Messier 30

Messier 30
Open cluster Messier 30 in Capricornus
Data pengamatan (J2000 epos)
KelasV[1]
Rasi bintangKaprikornus
Asensio rekta 21j 40m 22.12d[2]
Deklinasi –23° 10′ 47.5″[2]
Jarak2.714 ± 065 kly (830 ± 20 kpc)[3][4]
Magnitudo tampak (V)7.2[5]
Dimensi tampak (V)12'.0
Karakteristik fisik
Massa1,6×105[6] M
Perkiraan umur12.93 Gyr[7]
Nama lainM30, NGC 7099, GCl 122[8]
Lihat pula: Gugus bola, Daftar gugus bola
Peta yang menunjukkan lokasi Messier 30

Messier 30 (dikenal juga sebagai M30 atau NGC 7099) adalah sebuah gugus bola yang terletak di rasi bintang Kaprikornus. Gugus ini ditemukan oleh Charles Messier pada Agustus 1764.[9] Gugus ini dapat dilihat dengan mudah menggunakan binokular 10×50 sehingga memperlihatkan sekumpulan cahaya redup dengan lebar 4 menit busur.[10] Dengan peralatan yang lebih besar, dapat terlihat masing-masing bintang dan gugus akan terlihat dalam sudut 12 menit busur.[11] Waktu yang paling baik untuk mengamati adalah bulan Agustus.[10]

M30 berpusat 27.100 tahun cahaya dari Bumi dengan margin kesalahan sekitar 2,5%,[4] dan lebarnya sekitar 93 tahun cahaya.[11] Usia diperkirakan sekitar 12,9 miliar tahun[7] dan membentuk massa sekitar 160.000 kali massa Matahari (M☉).[6] Gugus mengikuti orbit mundur (melawan arus umum) melalui halo galaksi bagian dalam, menunjukkan bahwa ia diperoleh dari satelit galaksi daripada terbentuk di dalam Bima Sakti.[7] Pada zaman ini 22,2 kly (6,8 kpc), dari pusat galaksi, dibandingkan dengan perkiraan 26 kly (8,0 kpc) untuk Matahari.[12]

Gugus tersebut telah melewati proses dinamis yang disebut keruntuhan inti dan kini memiliki konsentrasi massa pada intinya sekitar satu juta kali massa Matahari per kubik parsec. Ini menjadikannya salah satu daerah dengan kepadatan tertinggi di galaksi Bima Sakti. Bintang-bintang dalam jarak sedekat itu akan mengalami interaksi tingkat tinggi yang dapat menciptakan sistem bintang biner, serta jenis bintang yang disebut pengelana biru yang terbentuk melalui perpindahan massa.[3] Sebuah proses massa mungkin telah menyebabkan wilayah pusat memperoleh proporsi yang lebih besar dari bintang bermassa lebih tinggi, menciptakan gradien warna dengan kebiruan yang meningkat ke arah tengah gugus.[13]

