.[13] The unusual designation HL Tau 76 continues to be used by most authors.[14]

Notes and references

  1. ^ Warner, Brian; Nather, R. Edward (January 1972). "Observations of rapid blue variables-III. HL Tau-76". Monthly Notices of the Royal Astronomical Society. 156: 1–5. Bibcode:1972MNRAS.156....1W. doi:10.1093/mnras/156.1.1.
  2. ^ a b c d e 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.
  3. ^ a b Combined General Catalogue of Variable Stars (GCVS), v. 4.2. CDS ID II/250.
  4. ^ a b Gianninas, A.; Bergeron, P.; Ruiz, M. T. (2011). "A Spectroscopic Survey and Analysis of Bright, Hydrogen-rich White Dwarfs". The Astrophysical Journal. 743 (2): 138. arXiv:1109.3171. Bibcode:2011ApJ...743..138G. doi:10.1088/0004-637X/743/2/138. S2CID 119210906.
  5. ^ a b "HL Tau 76". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved June 12, 2007.
  6. ^ a b c d Pech, D.; Vauclair, G.; Dolez, N. (2006). "Asteroseismological constraints on the structure of the ZZ Ceti star HL Tau 76". Astronomy and Astrophysics. 446 (1): 223. Bibcode:2006A&A...446..223P. doi:10.1051/0004-6361:20053150.
  7. ^ Gentile Fusillo, N. P.; Tremblay, P. -E.; Cukanovaite, E.; Vorontseva, A.; Lallement, R.; Hollands, M.; Gänsicke, B. T.; Burdge, K. B.; McCleery, J.; Jordan, S. (2021). "A catalogue of white dwarfs in Gaia EDR3". Monthly Notices of the Royal Astronomical Society. 508 (3): 3877. arXiv:2106.07669. Bibcode:2021MNRAS.508.3877G. doi:10.1093/mnras/stab2672.
  8. ^ a b Haro, G.; Luyten, W. J. (1961). "Nueva estrella enana blanca en las nubes obscuras del Toro". Boletín de los Observatorios de Tonantzintla y Tacubaya. 3: 35. Bibcode:1961BOTT....3...35H.
  9. ^ a b Landolt, Arlo U. (1968). "A New Short-Period Blue Variable". The Astrophysical Journal. 153: 151. Bibcode:1968ApJ...153..151L. doi:10.1086/149645.
  10. ^ Koester, D.; Chanmugam, G. (1990). "Physics of white dwarf stars". Reports on Progress in Physics. 53 (7): 837. Bibcode:1990RPPh...53..837K. doi:10.1088/0034-4885/53/7/001. S2CID 250915046.
  11. ^ Dolez, N.; et al. (2006). "Whole Earth telescope observations of the ZZ Ceti star HL Tau 76" (PDF). Astronomy and Astrophysics. 446 (1): 237. Bibcode:2006A&A...446..237D. doi:10.1051/0004-6361:20053149.
  12. ^ Greenstein, Jesse L. (October 1969). "The Lowell Suspect White Dwarfs". Astrophysical Journal. 158: 281. Bibcode:1969ApJ...158..281G. doi:10.1086/150191.
  13. ^ Kukarkin, B. V.; et al. (October 1970). "57th Name-List of Variable Stars". Information Bulletin on Variable Stars. 480 (1): 1. Bibcode:1970IBVS..480....1K.
  14. ^ Chen, Y. H.; Shu, H. (January 2021). "Asteroseismology of the DAV star R808". Monthly Notices of the Royal Astronomical Society. 500 (4): 4703–4709. arXiv:2011.06918. Bibcode:2021MNRAS.500.4703C. doi:10.1093/mnras/staa3572.

Read other articles:

Teachings of Joseph Smith

Doctrinal teachings of Latter Day Saint movement founder Joseph Smith This article is about the doctrinal teachings of Joseph Smith. For the 1938 book, see Teachings of the Prophet Joseph Smith (book). The teachings of Joseph Smith include a broad spectrum of religious doctrines as well as political and scientific ideas and theories, many of which he said were revealed to him by God. Joseph Smith is the founder of the Latter Day Saint movement and is recognized by multiple Latter Day Saint ch...

 

 

Alkaloid 10-Hidroksi Lycopodium

Artikel ini sebatang kara, artinya tidak ada artikel lain yang memiliki pranala balik ke halaman ini.Bantulah menambah pranala ke artikel ini dari artikel yang berhubungan atau coba peralatan pencari pranala.Tag ini diberikan pada Oktober 2022. Alkaloid 10-hidroksi Lycopodium, yang meliputi 10-hidroksilikopodina, deasetilpanikulina, dan panikulina, adalah serangkaian produk alami yang diisolasi dari tumbuhan paku Chili Lycopodium confertum. Deasetilpanikulina dan panikulina juga dapat diisola...

