Trumpler-osztályozás

Az M41 halmaz, melynek Trumpler osztálya I,3,r

A Trumpler-osztályozás a nyílthalmazok osztályozására szolgáló egyik séma, melyet Robert Julius Trumpler svájci csillagász alakított ki 1930-ban. Három szempont alapján osztályozza a halmazokat:

  • koncentráció
  • csillagok látszó fényessége
  • csillagok száma

Az osztályozás eredménye a megfigyelés végrehajtása és értelmezése alapján változó lehet, egy-egy nyílthalmaz többféle besorolást is kaphat.

Koncentráció

Az osztályozás első szempontja a koncentráció, amit egy római számmal fejezünk ki:

  • I: elkülönülő (jól elhatárolható a háttérben lévő csillagoktól); a középpont irányában erős koncentráció
  • II: elkülönülő; a középpont irányában gyenge koncentráció
  • III: elkülönülő; a középpont irányában nincsen koncentráció
  • IV: nem igazán különül el a környező csillagmezőtől

Fényesség

Arab számmal megadott érték, mely a halmaz csillagainak egymáshoz viszonyított látszó fényességét jelöli:

  • 1: a csillagok fényessége kis tartományban változik, minden csillag látszó fényessége hasonló
  • 2: a csillagok fényessége közepes tartományban változik
  • 3: a csillagok fényessége széles tartományban változik

Csillagok száma

Betűvel jelölt érték, ami a halmaz csillagainak száma szerinti besorolást adja meg:

  • p: 50-nél kevesebb csillag (poor)
  • m: 50 és 100 közötti számú csillag (moderately rich)
  • r: több, mint 100 csillag (rich)

Köd

Amennyiben a halmaz egy csillagködben található, a Trumpler-besorolás egy n betűvel egészül ki.

Példák

Az M41 nyílthalmaz besorolása: I,3,r. Az M67 halmazt többféleképpen sorolták be, ettől függően lehet:

  • II,2,r (Glyn Jones)
  • II,2,m (Sky Catalog 2000)
  • II,3,r (Götz)

Források

Read other articles:

Élections législatives de 2017 dans les Bouches-du-Rhône

2012 2022 Élections législatives de 2017 dans les Bouches-du-Rhône 16 députés à l'Assemblée nationale 11 et 18 juin 2017 Type d’élection Élections législatives Campagne 22 mai au 10 juin12 juin au 16 juin Débat(s) 3e circonscription : le 1er juin sur France 3 Provence-Alpes5e circonscription : le 1er juin sur France 3 Provence-Alpes[1] Corps électoral et résultats Population 2 006 069 Inscrits 1 370 875 Votants au 1er tour 632 549  ...

 

Lucius Valerius Septimius Bassus

Inscription in the Roman Forum, dedicated by Lucius Valerius Septimius Bassus, praefectus urbi of Rome in 379 or 383 Lucius Valerius Septimius Bassus (c. 328 - aft. 379 or 383) was a Roman politician. Life He was the son of Valerius Maximus and first wife Septimia Bassa. He was praefectus urbi Romae under the emperors Gratian, Valentinian II and Theodosius I, between 379 (the year of Thedosius's ascension) and 383 (the year of Gratian's death). He possibly married Adelphia, as their son's nom...

 

Perjalanan Tak Tergantikan

Perjalanan Tak TergantikanAlbum studio karya The RainDirilis10 Januari 2009Direkam2008GenrePop, rock, countryLabelNagaswaraKronologi The Rain Serenade(2007)Serenade2007 Perjalanan Tak Tergantikan(2009) Jingga Senja dan Deru Hujan(2012)Jingga Senja dan Deru Hujan2012 Perjalanan Tak Tergantikan adalah album keempat dari grup band The Rain yang dirilis pada tanggal 10 Januari 2009 melalui Nagaswara. Album ini melahirkan 4 single yaitu Boleh Saja Benci, Meninggalkan Cerita Ini, Percaya dan Pe...

