| 词条 | LkCa 15 |
| 释义 |
| name = LkCa 15 }}{{Starbox observe | epoch = J2000.0 | constell = Taurus | ra = {{RA|04|39|17.796}}[1] | dec = {{DEC|+22|21|03.48}}[1] | appmag_v = +11.91[2] }}{{Starbox character | class = K5V[2] | variable = T Tauri[1] }}{{Starbox astrometry | prop_mo_ra = 9.4[1] | prop_mo_dec = -13.2[1] | dist_ly = 473[2] | dist_pc = 145[2] }}{{Starbox detail | source = | age_myr = 2[2] | mass = 0.97 ± 0.03[2] | temperature = 4370[12] | luminosity = 1.22[12] | radius = 1.6[3] }}{{Starbox catalog | names = V1079 Tau, GSC 01278-00193, TYC 1278-193-1[1] }}{{Starbox reference | Simbad = EM*+LkCa+15 }}{{Starbox end}} LkCa 15 is a T Tauri star in the Taurus-Auriga Star Forming Region. These types of stars are relatively young pre-main-sequence stars that show irregular variations in brightness.[4] It has a mass that is about 97% of the Sun,[2] an effective temperature of 4370 K,[5] slightly cooler than the Sun. Its apparent magnitude is 11.91,[2] meaning it is not visible to the naked eye. LkCa 15 is surrounded by a protoplanetary disk, typical of many T Tauri stars.[4] The disk around the star is about 55 times more massive than Jupiter.[6] Small changes in the observed brightness of the disk may be due to a planetary companion; the star likely has a protoplanetary object or exoplanet orbiting it, known as LkCa 15 b[7][8] This name stems from an older survey.[9] References1. ^1 2 3 4 5 {{cite simbad|title=EM* LkCa 15}} {{Stars of Taurus}}{{main-star-stub}}{{var-star-stub}}2. ^1 2 3 4 5 6 7 {{cite web|url=http://exoplanet.eu/catalog/lkca_15_b/|title=Notes on LKCA 15 b|accessdate=26 December 2016}} 3. ^{{cite journal|bibcode=2010ApJ...717..441E|doi=10.1088/0004-637X/717/1/441|arxiv=1005.2365|title=Unveiling the Structure of Pre-Transitional Disks|journal=The Astrophysical Journal|volume=717|pages=441|year=2010|last1=Espaillat|first1=C.|last2=d'Alessio|first2=P.|last3=Hernández|first3=J.|last4=Nagel|first4=E.|last5=Luhman|first5=K. L.|last6=Watson|first6=D. M.|last7=Calvet|first7=N.|last8=Muzerolle|first8=J.|last9=McClure|first9=M.}} 4. ^1 {{cite web|url=http://www.daviddarling.info/encyclopedia/T/TTauri.html|title=Encyclopedia of Science: T Tauri star|accessdate=17 January 2017}} 5. ^1 2 {{Cite journal|doi=10.1051/0004-6361/201322915|bibcode=2014A&A...566A..51T|arxiv=1402.1766|title=The architecture of the Lk Ca 15 transitional disk revealed by high-contrast imaging|journal=Astronomy & Astrophysics|volume=566|pages=A51|year=2014|last1=Thalmann|first1=C.|last2=Mulders|first2=G. D.|last3=Hodapp|first3=K.|last4=Janson|first4=M.|last5=Grady|first5=C. A.|last6=Min|first6=M.|last7=De Juan Ovelar|first7=M.|last8=Carson|first8=J.|last9=Brandt|first9=T.|last10=Bonnefoy|first10=M.|last11=McElwain|first11=M. W.|last12=Leisenring|first12=J.|last13=Dominik|first13=C.|last14=Henning|first14=T.|last15=Tamura|first15=M.}} 6. ^{{Cite journal|doi=10.1086/432712|title=Circumstellar Dust Disks in Taurus‐Auriga: The Submillimeter Perspective|journal=The Astrophysical Journal|volume=631|issue=2|pages=1134|year=2005|last1=Andrews|first1=Sean M.|last2=Williams|first2=Jonathan P.|arxiv = astro-ph/0506187 |bibcode = 2005ApJ...631.1134A }} 7. ^{{Cite journal|doi=10.1088/0004-637x/745/1/5|title=Lk Ca 15: A YOUNG EXOPLANET CAUGHT AT FORMATION?|journal=The Astrophysical Journal|volume=745|pages=5|year=2012|last1=Kraus|first1=Adam L.|last2=Ireland|first2=Michael J.|arxiv = 1110.3808 |bibcode = 2012ApJ...745....5K }} 8. ^{{Cite journal|bibcode=2015Natur.527..342S|arxiv=1511.07456|title=Accreting protoplanets in the Lk Ca 15 transition disk|journal=Nature|volume=527|issue=7578|pages=342|author1=Sallum|first1=S.|last2=Follette|first2=K. B.|last3=Eisner|first3=J. A.|last4=Close|first4=L. M.|last5=Hinz|first5=P.|last6=Kratter|first6=K.|last7=Males|first7=J.|last8=Skemer|first8=A.|last9=MacIntosh|first9=B.|last10=Tuthill|first10=P.|last11=Bailey|first11=V.|last12=Defrère|first12=D.|last13=Morzinski|first13=K.|last14=Rodigas|first14=T.|last15=Spalding|first15=E.|last16=Vaz|first16=A.|last17=Weinberger|first17=A. J.|year=2015|doi=10.1038/nature15761|pmid=26581290}} 9. ^{{Cite journal|doi=10.1086/114039|bibcode=1986AJ.....91..575H|title=A spectroscopic survey of the Taurus-Auriga dark clouds for pre-main-sequence stars having CA II H, K emission|journal=The Astronomical Journal|volume=91|pages=575|year=1986|last1=Herbig|first1=G. H.|last2=Vrba|first2=F. J.|last3=Rydgren|first3=A. E.}} 6 : Pre-main-sequence stars|K-type main-sequence stars|T Tauri stars|Objects with variable star designations|IRAS catalogue objects|2MASS objects |
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