Segi Tiga Selatan
Segi Tiga Selatan atau Triangulum Australe ialah sebuah buruj kecil di hemisfera samawi jauh selatan. Namanya dalam bahasa Latin bermaksud "segi tiga selatan", yang membezakannya daripada Triangulum (Segi Tiga) di langit utara dan diturunkan daripada corak hampir sama daripada ketiga-tiga bintang tercerahnya. Buruj ini pertama kali digambarkan pada sebuah glob samawi sebagai Triangulus Antarcticus atau Segi Tiga Antartik oleh Petrus Plancius pada 1589, dan kemudian dengan lebih ketepatan dan nama sekarangnya oleh Johann Bayer dalam karyanya Uranometria pada 1603. Penjelah dan ahli astronomi Perancis Nicolas Louis de Lacaille mencartakan dan memberi bintang-bintang lebih cerahnya designasi Bayer masing-masing pada 1756.
| Triangulum Australe | |
|---|---|
| Buruj | |
 | |
| Nama Latin | Triangulum Australe |
| Singkatan | TrA |
| Genitif | Trianguli Australis |
| Sebutan | /triangulum australe, genitif /trianguli australis/ |
| Simbolisme | Segi Tiga Selatan |
| Pencerapan | |
| (Epok J2000) | |
| 14j 56.4m hingga 17j 13.5m[1] | |
| Keserongan | −60.26° hingga −70.51°[1] |
| Sukuan | SQ3 |
| Keluarga | Herkules |
| Keluasan | 110 darjah persegi (ke-83) |
| Bintang | |
| Bintang utama | 3 |
| 10 | |
Bintang dengan planet | 1 |
Bintang terang (lebih daripada 3.00m) | 3 |
Bintang dalam 10.00 pc (32.62 ly) | 0 |
Bintang paling terang | α TrA (Atria) (1.91m) |
| Bintang terhampir | ζ TrA (39.48 tc, 12.11 pc) |
| Objek | |
| Objek Messier | Tiada |
| Pancuran meteor | Tiada |
| Buruj bersempadan | |
| Catatan | |
| Boleh dilihat pada garis lintang antara +25° dan −90°. Penglihatan terbaik pada jam 21:00 (9:00 malam) ketika bulan Julai. | |
sunting  | |
Alpha Trianguli Australis, dikenali sebagai Atria, ialah sebuah gergasi jingga bermagnitud kedua dan bintang tercerah dalam buruj ini, serta bintang keempat puluh dua tercerah di langit malam. Yang melengkapkan segi tiga ialah dua buah bintang jujukan utama putih Beta dan Gamma Trianguli Australis. Sungguhpun buruj ini terletak dalam Bimasakti dan mengandungi banyak bintang, objek-objek langit lepas adalah tidak prominen. Ciri-ciri ketara termasuklah gugusan terbuka NGC 6025 dan nebula planet NGC 5979.
Rujukan
sunting- Kutipan
Sumber
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- Bianciardi, G. (2009), "Nova Trianguli Australis 2008", Astronomia, La rivista dell' Unione Astrofili Italiani (dalam bahasa Itali) (2): 11–12, Bibcode:2009AsUAI...2...11B, ISSN 0392-2308CS1 maint: ref=harv (link)
- Croswell, Ken (2005), "Descendants of the Dipper", Astronomy, 33 (3): 40–45, ISSN 0091-6358CS1 maint: ref=harv (link)
- De Cat, P.; Wright, D. J.; Pollard, K. R.; Maisonneuve, F.; Kilmartin, P. M. (2009), "Is HD147787 a double-lined binary with two pulsating components? Preliminary results from a spectroscopic multi-site campaign", AIP Conference Proceedings, 1170: 483–85, doi:10.1063/1.3246549
- Gänsicke, B. T.; Beuermann, K.; Thomas, H.-C. (1997), "EK TrA, a close relative of VW HYI" (PDF), Monthly Notices of the Royal Astronomical Society, 289 (2): 388–92, Bibcode:1997MNRAS.289..388G, doi:10.1093/mnras/289.2.388
- Gray, R. O.; Corbally, C. J.; Garrison, R. F.; McFadden, M. T.; Bubar, E. J.; McGahee, C. E.; O'Donoghue, A. A.; Knox, E. R. (2006), "Contributions to the Nearby Stars (NStars) Project: spectroscopy of stars earlier than M0 within 40 pc-The Southern Sample", The Astronomical Journal, 132 (1): 161–70, arXiv:astro-ph/0603770, Bibcode:2006AJ....132..161G, doi:10.1086/504637
- Griffiths, Martin (2012), Planetary Nebulae and How to Observe Them, New York, New York: Springer, ISBN 1-4614-1781-3CS1 maint: ref=harv (link)
- Harney, Bill Yidumduma; Cairns, Hugh C. (2004) [2003], Dark Sparklers (ed. semakan), Merimbula, New South Wales, Australia: Hugh C. Cairns, ISBN 0-9750908-0-1CS1 maint: ref=harv (link)
