14 Andromedae
{{Short description|Star in the constellation Andromeda}}
{{Starbox begin}}
{{Starbox image
| image=
{{Location mark
|image=Andromeda constellation map.svg|alt=|float=center|width=260
|label=|position=right
|mark=Red circle.svg|mark_width=10|mark_link=14 Andromedae
|x=968|y=410
}}
|caption=Location of 14 Andromedae (circled)
}}
{{Starbox observe
| epoch = J2000.0
| constell = Andromeda
| dec = {{DEC|+39|14|10.3147}}
}}
{{Starbox character
| type = Horizontal branch
| r-i =
| v-r =
| u-b =
}}
{{Starbox astrometry
| radial_v = {{val|−59.81|0.12}}
| prop_mo_ra = +286.898
| prop_mo_dec = {{val|-84.043}}
| parallax = 13.1681
| p_error = 0.0727
}}
{{Starbox detail
| mass = {{Val|0.898|0.069}}, {{Val|1.4|0.2}}
| luminosity = {{Val|58.18|2.55}}
| temperature = {{Val|4483|50|fmt=commas}}
| metal_fe = {{Val|−0.30|0.04}}
| rotational_velocity = {{Val|1.63|0.47}}
| age_gyr = {{Val|3.2|2.1}}, {{Val|13.19|2.04}}
}}
{{Starbox catalog
| names = {{odlist | name=Veritate | F=14 And | BD=+38°5023 | HD=221345 | HIP=116076 | HR=8930 | SAO=73311 | PPM=88889 | 2MASS=J23311742+3914102 | GC=32703 | NSV=14599 }}
}}
{{Starbox reference
| Simbad = 14+And
| NSTED = HR_8930
| EPE = 14+And
}}
{{Starbox end}}
14 Andromedae, abbreviated 14 And, also named Veritate {{IPAc-en|,|v|E|r|I|'|t|ei|t|iː}},{{cite web | url=http://www.pas.rochester.edu/~emamajek/WGSN/IAU-CSN.txt | title=IAU Catalog of Star Names |access-date=28 July 2016}} is a single, orange-hued giant star situated 248 light-years away in the northern constellation of Andromeda. It is dimly visible to the naked eye with an apparent visual magnitude of 5.22. The star is moving closer to the Earth with a heliocentric radial velocity of −60 km/s. In 2008 an extrasolar planet (designated 14 Andromedae b, later named Spe) was discovered to be orbiting the star.
This is a red clump giant with a stellar classification of K0 III, a star that has past the first-giant branch and is now on the horizontal branch, generating energy through helium fusion at its core. The star has expanded to 12.7 times the Sun's radius and is radiating 58 times the Sun's luminosity from its enlarged photosphere at an effective temperature of 4,483 K. Its exact mass and age are still uncertain.
Nomenclature
14 Andromedae is the star's Flamsteed designation. Following its discovery the planet was designated 14 Andromedae b.
In July 2014 the International Astronomical Union launched NameExoWorlds, a process for giving proper names to certain exoplanets and their host stars.[http://www.iau.org/news/pressreleases/detail/iau1404/ NameExoWorlds: An IAU Worldwide Contest to Name Exoplanets and their Host Stars]. IAU.org. 9 July 2014 The process involved public nomination and voting for the new names.{{Cite web |url=http://nameexoworlds.iau.org/process |title=NameExoWorlds The Process |access-date=2015-09-05 |archive-date=2015-08-15 |archive-url=https://web.archive.org/web/20150815025117/http://www.nameexoworlds.iau.org/process |url-status=dead }} In December 2015, the IAU announced the winning names were Veritate for this star and Spe for its planet.[http://www.iau.org/news/pressreleases/detail/iau1514/ Final Results of NameExoWorlds Public Vote Released], International Astronomical Union, 15 December 2015.
The winning names were based on those submitted by the Thunder Bay Centre of the Royal Astronomical Society of Canada[http://www.tbrasc.org/centre-news/ Thunder Bay Amateur Astronomers Name a Planet]); namely 'Veritas' and 'Spes', Latin for 'truth' and 'hope', respectively. (Veritas was also the Roman goddess of truth and Spes was the Roman goddess of hope.) The IAU substituted the ablative forms 'Veritate' and 'Spe', which mean 'where there is truth' and 'where there is hope', respectively. This was because 'Veritas' is the name of an asteroid important for the study of the Solar System.{{Cite web |url=http://nameexoworlds.iau.org/names |title=NameExoWorlds The Approved Names |access-date=2015-12-16 |archive-date=2018-02-01 |archive-url=https://web.archive.org/web/20180201043609/http://nameexoworlds.iau.org/names |url-status=dead }}
In 2016, the IAU organized a Working Group on Star Names (WGSN){{cite web | url=https://www.iau.org/science/scientific_bodies/working_groups/280/ | title=IAU Working Group on Star Names (WGSN)|access-date=22 May 2016}} to catalog and standardize proper names for stars. In its first bulletin of July 2016,{{cite web | url=http://www.pas.rochester.edu/~emamajek/WGSN/WGSN_bulletin1.pdf | title=Bulletin of the IAU Working Group on Star Names, No. 1 |access-date=28 July 2016}} the WGSN explicitly recognized the names of exoplanets and their host stars approved by the Executive Committee Working Group Public Naming of Planets and Planetary Satellites, including the names of stars adopted during the 2015 NameExoWorlds campaign. This star is now so entered in the IAU Catalog of Star Names.
