FSR 1758

FSR 1758
The Sequoia Cluster (FSR 1758) in near-infrared
Credit: Legacy Surveys / D. Lang (Perimeter Institute) & Meli thev
Observation data (J2000 epoch)
ConstellationScorpius
Right ascension17h 31m 12s[1]
Declination−39° 48′ 30″[1]
Distance11.5 kpc (38 kly)[1]
Apparent magnitude (V)<7[1]
Apparent dimensions (V)1.56 ± 0.44 °[1]
Physical characteristics
Absolute magnitude<–8.6[1]
Mass~107[1] M☉
Radius10 ± 1 pc[1]
Tidal radius150 ± 45 pc[1]
Metallicity = −1.5[1] dex
Notable featuresPossible nucleus of a dwarf galaxy
See also: Globular cluster, List of globular clusters

FSR 1758 (also known as the Sequoia Cluster)[2] is a large and bright but heavily obscured globular cluster belonging to the Milky Way galaxy. It is located at a distance of about 11.5 kpc from the Sun and about 3.7 kpc from the center of the galaxy. As FSR 1758 lies behind the galactic bulge, it is heavily obscured by the foreground stars and dust. It was first noticed in 2007 in 2MASS data[3] and believed to be an open cluster, until data from the Gaia mission revealed in 2018 that it is a globular cluster.[4]

The size and brightness of FSR 1758 may be comparable to or exceed that of the Omega Centauri cluster, which is widely believed to be the nucleus of a dwarf galaxy that merged into Milky Way in the past. Therefore, FSR 1758 may be the nucleus of dwarf galaxy tentatively named Scorpius Dwarf galaxy. It may also be similar to another globular cluster, Messier 54, which is known to be the nucleus of Sagittarius Dwarf Spheroidal Galaxy.[1]

After Barbá et al. used the term Sequoia to describe the size of FSR 1758,[1] Myeong et al. used the term Sequoia in a slightly different way. They believe that FSR 1758 was one of five globular clusters that populated a dwarf galaxy that Myeong et al. re-name as the Sequoia dwarf galaxy. This dwarf was accreted into the Milky Way in the Sequoia Event. The members of Sequoia have a retrograde galactic orbit.[5] This term has been adopted by several other groups.[6][7]

References

  1. ^ a b c d e f g h i j k l Barbá, Rodolfo H.; Minniti, Dante; Geisler, Douglas; Alonso-García, Javier; Hempel, Maren; Monachesi, Antonela; Arias, Julia I.; Gómez, Facundo A. (2019). "A Sequoia in the Garden: FSR 1758—Dwarf Galaxy or Giant Globular Cluster?". The Astrophysical Journal. 870 (2): L24. arXiv:1812.04999. Bibcode:2019ApJ...870L..24B. doi:10.3847/2041-8213/aaf811. S2CID 119366404.
  2. ^ "NAME Sequoia Cluster". simbad.cds.unistra.fr. Retrieved 2024-11-05.
  3. ^ Froebrich, D.; Scholz, A.; Raftery, C. L. (2007). "A systematic survey for infrared star clusters using 2MASS". Monthly Notices of the Royal Astronomical Society. 374 (2): 399. arXiv:astro-ph/0610146. Bibcode:2007MNRAS.374..399F. doi:10.1111/j.1365-2966.2006.11148.x. S2CID 15339002.
  4. ^ Cantat-Gaudin, T.; et al. (October 2018). "A Gaia DR2 view of the open cluster population in the Milky Way". Astronomy & Astrophysics. 618: 16. arXiv:1805.08726. Bibcode:2018A&A...618A..93C. doi:10.1051/0004-6361/201833476. S2CID 56245426. A93.
  5. ^ Myeong, G. C.; Vasiliev, E.; Iorio, G.; Evans, N. W.; Belokurov, V. (2019-09-01). "Evidence for two early accretion events that built the Milky Way stellar halo". Monthly Notices of the Royal Astronomical Society. 488: 1235–1247. arXiv:1904.03185. Bibcode:2019MNRAS.488.1235M. doi:10.1093/mnras/stz1770. ISSN 0035-8711.
  6. ^ Koppelman, Helmer H.; Helmi, Amina; Massari, Davide; Price-Whelan, Adrian M.; Starkenburg, Tjitske K. (2019-11-01). "Multiple retrograde substructures in the Galactic halo: A shattered view of Galactic history". Astronomy and Astrophysics. 631: L9. arXiv:1909.08924. Bibcode:2019A&A...631L...9K. doi:10.1051/0004-6361/201936738. ISSN 0004-6361.
  7. ^ Dodd, Emma; Ruiz-Lara, Tomás; Helmi, Amina; Gallart, Carme; Callingham, Thomas M.; Cassisi, Santi; Fernández-Alvar, Emma; Surot, Fransisco (2024-08-01), Characterisation of local halo building blocks: Thamnos and Sequoia, arXiv:2408.13763, retrieved 2024-11-05


