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{{Short description|Star in the constellation Ara}}
{{Starbox begin
| name =
}}
{{Starbox image
| image
{{Location mark
|image=Ara constellation map.svg|alt=|float=center|width=240
|label=|position=right
|mark=Red circle.svg|mark_width=10|mark_link=ι Arae
| caption = The location of ι Arae (circled)▼
|x=542|y=352
}}
}}
{{Starbox observe
| epoch = J2000
| ra = {{RA|17|23|16.
| dec = {{DEC|
| appmag_v = 5.
| constell = [[Ara (constellation)|Ara]]
}}
{{Starbox character
| class = B2 IVe + sdO<ref name=wang>{{Cite journal |last1=Wang |first1=Luqian |last2=Gies |first2=Douglas R. |last3=Peters |first3=Geraldine J. |last4=Han |first4=Zhanwen |date=April 2023 |title=The Orbital and Physical Properties of Five Southern Be+sdO Binary Systems |journal=The Astronomical Journal |language=en |volume=165 |issue=5 |pages=203 |doi=10.3847/1538-3881/acc6ca |doi-access=free |arxiv=2303.12616 |bibcode=2023AJ....165..203W |issn=1538-3881}}</ref>
| class = B2 IIIne<ref name=apj157_313/>▼
| r-i =
| v-r =
| b-v =
| u-b =
| variable = [[
}}
{{Starbox astrometry
| radial_v =
| prop_mo_ra =
| prop_mo_dec =
| parallax = 3.
| p_error = 0.
| parallax_footnote = <ref name=
| absmag_v = −2.06<ref name=Anderson2012/>
}}
{{Starbox orbit
| reference = <ref name=wang/>
| period_unitless = 176.17 ± 0.04 d
| periastron = HJD 2458654.2 ± 0.5
| k1 = 5.80 ± 0.06
| k2 = 57.6 ± 0.6
| inclination = 46 ± 6
}}
{{Starbox detail
| component1 = ι Ara A
| mass = {{
|
| temperature =
| metal_fe =
| gravity = 4.
| rotational_velocity =
| age_myr = {{
| component2 = ι Ara B
| mass2 = {{val|1.06|0.29}}<ref name=wang/>
| temperature2 = 33,800<ref name=wang2021>{{cite journal | doi= 10.3847/1538-3881/abf144 | doi-access= free | title= The Detection and Characterization of Be+sdO Binaries from HST/STIS FUV Spectroscopy | date= 2021 | last1= Wang | first1= Luqian | last2= Gies | first2= Douglas R. | last3= Peters | first3= Geraldine J. | last4= Götberg | first4= Ylva | last5= Chojnowski | first5= S. Drew | last6= Lester | first6= Kathryn V. | last7= Howell | first7= Steve B. | journal= The Astronomical Journal | volume= 161 | issue= 5 | page= 248 | arxiv= 2103.13642 | bibcode= 2021AJ....161..248W }}</ref>
| radius2 = {{val|0.61|0.09}}<ref name=wang2021/>
| luminosity2 = 437<!-- log(L) = 2.64 --><ref name=wang2021/>
}}
{{Starbox catalog
| names = ι Ara, [[Durchmusterung|CD]]
}}
{{Starbox reference
| Simbad = iot+Ara
}}
{{Starbox end}}
'''Iota Arae''',
This is an [[stellar evolution|evolved]] [[
[[File:IotaAraLightCurve.png|thumb|left|A [[light curve]] for Iota Arae, plotted from ''[[Transiting Exoplanet Survey Satellite|TESS]]'' data<ref name=MAST/>]]
Iota Arae has around 8.3
The [[General Catalog of Variable Stars]] classifies it as a BE variable star, ranging from [[Photometric system#Photometric letters|visual]] magnitude 5.18 to 5.26 with a period of 13.36 hours.<ref name=gcvs/> In a study of the ''[[Hipparcos]]'' data, it was found to vary in brightness by 0.054 in magnitude with no clear period.<ref name=aaa507_2_11411201/>
{{clear left}}
==References==
{{reflist|refs=
<ref name=dr3>{{cite Gaia DR3|5950328750846409856}}</ref>
<ref name=zorec2016>{{cite journal
| title=Critical study of the distribution of rotational velocities of Be stars. I. Deconvolution methods, effects due to gravity darkening, macroturbulence, and binarity
| journal=Astronomy & Astrophysics | display-authors=1
| last1=Zorec | first1=J. | last2=Frémat | first2=Y.
| last3=Domiciano de Souza | first3=A. | last4=Royer | first4=F.
| last5=Cidal | first5=L. | last6=Hubert | first6=A. -M.
| last7=Seemann | first7=T. | last8=Martayan | first8=C.
| last9=Cochetti | first9=Y. R. | last10=Arias | first10=M. L.
| last11=Aidelman | first11=Y. | last12=Stee | first12=P.
| volume=595 | date=November 2016 | pages=26
| bibcode=2016A&A...595A.132Z | doi=10.1051/0004-6361/201628760 | doi-access=free | hdl=11336/37946 | hdl-access=free }}</ref>
<ref name=gcvs>{{cite journal|bibcode=2009yCat....102025S|title=VizieR Online Data Catalog: General Catalogue of Variable Stars (Samus+ 2007-2013)|journal=VizieR On-line Data Catalog: B/GCVS. Originally Published in: 2009yCat....102025S|volume=1|display-authors=etal|last1=Samus|first1=N. N.|last2=Durlevich|first2=O. V.|year=2009}}</ref>
<ref name=rgcrv1966>{{citation | last=Evans | first=D. S. | date=June 20–24, 1966 | editor1-first=Batten | editor1-last=Alan Henry | editor2-first=Heard | editor2-last=John Frederick | contribution=The Revision of the General Catalogue of Radial Velocities | title=Determination of Radial Velocities and their Applications, Proceedings from IAU Symposium no. 30 | location=University of Toronto | publisher=International Astronomical Union | bibcode=1967IAUS...30...57E | postscript=. }}</ref>▼
<ref name=MAST>{{cite web |title=MAST: Barbara A. Mikulski Archive for Space Telescopes |url=https://mast.stsci.edu/portal/Mashup/Clients/Mast/Portal.html |publisher=Space Telescope Science Institute |access-date=8 December 2021}}</ref>
<ref name=Anderson2012>{{cite journal
| 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 }}</ref>
▲<ref name=rgcrv1966>{{
<ref name=
<ref name=
<ref name=aaa507_2_11411201>{{
<ref name=csiro>{{
<ref name=SIMBAD>{{
}}
Line 88 ⟶ 127:
{{Stars of Ara}}
[[Category:Henry Draper Catalogue objects]]▼
{{DEFAULTSORT:Iota Arae}}
▲[[Category:Henry Draper Catalogue objects|157042]]
[[Category:Bayer objects|Arae, Iota]]
[[Category:Ara (constellation)]]
[[Category:B-type
[[Category:
[[Category:Spectroscopic binaries]]
[[Category:Durchmusterung objects|BD-47 11484]]
[[Category:Hipparcos objects|085079]]
[[Category:Bright Star Catalogue objects|6451]]
|