Iota Telescopii: Difference between revisions
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{{short description|Star in the constellation Telescopus}} |
{{short description|Star in the constellation Telescopus}} |
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{{Starbox begin |
{{Starbox begin |
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| name = [[Bayer designation|ι Telescopii]] |
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⚫ | |||
{{Starbox observe |
{{Starbox observe |
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| epoch = [[J2000.0]] |
| epoch = [[J2000.0]] ([[International Celestial Reference System|ICRS]]) |
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| equinox = [[J2000.0]] ([[International Celestial Reference System|ICRS]]) |
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| constell = [[Telescopium]] |
| constell = [[Telescopium]] |
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| ra = {{RA|19|35|12. |
| ra = {{RA|19|35|12.98634}}<ref name = GaiaDR3/> |
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| dec = {{DEC|−48|05|57.1238}}<ref name= |
| dec = {{DEC|−48|05|57.1238}}<ref name = GaiaDR3/> |
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| appmag_v = |
| appmag_v = 4.88{{±|0.01}}<ref name = Tycho2000/> |
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}} |
}} |
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{{Starbox character |
{{Starbox character |
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| class = K0 |
| class = K0 III<ref name = Houk1978/> |
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| b-v = +1.09<ref name=Cousins1966/> |
| b-v = +1.09<ref name = Cousins1966/> |
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| u-b = |
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| r-i = |
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| variable = |
| variable = |
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}} |
}} |
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{{Starbox astrometry |
{{Starbox astrometry |
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| radial_v = +22.3<ref name= |
| radial_v = +22.3{{±|0.8}}<ref name = Gontcharov2006/> |
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| prop_mo_ra = |
| prop_mo_ra = −8.190 |
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| prop_mo_dec = −36. |
| prop_mo_dec = −36.977 |
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⚫ | |||
| parallax = 9.4237 |
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| |
| parallax = 8.6546 |
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| p_error = 0.1055 |
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⚫ | |||
| parallax_footnote = <ref name = GaiaDR3/> |
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| absmag_v = −0.39<ref name=Anderson2012/> |
| absmag_v = −0.39<ref name=Anderson2012/> |
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}} |
}} |
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{{Starbox detail |
{{Starbox detail |
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| source = |
| source = |
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| mass = |
| mass = 2.53{{±|0.19}}<ref name = Ottoni2022/> |
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| radius = {{ |
| radius = 19.7{{±|1.0}}<ref name = Kervella2004/> |
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⚫ | |||
| gravity = 1.88<ref name = McDonald2017/> |
| gravity = 1.88<ref name = McDonald2017/> |
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| |
| temperature = 4,738{{±|55}}<ref name = Ottoni2022/> |
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| metal_fe = +0.01{{±|0.04}}<ref name = Ottoni2022/> |
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⚫ | |||
| age_gyr = |
| age_gyr = |
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⚫ | |||
| temperature = {{Val|4680|87|55|fmt=commas}}<ref name=GaiaDR2/> |
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⚫ | |||
