Lompat ke isi

Bintang Barnard: Perbedaan antara revisi

Dari Wikipedia bahasa Indonesia, ensiklopedia bebas
Jelajahi riwayat secara interaktif
← Revisi sebelumnya
Konten dihapus Konten ditambahkan
VisualTeks wiki
Tag: Suntingan perangkat seluler Suntingan peramban seluler Suntingan seluler lanjutan
Darhnh (bicara | kontrib)
196 suntingan
Tag: Suntingan perangkat seluler Suntingan peramban seluler Suntingan seluler lanjutan
 
(4 revisi perantara oleh 3 pengguna tidak ditampilkan)
Baris 4: Baris 4:
{{Starbox image
{{Starbox image
| image = [[Berkas:Barnardstar2006.jpg|250px]]
| image = [[Berkas:Barnardstar2006.jpg|250px]]
| caption = Lokasi Bintang Barnard
| caption = Lokasi Bintang Barnard, 2006
}}
}}
{{Starbox observe
{{Starbox observe
| epoch = [[J2000.0]]
| epoch = [[J2000.0]]
| constell = [[Ophiuchus]]
| constell = [[Ofiukus]]
| pronounce = {{IPAc-en|ˈ|b|ɑr|n|ər|d}}
| pronounce = {{IPAc-en|ˈ|b|ɑr|n|ər|d|z}}
| ra = {{RA|17|57|48,49803}}<ref name=hipparcos>{{cite journal|bibcode=2007A&A...474..653V|title=Validation of the new Hipparcos reduction|journal=Astronomy and Astrophysics|volume=474|issue=2|pages=653|author1=Van Leeuwen|first1=F.|year=2007|doi=10.1051/0004-6361:20078357|arxiv = 0708.1752 }}</ref>
| ra = {{RA|17|57|48.49803}}<ref name=hipparcos>{{cite journal|bibcode=2007A&A...474..653V|title=Validation of the new Hipparcos reduction|journal=Astronomy and Astrophysics|volume=474|issue=2|pages=653–664|last1=Van Leeuwen|first1=F.|year=2007|doi=10.1051/0004-6361:20078357|arxiv = 0708.1752 }}</ref>
| dec = {{DEC|+04|41|36,2072}}<ref name=hipparcos/>
| dec = {{DEC|+04|41|36.2072}}<ref name=hipparcos/>
| appmag_v = 9,511<ref name=koen/>
| appmag_v = 9.511<ref name=koen/>
}}
}}
{{Starbox character
{{Starbox character
| class = M4.0V<ref name=gizis>{{cite journal|bibcode=1997AJ....113..806G|title=M-Subdwarfs: Spectroscopic Classification and the Metallicity Scale|journal=The Astronomical Journal |volume=113|pages=806|author1=Gizis|first1=John E.|year=1997|doi=10.1086/118302|arxiv = astro-ph/9611222 }}</ref>
| class = M4.0V<ref name=gizis>{{cite journal|bibcode=1997AJ....113..806G|title=M-Subdwarfs: Spectroscopic Classification and the Metallicity Scale|journal=The Astronomical Journal |volume=113|pages=806–822|last1=Gizis|first1=John E.|year=1997|doi=10.1086/118302|arxiv = astro-ph/9611222 }}</ref>
| appmag_1_passband = U
| appmag_1_passband = U
| appmag_1 = 12,497<ref name=koen/>
| appmag_1 = 12.497<ref name=koen/>
| appmag_2_passband = B
| appmag_2_passband = B
| appmag_2 = 11,240<ref name=koen>{{cite journal|bibcode=2010MNRAS.403.1949K|title=UBV(RI)C JHK observations of Hipparcos-selected nearby stars|journal=Monthly Notices of the Royal Astronomical Society|volume=403|issue=4|pages=1949|author1=Koen|first1=C.|last2=Kilkenny|first2=D.|last3=Van Wyk|first3=F.|last4=Marang|first4=F.|year=2010|doi=10.1111/j.1365-2966.2009.16182.x}}</ref>
| appmag_2 = 11.240<ref name=koen>{{cite journal|bibcode=2010MNRAS.403.1949K|title=UBV(RI)C JHK observations of Hipparcos-selected nearby stars|journal=Monthly Notices of the Royal Astronomical Society|volume=403|issue=4|pages=1949|last1=Koen|first1=C.|last2=Kilkenny|first2=D.|last3=Van Wyk|first3=F.|last4=Marang|first4=F.|year=2010|doi=10.1111/j.1365-2966.2009.16182.x}}</ref>