 

 

Aunt Virginia

2023 Brazilian filmAunt VirginiaPromotional release posterDirected byFabio MeiraWritten byFabio MeiraProduced byJanaina Diniz GuerraFabio MeiraStarringVera HoltzCinematographyLeonardo FelicianoEdited byKaren AkermanMusic byCesar Camargo MarianoProductioncompaniesRoseira FilmesKinossaurusRelease dateAugust 13, 2023 (Gramado)Running time98 minutesCountryBrazilLanguagePortuguese Aunt Virginia (Portuguese: Tia Virgínia) is a 2023 Brazilian comedy-drama film written, directed and co-produced by F...

Anak-Anak Manusia

Anak-Anak ManusiaGenre Religi Drama Komedi Skenario Relita Mahdayani Yeri Hermanto Cerita Relita Mahdayani Yeri Hermanto SutradaraAgus EliasPemeran Teddy Syach Primus Yustisio Devi Permatasari Jihan Fahira Eddie Riwanto Penggubah lagu temaWaliLagu pembukaStatus Hamba oleh WaliLagu penutupStatus Hamba oleh WaliNegara asalIndonesiaBahasa asliBahasa IndonesiaJmlh. musim1Jmlh. episode474ProduksiProduser eksekutifElly Yanti NoorProduserLeo SutantoPengaturan kameraMulti-kameraRumah produksiSinemAr...

 

 

Paléoprotéomique

PaléoprotéomiqueUne chronologie des principales analyses de protéines anciennes depuis les années 1950.Partie de Protéinemodifier - modifier le code - modifier Wikidata La paléoprotéomique est l'application de la protéomique (l'analyse des ensembles de protéines) aux matériaux anciens. Les protéomes anciens peuvent être trouvés dans des fossiles, des sédiments[1],[2], etc. Les protéines apportent moins d'informations que l'ADN, mais présentent l'avantage de se conserver potent...

 

 

Deputy Prime Minister of Malaysia

Second-highest political office in Malaysia Deputy Prime Minister of MalaysiaTimbalan Perdana Menteri Malaysia تيمبلن ڤردان منتري مليسيا‎Coat of arms of Malaysia IncumbentAhmad Zahid HamidiFadillah Yusofsince 3 December 2022Government of MalaysiaStyleDeputy Prime Minister(informal)Yang Amat Berhormat(formal)The Right Honourable(within the Commonwealth)His Excellency(diplomatic)Member ofCabinetNational Security CouncilHouse of RepresentativesReports toParliamen...

Giovanni Baldelli

Italian anarchist (1914–1986) Part of a series onAnarchism History Outline Schools of thought Feminist Green Primitivist Social ecology Total liberation Individualist Egoist Free-market Naturist Philosophical Mutualism Postcolonial African Black Queer Religious Christian Jewish Social Collectivist Parecon Communist Magonism Without adjectives Methodology Agorism Illegalism Insurrectionary Communization Expropriative Pacifist Platformism Especifismo Relationship Syndicalist Synthesis Theory ...

 

 

Poncha

Traditional alcoholic drink from Madeira This article includes a list of references, related reading, or external links, but its sources remain unclear because it lacks inline citations. Please help improve this article by introducing more precise citations. (September 2012) (Learn how and when to remove this template message) PonchaCocktailPonchaTypeCocktailServedOn the rocks: poured over iceStandard garnishsugar cane, lime (ingredient)Standard drinkware Old fashioned glassCommonly used ingr...

 

 

Childhood in ancient Rome

Children of ancient Rome Childbirth in ancient Rome was dangerous for both the mother and the child. Mothers usually would rely on religious superstition to avoid death. Certain customs such as lying in bed after childbirth and using plants and herbs as relief were also practiced. Midwives assisted the mothers in birth. Once children were born they wouldn’t be given a name until 8 or 9 days after their birth. The number depended on if they were male or female. Once the days had passed, the ...

Réserve écologique Jackrabbit

Pour les articles homonymes, voir Jackrabbit. Cet article est une ébauche concernant les Laurentides et les réserves naturelles et autres zones protégées. Vous pouvez partager vos connaissances en l’améliorant (comment ?) selon les recommandations des projets correspondants. Réserve écologique JackrabbitGéographiePays  CanadaProvince QuébecRégion administrative LaurentidesMunicipalité régionale Les LaurentidesMunicipalité MontcalmCoordonnées 46° 00′ 25�...

 

 

بوب جونستون

  لمعانٍ أخرى، طالع بوب جونستون (توضيح). هذه المقالة يتيمة إذ تصل إليها مقالات أخرى قليلة جدًا. فضلًا، ساعد بإضافة وصلة إليها في مقالات متعلقة بها. (أبريل 2019) بوب جونستون معلومات شخصية تاريخ الميلاد 22 سبتمبر 1916   تاريخ الوفاة 6 مايو 1994 (77 سنة)   مواطنة الولايات المتحدة...