List of United States Supreme Court cases, volume 193

Supreme Court of the United States38°53′26″N 77°00′16″W / 38.89056°N 77.00444°W / 38.89056; -77.00444EstablishedMarch 4, 1789; 235 years ago (1789-03-04)LocationWashington, D.C.Coordinates38°53′26″N 77°00′16″W / 38.89056°N 77.00444°W / 38.89056; -77.00444Composition methodPresidential nomination with Senate confirmationAuthorized byConstitution of the United States, Art. III, § 1Judge term lengthl...

 

Chakri dynasty

Reigning dynasty of Thailand House of Chakriราชวงศ์จักรีThe royal emblemCountryThailandFounded6 April 1782; 242 years ago (1782-04-06)FounderRama ICurrent headRama XTitlesKing of Siam (1782–1949) King of Thailand (1949–present)Estate(s)Kingdom of ThailandCadet branches131 cadet houses (91 royal and 40 viceregal) Thai royal family The KingThe Queen The Royal Consort The Princess Rajasarini Siribajra Princess Sirivannavari Prince Dipangkorn Rasmijot...

 

Marwin Hitz

Marwin Hitz Informasi pribadiNama lengkap Marwin HitzTanggal lahir 18 September 1987 (umur 36)Tempat lahir SwissTinggi 1,91 m (6 ft 3 in)Posisi bermain Penjaga gawangInformasi klubKlub saat ini Borussia DortmundNomor 35Karier junior St. GallenKarier senior*Tahun Tim Tampil (Gol)2005–2008 St. Gallen II 38 (0)2007 → Yverdon Sport (pinjaman) 2 (0)2008 → Winterthur (pinjaman) 15 (0)2008–2009 VfL Wolfsburg II 45 (0)2008–2013 VfL Wolfsburg 13 (0)2013– FC Augsburg 32...

Перуанский анчоус

Перуанский анчоус Научная классификация Домен:ЭукариотыЦарство:ЖивотныеПодцарство:ЭуметазоиБез ранга:Двусторонне-симметричныеБез ранга:ВторичноротыеТип:ХордовыеПодтип:ПозвоночныеИнфратип:ЧелюстноротыеГруппа:Костные рыбыКласс:Лучепёрые рыбыПодкласс:Новопёрые �...

 

Ojingeo-jeot

Korean salted fermented squid dish Ojingeo-jeotOjingeo-jeot served with toasted sesame seeds and pine nuts sprinkled on topAlternative namesSalted squidTypeJeotgalPlace of originKoreaAssociated cuisineKorean cuisineServing temperature4–10 °C (39–50 °F)Food energy(per 20 serving)20 kcal (84 kJ)[1] Korean nameHangul오징어젓Revised Romanizationojingeo-jeotMcCune–Reischauerojing'ŏ-chŏtIPA[o.dʑiŋ.ʌ.dʑʌt̚] Ojingeo-jeot (오징어젓) or salted...

 

Mori Point

Mori PointMori Point is a prominent bluff extending into the Pacific Ocean, seen from a viewpoint looking south from Pacifica Beach.Mori PointShow map of San FranciscoMori PointShow map of CaliforniaMori PointShow map of the United StatesNearest cityPacificaCoordinates37°37′13″N 122°29′54″W / 37.62028°N 122.49833°W / 37.62028; -122.49833Area110 acres (45 ha)Created2002Operated byNational Park ServicePublic transit accesssamTrans, 110 or 112We...

UBE2O

UBE2O المعرفات الأسماء المستعارة UBE2O, E2-230K, ubiquitin conjugating enzyme E2 O معرفات خارجية الوراثة المندلية البشرية عبر الإنترنت 617649 MGI: MGI:2444266 HomoloGene: 11113 GeneCards: 63893 علم الوجود الجيني الوظيفة الجزيئية • نشاط انتقالي• nucleotide binding• ‏GO:0001948، ‏GO:0016582 ربط بروتيني• ATP binding• ubiquitin conjugating enzyme activity• ubiq...

 

Infertility

Inability to reproduce by natural means This article is about the medical condition in humans. For the soil, see Soil fertility. Medical conditionInfertilitySpecialtyUrology, gynecologyCausesCommon in females: annouvulation, blocked fallopian tube, hormonal imbalance Common in males: low sperm count, abnormal sperm morphologyFrequency113 million (2015)[1] Infertility is the inability of an animal or plant to reproduce by natural means. It is usually not the natural state of a healthy ...