| appmag_3_passband = R
| appmag_3_passband = R
| appmag_3 = 8,298<ref name=koen/>
| appmag_3 = 8.298<ref name=koen/>
| appmag_4_passband = I
| appmag_4_passband = I
| appmag_4 = 6,741<ref name=koen/>
| appmag_4 = 6.741<ref name=koen/>
| appmag_5_passband = J
| appmag_5_passband = J
| appmag_5 = 5,24<ref name=2mass>{{cite journal|bibcode=2003yCat.2246....0C|title=VizieR Online Data Catalog: 2MASS All-Sky Catalog of Point Sources (Cutri+ 2003)|journal=VizieR On-line Data Catalog: II/246. Originally published in: 2003yCat.2246....0C|volume=2246|pages=0|author1=Cutri|first1=R. M.|last2=Skrutskie|first2=M. F.|last3=Van Dyk|first3=S.|last4=Beichman|first4=C. A.|last5=Carpenter|first5=J. M.|last6=Chester|first6=T.|last7=Cambresy|first7=L.|last8=Evans|first8=T.|last9=Fowler|first9=J.|last10=Gizis|first10=J.|last11=Howard|first11=E.|last12=Huchra|first12=J.|last13=Jarrett|first13=T.|last14=Kopan|first14=E. L.|last15=Kirkpatrick|first15=J. D.|last16=Light|first16=R. M.|last17=Marsh|first17=K. A.|last18=McCallon|first18=H.|last19=Schneider|first19=S.|last20=Stiening|first20=R.|last21=Sykes|first21=M.|last22=Weinberg|first22=M.|last23=Wheaton|first23=W. A.|last24=Wheelock|first24=S.|last25=Zacarias|first25=N.|year=2003}}</ref>
| appmag_5 = 5.24<ref name=2mass>{{cite journal|bibcode=2003yCat.2246....0C|title=VizieR Online Data Catalog: 2MASS All-Sky Catalog of Point Sources (Cutri+ 2003)|journal=VizieR On-line Data Catalog: II/246. Originally Published in: 2003yCat.2246....0C|volume=2246|pages=0|last1=Cutri|first1=R. M.|last2=Skrutskie|first2=M. F.|last3=Van Dyk|first3=S.|last4=Beichman|first4=C. A.|last5=Carpenter|first5=J. M.|last6=Chester|first6=T.|last7=Cambresy|first7=L.|last8=Evans|first8=T.|last9=Fowler|first9=J.|last10=Gizis|first10=J.|last11=Howard|first11=E.|last12=Huchra|first12=J.|last13=Jarrett|first13=T.|last14=Kopan|first14=E. L.|last15=Kirkpatrick|first15=J. D.|last16=Light|first16=R. M.|last17=Marsh|first17=K. A.|last18=McCallon|first18=H.|last19=Schneider|first19=S.|last20=Stiening|first20=R.|last21=Sykes|first21=M.|last22=Weinberg|first22=M.|last23=Wheaton|first23=W. A.|last24=Wheelock|first24=S.|last25=Zacarias|first25=N.|year=2003}}</ref>
| appmag_6_passband = H
| appmag_6_passband = H
| appmag_6 = 4,83<ref name=2mass/>
| appmag_6 = 4.83<ref name=2mass/>
| appmag_7_passband = K
| appmag_7_passband = K
| appmag_7 = 4,524<ref name=2mass/>
| appmag_7 = 4.524<ref name=2mass/>
| r-i = <!--R-I color-->
| r-i = 1.557<ref name=koen/>
| v-r = <!--V-R color-->
| v-r = 1.213<ref name=koen/>
| b-v = 1,713<ref name=koen/>
| b-v = 1.713<ref name=koen/>
| u-b = 1,257<ref name=koen/>
| u-b = 1.257<ref name=koen/>
| variable = [[Variabel BY Draconis|BY Draconis]]<ref name=gcvs>{{cite journal|bibcode=2009yCat....102025S|title=VizieR Online Data Catalog: General Catalogue of Variable Stars (Samus+ 2007-2013)|journal=VizieR On-line Data Catalog: B/gcvs. Originally Published in: 2009yCat....102025S|volume=1|pages=B/gcvs|display-authors=etal|author1=Samus|first1=N. N.|last2=Durlevich|first2=O. V.|year=2009}}</ref>
| variable = [[BY Draconis variable|BY Draconis]]
}}
}}
{{Starbox astrometry