- Hartung, Ernst Johannes (1984), Astronomical Objects for Southern Telescopes, with an Addendum for Northern Observatories: A Handbook for Amateur Observers, Cambridge, United Kingdom: CUP Archive, ISBN 0-521-31887-4CS1 maint: ref=harv (link)
- Hassall, B.J.M. (1985), "A superoutburst of the dwarf nova EK Trianguli Australis", Monthly Notices of the Royal Astronomical Society, 216: 335–52, Bibcode:1985MNRAS.216..335H, doi:10.1093/mnras/216.2.335, ISSN 0035-8711CS1 maint: ref=harv (link)
- Inglis, Mike (2004), Astronomy of the Milky Way: Observer's Guide to the Southern Sky, New York, New York, Amerika Syarikat: Springer, ISBN 1-85233-742-7CS1 maint: ref=harv (link)
- Kanas, Nick (2007), Star Maps: History, Artistry, and Cartography, Chichester, United Kingdom: Praxis Publishing, ISBN 0-387-71668-8CS1 maint: ref=harv (link)
- Klepešta, Josef; Rükl, Antonín (1974) [1969], Constellations, Feltham, United Kingdom: Hamlyn, ISBN 0-600-00893-2CS1 maint: ref=harv (link)
- Mennickent, Ronald E.; Arenas, Jose (1998), "The Orbital Period of the SU Ursae Majoris Star EK Trianguli Australis and Evidence for Ring-Like Accretion Disks in Long-Supercycle Length SU Ursae Majoris Stars", Publications of the Astronomical Society of Japan, 50: 333–42, Bibcode:1998PASJ...50..333M, doi:10.1093/pasj/50.3.333CS1 maint: ref=harv (link)
- Mobberley, Martin (2009), The Caldwell Objects and How to Observe Them, New York, New York, Amerika Syarikat: Springer, ISBN 1-4419-0325-9CS1 maint: ref=harv (link)
- Moore, Patrick (2005), The Observer's Year: 366 Nights of the Universe, New York, New York, Amerika Syarikat: Springer, ISBN 1-85233-884-9CS1 maint: ref=harv (link)
- Moore, Patrick; Tirion, Wil (1997), Cambridge Guide to Stars and Planets, Cambridge, United Kingdom: Akhbar Universiti Cambridge, ISBN 978-0-521-58582-8CS1 maint: ref=harv (link)
- Motz, Lloyd; Nathanson, Carol (1991), The Constellations: An Enthusiast's Guide to the Night Sky, London, United Kingdom: Aurum Press, ISBN 1-85410-088-2CS1 maint: ref=harv (link)
- Nicolet, B. (1978), "Photoelectric Photometric Catalogue of Homogeneous Measurements in the UBV System", Astronomy and Astrophysics Supplement Series, 34: 1–49, Bibcode:1978A&AS...34....1NCS1 maint: ref=harv (link)
- Russell, Henry Norris (1922), "The New International Symbols for the Constellations", Popular Astronomy, 30: 469, Bibcode:1922PA.....30..469RCS1 maint: ref=harv (link)
- Schaaf, Fred (2008), The Brightest Stars: Discovering the Universe Through the Sky's Most Brilliant Stars, Hoboken, New Jersey, Amerika Syarikat: John Wiley and Sons, ISBN 0-471-70410-5CS1 maint: ref=harv (link)
- Ségransan, D.; Udry, S.; Mayor, M.; Naef, D.; Pepe, F.; Queloz, D.; Santos, N.C.; Demory, B.-O.; Figueira, P.; Gillon, M.; Marmier, M.; Mégevand, D.; Sosnowska, D.; Tamuz, O.; Triaud, A. H. M. J. (Februari 2010), "The CORALIE Survey for Southern Extrasolar Planets: XVI. Discovery of a Planetary System around HD 147018 and of Two Long Period and Massive Planets Orbiting HD 171238 and HD 204313", Astronomy and Astrophysics, 511: A45, arXiv:0908.1479, Bibcode:2010A&A...511A..45S, doi:10.1051/0004-6361/200912136CS1 maint: multiple names: authors list (link)
- Skuljan, Jovan (2004), "Accurate Orbital Parameters for the Bright Southern Spectroscopic Binary ζ Trianguli Australis – an Interesting Case of a Near-circular Orbit", Monthly Notices of the Royal Astronomical Society, 352: 975, Bibcode:2004MNRAS.352..975S, doi:10.1111/j.1365-2966.2004.07988.xCS1 maint: ref=harv (link)
- Tabur, V.; Bedding, T. R. (2009), "Long-term Photometry and Periods for 261 Nearby Pulsating M Giants", Monthly Notices of the Royal Astronomical Society, 400 (4): 1945–61, arXiv:0908.3228, Bibcode:2009MNRAS.400.1945T, doi:10.1111/j.1365-2966.2009.15588.xCS1 maint: ref=harv (link)