Lihat juga

Referensi

  1. ^ Shapley, Harlow; Sawyer, Helen B. (August 1927), "A Classification of Globular Clusters", Harvard College Observatory Bulletin, 849 (849): 11–14, Bibcode:1927BHarO.849...11S. 
  2. ^ a b Goldsbury, Ryan; et al. (December 2010), "The ACS Survey of Galactic Globular Clusters. X. New Determinations of Centers for 65 Clusters", The Astronomical Journal, 140 (6): 1830–1837, arXiv:1008.2755alt=Dapat diakses gratis, Bibcode:2010AJ....140.1830G, doi:10.1088/0004-6256/140/6/1830. 
  3. ^ a b Lugger, Phyllis M.; et al. (March 2007), "Chandra X-Ray Sources in the Collapsed-Core Globular Cluster M30 (NGC 7099)", The Astrophysical Journal, 657 (1): 286–301, arXiv:astro-ph/0606382alt=Dapat diakses gratis, Bibcode:2007ApJ...657..286L, doi:10.1086/507572 
  4. ^ a b Kains, N.; et al. (2016), "Estimating the parameters of globular cluster M 30 (NGC 7099) from time-series photometry", Astronomy and Astrophysics, 555 (1): 36–50, arXiv:1305.3606alt=Dapat diakses gratis, Bibcode:2013A&A...555A..36K, doi:10.1051/0004-6361/201321819 
  5. ^ "Messier 30". SEDS Messier Catalog. Diakses tanggal 28 April 2022. 
  6. ^ a b Vande Putte, D.; Cropper, Mark (January 2009), "Detecting the effect of globular cluster impacts on the disc of the Milky Way", Monthly Notices of the Royal Astronomical Society, 392 (1): 113–124, arXiv:0811.3106alt=Dapat diakses gratis, Bibcode:2009MNRAS.392..113V, doi:10.1111/j.1365-2966.2008.14072.x 
  7. ^ a b c Forbes, Duncan A.; Bridges, Terry (May 2010), "Accreted versus in situ Milky Way globular clusters", Monthly Notices of the Royal Astronomical Society, 404 (3): 1203–1214, arXiv:1001.4289alt=Dapat diakses gratis, Bibcode:2010MNRAS.404.1203F, doi:10.1111/j.1365-2966.2010.16373.x 
  8. ^ "M 30". SIMBAD. Centre de données astronomiques de Strasbourg. 
  9. ^ "Globular Cluster Messier 30". Deep⋆Sky Corner. Diakses tanggal 30 Desember 2022. 
  10. ^ a b Bone, N. M. (2008), "Sky notes, 2008 August & September", Journal of the British Astronomical Association, 118 (4): 231–232, Bibcode:2008JBAA..118..231B  Kesalahan pengutipan: Tanda <ref> tidak sah; nama "jbaa118_4_231" didefinisikan berulang dengan isi berbeda
  11. ^ a b O'Meara, Stephen James (1998), The Messier objects, Deep-sky companions, Cambridge University Press, hlm. 108, ISBN 0-521-55332-6  Kesalahan pengutipan: Tanda <ref> tidak sah; nama "omeara1998" didefinisikan berulang dengan isi berbeda
  12. ^ Dinescu, Dana I.; et al. (January 1999), "Space Velocities of Southern Globular Clusters. II. New Results for 10 Clusters", The Astronomical Journal, 117 (1): 277–285, Bibcode:1999AJ....117..277D, doi:10.1086/300699alt=Dapat diakses gratis 
  13. ^ Howell, Justin H.; Guhathakurta, Puragra; Tan, Amy (March 2000), "Radial Color Gradient and Main-Sequence Mass Segregation in M30 (NGC 7099)", The Astronomical Journal, 119 (3): 1259–1267, arXiv:astro-ph/9912002alt=Dapat diakses gratis, Bibcode:2000AJ....119.1259H, doi:10.1086/301270 

Pranala luar

Koordinat: Peta langit 21h 40m 22.03s, −23° 10′ 44.6″

Read other articles:

American author and cartoonist Norman BridwellBridwell in 2011BornNorman Ray Bridwell[1](1928-02-15)February 15, 1928Kokomo, Indiana, U.S.DiedDecember 12, 2014(2014-12-12) (aged 86)Oak Bluffs, Massachusetts, U.S.OccupationWriter and illustratorGenreChildren's literatureNotable worksClifford the Big Red DogSpouse Norma Howard ​(m. 1958⁠–⁠2014)​[2]Children2 Norman Ray Bridwell (February 15, 1928 – December 12, 2014) was an ...

 

Resolusi 1451Dewan Keamanan PBBPerlintasan perbatasan antara Israel dan SuriahTanggal17 Desember 2002Sidang no.4.670KodeS/RES/1451 (Dokumen)TopikSituasi di Timur TengahRingkasan hasil15 mendukungTidak ada menentangTidak ada abstainHasilDiadopsiKomposisi Dewan KeamananAnggota tetap Tiongkok Prancis Rusia Britania Raya Amerika SerikatAnggota tidak tetap Bulgaria Kamerun Kolombia Guinea Irlandia Meksiko Mauritius Norwegia...

 

American college football season 1965 Auburn Tigers footballConferenceSoutheastern ConferenceRecord4–6 (1–5 SEC)Head coachRalph Jordan (16th season)Home stadiumCliff Hare StadiumLegion FieldSeasons← 19641966 → 1966 Southeastern Conference football standings vte Conf Overall Team W   L   T W   L   T No. 3 Alabama + 6 – 0 – 0 11 – 0 – 0 No. 4 Georgia + 5 – 0 – 0 10 – 1 – 0 Florida 5 – 1...

Not to be confused with Big Girls Don't Cry. 2014 single by SiaBig Girls CrySingle by Siafrom the album 1000 Forms of Fear Released25 June 2014 (2014-06-25)Recorded2013GenrePopLength3:31Label Monkey Puzzle RCA Songwriter(s) Sia Furler Christopher Braide Producer(s)Greg KurstinSia singles chronology Chandelier (2014) Big Girls Cry (2014) Guts Over Fear (2014) Music videoBig Girls Cry on YouTube Big Girls Cry is a single by Australian singer-songwriter Sia, from her sixth stu...