Planetary system
In 2008, an exoplanet was announced to be orbiting the star, detected by the radial velocity method. The planet was found to have a minimum mass of 4.8 Jupiter masses and to be orbiting in a circular orbit that takes 186 days to complete. The planet is one of the few known planets to be orbiting an evolved intermediate-mass star and one of the closest-orbiting (such planets have only been discovered around clump giants).
A 2023 study of planets around evolved stars, while presenting updated parameters for this planet, found that the radial velocity variations are correlated with stellar activity signals, casting doubt on the planet's existence. Based on this, a 2024 study listed it as one of several doubtful planets around giant stars (along with other named planets around 41 Lyncis and 42 Draconis).
{{OrbitboxPlanet begin
}}
{{OrbitboxPlanet hypothetical
| status = disputed
| exoplanet = b (Spe)
| mass = {{val|3.559|0.114|0.122|p=≥}}
| semimajor = 0.775
| period = {{val|186.76|0.11|0.12}}
| eccentricity = 0
}}
{{Orbitbox end}}
See also
References
{{Reflist|refs=
{{cite simbad | title=14 And | access-date=September 19, 2018 }}
{{Cite Gaia DR3|1920113512486282240}}
| 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
| arxiv=0806.2878 | s2cid=14878976 | postscript=. }}
| title=General catalogue of variable stars: Version GCVS 5.1
| 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 | journal=Astronomy Reports
| volume=61 | issue=1 | pages=80 | year=2017 | postscript=.
| doi=10.1134/S1063772917010085 | bibcode=2017ARep...61...80S | s2cid=125853869 }}
| 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
| s2cid=119257644 | postscript=. }}
{{cite journal |last1=Teng |first1=Huan-Yu |last2=Sato |first2=Bun'ei |display-authors=etal |date=August 2023 |title=Revisiting planetary systems in the Okayama Planet Search Program: A new long-period planet, RV astrometry joint analysis, and a multiplicity-metallicity trend around evolved stars |journal=Publications of the Astronomical Society of Japan |volume=75 |issue=6 |pages=1030–1071 |doi=10.1093/pasj/psad056 |arxiv=2308.05343 |bibcode=2023PASJ...75.1030T}}
{{cite journal |last1=Spaeth |first1=Dane |last2=Reffert |first2=Sabine |display-authors=etal |date=September 2024 |title=Non-radial oscillations mimicking a brown dwarf orbiting the cluster giant NGC 4349 No. 127 |journal=Astronomy & Astrophysics |volume=689 |issue= |pages=A91 |doi=10.1051/0004-6361/202450163 |arxiv=2407.21583 |bibcode=2024A&A...689A..91S}}
}}
Further reading
- {{cite journal | title=A new interferometric study of four exoplanet host stars : θ Cygni, 14 Andromedae, υ Andromedae and 42 Draconis | url=https://www.aanda.org/articles/aa/full_html/2012/09/aa19467-12/aa19467-12.html | last1=Ligi | first1=R. | last2=Mourard | first2=D. | last3=Lagrange | first3=A.M. | last4=Perraut | first4=K. | last5=Boyajian | first5=T.| last6=Bério | first6=Ph. | last7=Nardetto | first7=N. | last8=Tallon-Bosc | first8=I. | last9=McAlister | first9=H. | last10=ten Brummelaar | first10=T. | last11=Ridgway | first11=S. | last12=Sturmann | first12=J. | last13=Sturmann | first13=L. | last14=Turner | first14=N. | last15=Farrington | first15=C. |last16=Goldfinger | first16=P.J. | display-authors=1 | journal=Astronomy and Astrophysics | volume=545 | at=A5 | year=2012 | arxiv=1208.3895 | bibcode=2012A&A...545A...5L | doi=10.1051/0004-6361/201219467 | s2cid=10934982 }}
External links
- {{cite encyclopedia |url=http://exoplanet.eu/star.php?st=14+And |archive-url=https://web.archive.org/web/20080803204639/http://exoplanet.eu/star.php?st=14+And |url-status=dead |archive-date=August 3, 2008 |title=Notes for star 14 And |author=Jean Schneider |year=2011 |encyclopedia=Extrasolar Planets Encyclopaedia |access-date=30 September 2011}}
{{Sky|23|31|17.4139|+|39|14|10.313|249.19}}
{{Stars of Andromeda}}
{{DEFAULTSORT:14 Andromedae}}
Category:Horizontal-branch stars
Category:Planetary systems with one confirmed planet