11 Persei
{{Short description|Star in the constellation Perseus}}
{{Starbox begin}}
{{Starbox observe
| constell = Perseus
| dec = {{DEC|+55|06|21.6700}}
}}
{{Starbox character
| class = {{nowrap|B7 III(p?) (Hg?)}}
| u-b =
| variable =
}}
{{Starbox astrometry
| parallax = 7.8022
| p_error = 0.0874
}}
{{Starbox detail
| source =
| luminosity = {{Val|210.4|21.9|19.9}}
}}
{{Starbox catalog
| names = {{odlist | F=11 Per | BD=+54°598 | FK5=2188 | HD=16727 | HIP=12692 | HR=785 | SAO=23555 }}
}}
{{Starbox reference
| Simbad = 11+Per
}}
{{Starbox end}}
11 Persei is a single star in the constellation of Perseus, located about 418 light years away from the Sun. It is visible to the naked eye as a dim, blue-white hued star with an apparent visual magnitude of 5.76.
This is a chemically peculiar mercury-manganese star. Cowley (1972) found a stellar classification of {{nowrap|B7 III(p?) (Hg?)}}, while Hube (1970) had B8 IV, and Appenzeller (1967) showed B6 V. Stellar models indicate this is a young B-type main sequence star with an estimated age of around 51 million years. It has a low rotation rate, showing a projected rotational velocity of 4.50 km/s. The star has 3.8 times the mass of the Sun and is radiating 210 times the Sun's luminosity from its photosphere at an effective temperature of 14,550 K.
References
{{reflist|refs=
{{cite DR2|454385485266854016}}
{{cite simbad | title=11 Per | access-date=2019-03-28 }}
| title=XHIP: An extended hipparcos compilation
| last1=Anderson | first1=E. | last2=Francis | first2=Ch.
| journal=Astronomy Letters
| volume=38 | issue=5 | pages=331 | year=2012
| bibcode=2012AstL...38..331A | doi=10.1134/S1063773712050015
| arxiv=1108.4971 | s2cid=119257644 | postscript=. }}
| 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 | doi-access=free | bibcode=2008MNRAS.389..869E
| postscript=. | arxiv=0806.2878 | s2cid=14878976 }}
| last1=Ghazaryan | first1=S. | last2=Alecian | first2=G.
| title=Statistical analysis from recent abundance determinations in HgMn stars
| journal=Monthly Notices of the Royal Astronomical Society
| volume=460 | issue=2 | pages=1912 | year=2016 | postscript=.
| bibcode=2016MNRAS.460.1912G | doi=10.1093/mnras/stw911 | doi-access=free }}
| last1=Zorec | first1=J. | last2=Royer | first2=F.
| last3=Asplund | first3=Martin | last4=Cassisi | first4=Santi
| last5=Ramirez | first5=Ivan | last6=Melendez | first6=Jorge
| last7=Bensby | first7=Thomas | last8=Feltzing | first8=Sofia
| title=Rotational velocities of A-type stars. IV. Evolution of rotational velocities
| journal=Astronomy and Astrophysics
| volume=537 | pages=A120 | year=2012
| bibcode=2012A&A...537A.120Z | arxiv=1201.2052
| doi=10.1051/0004-6361/201117691 | s2cid=55586789 | postscript=. }}
| display-authors=1 | last1=Tetzlaff | first1=N.
| last2=Neuhäuser | first2=R. | last3=Hohle | first3=M. M.
| title=A catalogue of young runaway Hipparcos stars within 3 kpc from the Sun
| journal=Monthly Notices of the Royal Astronomical Society
| volume=410 | issue=1 | pages=190–200 | date=January 2011
| doi=10.1111/j.1365-2966.2010.17434.x | doi-access=free | postscript=.
| bibcode=2011MNRAS.410..190T | arxiv=1007.4883 | s2cid=118629873 }}
| title=Elemental abundance analyses with Coudé Echelle spectrograms from the TÜBİTAK National Observatory of Turkey: I. The HgMn stars 11 Per, HR 2801, and ν Cnc
| last1=Adelman | first1=S. J. | last2=Yüce | first2=K.
| journal=Astronomische Nachrichten | postscript=.
| volume=331 | issue=8 | pages=785–793 | date=August 2010
| doi=10.1002/asna.201011411 | bibcode=2010AN....331..785A }}
{{citation | display-authors=1
| 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 | s2cid=425754 | postscript=. }}
| last1=Cowley | first1=A.
| title=Spectral classification of the bright B8 stars
| journal=Astronomical Journal | postscript=.
| volume=77 | pages=750–755 |date=November 1972
| doi=10.1086/111348 | bibcode=1972AJ.....77..750C }}
| title=The radial velocities of 335 late B-type stars
| last1=Hube | first1=Douglas P.
| journal=Memoirs of the Royal Astronomical Society
| volume=72 | pages=233–280 | year=1970
| bibcode=1970MmRAS..72..233H | postscript=. }}
| last1=Appenzeller | first1=Immo | postscript=.
| title=MK Spectral Types for 185 Bright Stars
| journal=Publications of the Astronomical Society of the Pacific
| volume=79 | issue=467 | page=102 | date=April 1967
| doi=10.1086/128449 | bibcode=1967PASP...79..102A | doi-access=free }}
| title=New results of magnetic field diagnosis in HgMn stars and normal late B-type stars
| last1=Hubrig | first1=S. | last2=Castelli | first2=F.
| journal=Astronomy and Astrophysics | postscript=.
| volume=375 | pages=963–976 | date=September 2001
| issue=3 | doi=10.1051/0004-6361:20010894 | bibcode=2001A&A...375..963H | doi-access=free }}
| contribution=Emission Line Variability In The HgMn Star 11 Per
| display-authors=1 | last1=Wahlgren | first1=Glenn Michael
| last2=Bohlender | first2=D. | last3=Melendez | first3=M.
| title=American Astronomical Society, AAS Meeting #219
| id=439.04 | date=January 2012 | volume=219 | pages=439.04 | postscript=.
| bibcode=2012AAS...21943904W }}
}}
{{Stars of Perseus}}
{{DEFAULTSORT:11 Persei}}
Category:B-type main-sequence stars
Category:Mercury-manganese stars
Category:Perseus (constellation)