}} |
}} |
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{{Starbox catalog |
{{Starbox catalog |
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| names = {{odlist | |
| names = {{odlist |B = ι Tel|Gould = 64 G. Telescopii|CD = −48° 13161|CPD = −48°10202|FK5 = 735|GC = 27025|HD = 184127|HIP = 96341|HR = 7424|SAO = 229751}}<ref name=SIMBAD/> |
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}} |
}} |
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{{Starbox reference |
{{Starbox reference |
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{{Starbox end}} |
{{Starbox end}} |
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'''ι Telescopii''', [[Romanization of Greek|Latinized]] as '''Iota Telescopii''' and abbreviated |
'''ι Telescopii''', [[Romanization of Greek|Latinized]] as '''Iota Telescopii''' and abbreviated Iota Tel, is a solitary [[star]]<ref name = Eggleton2008/> located in the southern [[constellation]] [[Telescopium]]. It is faintly visible to the [[naked eye]] as a orange-hued star with an [[apparent visual magnitude]] of +4.88.<ref name = Tycho2000/> The star is located roughly 377 [[light year]]s distant from the [[Solar System]] based on [[Gaia DR3]] [[parallax]] measurements<ref name = GaiaDR3/> and it is receding with a [[radial velocity]] of {{val|22.3|ul=km/s}}.<ref name = Gontcharov2006/> At its current distance, Iota Tel's brightness is diminished by 0.19 [[magnitude (astronomy)|magnitude]]s<ref name = Gontcharov2017/> due to [[extinction (astronomy)|interstellar dust]] and it has an [[absolute magnitude]] of −0.39.<ref name=Anderson2012/> |
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This object is an aging [[ |
This object is an aging [[red giant star]] with a [[stellar classification]] of K0 III.<ref name=Houk1978/> At present it has 2.53 times the [[mass of the Sun]],<ref name = Ottoni2022/> but it has expanded to 19.7 times the [[radius of the Sun]].<ref name = Kervella2004/> It is radiating 172 times the [[Sun's luminosity]]<ref name = GaiaDR3/> from its swollen [[photosphere]] at an [[effective temperature]] of {{val|4738|ul=K|fmt=commas}}.<ref name = Ottoni2022/> Iota Tel has a near solar [[metallicity]] at [Fe/H] = +0.01<ref name = Ottoni2022/> and it spins slowly with a [[projected rotational velocity]] of {{val|1.8|ul=km/s}}.<ref name = "De Medeiros2014"/> |
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==References== |
==References== |
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{{reflist|refs= |
{{reflist|refs= |
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<ref name= |
<ref name = GaiaDR3>{{Cite DR3|6659466780952274304}}</ref> |
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<ref name = Tycho2000>{{cite journal | last1 = Høg | first1 = E. | last2 = Fabricius | first2 = C. | last3 = Makarov | first3 = V. V. | last4 = Urban | first4 = S. | last5 = Corbin | first5 = T. | last6 = Wycoff | first6 = G. | last7 = Bastian | first7 = U. | last8 = Schwekendiek | first8 = P. | last9 = Wicenec | first9 = A. | title = The Tycho-2 catalogue of the 2.5 million brightest stars |journal=Astronomy and Astrophysics | date = March 2000 | volume = 355 | pages = L27–L30 | bibcode = 2000A&A...355L..27H | issn = 0004-6361}}</ref> |
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<ref name=scfs>{{citation | display-authors=1 |
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| title=Sixth Catalogue of Fundamental Stars (FK6). Part I. Basic fundamental stars with direct solutions |
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| last1=Wielen | first1=R. | last2=Schwan | first2=H. |
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| last3=Dettbarn | first3=C. | last4=Lenhardt | first4=H. |
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| last5=Jahreiß | first5=H. | last6=Jährling | first6=R. |
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| journal=Veroeffentlichungen des Astronomischen Rechen-Instituts Heidelberg |
