| 词条 | Beta Lacertae |
| 释义 |
| name = β Lacertae}}{{Starbox image | image = | caption = β Lacertae in optical light }}{{Starbox observe | epoch = J2000.0 | constell = Lacerta | ra = {{RA|22|23|33.624}}[1] | dec = {{DEC|+52|13|44.56}}[1] | appmag_v=4.43[3] }}{{Starbox character | class = G8 III | u-b = +0.77[1] | b-v = +1.02[1] | v-r = 0.6[3] | r-i = +0.57[1] }}{{Starbox astrometry | radial_v = −10.4 ± 0.9[3] | prop_mo_ra = {{val|−13.25|0.13}}[1] | prop_mo_dec = {{val|−186.77|0.13}}[1] | parallax = 19.19 | p_error = 0.16 | parallax_footnote = [1] | absmag_v= +0.67[13] }}{{Starbox detail | source = [13] | mass = {{val|0.97|0.21}} | radius = {{val|10.96|0.23}} | luminosity = {{val|57.7|3.0}} | metal_fe = −0.33 | gravity = 2.43 | temperature = {{val|4803|75}} | rotational_velocity = < 17[1] | age_gyr = {{val|6.76|3.59}} }}{{Starbox catalog | names = β Lac, Beta Lacertae, Beta Lac, 3 Lacertae, 3 Lac, BD+51 3358, FK5 844, GC 31310, HD 212496, HIP 110538, HR 8538, NLTT 53741, PPM 40598, SAO 34395.[3] }}{{Starbox reference | Simbad = beta+lac }}{{Starbox end}}Beta Lacertae (Beta Lac, β Lacertae, β Lac) is the fourth-brightest star in the constellation of Lacerta. Based upon an annual parallax shift of 19.19 mas,[1] it is 170 light years distant from Earth. At that distance, the visual magnitude is diminished by an extinction factor of 0.17 due to interstellar dust.[13] This is an evolved G-type giant with an apparent visual magnitude of approximately 4.43.[3] It is a red clump[25] star and the primary component of a suspected binary system, with the pair having an angular separation of 0.2 arc seconds.[26] NamingIn Chinese, {{lang|zh|螣蛇}} ({{lang|zh-Latn|Téng Shé}}), meaning Flying Serpent, refers to an asterism consisting of β Lacertae, α Lacertae, 4 Lacertae, π2 Cygni, π1 Cygni, HD 206267, ε Cephei, σ Cassiopeiae, ρ Cassiopeiae, τ Cassiopeiae, AR Cassiopeiae, 9 Lacertae, 3 Andromedae, 7 Andromedae, 8 Andromedae, λ Andromedae, κ Andromedae, ι Andromedae, and ψ Andromedae. Consequently, β Lacertae itself is known as {{lang|zh|螣蛇十}} ({{lang|zh-Latn|Téng Shé shí}}, {{lang-en|the Tenth Star of Flying Serpent}})[2] References1. ^1 2 3 HR 8538, database entry, The Bright Star Catalogue, 5th Revised Ed. (Preliminary Version), D. Hoffleit and W. H. Warren, Jr., CDS ID V/50. Accessed on line November 17, 2008. [3][4][5][6][7]2. ^{{zh icon}} AEEA (Activities of Exhibition and Education in Astronomy) 天文教育資訊網 2006 年 7 月 7 日 3. ^1 {{citation | last1=Eggleton | first1=P. P. | last2=Tokovinin | first2=A. A. | title=A catalogue of multiplicity among bright stellar systems | journal=Monthly Notices of the Royal Astronomical Society | volume=389 | issue=2 | pages=869–879 | date=September 2008 | doi=10.1111/j.1365-2966.2008.13596.x | postscript=. | bibcode=2008MNRAS.389..869E | arxiv=0806.2878 }} 4. ^1 {{citation | display-authors=1 | last1=Mishenina | first1=T. V. | last2=Bienaymé | first2=O. | last3=Gorbaneva | first3=T. I. | last4=Charbonnel | first4=C. | last5=Soubiran | first5=C. | last6=Korotin | first6=S. A. | last7=Kovtyukh | first7=V. V. | title=Elemental abundances in the atmosphere of clump giants | journal=Astronomy and Astrophysics | volume=456 | issue=3 | pages=1109–1120 | date=September 2006 | doi=10.1051/0004-6361:20065141 | bibcode=2006A&A...456.1109M | arxiv=astro-ph/0605615 | postscript=. }} 5. ^1 2 3 4 5 {{cite simbad | title=bet Lac | accessdate=November 17, 2008}} 6. ^1 2 3 {{citation | display-authors=1 | last1=Takeda | first1=Yoichi | last2=Sato | first2=Bun'ei | last3=Murata | first3=Daisuke | title=Stellar Parameters and Elemental Abundances of Late-G Giants | journal=Publications of the Astronomical Society of Japan | date=August 2008 | volume=60 | issue=4 | pages=781–802 | bibcode=2008PASJ...60..781T | arxiv=0805.2434 | doi=10.1093/pasj/60.4.781 | postscript=. }} 7. ^1 2 3 4 5 6 {{cite journal | title=Validation of the new Hipparcos reduction | url=http://www.aanda.org/articles/aa/full/2007/41/aa8357-07/aa8357-07.html | last1=van Leeuwen | first1=F. | journal=Astronomy and Astrophysics | volume=474 | issue=2 | pages=653–664 | year=2007 | arxiv=0708.1752 | bibcode=2007A&A...474..653V | doi=10.1051/0004-6361:20078357 }}Vizier catalog entry }}{{Stars of Lacerta}} 9 : G-type giants|Horizontal-branch stars|Lacerta (constellation)|Bayer objects|Durchmusterung objects|Flamsteed objects|Henry Draper Catalogue objects|Hipparcos objects|HR 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。