{{Starbox astrometry
| radial_v = −110,6 ± 0,2<ref name="Bobylev:arXiv1003.2160">{{cite journal |last=Bobylev |first=Vadim V. |date=March 2010 |title=Searching for Stars Closely Encountering with the Solar System |journal=Astronomy Letters |volume=36 |issue=3 |pages=220–226 |doi=10.1134/S1063773710030060 |arxiv=1003.2160 |bibcode=2010AstL...36..220B}}</ref>
| radial_v = −110.6 ± 0.2<ref name="Bobylev:arXiv1003.2160">{{cite journal |last=Bobylev |first=Vadim V. |date=March 2010 |title=Searching for Stars Closely Encountering with the Solar System |journal=Astronomy Letters |volume=36 |issue=3 |pages=220–226 |doi=10.1134/S1063773710030060 |arxiv=1003.2160 |bibcode=2010AstL...36..220B}}</ref>
| prop_mo_ra = −798,71<ref name=hipparcos/>
| prop_mo_ra = −802.803<ref name=Gaia>{{Cite DR2|4472832130942575872}}</ref>
| prop_mo_dec = 10337,77<ref name=hipparcos/>
| prop_mo_dec = 10362.542<ref name=Gaia/>
| parallax = 547.451
| parallax = 547.4506
| p_error = 0.290
| p_error = 0.2899
| parallax_footnote =
| parallax_footnote =<ref name=Gaia/>
| dist_ly =
| dist_ly =
| dist_pc =
| dist_pc =
| absmag_v = 13,21<ref name=koen/>
| absmag_v = 13.21<ref name=koen/>
}}
}}
{{Starbox detail
{{Starbox detail
| source = <!--[source url]-->
| source = <!--[source url]-->
| mass = 0,144<ref name=al36_3_220/>
| mass = 0.144<ref name=al36_3_220/>
| radius = {{nowrap|0,196 ± 0,008}}<ref name=aaa505_1_205/>
| radius = {{nowrap|0.196 ± 0.008}}<ref name=aaa505_1_205/>
| gravity = <!--Surface gravity (given as the base 10 logarithm expressed in cgs units)-->
| gravity = <!--Surface gravity (given as the base 10 logarithm expressed in cgs units)-->
| luminosity_visual = 0,0004<ref name="Dawson" />
| luminosity_visual = 0.0004<ref name="Dawson" />
| luminosity_bolometric = 0,0035<ref name="Dawson" />
| luminosity_bolometric = 0.0035<ref name="Dawson" />
| temperature = 3.134 ± 102<ref name="Dawson" />
| temperature = 3,134 ± 102<ref name="Dawson" />
| metal = 10–32% [[Matahari]]<ref name="Gizis">{{cite journal | author = Gizis, John E. |date=February 1997| title = M-Subdwarfs: Spectroscopic Classification and the Metallicity Scale | journal = The Astronomical Journal | bibcode = 1997AJ....113..806G | volume = 113 | issue = 2 | page = 820 | doi=10.1086/118302|arxiv = astro-ph/9611222 }}</ref>
| metal = 10–32% [[Matahari]]<ref name="Gizis">{{cite journal | author = Gizis, John E. |date=February 1997| title = M-Subdwarfs: Spectroscopic Classification and the Metallicity Scale | journal = The Astronomical Journal | bibcode = 1997AJ....113..806G | volume = 113 | issue = 2 | page = 820 | doi=10.1086/118302|arxiv = astro-ph/9611222 }}</ref>
| rotation = 130,4 [[hari|h]]<ref name="Benedict1998" />
| rotation = 130.4 [[hari|h]]<ref name="Benedict1998" />
| age = ≈ 10 miliar<ref name="Riedel2005" />
| age_gyr = ≈ 10<ref name="Riedel2005" />
}}
}}
{{Starbox catalog
{{Starbox catalog
Baris 79: Baris 79:
}}
}}
{{OrbitboxPlanet
{{OrbitboxPlanet
| exoplanet = [[Barnard's Star b|b]]
| exoplanet = [[Bintang Barnard b|b]]
| mass_earth = ≥{{Val|3.23|0.44}}
| mass_earth = ≥{{Val|3.23|0.44}}
| period = {{Val|232.80|0.38|0.41}}
| period = {{Val|232.80|0.38|0.41}}
Baris 89: Baris 89:


== Referensi ==
== Referensi ==
{{Reflist}}
{{Reflist|30em|refs=
<ref name=an230_77>{{cite journal | title=Einweißer Stern mit bedeutender absoluter Größe | last=Perepelkin | first=E. | journal=Astronomische Nachrichten | volume=230 | issue=4 | page=77 |date=April 1927 | language=German | bibcode=1927AN....230...77P | doi=10.1002/asna.19272300406}}</ref>

<ref name=rukl1999>{{cite book | first=Antonin | last=Rukl | year=1999 | title=Constellation Guidebook | page=158 | publisher=Sterling Publishing | isbn=978-0-8069-3979-7 }}</ref>

<ref name=bis11_12_170>{{cite journal | title=Barnard's Star and its Perturbations | journal=[[Spaceflight (magazine)|Spaceflight]] | volume=11 | page=170 | year=1969 }}</ref>

<ref name=aaa505_1_205>{{citation | last1=Demory | first1=B.-O. | last2=Ségransan | first2=D. | last3=Forveille | first3=T. | last4=Queloz | first4=D. | last5=Beuzit | first5=J.-L. | last6=Delfosse | first6=X. | last7=di Folco | first7=E. | last8=Kervella | first8=P. | last9=Le Bouquin | first9=J.-B. | last10=Perrier | first10=C. | last11=Benisty | first11=M. | last12=Duvert | first12=G. | last13=Hofmann | first13=K.-H. | last14=Lopez | first14=B. | last15=Petrov | first15=R. | title=Mass-radius relation of low and very low-mass stars revisited with the VLTI | journal=Astronomy and Astrophysics | volume=505 | issue=1 | pages=205–215 |date=October 2009 | doi=10.1051/0004-6361/200911976 | bibcode=2009A&A...505..205D |arxiv = 0906.0602 | display-authors=1 }}</ref>

<ref name="Kaler">{{cite web|first=James B. |last=Kaler |url=http://www.astro.uiuc.edu/~kaler/sow/barnard.html |title=Barnard's Star (V2500 Ophiuchi) |date=November 2005 |work=Stars |publisher=James B. Kaler |accessdate=12 July 2018 |archiveurl=https://web.archive.org/web/20060905110505/http://www.astro.uiuc.edu/~kaler/sow/barnard.html |archivedate=5 September 2006 |url-status=dead }}</ref>