- Wagman, Morton (2003), Lost Stars: Lost, Missing and Troublesome Stars from the Catalogues of Johannes Bayer, Nicholas Louis de Lacaille, John Flamsteed, and Sundry Others, Blacksburg, Virginia, Amerika Syarikat: The McDonald & Woodward Publishing Company, ISBN 978-0-939923-78-6CS1 maint: ref=harv (link)
- Wallerstein, George; Matt, Sean; Gonzalez, Guillermo (2000), "The Carbon Cepheid RT Trianguli Australis: Additional Evidence of Triple-α and CNO Cycling", Monthly Notices of the Royal Astronomical Society, 311 (2): 414–22, Bibcode:2000MNRAS.311..414W, doi:10.1046/j.1365-8711.2000.03064.x
- Wielen, R.; Schwan, H.; Dettbarn, C.; Lenhardt, H.; Jahreiß, H.; Jährling, R. (1999), Sixth Catalogue of Fundamental Stars (FK6). Part I. Basic Fundamental Stars with Direct Solutions, Institut Perhitungan Astronomi Heidelberg, Bibcode:1999VeARI..35....1W
Sumber lain
- Office of Public Outreach (24 April 2008), "Cosmic Collisions Galore!", HubbleSite, Baltimore, Maryland, Amerika Syarikat: Institut Sains Teleskop Angkasa (STScI), dicapai pada 17 Oktober 2012
- "Triangulum Australe, Constellation Boundary", The Constellations, Kesatuan Astronomi Antarabangsa, dicapai pada 7 Jun 2012
- James, Andrew (7 Februari 2011), "'The '"Constellations : Part 2 Culmination Times"'", Southern Astronomical Delights, Sydney, New South Wales, Australia, dicapai pada 10 September 2012CS1 maint: ref=harv (link)
- Kaler, Jim, "Atria (Alpha Trianguli Australis)", Stars, Universiti Illinois, dicapai pada 17 October 2012
- Kaler, Jim (10 Ogos 2007), "Beta Trianguli Australis", Stars, Universiti Illinois, dicapai pada 17 Oktober 2012
- Polakis, Tom (2001), "Ara, Triangulum and Apus: A spectacular Myriad of Deep-sky Objects Fills this Southern Trio", Astronomy, 29 (7): 80–84, ISSN 0091-6358CS1 maint: ref=harv (link)
- Ridpath, Ian, "Lacaille's Grouping of Norma, Circinus, and Triangulum Australe", Star Tales, dicapai pada 7 Jun 2012
- Ridpath, Ian, "Triangulum Australe", Star Tales, dicapai pada 7 Jun 2012
- "Delta Trianguli Australis", Pangkalan Data Astronomi SIMBAD, Pusat Data Astronomi Strasbourg, dicapai pada 7 Jun 2012
- "CPD-63 3854B", Pangkalan Data Astronomi SIMBAD, Pusat Data Astronomi Strasbourg, dicapai pada 4 Oktober 2012
- "Epsilon Trianguli Australis", Pangkalan Data Astronomi SIMBAD, Pusat Data Astronomi Strasbourg, dicapai pada 7 Jun 2012
- "HD 138510", Pangkalan Data Astronomi SIMBAD, Pusat Data Astronomi Strasbourg, dicapai pada 7 Jun 2012
- "HD 150550 – Pulsating variable Star", Pangkalan Data Astronomi SIMBAD, Pusat Data Astronomi Strasbourg, dicapai pada 4 Oktober 2012
- "HR 6172 – Be Star", Pangkalan Data Astronomi SIMBAD, Pusat Data Astronomi Strasbourg, dicapai pada 4 Oktober 2012
- "Kappa Trianguli Australis", Pangkalan Data Astronomi SIMBAD, Pusat Data Astronomi Strasbourg, dicapai pada 4 Oktober 2012
- "LTT 6522 – High proper-motion Star", Pangkalan Data Astronomi SIMBAD, Pusat Data Astronomi Strasbourg, dicapai pada 8 September 2012
- "R Trianguli Australis – Classical Cepheid (delta Cep type)", Pangkalan Data Astronomi SIMBAD, Pusat Data Astronomi Strasbourg, dicapai pada 2 September 2012
- "S Trianguli Australis – Classical Cepheid (delta Cep type)", Pangkalan Data Astronomi SIMBAD, Pusat Data Astronomi Strasbourg, dicapai pada 2 September 2012
- "U Trianguli Australis – Cepheid variable Star", Pangkalan Data Astronomi SIMBAD, Pusat Data Astronomi Strasbourg, dicapai pada 2 September 2012
- "X Trianguli Australis – Carbon Star", Pangkalan Data Astronomi SIMBAD, Pusat Data Astronomi Strasbourg, dicapai pada 9 September 2012
Pautan luar
sunting| Wikimedia Commons mempunyai media berkaitan: Segi Tiga Selatan. |
- The Deep Photographic Guide to the Constellations: Triangulum Australe (Inggeris)
- Starry Night Photography: Triangulum Australe (Inggeris)
- Buruj Triangulum Australe di Constellation Guide (Inggeris)
