Star in the constellation Lacerta
11 Lacertae is astar in the northernconstellation ofLacerta . It is visible to the naked eye as a faint orange-hued star with anapparent visual magnitude of 4.46.[ 3] [ 2] light years and has anabsolute magnitude -0.54.[ 6] radial velocity of −10.9 km/s.[ 5]
This is anevolved giant star with astellar classification of K2.5 III.[ 4] red clump giant, meaning it is fusing helium in its core after passing through thered giant branch .[ 7] [ 7] mass of the Sun and has expanded to 39 times theSun's radius .[ 8] [ 9] Sun's luminosity from its enlargedphotosphere at aneffective temperature of 4,352 K.[ 10]
^ Roman, N. G. (1987)."Identification of a Constellation from a Position" . Retrieved2006-12-26 . ^a b c d e Vallenari, A.; et al. (Gaia collaboration) (2023)."Gaia Data Release 3. Summary of the content and survey properties" .Astronomy and Astrophysics .674 : A1.arXiv :2208.00211 Bibcode :2023A&A...674A...1G .doi :10.1051/0004-6361/202243940 S2CID 244398875 . Gaia DR3 record for this source atVizieR .^a b c d Ducati, J. R. (2002). "VizieR Online Data Catalog: Catalogue of Stellar Photometry in Johnson's 11-color system".CDS/ADC Collection of Electronic Catalogues .2237 .Bibcode :2002yCat.2237....0D . ^a b Keenan, Philip C.; McNeil, Raymond C. (1989). "The Perkins catalog of revised MK types for the cooler stars".Astrophysical Journal Supplement Series .71 : 245.Bibcode :1989ApJS...71..245K .doi :10.1086/191373 . ^a b Famaey, B.; et al. (2005). "Local kinematics of K and M giants from CORAVEL/Hipparcos/Tycho-2 data. Revisiting the concept of superclusters".Astronomy and Astrophysics .430 :165– 186.arXiv :astro-ph/0409579 Bibcode :2005A&A...430..165F .doi :10.1051/0004-6361:20041272 .S2CID 17804304 . ^a b Anderson, E.; Francis, Ch.; Niedzielski, A. (2012). "XHIP: An extended hipparcos compilation".Astronomy Letters .38 (5): 331.arXiv :1108.4971 Bibcode :2012AstL...38..331A .doi :10.1134/S1063773712050015 .S2CID 119257644 . ^a b c d Adamczyk, M.; Deka-Szymankiewicz, B.; Niedzielski, A. (2016). "Masses and luminosities for 342 stars from the PennState-Toruń Centre for Astronomy Planet Search".Astronomy and Astrophysics .587 : A119.arXiv :1510.07495 Bibcode :2016A&A...587A.119A .doi :10.1051/0004-6361/201526628 .S2CID 119299522 . ^a b Baines, Ellyn K.; Thomas Armstrong, J.; Clark, James H.; Gorney, Jim; Hutter, Donald J.; Jorgensen, Anders M.; Kyte, Casey; Mozurkewich, David; Nisley, Ishara; Sanborn, Jason; Schmitt, Henrique R.; Van Belle, Gerard T. (2021)."Angular Diameters and Fundamental Parameters of Forty-four Stars from the Navy Precision Optical Interferometer" .The Astronomical Journal .162 (5): 198.arXiv :2211.09030 Bibcode :2021AJ....162..198B .doi :10.3847/1538-3881/ac2431 ^a b c d Soubiran, C.; Creevey, O. L.; Lagarde, N.; Brouillet, N.; Jofré, P.; Casamiquela, L.; Heiter, U.; Aguilera-Gómez, C.; Vitali, S.; Worley, C.; de Brito Silva, D. (2024-02-01). "Gaia FGK benchmark stars: Fundamental Teff and log g of the third version".Astronomy and Astrophysics .682 : A145.arXiv :2310.11302 Bibcode :2024A&A...682A.145S .doi :10.1051/0004-6361/202347136 .ISSN 0004-6361 . 11 Lacertae's database entry atVizieR .^a b Maldonado, J.; Villaver, E.; Niedzielski, A. (2016). "Evolved stars and the origin of abundance trends in planet hosts".Astronomy and Astrophysics .588 : A98.arXiv :1602.00835 Bibcode :2016A&A...588A..98M .doi :10.1051/0004-6361/201527883 .S2CID 119212009 . ^ Bernacca, P. L.; Perinotto, M. (1970). "A catalogue of stellar rotational velocities".Contributi Osservatorio Astronomico di Padova in Asiago .239 (1): 1.Bibcode :1970CoAsi.239....1B . ^ "11 Lac" .SIMBAD Centre de données astronomiques de Strasbourg . Retrieved2019-02-01 .