}}


{{bintang-stub}}
{{bintang-stub}}

Revisi terkini sejak 8 Agustus 2020 06.35

Bintang Barnard

Lokasi Bintang Barnard, 2006
Data pengamatan
Epos J2000.0      Ekuinoks J2000.0
Rasi bintang Ofiukus
Pengucapan /ˈbɑːrnərdz/
Asensio rekta  17j 57m 48.49803d[1]
Deklinasi  +04° 41′ 36.2072″[1]
Magnitudo tampak (V) 9.511[2]
Ciri-ciri
Kelas spektrum M4.0V[3]
Magnitudo semu (U) 12.497[2]
Magnitudo semu (B) 11.240[2]
Magnitudo semu (R) 8.298[2]
Magnitudo semu (I) 6.741[2]
Magnitudo semu (J) 5.24[4]
Magnitudo semu (H) 4.83[4]
Magnitudo semu (K) 4.524[4]
Indeks warna U−B 1.257[2]
Indeks warna B−V 1.713[2]
Indeks warna V−R 1.213[2]
Indeks warna R−I 1.557[2]
Jenis variabel BY Draconis[5]
Astrometri
Kecepatan radial (Rv)−110.6 ± 0.2[6] km/s
Gerak diri (μ) RA: −802.803[7] mdb/thn
Dek.: 10362.542[7] mdb/thn
Paralaks (π)547,4506±0,2899[7] mdb
Jarak5,958 ± 0,003 tc
(1,8266 ± 0,0010 pc)
Magnitudo mutlak (MV)13.21[2]
Detail
Massa0.144[8] M☉
Radius0.196 ± 0.008[9] R☉
Luminositas (bolometrik)0.0035[10] L☉
Luminositas (visual, LV)0.0004[10] L☉
Suhu3,134 ± 102[10] K
Metalisitas10–32% Matahari[11]
Rotasi130.4 h[12]
Usia≈ 10[13] gigatahun
Penamaan lain
"Barnard's Runaway Star", "Greyhound of the Skies",[14] BD+04°3561a, GCTP 4098.00, Gl 140-024, Gliese 699, HIP 87937, LFT 1385, LHS 57, LTT 15309, Munich 15040, Proxima Ophiuchi,[15] V2500 Ophiuchi, Velox Barnardi,[16] Vyssotsky 799
Referensi basis data
SIMBADdata
ARICNSdata

Bintang Barnard (Nama lain: Velox Barnadi / V2500 Oph / HIP 87937 / GJ 699) adalah bintang katai merah yang berjarak 5,95 tahun cahaya dari bumi dan bintang ini hanya memiliki massa yang kecil, yaitu 0.17 Massa matahari. ditemukan oleh Astronom E.E. Barnard

Bintang Barnard merupakan bintang terdekat kedua setelah sistem bintang Centauri (Alpha Centauri, Beta Centauri, dan Proxima Centauri) dan terletak di Rasi bintang Ophiuchus, tepatnya di barat Beta Ophiuchi.

gerakan bintang barnard dari tahun 2001-2010

Bintang ini sudah berumur sekitar 11-12 Milliar tahun (sekitar 2x lipat Matahari). Variasi Periodik kecil pada cahaya bintang menujukkan bahwa bintang ini berotasi sangat lambat, sekitar 130 hari sekali rotasi.

Planet

[sunting | sunting sumber]
Sistem keplanetan Bintang Barnard[17]
Anggota
(diurut dari bintang) 		Massa Sumbu semimayor
(AU) 		Periode orbit
(hari) 		Eksentrisitas Inklinasi Jari-jari
b ≥3,23±0,44 M⊕ 0,404±0,018 232,80+0,38
−0,41 		0,32+0,1
−0,15 		— —