Read other articles:

Nathalie Arthaud

Pour les articles homonymes, voir Arthaud. Nathalie Arthaud Nathalie Arthaud en 2017. Fonctions Porte-parole de Lutte ouvrière En fonction depuis le 8 décembre 2008(15 ans, 3 mois et 26 jours) Avec Jean-Pierre Mercier (2012-) Prédécesseur Arlette Laguiller Conseillère municipale de Vaulx-en-Velin 21 mars 2008 – 4 avril 2014(6 ans et 14 jours) Élection 16 mars 2008 Maire Bernard Genin Biographie Nom de naissance Nathalie Yvonne Thérèse Arthaud Date de naissa...

 

Bell CH-146 Griffon

CH-146 Griffon Un hélicoptère canadien CH-146 Griffon du 430e escadron d'hélicoptère au dessus du Wisconsin le 16 juillet 2006. Rôle Hélicoptère tactique Constructeur Bell Helicopter Textron Canada Premier vol 1994 Mise en service 1995 Date de retrait Toujours en service Nombre construit 100 Équipage Trois (pilote, copilote, ingénieur de vol) Motorisation Moteur Pratt & Whitney Canada PT6T-3D Nombre 2 Type Turbomoteur Puissance unitaire 900 shp (671 kW) ch Nombre de pales 4...

 

Baby Mine (1928 film)

1928 film Baby Mine1928 newspaper advertisement for Baby MineDirected byRobert Z. LeonardWritten bySylvia Thalberg (adaptation) Lew Lipton (scenario) F. Hugh Herbert (scenario) Ralph Spence (intertitles)Based onBaby Mineby Margaret MayoProduced byLouis B. Mayer Irving Thalberg Robert Z. LeonardStarringKarl Dane George K. Arthur Charlotte GreenwoodCinematographyFaxon M. DeanEdited bySam ZimbalistProductioncompanyMetro-Goldwyn-MayerDistributed byMetro-Goldwyn-MayerRelease date January 8,&#...

Ichsanuddin Noorsy

Biografi ini tidak memiliki sumber tepercaya sehingga isinya tidak dapat dipastikan. Bantu memperbaiki artikel ini dengan menambahkan sumber tepercaya. Materi kontroversial atau trivial yang sumbernya tidak memadai atau tidak bisa dipercaya harus segera dihapus.Cari sumber: Ichsanuddin Noorsy – berita · surat kabar · buku · cendekiawan · JSTOR (Pelajari cara dan kapan saatnya untuk menghapus pesan templat ini) Ichsanuddin Noorsy Dr. H. Ichsanuddin Noor...

 

Pulau Banggai

Pulau BanggaiPeta lokasi Pulau BanggaiKoordinat1°37′S 123°34′E / 1.617°S 123.567°E / -1.617; 123.567NegaraIndonesiaProvinsiSulawesi TengahKabupatenBanggai LautLuas268 km²;Populasi26.089 jiwa (sensus 2000) Pulau Banggai adalah salah satu pulau di wilayah Kabupaten Banggai Laut, provinsi Sulawesi Tengah, Indonesia. Pulau ini terletak di selatan pulau Paleng di utara pulat Salue Besar dan di timur laut pulau Labobo. Perekonomian Di Pulau Banggai masyarakat bergan...

