| 词条 | HD 35984 |
| 释义 |
| name = HD 35984 }}{{Starbox observe | epoch = J2000 | ra = {{RA|05|29|40.65401}} | dec = {{DEC|+29|11|11.2751}} | appmag_v = 6.20[3] | constell = Auriga }}{{Starbox character | class = F6III[3] | r-i = | v-r = | b-v = +0.45[5] | u-b = +0.02[5] | variable = }}{{Starbox astrometry | radial_v = +13.58[3] | prop_mo_ra = 28.45 | prop_mo_dec = -46.43 | parallax = 11.27 | p_error = 0.59 | parallax_footnote = | absmag_v = 1.50[11] }}{{Starbox detail | mass = 1.76[3] | radius = | luminosity = 1.32[3] | temperature = 6,939[3] | metal_fe = 0.19[3] | gravity = 4.18[3] | rotational_velocity = 40[17] | age_gyr={{val|1.26|0.12}}[18] }}{{Starbox catalog | names = BD+29° 909, HD 35984, HIP 25730, HR 1822, SAO 77205. }}{{Starbox reference | Simbad = HD+35984 }}{{Starbox end}}HD 35984 is star in the northern constellation Auriga. It has an apparent magnitude of 6.20,[3] which, according to the Bortle scale, indicates it is faintly visible to the naked eye from dark rural skies. Parallax measurements by the Hipparcos satellite indicates it lies at a distance of roughly 290 light years away. A stellar classification of F6III suggests that this is an evolved giant star that has consumed the supply of hydrogen at its core.[3] However, X-ray emission, variations in luminosity, and levels of lithium may indicate that this is instead a weak-lined T Tauri star. That is, a low mass pre-main sequence star that is relatively poor in circumstellar matter.[22] References1. ^1 2 3 4 5 6 7 8 9 10 {{citation | last1=Luck | first1=R. Earle | last2=Heiter | first2=Ulrike | title=Giants in the Local Region | journal=The Astronomical Journal | volume=133 | issue=6 | pages=2464–2486 | date=June 2007 | doi=10.1086/513194 | bibcode=2007AJ....133.2464L}} [1][2][3][4][5][6]2. ^1 {{cite journal | last1=Uesugi | first1=Akira | last2=Fukuda | first2=Ichiro | title=Catalogue of rotational velocities of the stars | journal=Contributions from the Institute of Astrophysics and Kwasan Observatory | date=1970 | publisher=University of Kyoto | bibcode=1970crvs.book.....U }} 3. ^1 2 {{citation | last1=Mermilliod | first1=J.-C. | title=Compilation of Eggen's UBV data, transformed to UBV (unpublished) | journal=Catalogue of Eggen's UBV data. SIMBAD | date=1986 | bibcode=1986EgUBV........0M}} 4. ^1 {{citation | last1=Pace | first1=G. | title=Chromospheric activity as age indicator. An L-shaped chromospheric-activity versus age diagram | journal=Astronomy & Astrophysics | volume=551 | id=L8 | pages=4 | date=March 2013 | doi=10.1051/0004-6361/201220364 | bibcode=2013A&A...551L...8P|arxiv = 1301.5651 }} 5. ^1 {{citation | last1=Holmberg | first1=J. | last2=Nordström | first2=B. | last3=Andersen | first3=J. | title=The Geneva-Copenhagen survey of the solar neighbourhood. III. Improved distances, ages, and kinematics | journal=Astronomy and Astrophysics | volume=501 | issue=3 |date=July 2009 | pages=941–947 | doi=10.1051/0004-6361/200811191 | bibcode=2009A&A...501..941H | arxiv=0811.3982}} 6. ^1 {{citation | last1=Li | first1=J. Z. | last2=Hu | first2=J. Y. | title=Newly discovered candidate weak-line T Tauri stars in the surrounding area of the Taurus-Auriga region | journal=Astronomy and Astrophysics Supplement | volume=132 | pages=173–179 | date=October 1998 | doi=10.1051/aas:1998288 | bibcode=1998A&AS..132..173L}} }} External links
6 : Auriga (constellation)|Henry Draper Catalogue objects|Hipparcos objects|F-type giants|HR objects|Durchmusterung objects |
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