Referensi

[sunting | sunting sumber]
  1. ^ a b Van Leeuwen, F. (2007). "Validation of the new Hipparcos reduction". Astronomy and Astrophysics. 474 (2): 653–664. arXiv:0708.1752 alt=Dapat diakses gratis. Bibcode:2007A&A...474..653V. doi:10.1051/0004-6361:20078357. 
  2. ^ a b c d e f g h i j Koen, C.; Kilkenny, D.; Van Wyk, F.; Marang, F. (2010). "UBV(RI)C JHK observations of Hipparcos-selected nearby stars". Monthly Notices of the Royal Astronomical Society. 403 (4): 1949. Bibcode:2010MNRAS.403.1949K. doi:10.1111/j.1365-2966.2009.16182.x. 
  3. ^ Gizis, John E. (1997). "M-Subdwarfs: Spectroscopic Classification and the Metallicity Scale". The Astronomical Journal. 113: 806–822. arXiv:astro-ph/9611222 alt=Dapat diakses gratis. Bibcode:1997AJ....113..806G. doi:10.1086/118302. 
  4. ^ a b c Cutri, R. M.; Skrutskie, M. F.; Van Dyk, S.; Beichman, C. A.; Carpenter, J. M.; Chester, T.; Cambresy, L.; Evans, T.; Fowler, J.; Gizis, J.; Howard, E.; Huchra, J.; Jarrett, T.; Kopan, E. L.; Kirkpatrick, J. D.; Light, R. M.; Marsh, K. A.; McCallon, H.; Schneider, S.; Stiening, R.; Sykes, M.; Weinberg, M.; Wheaton, W. A.; Wheelock, S.; Zacarias, N. (2003). "VizieR Online Data Catalog: 2MASS All-Sky Catalog of Point Sources (Cutri+ 2003)". VizieR On-line Data Catalog: II/246. Originally Published in: 2003yCat.2246....0C. 2246: 0. Bibcode:2003yCat.2246....0C. 
  5. ^ Samus, N. N.; Durlevich, O. V.; et al. (2009). "VizieR Online Data Catalog: General Catalogue of Variable Stars (Samus+ 2007-2013)". VizieR On-line Data Catalog: B/gcvs. Originally Published in: 2009yCat....102025S. 1: B/gcvs. Bibcode:2009yCat....102025S. 
  6. ^ Bobylev, Vadim V. (March 2010). "Searching for Stars Closely Encountering with the Solar System". Astronomy Letters. 36 (3): 220–226. arXiv:1003.2160 alt=Dapat diakses gratis. Bibcode:2010AstL...36..220B. doi:10.1134/S1063773710030060. 
  7. ^ a b c Brown, A. G. A.; et al. (kolaborasi Gaia) (Agustus 2018). "Gaia Data Release 2: Summary of the contents and survey properties". Astronomy & Astrophysics. 616. A1. arXiv:1804.09365 alt=Dapat diakses gratis. Bibcode:2018A&A...616A...1G alt=Dapat diakses gratis. doi:10.1051/0004-6361/201833051 alt=Dapat diakses gratis.  Catatan Gaia DR2 untuk sumber tersebut di VizieR.
  8. ^ Kesalahan pengutipan: Tag <ref> tidak sah; tidak ditemukan teks untuk ref bernama al36_3_220
  9. ^ Demory, B.-O.; et al. (October 2009), "Mass-radius relation of low and very low-mass stars revisited with the VLTI", Astronomy and Astrophysics, 505 (1): 205–215, arXiv:0906.0602 alt=Dapat diakses gratis, Bibcode:2009A&A...505..205D, doi:10.1051/0004-6361/200911976 
  10. ^ a b c Kesalahan pengutipan: Tag <ref> tidak sah; tidak ditemukan teks untuk ref bernama Dawson
  11. ^ Gizis, John E. (February 1997). "M-Subdwarfs: Spectroscopic Classification and the Metallicity Scale". The Astronomical Journal. 113 (2): 820. arXiv:astro-ph/9611222 alt=Dapat diakses gratis. Bibcode:1997AJ....113..806G. doi:10.1086/118302. 
  12. ^ Kesalahan pengutipan: Tag <ref> tidak sah; tidak ditemukan teks untuk ref bernama Benedict1998
  13. ^ Kesalahan pengutipan: Tag <ref> tidak sah; tidak ditemukan teks untuk ref bernama Riedel2005
  14. ^ "Barnard's Star and its Perturbations". Spaceflight. 11: 170. 1969. 
  15. ^ Perepelkin, E. (April 1927). "Einweißer Stern mit bedeutender absoluter Größe". Astronomische Nachrichten (dalam bahasa German). 230 (4): 77. Bibcode:1927AN....230...77P. doi:10.1002/asna.19272300406. 
  16. ^ Rukl, Antonin (1999). Constellation Guidebook. Sterling Publishing. hlm. 158. ISBN 978-0-8069-3979-7. 
  17. ^ Anglada-Escudé, G.; Wang, S. X.; Tsapras, Y.; Mascareño, A. Suárez; Street, R. A.; Staab, D.; Shectman, S. A.; Seifert, W.; Schweitzer, A. (2018-11-14). "A candidate super-Earth planet orbiting near the snow line of Barnard's star" (dalam bahasa Inggris). arXiv:1811.05955v2 alt=Dapat diakses gratis. doi:10.1038/s41586-018-0677-y. 
Kesalahan pengutipan: Tag <ref> dengan nama "Kaler" yang didefinisikan di <references> tidak digunakan pada teks sebelumnya.
Ikon rintisan

Artikel bertopik bintang ini adalah sebuah rintisan. Anda dapat membantu Wikipedia dengan mengembangkannya.

Diperoleh dari "https://wiki-indonesia.club/w/index.php?title=Bintang_Barnard&oldid=17279942"