 

 

Ibn Wahshiyya

10th-century writer on agriculture, plants, and magic Ibn Waḥshiyyaابن وحشيةManuscript of The Nabataean AgricultureDied930–1 CE (318 AH)[1]Notable workThe Nabataean AgricultureEraIslamic Golden AgeRegionKufa (Iraq)LanguageArabicMain interestsAgriculture, botany, toxicology, alchemy and chemistry, magic Ibn Waḥshiyya (Arabic: ابن وحشية), died c. 930, was a Nabataean (Aramaic-speaking, rural Iraqi) agriculturalist, toxicologist, and alchemist born in Qus...

The Four and Twenty Elders Casting their Crowns before the Divine Throne

Drawing and painting by William Blake The Four and Twenty Elders Casting their Crowns before the Divine Throne, c. 1803–5. William Blake, Tate. 354 x 293 mm. The Four and Twenty Elders Casting their Crowns before the Divine Throne is a pencil drawing and watercolour on paper by the English poet, painter and printmaker William Blake. Created circa 1803–1805, the drawing has been held in London's Tate gallery since 1949. It is likely a visionary and hallucinatory summary of scenes from Chap...

 

 

Microsatellite

Repeating sequences of 2–13 base pairs of DNA This article is about the DNA sequence. For small orbiting spacecraft, see Microsatellite (spaceflight). A microsatellite is a tract of repetitive DNA in which certain DNA motifs (ranging in length from one to six or more base pairs) are repeated, typically 5–50 times.[1][2] Microsatellites occur at thousands of locations within an organism's genome. They have a higher mutation rate than other areas of DNA[3] leading to...

 

 

スローターハウス5

この記事は検証可能な参考文献や出典が全く示されていないか、不十分です。出典を追加して記事の信頼性向上にご協力ください。（このテンプレートの使い方）出典検索?: スローターハウス5 – ニュース · 書籍 · スカラー · CiNii · J-STAGE · NDL · dlib.jp · ジャパンサーチ · TWL（2017年10月） スローターハウス5Slaughterhouse-Five, or Th...

The Fast and the Furious (soundtrack)

This article is about the first 2001 soundtrack. For the second 2001 soundtrack, see More Fast and Furious. For the 2009 soundtrack, see Fast & Furious (soundtrack). For other soundtracks, see The Fast and the Furious § Soundtracks. This article needs additional citations for verification. Please help improve this article by adding citations to reliable sources. Unsourced material may be challenged and removed.Find sources: The Fast and the Furious soundtrack – ...

 

 

1924 Constitution of the Soviet Union

1924 Constitution of the Soviet UnionOverviewJurisdictionSoviet UnionDate effective31 January 1924Repealed5 December 1936Commissioned byCongress of Soviets of the Soviet UnionFull text Constitution of the Soviet Union (1924) at Wikisource The 1924 Constitution of the Soviet Union was the constitution of the Soviet Union adopted on 31 January 1924. According to British historian Archie Brown the constitution was never an accurate guide to political reality in the USSR. For example, ...

 

 

赤斤蒙古卫

明朝关西八卫 赤斤蒙古卫，明朝关西八卫之一，简称赤斤卫，又作赤金卫。 明朝 明朝永乐二年（1404年）元朝丞相苦术之子塔力尼投降明朝，以其所部在赤斤站设置赤斤蒙古千户所，在今甘肃省玉门市西北赤金堡。永乐八年（1410年）升为赤斤卫，正德年间被吐鲁番汗国所破，当地人内徙肃州的南山，赤斤城空。 清朝 清圣祖康熙五十七年（1718年），恢复赤金卫，清世宗雍正...

Stasiun Shin-Unuma

Stasiun Shin-Unuma 新鵜沼駅Stasiun Shin-Unuma pada Juni 2007Lokasi5 Chome Unuma Minamimachi, Kakamigahara-shi, Gifu-ken 509-012517.6 km dari Meitetsu-GifuOperator MeitetsuJalur ■ Jalur Inuyama ■ Jalur Kakamigahara Jumlah peron2 peron pulau + 1 peron sampingInformasi lainStatusMemiliki stafKode stasiunIY17Situs webSitus web resmi (dalam bahasa Jepang)SejarahDibuka21 Januari 1926PenumpangFY201511.024 Lokasi pada petaStasiun Shin-UnumaLokasi di JepangSunting kotak info...

 

 

Scottish Division One 1972-1973

Scottish Division One 1972-1973 Competizione Scottish Division One Sport Calcio Edizione 76ª Organizzatore SFL Date dal 2 settembre 1972al 28 aprile 1973 Luogo  Scozia Partecipanti 18 Formula Girone all'italiana A/R Risultati Vincitore Celtic(28º titolo) Retrocessioni KilmarnockAirdrieonians Statistiche Miglior giocatore George Connelly (SFWA) Miglior marcatore Alan Gordon (27) Incontri disputati 306 Gol segnati 932 (3,05 per incontro) Cronologia della competizi...