 

List of Stanford University alumni

This is a dynamic list and may never be able to satisfy particular standards for completeness. You can help by adding missing items with reliable sources.Following is a list of notable students and alumni of Stanford University. Academia Presidents and chancellors Gene D. Block (A.B. 1970), 8th chancellor of University of California, Los Angeles Derek Bok (A.B. 1951), 25th president of Harvard University José Antonio Bowen (A.B., M.S., Ph.D. 1994), 11th president of Goucher College Avishay ...

مزرعة خواجة منصور (سفيد دشت)

مزرعة خواجة منصور مزرعه خواجه منصور  - قرية -  تقسيم إداري البلد  إيران المحافظة أصفهان المقاطعة مقاطعة آران وبيدغل الناحية Central القسم الريفي قسم سفید دشت الريفي إحداثيات 34°06′49″N 51°28′19″E / 34.11361°N 51.47194°E / 34.11361; 51.47194 السكان معلومات أخرى التوقيت توقي...

 

جغرافيا المغرب

32°00′N 5°00′W / 32.000°N 5.000°W / 32.000; -5.000  المغربمعلومات عامةالبلد المغرب المنطقة شمال أفريقياالقارة أفريقياالمناخ متوسطي، أطلسي، صحراويالساحل البحر الأبيض المتوسطالمحيط الأطلسيمضيق جبل طارق الحدود  موريتانيا: 1561 كم  الجزائر: 1559 كم  إسبانيا: 15,9 كمالأرض وا�...

 

Pielisjoki

River in North Karelia, Finland 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: Pielisjoki – news · newspapers · books · scholar · JSTOR (February 2017) (Learn how and when to remove this message) Pielisjoki (River Pielinen)[1] is a 67-kilometre (42 mi) long river in Eastern Finland. It is the s...

Norman Gash

British historian Norman Gash Norman Gash CBE FBA FRSE FRHistS FRSL (16 January 1912 in Meerut, British Raj – 1 May 2009 in Somerset) was a British historian, best remembered for a two-volume biography of British prime minister Sir Robert Peel. He was professor of modern history at the University of St Andrews from 1955 to 1980 and specialised in the 19th century. Early life This section does not cite any sources. Please help improve this section by adding citations to relia...

 

Civil service reform in the United States

Carl Schurz, founder of the Liberal Republican Party and prominent advocate of civil service reform. Civil service reform in the United States was a major issue in the late 19th century at the national level, and in the early 20th century at the state level. Proponents denounced the distribution of government offices—the spoils—by the winners of elections to their supporters as corrupt and inefficient. They demanded nonpartisan scientific methods and credential be used to select civil ser...

 

Artur Noga

Polish hurdler (born 1988) Artur NogaArtur Noga in 2015Personal informationNationalityPolishBorn (1988-05-02) 2 May 1988 (age 36)Racibórz, PolandHeight1.96 m (6 ft 5 in)Weight92 kg (203 lb)SportSportAthleticsEvent110 m hurdlesClubKS Warszawianka Medal record Men's athletics Representing  Poland European Championships 2012 Helsinki 110 m hurdles European Team Championships 2010 Bergen 110 m hurdles 2013 Gateshead 110 m hurdles World Junior Championships 2006...

1991 Bristol City Council election

1991 UK local government election 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: 1991 Bristol City Council election – news · newspapers · books · scholar · JSTOR (March 2020) (Learn how and when to remove this message) 1991 Bristol City Council election ← 1990 2 May 1991 1992 → 23 of 6...

 

Kellalac, Victoria

Town in Victoria, AustraliaKellalacVictoriaKellalac farm c. 1885KellalacCoordinates36°22′56″S 142°24′00″E / 36.3822014°S 142.3999124°E / -36.3822014; 142.3999124Population17 [1] (2016 census)Postcode(s)3393Elevation121[2] m (397 ft)Location 335 km (208 mi) NW of Melbourne 42 km (26 mi) NE of Horsham 16 km (10 mi) S of Warracknabeal LGA(s)Shire of YarriambiackState electorate(s)LowanFederal divisi...