 

Annual college football tournament in Arizona Cactus Bowl redirects here. For the Division II all-star game played from 2001 through 2011, see Cactus Bowl (Division II). Buffalo Wild Wings Bowl redirects here. Not to be confused with Buffalo Wild Wings Citrus Bowl. Guaranteed Rate Bowl StadiumChase FieldLocationPhoenix, ArizonaPrevious stadiumsArizona Stadium (1989–1999)Bank One Ballpark(2000–2005)Sun Devil Stadium(2006–2015)Previous locationsTucson, Arizona (1989–1999)Phoenix, Arizon...

 

14th century Albanian nobleman Genealogy of the Kastrioti family, Du Cange (1680), Historia Byzantina duplici commentario Pal or Gjergj Kastrioti was an Albanian medieval ruler in the latter part of the 14th century in northern Albania. Not much is known about his life. He is mentioned in only two historical sources which describe his rule as extending in a region between Mat and Dibër. His son was Gjon Kastrioti and his grandson Skanderbeg, the Albanian national hero. In historiography A fi...

Bronze Age archaeological site in eastern Jordan For the Iron Age village in central Jordan, see Tall Jawa. JawaView of Jawa from the southShown within JordanLocationJordanRegionMafraq GovernorateCoordinates32°20′06″N 37°00′12″E / 32.33500°N 37.00333°E / 32.33500; 37.00333 Jawa is the site of the oldest proto-urban development in Jordan, dating from the late 4th millennium BC (Early Bronze Age). It is located in one of the driest areas of the Black Desert (...

 

Kimia AlizadehInformasi pribadiNama asliکیمیا علیزاده زنوزیKewarganegaraanIranLahir10 Juli 1998 (umur 25)Karaj, IranKediamanHamburg, Jerman[1]Tinggi173 m (567 ft 7 in)Berat57 kg (126 pon)PasanganHamed Madanchi (k. 2018)Situs webWebsite resmi OlahragaNegaraIran (sampai 2020)OlahragaTaekwondoLombaKelas bulu ( –57 kg) Rekam medali Mewakili  Iran Turnamen 1 2 3 Olimpiade Musim Panas – – 1 Kejuaraan Dunia – 1 1 Kejuaraan Asia...

 

1919 film Fool's GoldAd for filmDirected byLaurence TrimbleWritten byM. A. MillerStarringMitchell LewisFlorence TurnerCinematographyH. A. HornDistributed byArrow Film CorporationRelease date May 26, 1919 (1919-05-26) Running timeSix reelsCountryUnited StatesLanguageSilent (English intertitles) Fool's Gold is a 1919 American silent drama film directed by Laurence Trimble.[1] A copy of the film survives in the British Film Institute's National Film and Television Archive....

2006 studio album by The Isley BrothersBaby Makin' MusicStudio album by The Isley BrothersReleasedMay 9, 2006GenreR&BLength40:45LabelDef Soul ClassicsDef JamProducer Gordon Chambers Bryan-Michael Cox Jermaine Dupri R. Kelly Ezekiel Lewis Manuel Seal Tim & Bob Troy Taylor The Isley Brothers chronology Body Kiss(2003) Baby Makin' Music(2006) I'll Be Home for Christmas(2007) Baby Makin' Music is the thirtieth studio album by the American Ohio musical soul group, the Isley Brother...

 

Oconee Hill CemeteryDetailsEstablished1856LocationAthens, GeorgiaCountryUnited StatesCoordinates33°56′52″N 83°21′59″W / 33.9476934°N 83.3662891°W / 33.9476934; -83.3662891WebsiteOfficial websiteFind a GraveOconee Hill Cemetery Entrance and groundskeeper house in 2011 Oconee Hill Cemetery is a cemetery in Athens, Georgia, United States. The extant cemetery opened in 1856 and is located near the University of Georgia.[1] Oconee Hill Cemetery was purch...

 

John Robert Vane Sir John Robert Vane (29 Maret 1927 – 19 November 2004) adalah farmakolog Britania Raya. Ayahnya adalah anak imigran Yahudi dari Rusia dan ibunya berasal dari keluarga pertanian Worcestershire. Ia dididik di King Edward's School, Edgbaston, Birmingham, dan belajar kimia di Universitas Birmingham pada 1944. Vane menyelesaikan S3 farmakologi dari Universitas Oxford pada 1953. Ia memegang jabatan di Institute of Basic Medical Sciences Universitas London di Royal College of Sur...