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| publisher=Astronomisches Rechen-Institut Heidelberg |
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| issue=35 | year=1999 | volume=35 |
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| page=1 |
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| bibcode=1999VeARI..35....1W | postscript=. }}</ref> |
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<ref name = Eggleton2008>{{cite journal | 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 | date = 11 September 2008 | volume = 389 | issue = 2 | pages = 869–879 | issn = 0035-8711 | eissn = 1365-2966 | doi = 10.1111/j.1365-2966.2008.13596.x | bibcode = 2008MNRAS.389..869E | arxiv = 0806.2878 | s2cid = 14878976 | doi-access = free }}</ref> |
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<ref name=Eggleton2008>{{citation |
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| last1=Eggleton | first1=P. P. | last2=Tokovinin | first2=A. A. |
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| title=A catalogue of multiplicity among bright stellar systems |
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| journal=[[Monthly Notices of the Royal Astronomical Society]] |
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| volume=389 | issue=2 | pages=869–879 | date=September 2008 |
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| doi=10.1111/j.1365-2966.2008.13596.x | bibcode=2008MNRAS.389..869E |
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| arxiv=0806.2878 | s2cid=14878976 | postscript=. }}</ref> |
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<ref name = Houk1978>{{cite book | last1 = Houk | first1 = Nancy | volume = 2 | title = Michigan catalogue of two-dimensional spectral types for the HD stars: Declinations −53° to −40° | year = 1978 | bibcode = 1978mcts.book.....H }}</ref> |
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<ref name=Houk1978>{{citation |
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| title=Michigan catalogue of two-dimensional spectral types for the HD stars |
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| last1=Houk | first1=Nancy | publication-place=Ann Arbor |
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| publisher=Dept. of Astronomy, University of Michigan |
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| year=1978 | bibcode=1978mcts.book.....H | postscript=. }}</ref> |
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<ref name=Cousins1966>{{citation |
<ref name=Cousins1966>{{citation |
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| volume=121 | year=1966 | page=1 | bibcode=1966RGOB..121....1C }}</ref> |
| volume=121 | year=1966 | page=1 | bibcode=1966RGOB..121....1C }}</ref> |
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<ref name = Kervella2004>{{cite journal | last1 = Kervella | first1 = P. | last2 = Thévenin | first2 = F. | last3 = Di Folco | first3 = E. | last4 = Ségransan | first4 = D. | title = The angular sizes of dwarf stars and subgiants. Surface brightness relations calibrated by interferometry | journal = Astronomy & Astrophysics | date = October 2004 | volume = 426 | issue = 1 | pages = 297–307 | issn = 0004-6361 | eissn = 1432-0746 | doi = 10.1051/0004-6361:20035930 | bibcode = 2004A&A...426..297K | arxiv = astro-ph/0404180 | s2cid = 6077801 | doi-access = free}}</ref> |
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<ref name=Anderson2012>{{citation |
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| title=XHIP: An extended hipparcos compilation |
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<ref name = Anderson2012>{{cite journal | last1 = Anderson | first1 = E. | last2 = Francis | first2 = Ch. | title = XHIP: An extended hipparcos compilation | journal = Astronomy Letters | date = May 2012 | volume = 38 | issue = 5 | pages = 331–346 | issn = 1063-7737 | eissn = 1562-6873 | doi = 10.1134/S1063773712050015 | bibcode = 2012AstL...38..331A | arxiv = 1108.4971| s2cid = 119257644 }}</ref> |
