| 释义 |
- References
{{Hatnote|Not to be confused with Xi Andromedae or Andromeda II. For the galaxy Andromeda XI (Andromeda 11), see Andromeda XI.}}{{Starbox begin
| name = 11 Andromedae
}}{{Starbox observe
| epoch = J2000
| constell = Andromeda
| ra = {{RA|23|19|29.80701}}[1]
| dec = {{DEC|+48|37|31.1615}}[1]
| appmag_v = 5.44[3]
}}{{Starbox character
| type =
| class = K0 III[4]
| b-v = {{Val|+1.014|0.003}}[3]
| u-b = +0.82[6]
| variable =
}}{{Starbox astrometry
| radial_v = {{Val|+9.99|0.14}}[1]
| prop_mo_ra = +22.597[1]
| prop_mo_dec = +52.689[1]
| parallax = 11.5097
| p_error = 0.0858
| parallax_footnote = [1]
| absmag_v = 0.73[3]
}}{{Starbox detail
| source =
| mass = 2.57[12]
| radius = 12[13]
| luminosity = 62.86[3]
| temperature = 4,874[12]
| metal_fe = {{Val|−0.13|0.07}}[16]
| gravity = 2.61[12]
| rotational_velocity = 1.0[18]
| age_gyr =
}}{{Starbox catalog
| names = {{odlist | F=11 And | BD=+47° 4110 | HD=219945 | HIP=115152 | HR=8874 | SAO=52907 | PPM=64074 | GC=32476 }}
}}{{Starbox reference
| Simbad = 11+And
}}{{Starbox end}}11 Andromedae, abbreviated 11 And, is a single,[20] orange-hued star in the northern constellation of Andromeda. 11 Andromedae is the Flamsteed designation. It has an apparent visual magnitude of 5.44,[3] which is bright enough to be faintly visible to the naked eye. An annual parallax shift of {{Val|11.5|ul=mas}}[1] yields a distance estimate of 283 light years. It is moving further from the Earth with a heliocentric radial velocity of +10 km/s.[1]This is an evolved giant star with a stellar classification of K0 III,[4] which means it has exhausted the supply of hydrogen at its core and turned off the main sequence. It has an estimated 2.57[12] times the mass of the Sun and has expanded to around 12[13] times the Sun's radius. It is radiating 63[3] times the Sun's luminosity from its enlarged photosphere at an effective temperature of 4,874 km/s.[12] References1. ^1 2 3 4 5 6 7 8 {{cite DR2}}
2. ^1 2 {{citation | title=Photoelectric measurements of the lambda 4200 A CN band and the G band in G8-K5 spectra | last1=Griffin | first1=R. F. | last2=Redman | first2=R. O. | journal=Monthly Notices of the Royal Astronomical Society | volume=120 | page=287 | year=1960 | postscript=. | doi=10.1093/mnras/120.4.287 | bibcode=1960MNRAS.120..287G }}
3. ^1 2 3 4 5 6 {{citation | title=XHIP: An extended hipparcos compilation | last1=Anderson | first1=E. | last2=Francis | first2=Ch. | journal=Astronomy Letters | arxiv=1108.4971 | volume=38 | issue=5 | pages=331 | year=2012 | bibcode=2012AstL...38..331A | doi=10.1134/S1063773712050015 | postscript=. }}
4. ^1 {{citation | url=http://webviz.u-strasbg.fr/viz-bin/VizieR-5?-out.add=.&-source=V/50/catalog&recno=8874 | contribution=HR 8874, database entry | title=The Bright Star Catalogue | postscript=. | edition=5th Revised (Preliminary Version) | first1=D. | last1=Hoffleit | first2=W. H. | last2=Warren Jr. | publisher=CDS }} ID V/50. Accessed on line August 21, 2008.
5. ^1 2 {{citation | last1=Pasinetti Fracassini | first1=L. E. | last2=Pastori | first2=L. | last3=Covino | first3=S. | last4=Pozzi | first4=A. | title=Catalogue of Apparent Diameters and Absolute Radii of Stars (CADARS) | edition=Third | journal=Astronomy and Astrophysics | volume=367 | pages=521–524 |date=February 2001 | doi=10.1051/0004-6361:20000451 | bibcode=2001A&A...367..521P | arxiv=astro-ph/0012289 }}
6. ^1 2 3 4 5 {{citation | postscript=. | title=The Lithium Abundances of a Large Sample of Red Giants | display-authors=1 | last1=Liu | first1=Y. J. | last2=Tan | first2=K. F. | last3=Wang | first3=L. | last4=Zhao | first4=G. | last5=Sato | first5=Bun'ei | last6=Takeda | first6=Y. | last7=Li | first7=H. N. | journal=The Astrophysical Journal | arxiv=1404.1687 | volume=785 | issue=2 | id=94 | pages=12 | date=April 2014 | doi=10.1088/0004-637X/785/2/94 | bibcode=2014ApJ...785...94L }}
7. ^1 {{citation | title=The Correlation between Metallicity and Debris Disk Mass | journal=The Astrophysical Journal | display-authors=1 | last1=Gáspár | first1=András | last2=Rieke | first2=George H | last3=Ballering | first3=Nicholas | volume=826 | issue=2 | pages=171 | year=2016 | doi=10.3847/0004-637X/826/2/171 | bibcode=2016ApJ...826..171G | arxiv=1604.07403 | postscript=. }}
8. ^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 }}
9. ^1 {{citation | display-authors=1 | last1=De Medeiros | first1=J. R. | last2=do Nascimento | first2=J. D. Jr. | last3=Sankarankutty | first3=S. | last4=Costa | first4=J. M. | last5=Maia | first5=M. R. G. | title=Rotation and lithium in single giant stars | journal=Astronomy and Astrophysics | postscript=. | volume=363 | pages=239–243 | date=November 2000 | bibcode=2000A&A...363..239D | arxiv=astro-ph/0010273 }}
}}{{Stars of Andromeda}} 7 : K-type giants|Andromeda (constellation)|Durchmusterung objects|Flamsteed objects|Henry Draper Catalogue objects|Hipparcos objects|HR objects |