Romanian football player Vasile Zavoda Zavoda in 1955Personal informationFull name Vasile ZavodaDate of birth (1929-07-26)26 July 1929Place of birth Rodna Veche, Romania[1]Date of death 14 July 2014(2014-07-14) (aged 84)[2]Place of death București, RomaniaHeight 1.74 m (5 ft 9 in)[1]Position(s) DefenderYouth career1947–1948 FC Minaur Baia MareSenior career*Years Team Apps (Gls)1950 FC Baia Mare 10 (0)1951–1964 Steaua București 257 (1)1964–19...

 

  Neovenatoridae Rango temporal: 128 Ma PreЄ Є O S D C P T J K Pg N ↓ Cretácico InferiorPosible registro del Cretácico Superior recreación de Neovenator salerii.TaxonomíaReino: AnimaliaFilo: ChordataClase: SauropsidaSuperorden: DinosauriaOrden: SaurischiaSuborden: TheropodaInfraorden: CarnosauriaSuperfamilia: AllosauroideaFamilia: NeovenatoridaeBenson, Carrano & Brusatte, 2009Especie tipo Neovenator saleriiHutt, Martill, & Barker, 1996Géneros Neovenator Chilantaisaur...

 

Castle in Estonia You can help expand this article with text translated from the corresponding article in Estonian. (August 2023) Click [show] for important translation instructions. Machine translation, like DeepL or Google Translate, is a useful starting point for translations, but translators must revise errors as necessary and confirm that the translation is accurate, rather than simply copy-pasting machine-translated text into the English Wikipedia. Do not translate text that appear...

La Merced Municipio Panorámica de La Merced. BanderaEscudo La MercedLocalización de La Merced en Colombia La MercedLocalización de La Merced en CaldasCoordenadas 5°23′58″N 75°32′49″O / 5.3994444444444, -75.546944444444Entidad Municipio • País  Colombia • Departamento Caldas • Subregión Alto OccidenteAlcalde Juan Fernando Ospina Nieto (designado 2022–2023)[1]​Eventos históricos   • Fundación 1901[2]​ • ...

 

2015 studio album by Fred FrithPropagandaStudio album by Fred FrithReleasedNovember 2015 (2015-11)RecordedApril 1987StudioNoise New YorkGenreExperimental musicLength35:31LabelFred (UK)ProducerFred FrithFred Frith chronology Field Days (The Amanda Loops)(2015) Propaganda(2015) Storytelling(2017) Music for Dance series chronology Field Days (The Amanda Loops)(2015) Propaganda(2015) Propaganda is a studio album by English guitarist, composer and improvisor Fred Frith.[1]...

 

For the village in Silesian Voivodeship, see Gródków. For the German-American political activist, see Paul Grottkau. Place in Opole Voivodeship, PolandGrodkówTown Hall in Grodków FlagCoat of armsGrodkówCoordinates: 50°41′53″N 17°23′04″E / 50.69806°N 17.38444°E / 50.69806; 17.38444Country PolandVoivodeshipOpoleCountyBrzegGminaGrodkówFirst mentioned1210Town rights1268Government • MayorMarek Andrzej AntoniewiczArea • Total9.8...

Radio station in Rapid City, South Dakota KOUTRapid City, South DakotaFrequency98.7 MHzBrandingKat Country 98.7ProgrammingFormatCountryOwnershipOwnerHomeSlice Media Group, LLCSister stationsKBHB, KFXS, KKLS, KKMK, KRCSTechnical informationFacility ID14642ClassC1ERP100,000 wattsHAAT141 meters (463 feet)Transmitter coordinates44°04′13″N 103°15′01″W / 44.07028°N 103.25028°W / 44.07028; -103.25028Translator(s)102.3 K272CS (Spearfish)LinksWebcast[1]Websiteh...

 

British journalist and news presenter This article includes a list of general references, but it lacks sufficient corresponding inline citations. Please help to improve this article by introducing more precise citations. (December 2010) (Learn how and when to remove this template message) Ben BrownBornBenjamin Russell Brown (1960-05-26) 26 May 1960 (age 63)Kent, EnglandNationalityBritishOccupation(s)TV presenter, newsreader and journalistYears active1986–presentNotable workBBC New...

 

Strategi Solo vs Squad di Free Fire: Cara Menang Mudah!