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| last1=Anderson | first1=E. | last2=Francis | first2=Ch. |
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| journal=Astronomy Letters |
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<ref name = Gontcharov2017>{{cite journal | last1 = Gontcharov | first1 = George A. | last2 = Mosenkov | first2 = Aleksandr V. | title = Verifying reddening and extinction for Gaia DR1 TGAS main sequence stars | journal = Monthly Notices of the Royal Astronomical Society | date = 28 September 2017 | volume = 472 | issue = 4 | pages = 3805–3820 | issn = 0035-8711 | eissn = 1365-2966 | doi = 10.1093/mnras/stx2219 | bibcode = 2017MNRAS.472.3805G | arxiv = 1709.01160 | s2cid = 118879856 | doi-access = free}}</ref> |
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| volume=38 | issue=5 | pages=331 | year=2012 |
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| bibcode=2012AstL...38..331A | doi=10.1134/S1063773712050015 |
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| arxiv=1108.4971 | s2cid=119257644 | postscript=. }}</ref> |
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<ref name=SIMBAD>{{cite simbad |
<ref name=SIMBAD>{{cite simbad |
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<ref name = McDonald2017>{{Cite journal|last1=McDonald|first1=I.|last2=Zijlstra|first2=A. A.|last3=Watson|first3=R. A.|date=October 2017|title=Fundamental parameters and infrared excesses of Tycho-Gaia stars|bibcode=2017MNRAS.471..770M |journal=Monthly Notices of the Royal Astronomical Society|volume=471|issue=1 |pages=770–791|doi=10.1093/mnras/stx1433|issn=0035-8711|arxiv=1706.02208}}</ref> |
<ref name = McDonald2017>{{Cite journal|last1=McDonald|first1=I.|last2=Zijlstra|first2=A. A.|last3=Watson|first3=R. A.|date=October 2017|title=Fundamental parameters and infrared excesses of Tycho-Gaia stars|bibcode=2017MNRAS.471..770M |journal=Monthly Notices of the Royal Astronomical Society|volume=471|issue=1 |pages=770–791|doi=10.1093/mnras/stx1433|issn=0035-8711|arxiv=1706.02208}}</ref> |
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<ref name = Gontcharov2006>{{cite journal | last1 = Gontcharov | first1 = G. A. | title = Pulkovo Compilation of Radial Velocities for 35,495 Hipparcos stars in a common system | journal = Astronomy Letters | date = November 2006 | volume = 32 | issue = 11 | pages = 759–771 | issn = 1063-7737 | eissn = 1562-6873 | doi = 10.1134/S1063773706110065 | pmid = | bibcode = 2006AstL...32..759G | arxiv = 1606.08053 | s2cid = 119231169 }}</ref> |
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<ref name = Anders2019>{{Cite journal|last1=Anders|first1=F.|last2=Khalatyan|first2=A.|last3=Chiappini|first3=C.|last4=Queiroz|first4=A. B.|last5=Santiago|first5=B. X.|last6=Jordi|first6=C.|last7=Girardi|first7=L.|last8=Brown|first8=A. G. A.|last9=Matijevič|first9=G.|last10=Monari|first10=G.|last11=Cantat-Gaudin|first11=T.|date=August 2019|title=Photo-astrometric distances, extinctions, and astrophysical parameters for Gaia DR2 stars brighter than G = 18|bibcode=2019A&A...628A..94A|journal=Astronomy and Astrophysics|volume=628|pages=A94|doi=10.1051/0004-6361/201935765|issn=0004-6361|arxiv=1904.11302|s2cid=131780028 }}</ref> |
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<ref name = |
<ref name = Ottoni2022>{{cite journal | last1 = Ottoni | first1 = G. | last2 = Udry | first2 = S. | last3 = Ségransan | first3 = D. | last4 = Buldgen | first4 = G. | last5 = Lovis | first5 = C. | last6 = Eggenberger | first6 = P. | last7 = Pezzotti | first7 = C. | last8 = Adibekyan | first8 = V. | last9 = Marmier | first9 = M. | last10 = Mayor | first10 = M. | last11 = Santos | first11 = N. C. | last12 = Sousa | first12 = S. G. | last13 = Lagarde | first13 = N. | last14 = Charbonnel | first14 = C. | title = CORALIE radial-velocity search for companions around evolved stars (CASCADES): I. Sample definition and first results: Three new planets orbiting giant stars | journal = Astronomy & Astrophysics | date = January 2022 | volume = 657 | pages = A87 | doi = 10.1051/0004-6361/202040078 | issn = 0004-6361 | eissn = 1432-0746 | bibcode = 2022A&A...657A..87O | arxiv = 2201.01528 | doi-access = free}}</ref> |
