| 词条 | 1 Lacertae |
| 释义 |
| name = 1 Lacertae }}{{Starbox observe | epoch = J2000.0 | constell = Lacerta | ra = {{RA|22|15|58.17673}} | dec = {{DEC|+37|44|55.4385}} | appmag_v = 4.15[3] }}{{Starbox character | class = K3 II-III[4] | b-v = +1.43[3] | u-b = +1.70[3] | variable = }}{{Starbox astrometry | radial_v = −8.58[7] | prop_mo_ra = +8.85 | prop_mo_dec = –0.72 | parallax = 5.25 | p_error = 0.23 | parallax_footnote = | absmag_v = {{Val|−2.61|0.27|0.24}}[11] }}{{Starbox detail | source = [12] | mass = {{Val|4.16|0.28}} | radius = {{Val|69.01|3.32|3.07}} | luminosity = {{Val|1453|147|fmt=commas}} | gravity = 2.15 | temperature = {{Val|4288|62|fmt=commas}} | metal_fe = −0.01 | rotational_velocity = 10[13] | age_myr = {{Val|170|30}} }}{{Starbox catalog | names = {{odlist | V=NSV 25864 | F=1 Lac | BD=+37° 4526 | FK5= | HD=211388 | HIP=109937 | HR=8498 | SAO=72191 }}[14] }}{{Starbox reference | Simbad = 1+Lac }}{{Starbox end}}1 Lacertae is a solitary[15] star in the northern constellation of Lacerta. It is visible to the naked eye with an apparent visual magnitude of 4.15.[3] Based upon measurements by the Hipparcos spacecraft, this star is located at a distance of roughly 420 light years. It is moving further from the Earth with a heliocentric radial velocity of −8.6 km/s.[7] A stellar classification of K3 II-III[4] suggests this is an evolved giant star/bright giant hybrid. It is 170 million years old with around four times the mass of the Sun and has expanded to an estimated 69 times the Sun's radius. The star is radiating 1,453 times the Sun's luminosity from its enlarged photosphere at an effective temperature of 4288 K, giving it the orange-hued glow of a K-type star.[20] The star was once a suspected variable, but this was later rescinded.[21] References1. ^1 {{citation | display-authors=1 | last1=Samus | first1=N. N. | last2=Kazarovets | first2=E. V. | last3=Durlevich | first3=O. V. | last4=Kireeva | first4=N. N. | last5=Pastukhova | first5=E. N. | title=General Catalogue of Variable Stars | version=5.1 | journal=Astronomy Reports | year=2017 | volume=61 | issue=1 | pages=80–88 | url=http://www.sai.msu.su/gcvs/gcvs/ | accessdate=2019-01-27 | bibcode=2017ARep...61...80S | postscript=. }} [1][2][3][4][5][6][7][8][9][10]2. ^1 {{citation | title=1 Lac -- Variable Star | work=SIMBAD Astronomical Database | publisher=Centre de Données astronomiques de Strasbourg | url=http://simbad.u-strasbg.fr/simbad/sim-id?Ident=1+Lacertae | accessdate=2016-03-07 | postscript=. }} 3. ^1 2 {{citation | last1=Herbig | first1=George H. | last2=Spalding | first2=John F., Jr. | title=Axial Rotation and Line Broadening in Stars of Spectral Types F0-K5 | journal=Astrophysical Journal | volume=121 | page=118 | date=January 1955 | doi=10.1086/145969 | bibcode=1955ApJ...121..118H | postscript=. }} 4. ^1 {{cite journal | last1=Bernacca | first1=P. L. | last2=Perinotto | first2=M. | title=A catalogue of stellar rotational velocities | journal=Contributi Osservatorio Astronomico di Padova in Asiago | date=1970 | volume=239 | bibcode=1970CoAsi.239....1B | postscript=. }} 5. ^1 2 3 4 {{citation | last1=Mermilliod | first1=J.-C. | title=Compilation of Eggen's UBV data, transformed to UBV (unpublished) | journal=Catalogue of Eggen's UBV data | publisher=SIMBAD | date=1986 | bibcode=1986EgUBV........0M | postscript=. }} 6. ^1 2 {{citation | display-authors=1 | last1=Famaey | first1=B. | last2=Jorissen | first2=A. | last3=Luri | first3=X. | last4=Mayor | first4=M. | last5=Udry | first5=S. | last6=Dejonghe | first6=H. | last7=Turon | first7=C. | title=Local kinematics of K and M giants from CORAVEL/Hipparcos/Tycho-2 data. Revisiting the concept of superclusters | journal=Astronomy and Astrophysics | volume=430 | pages=165–186 | date=2005 | doi = 10.1051/0004-6361:20041272 | bibcode = 2005A&A...430..165F | postscript=. |arxiv = astro-ph/0409579 }} 7. ^1 {{citation | title = A catalogue of multiplicity among bright stellar systems | last1 = Eggleton | first1 = P. P. | last2 = Tokovinin | first2=A. A. | journal = Monthly Notices of the Royal Astronomical Society | volume = 389 | issue = 2 | pages = 869 | date = 2008 | doi = 10.1111/j.1365-2966.2008.13596.x | bibcode = 2008MNRAS.389..869E | postscript=. |arxiv = 0806.2878 }} 8. ^1 {{citation | display-authors=1 | last1=Carney | first1=Bruce W. | last2=Gray | first2=David F. | last3=Yong | first3=David | last4=Latham | first4=David W. | last5=Manset | first5=Nadine | last6=Zelman | first6=Rachel | last7=Laird | first7=John B. | title=Rotation and Macroturbulence in Metal-Poor Field Red Giant and Red Horizontal Branch Stars | journal=The Astronomical Journal | volume=135 | issue=3 | pages=892–906 |date=March 2008 | doi=10.1088/0004-6256/135/3/892 | bibcode=2008AJ....135..892C | arxiv = 0711.4984 | postscript=. }} 9. ^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= }} 10. ^1 {{citation | title=Fundamental Parameters of 87 Stars from the Navy Precision Optical Interferometer | last1=Baines | first1=E. | last2=Schmitt | first2=H. R. | last3=Zavala | first3=R. T. | last4=Hutter | first4=D. | last5=van Belle | first5=G. T. | journal=The Astronomical Journal | volume=155 | issue=1 | pages=30 | year=2017 | bibcode=2018AJ....155...30B | doi=10.3847/1538-3881/aa9d8b | arxiv=1712.08109 }} }}{{Stars of Lacerta}} 8 : K-type giants|K-type bright giants|Lacerta (constellation)|Durchmusterung objects|Flamsteed objects|Henry Draper Catalogue objects|Hipparcos objects|HR objects |
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