 

ISO 3166-2:IS

Entry for Iceland in ISO 3166-2 ISO 3166-2:IS is the entry for Iceland in ISO 3166-2, part of the ISO 3166 standard published by the International Organization for Standardization (ISO), which defines codes for the names of the principal subdivisions (e.g., provinces or states) of all countries coded in ISO 3166-1. Currently for Iceland, ISO 3166-2 codes are defined for 8 regions and 64 municipalities. Each code consists of two parts, separated by a hyphen. The first part is IS, the ISO 3166-...

趙家驤

追晉陸軍二級上將趙家驤將軍个人资料出生1910年 大清河南省衛輝府汲縣逝世1958年8月23日(1958歲—08—23)（47—48歲） † 中華民國福建省金門縣国籍 中華民國政党 中國國民黨获奖 青天白日勳章（追贈）军事背景效忠 中華民國服役 國民革命軍 中華民國陸軍服役时间1924年－1958年军衔 二級上將 （追晉）部队四十七師指挥東北剿匪總司令部參謀長陸軍�...

 

Menara Abraj Al Bait

Menara Abraj Al-Baitابراج البيتInformasi umumStatusSelesaiJenisFungsi beragam:hotel, tempat tinggalGaya arsitekturPascamodernismeLokasiMekkah, Saudi ArabiaMulai dibangun2004Pembukaan2012BiayaUS$15 miliar [2]TinggiArsitektural601 m (1.972 ft)[1]Pucuk601 m (1.972 ft)[1]Atap530 m (1.740 ft)Lantai atas5.587 m (18.330 ft)[1]Menara pandang5.587 m (18.330 ft)[1]Data teknisBahan bangunanmain structural...

 

新罕布什尔州

坐标：43°11′38″N 71°34′21″W / 43.1938516°N 71.5723953°W / 43.1938516; -71.5723953 此條目需要补充更多来源。 (2017年5月21日)请协助補充多方面可靠来源以改善这篇条目，无法查证的内容可能會因為异议提出而被移除。致使用者：请搜索一下条目的标题（来源搜索：新罕布什尔州 — 网页、新闻、书籍、学术、图像），以检查网络上是否存在该主题的更多可靠来源...

Новотитаровское сельское поселение

Сельское поселение России (МО 2-го уровня)Новотитаровское сельское поселение Флаг[d] Герб 45°14′09″ с. ш. 38°58′16″ в. д.HGЯO Страна  Россия Субъект РФ Краснодарский край Район Динской Включает 4 населённых пункта Адм. центр Новотитаровская Глава сельского пос�...

 

國民陣線

国民阵线Barisan NasionalNational Frontباريسن ناسيونلபாரிசான் நேசனல்国民阵线标志简称国阵，BN主席阿末扎希总秘书赞比里署理主席莫哈末哈山总财政希山慕丁副主席魏家祥维纳斯瓦兰佐瑟古律创始人阿都拉萨成立1973年1月1日 (1973-01-01)[1]设立1974年7月1日 (1974-07-01)前身 联盟总部 马来西亚  吉隆坡 50480 秋傑区敦依斯迈路太子世贸中心（英�...

 

2013 World Championships in Athletics – Women's pole vault

Women's pole vault at the 2013 World ChampionshipsVenueLuzhniki StadiumDates11 August (qualification)13 August (final)Competitors22 from 13 nationsWinning height4.89 m (16 ft 1⁄2 in)Medalists  Yelena Isinbayeva Russia (RUS) Jenn Suhr United States (USA) Yarisley Silva Cuba (CUB)← 20112015 → Official Video Events at the2013 World ChampionshipsTrack events100 mmenwomen200 mmenwomen400 mm...