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<ref name = "De Medeiros2014">{{cite journal | last1 = De Medeiros | first1 = J. R. | last2 = Alves | first2 = S. | last3 = Udry | first3 = S. | last4 = Andersen | first4 = J. | last5 = Nordström | first5 = B. | last6 = Mayor | first6 = M. | title = A catalog of rotational and radial velocities for evolved stars V: Southern stars * | journal = Astronomy & Astrophysics | date = January 2014 | volume = 561 | page = A126 | issn = 0004-6361 | eissn = 1432-0746 | doi = 10.1051/0004-6361/201220762 | bibcode = 2014A&A...561A.126D | arxiv = 1312.3474 | doi-access = free | s2cid = 54046583}}</ref> |
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⚫ | |||
}} |
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{{Stars of Telescopium|state=collapsed}} |
{{Stars of Telescopium|state=collapsed}} |
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Revision as of 16:31, 11 April 2023
Observation data Epoch J2000.0 Equinox J2000.0 (ICRS) | |
---|---|
Constellation | Telescopium |
Right ascension | 19h 35m 12.98634s[1] |
Declination | −48° 05′ 57.1238″[1] |
Apparent magnitude (V) | 4.88±0.01[2] |
Characteristics | |
Spectral type | K0 III[3] |
B−V color index | +1.09[4] |
Astrometry | |
Radial velocity (Rv) | +22.3±0.8[5] km/s |
Proper motion (μ) | RA: −8.190 mas/yr[1] Dec.: −36.977 mas/yr[1] |
Parallax (π) | 8.6546 ± 0.1055 mas[1] |
Distance | 377 ± 5 ly (116 ± 1 pc) |
Absolute magnitude (MV) | −0.39[6] |
Details | |
Mass | 2.53±0.19[7] M☉ |
Radius | 19.7±1.0[8] R☉ |
Luminosity | 172+5 −4[1] L☉ |
Surface gravity (log g) | 1.88[9] cgs |
Temperature | 4,738±55[7] K |
Metallicity [Fe/H] | +0.01±0.04[7] dex |
Rotational velocity (v sin i) | 1.8±1.3[10] km/s |
Other designations | |
Database references | |
SIMBAD | data |
ι Telescopii, Latinized as Iota Telescopii and abbreviated Iota Tel, is a solitary star[12] located in the southern constellation Telescopium. It is faintly visible to the naked eye as a orange-hued star with an apparent visual magnitude of +4.88.[2] The star is located roughly 377 light years distant from the Solar System based on Gaia DR3 parallax measurements[1] and it is receding with a radial velocity of 22.3 km/s.[5] At its current distance, Iota Tel's brightness is diminished by 0.19 magnitudes[13] due to interstellar dust and it has an absolute magnitude of −0.39.[6]
This object is an aging red giant star with a stellar classification of K0 III.[3] At present it has 2.53 times the mass of the Sun,[7] but it has expanded to 19.7 times the radius of the Sun.[8] It is radiating 172 times the Sun's luminosity[1] from its swollen photosphere at an effective temperature of 4,738 K.[7] Iota Tel has a near solar metallicity at [Fe/H] = +0.01[7] and it spins slowly with a projected rotational velocity of 1.8 km/s.[10]
References
- ^ a b c d e f g Vallenari, A.; et al. (Gaia collaboration) (2023). "Gaia Data Release 3. Summary of the content and survey properties". Astronomy and Astrophysics. 674: A1. arXiv:2208.00211. Bibcode:2023A&A...674A...1G. doi:10.1051/0004-6361/202243940. S2CID 244398875. Gaia DR3 record for this source at VizieR.
- ^ a b Høg, E.; Fabricius, C.; Makarov, V. V.; Urban, S.; Corbin, T.; Wycoff, G.; Bastian, U.; Schwekendiek, P.; Wicenec, A. (March 2000). "The Tycho-2 catalogue of the 2.5 million brightest stars". Astronomy and Astrophysics. 355: L27–L30. Bibcode:2000A&A...355L..27H. ISSN 0004-6361.
- ^ a b Houk, Nancy (1978). Michigan catalogue of two-dimensional spectral types for the HD stars: Declinations −53° to −40°. Vol. 2. Bibcode:1978mcts.book.....H.
- ^ Cousins, A. W. J.; et al. (1966), "Photoelectric magnitudes and colours of southern stars, II", Royal Observatory Bulletins, 121: 1, Bibcode:1966RGOB..121....1C.
