| 词条 | 13 Trianguli |
| 释义 |
| name = 13 Trianguli }}{{Starbox observe | epoch = J2000 | constell = Triangulum | ra = {{RA|02|28|48.49387}} | dec = {{DEC|+29|55|54.3315}} | appmag_v = 5.86[3] }}{{Starbox character | class = G0 V | b-v = +0.58[3] | u-b = +0.01[3] | variable = }}{{Starbox astrometry | radial_v = +40.8[7] | prop_mo_ra = –66.53 | prop_mo_dec = +71.93 | parallax = 31.84 | p_error = 0.40 | parallax_footnote = | absmag_v = 3.45[11] }}{{Starbox detail | mass = {{nowrap|1.10 ± 0.03}}[11] | radius = | gravity = | metal_fe = –0.24[13] | temperature = 5,846[11] | luminosity = 3.72[11] | rotational_velocity = 3[16] | age_gyr = 6.45[11] }}{{Starbox catalog | names = 13 Tri, BD+29 423, GJ 99.1, HD 15335, HIP 11548, HR 720, SAO 75391.[3] }}{{Starbox reference | Simbad = 13+Tri }}{{Starbox end}} 13 Trianguli is the Flamsteed designation for a star in the northern constellation of Triangulum. It has an apparent visual magnitude of 5.86,[3] so according to the Bortle scale it is faintly visible from dark suburban skies. Measurements made with the Hipparcos spacecraft show an annual parallax shift of 0.03184″, which is equivalent to a distance of around {{Convert|102|ly|pc|abbr=on}} from the Sun. A stellar classification of G0 V indicates this is a main sequence star that is generating energy by fusing hydrogen into helium at its core. It has about 110% of the Sun's mass and shines with 3.72 times the luminosity of the Sun. The stellar atmosphere has an effective temperature of 5,846[11] K, giving it the yellow hue of a G-type star.[23] It appears to be older than the Sun, with an estimated age of 6.45 billion years.[11] In 1994, an astrometric companion was reported at an angular separation of 0.020″. However, follow-up observations reported in 2005 not only failed to recover this object but also returned a null result on a search for planetary companions.[25] The star has been examined for an infrared excess that could indicate the presence of an orbiting debris disk, but no such excess was found.[13] References1. ^1 2 3 4 5 6 7 {{citation | last1=Takeda | first1=Yoichi | title=Fundamental Parameters and Elemental Abundances of 160 F-G-K Stars Based on OAO Spectrum Database | journal=Publications of the Astronomical Society of Japan | volume=59 | issue=2 | pages=335–356 |date=April 2007 | bibcode=2007PASJ...59..335T | postscript=. | doi=10.1093/pasj/59.2.335}} [1][2][3][4][5][6][7]2. ^1 {{citation | display-authors=1 | last1=Nordström | first1=B. | last2=Mayor | first2=M. | last3=Andersen | first3=J. | last4=Holmberg | first4=J. | last5=Pont | first5=F. | last6=Jørgensen | first6=B. R. | last7=Olsen | first7=E. H. | last8=Udry | first8=S. | last9=Mowlavi | first9=N. | title=The Geneva-Copenhagen survey of the Solar neighbourhood. Ages, metallicities, and kinematic properties of ˜14,000 F and G dwarfs | journal=Astronomy and Astrophysics | volume=418 | issue=3 | pages=989–1019 |date=May 2004 | doi=10.1051/0004-6361:20035959 | bibcode=2004A&A...418..989N |arxiv = astro-ph/0405198 | postscript=.}} 3. ^1 {{citation | display-authors=1 | last1=Takeda | first1=Yoichi | last2=Sato | first2=Bun'ei | last3=Kambe | first3=Eiji | last4=Masuda | first4=Seiji | last5=Izumiura | first5=Hideyuki | last6=Watanabe | first6=Etsuji | last7=Ohkubo | first7=Michiko | last8=Yanagisawa | first8=Kenshi | last9=Yasaka | first9=Yoshiro | title=High-Dispersion Spectra Collection of Nearby F--K Stars at Okayama Astrophysical Observatory: A Basis for Spectroscopic Abundance Standards | journal=Publications of the Astronomical Society of Japan | volume=57 | issue=1 | pages=13–25 |date=February 2005 | bibcode=2005PASJ...57...13T | postscript=. | doi=10.1093/pasj/57.1.13}} 4. ^1 2 {{cite journal | display-authors=1 | last1=Maldonado | first1=J. | last2=Eiroa | first2=C. | last3=Villaver | first3=E. | last4=Montesinos | first4=B. | last5=Mora | first5=A. | title=Metallicity of solar-type stars with debris discs and planets | journal=Astronomy & Astrophysics |date=May 2012 | volume=541 | page=A40 | arxiv=1202.5884 | bibcode=2012A&A...541A..40M | doi=10.1051/0004-6361/201218800 }} 5. ^1 {{cite journal | display-authors=1 | last1=van Belle | first1=G. T. | last2=van Belle | first2=G. | last3=Creech-Eakman | first3=M. J. | last4=Coyne | first4=J. | last5=Boden | first5=A. F. | last6=Akeson | first6=R. L. | last7=Ciardi | first7=D. R. | last8=Rykoski | first8=K. M. | last9=Thompson | first9=R. R. | last10=Lane | first10=B. F. | last11=PTI Collaboration | title=The Palomar Testbed Interferometer Calibrator Catalog | journal=The Astrophysical Journal Supplement Series |date=May 2008 | volume=176 | issue=1 | pages=276–292 | arxiv=0711.4194 | bibcode=2008ApJS..176..276V | doi=10.1086/526548 }} 6. ^1 2 3 4 5 {{citation | title=13 Tri -- Star | work=SIMBAD Astronomical Database | publisher=Centre de Données astronomiques de Strasbourg | url=http://simbad.u-strasbg.fr/simbad/sim-id?Ident=13+Trianguli | accessdate=2013-10-13 | postscript=.}} 7. ^1 {{citation |title=The Colour of Stars |date=December 21, 2004 |work=Australia Telescope, Outreach and Education |publisher=Commonwealth Scientific and Industrial Research Organisation |url=http://outreach.atnf.csiro.au/education/senior/astrophysics/photometry_colour.html |accessdate=2012-01-16 |postscript=. |deadurl=yes |archiveurl=https://www.webcitation.org/6630AbtJZ?url=http://outreach.atnf.csiro.au/education/senior/astrophysics/photometry_colour.html |archivedate=March 10, 2012 |df= }} }}{{Stars of Triangulum}}{{Sky|02|28|48.49|+|29|55|54.33}} 8 : Triangulum (constellation)|Flamsteed objects|G-type main-sequence stars|Hipparcos objects|HR objects|Henry Draper Catalogue objects|Durchmusterung objects|Gliese and GJ objects |
| 随便看 |
|
开放百科全书收录14589846条英语、德语、日语等多语种百科知识，基本涵盖了大多数领域的百科知识，是一部内容自由、开放的电子版国际百科全书。