Anti-ship missile

Missile used to attack ships RGM-84 Harpoon firing from USS Leahy in 1983 Martel guided anti-ship missile The MBDA Exocet anti-ship missile under a Dassault Rafale BrahMos, a supersonic cruise missile, compatible of being launched from multiple platforms. [1] An anti-ship missile (AShM[2] or ASM)[3] is a guided missile that is designed for use against ships and large boats. Most anti-ship missiles are of the sea-skimming variety, and many use a combination of iner...

 

الموسيقى في روما القديمة

Trio of musicians playing an aulos, cymbala, and tympanum (mosaic from بومبي) الموسيقى في روما القديمة، هي جزء من الثقافة الرومانية منذ العصور المبكرة..[1] كانت الموسيقى من الطقوس العرفية في الجنازات، والتيتبية (Greek aulos)، آلة موسيقية خشبية، كانت تعزف أثناء تقديم الأضاحي لدرء الشرور [2] أغنية (كارمن) ، كانت جز�...

 

Chitty

Tamil ethnic group in Malaysia and Singapore For other uses, see Chitty (disambiguation). Ethnic group ChittyPeranakan ChittyTotal population~5000[1]Regions with significant populations Malaysia (Melaka) ·  SingaporeLanguagesChitty Malay · Malay · EnglishReligionHinduismRelated ethnic groupsTamils · Telugus · Malays · Peranakan · Indian Malaysians · Indian Singapor...

Linear particle accelerator

Type of particle accelerator Linac redirects here. For the commune in France, see Linac, Lot. The linac within the Australian Synchrotron uses radio waves from a series of RF cavities at the start of the linac to accelerate the electron beam in bunches to energies of 100 MeV. A linear particle accelerator (often shortened to linac) is a type of particle accelerator that accelerates charged subatomic particles or ions to a high speed by subjecting them to a series of oscillating electric ...

 

Tres Valles (municipalité)

Cet article est une ébauche concernant une localité mexicaine. Vous pouvez partager vos connaissances en l’améliorant (comment ?) selon les recommandations des projets correspondants. Tres VallesGéographiePays  MexiqueÉtat VeracruzChef-lieu Tres Valles (d)Superficie 378,1 km2Altitude 40 mCoordonnées 18° 14′ 12″ N, 96° 08′ 13″ ODémographiePopulation 44 978 hab. (2020)Densité 119 hab./km2 (2020)FonctionnementStatut Munici...

 

Sergio Claudio dos Santos

Biografi ini tidak memiliki referensi atau sumber sehingga isinya tidak dapat dipastikan. Bantu memperbaiki artikel ini dengan menambahkan sumber tepercaya. Materi kontroversial atau trivial yang sumbernya tidak memadai atau tidak bisa dipercaya harus segera dihapus.Cari sumber: Sergio Claudio dos Santos – berita · surat kabar · buku · cendekiawan · JSTOR (Pelajari cara dan kapan saatnya untuk menghapus pesan templat ini) Untuk kegunaan lain, lihat Ser...

Stazione di Nagayama (Tokyo)

Nagayamastazione ferroviaria永山 Vista della stazione Keiō LocalizzazioneStato Giappone LocalitàTama, Tokyo Coordinate35°37′48.36″N 139°26′53.49″E35°37′48.36″N, 139°26′53.49″E Linee● Linea Odakyū Tama● Linea Keiō Sagamihara StoriaStato attualeIn uso Attivazione1974 CaratteristicheTipoStazione di interscambio su viadotto Binari2+2 OperatoriKeiō CorporationFerrovie Odakyū InterscambiBus NoteCodici: OT 05 KO 40 Statistiche viaggiatorial giorno70.7...

 

William Jackson (British Army officer)

For other people named William Jackson, see William Jackson (disambiguation). GeneralSir William JacksonSir William Jackson (left) with Sir Joshua Hassan, Chief Minister of Gibraltar (right), awaiting the arrival in Gibraltar of Charles, Prince of Wales in 1977.Born(1917-08-28)28 August 1917Blackpool, LancashireDied12 March 1999(1999-03-12) (aged 81)Swindon, WiltshireAllegianceUnited KingdomService/branchBritish ArmyYears of service1937–1977RankGeneralService number73056UnitRoyal ...