- ^ a b Gontcharov, G. A. (November 2006). "Pulkovo Compilation of Radial Velocities for 35,495 Hipparcos stars in a common system". Astronomy Letters. 32 (11): 759–771. arXiv:1606.08053. Bibcode:2006AstL...32..759G. doi:10.1134/S1063773706110065. eISSN 1562-6873. ISSN 1063-7737. S2CID 119231169.
- ^ a b Anderson, E.; Francis, Ch. (May 2012). "XHIP: An extended hipparcos compilation". Astronomy Letters. 38 (5): 331–346. arXiv:1108.4971. Bibcode:2012AstL...38..331A. doi:10.1134/S1063773712050015. eISSN 1562-6873. ISSN 1063-7737. S2CID 119257644.
- ^ a b c d e f Ottoni, G.; Udry, S.; Ségransan, D.; Buldgen, G.; Lovis, C.; Eggenberger, P.; Pezzotti, C.; Adibekyan, V.; Marmier, M.; Mayor, M.; Santos, N. C.; Sousa, S. G.; Lagarde, N.; Charbonnel, C. (January 2022). "CORALIE radial-velocity search for companions around evolved stars (CASCADES): I. Sample definition and first results: Three new planets orbiting giant stars". Astronomy & Astrophysics. 657: A87. arXiv:2201.01528. Bibcode:2022A&A...657A..87O. doi:10.1051/0004-6361/202040078. eISSN 1432-0746. ISSN 0004-6361.
- ^ a b Kervella, P.; Thévenin, F.; Di Folco, E.; Ségransan, D. (October 2004). "The angular sizes of dwarf stars and subgiants. Surface brightness relations calibrated by interferometry". Astronomy & Astrophysics. 426 (1): 297–307. arXiv:astro-ph/0404180. Bibcode:2004A&A...426..297K. doi:10.1051/0004-6361:20035930. eISSN 1432-0746. ISSN 0004-6361. S2CID 6077801.
- ^ McDonald, I.; Zijlstra, A. A.; Watson, R. A. (October 2017). "Fundamental parameters and infrared excesses of Tycho-Gaia stars". Monthly Notices of the Royal Astronomical Society. 471 (1): 770–791. arXiv:1706.02208. Bibcode:2017MNRAS.471..770M. doi:10.1093/mnras/stx1433. ISSN 0035-8711.
- ^ a b De Medeiros, J. R.; Alves, S.; Udry, S.; Andersen, J.; Nordström, B.; Mayor, M. (January 2014). "A catalog of rotational and radial velocities for evolved stars V: Southern stars *". Astronomy & Astrophysics. 561: A126. arXiv:1312.3474. Bibcode:2014A&A...561A.126D. doi:10.1051/0004-6361/201220762. eISSN 1432-0746. ISSN 0004-6361. S2CID 54046583.
- ^ "iot Tel". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved 2017-06-05.
{{cite web}}
: CS1 maint: postscript (link) - ^ Eggleton, P. P.; Tokovinin, A. A. (11 September 2008). "A catalogue of multiplicity among bright stellar systems". Monthly Notices of the Royal Astronomical Society. 389 (2): 869–879. arXiv:0806.2878. Bibcode:2008MNRAS.389..869E. doi:10.1111/j.1365-2966.2008.13596.x. eISSN 1365-2966. ISSN 0035-8711. S2CID 14878976.
- ^ Gontcharov, George A.; Mosenkov, Aleksandr V. (28 September 2017). "Verifying reddening and extinction for Gaia DR1 TGAS main sequence stars". Monthly Notices of the Royal Astronomical Society. 472 (4): 3805–3820. arXiv:1709.01160. Bibcode:2017MNRAS.472.3805G. doi:10.1093/mnras/stx2219. eISSN 1365-2966. ISSN 0035-8711. S2CID 118879856.