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{{Short description|Star in the constellation Apus}}
{{Short description|Star in the constellation Apus}}
{{Starbox begin
{{Starbox begin
| name = NO Apodis
| name = [[Variable star designation|NO Apodis]]
}}
}}
{{Starbox observe
{{Starbox observe
| epoch = J2000
| epoch = J2000
| ra = {{RA|17|31|27.465}}<ref name="van Leeuwen2007"/>
| ra = {{RA|17|31|27.4667}}<ref name = EDR3/>
| dec = {{DEC|-80|51|32.88}}<ref name="van Leeuwen2007"/>
| dec = {{DEC|-80|51|32.8761}}<ref name = EDR3/>
| appmag_v = 5.71-5.95<ref name=AAVSONO/>
| appmag_v = 5.71-5.95<ref name=AAVSONO/>
| constell = [[Apus]]
| constell = [[Apus]]
}}
}}
{{Starbox character
{{Starbox character
| class = M3III<ref name=AAVSONO/>
| type = [[Asymptotic giant branch|AGB]]<ref name = Eggen1992/>
| class = M3 III<ref name = Houk1975/>
| b-v = 1.67
| u-b = 1.81
| b-v = +1.67<ref name = Johnson1966/>
| u-b = +1.80<ref name = Johnson1966/>
| variable = [[Semiregular variable|Semiregular]] [[Variable star#Pulsating variable stars|pulsating Star]]
| variable = [[Semiregular variable|Semiregular]]<ref name = Samus2017/>
}}
}}
{{Starbox astrometry
{{Starbox astrometry
| radial_v = -18.3
| radial_v = −18.3{{±|0.6}}<ref name = Gontcharov2006/>
| prop_mo_ra = -3.926 ± 0.197<ref name=dr2/>
| prop_mo_ra = −3.662
| prop_mo_dec = -43.585 ± 0.214<ref name=dr2/>
| prop_mo_dec = −43.943
| parallax = 4.2033
| parallax = 4.1479
| p_error = 0.1296
| p_error = 0.0741
| parallax_footnote = <ref name=dr2>{{cite DR2}}</ref>
| parallax_footnote = <ref name = EDR3/>
| pm_footnote = <ref name = EDR3/>
| absmag_v =
| absmag_v = −1.32<ref name = Anderson2012/>
}}
}}
<!--
{{Starbox detail
{{Starbox detail
| mass =
| mass = 1.63<ref name = Kervella2021/>
| radius =
| radius = 107<ref name = Stassun2019/>
| luminosity =
| luminosity = 1,408<ref name = GaiaDR2/>
| temperature =
| temperature = 3,521{{±|122}}<ref name = Stassun2019/>
| gravity = 1.7{{±|0.1}}<ref name = GaiaDR3/>
| metal_fe =
| metal_fe =
| rotational_velocity =
| age_gyr =
| age_gyr =
}}
}}
-->
{{Starbox catalog
{{Starbox catalog
| names = {{odlist|CD = −80°638|HD = 156513|FK5 = 1455|HIP = 85760|HR = 6429|SAO = 258769|CPD = −80°828|GC = 23550|Gould = 59 G. Apodis<ref name = GouldNEW/>|NSV = 8609|V = NO Aps}}<ref name = SIMBAD/>
| names = [[Durchmusterung|CD]]-80° 638, [[Henry Draper Catalogue|HD]] 156513, [[FK5]] 1455, [[Hipparcos#Published catalogues|HIP]] 85760, [[Bright Star Catalogue|HR]] 6429, [[Smithsonian Astrophysical Observatory Star Catalog|SAO]] 258769.
}}
}}
{{Starbox reference
{{Starbox reference
Line 44: Line 44:
{{Starbox end}}
{{Starbox end}}


'''NO Apodis''' ('''HD 156513''') is [[Semiregular variable star|semi-regular]] pulsating star located in the far southern constellation [[Apus]]. It varies between magnitudes 5.71 and 5.95,<ref name=AAVSONO>{{cite web|url=http://www.aavso.org/vsx/index.php?view=detail.top&oid=815 |title=NO Apodis |author =Watson, Christopher |date=25 August 2009 |work=The International Variable Star Index|publisher=[[American Association of Variable Star Observers]]|accessdate=31 March 2015}}</ref> its pulsations of periods 26.2 and 26.6 days respectively.<ref name=tabur/> Located around 780 ± 20 light-years distant,<ref name=dr2/> it shines with a [[luminosity]] approximately 2059 times that of the Sun and has a surface temperature of 3568 K.<ref name=Mcdonald/>
'''NO Apodis''' is a solitary,<ref name = Eggleton2008/> red hued [[variable star]] located in the southern [[circumpolar constellation]] [[Apus]]. It has an average [[apparent magnitude]] of 5.86,<ref name = Tycho2000/> allowing it to be faintly seen with the [[naked eye]]. The object is relatively far at a distance of 790 [[light year]]s<ref name = EDR3/> but is drifting closer with a heliocentric [[radial velocity]] {{val|-18.3|ul=km/s}}.<ref name = Gontcharov2006/>

NO Apodis has a [[stellar classification]] of M3 III,<ref name = Houk1975/> indicating that it is a [[red giant]]. It is currently on the [[asymptotic giant branch]],<ref name = Eggen1992/> fusing [[hydrogen]] and [[helium]] shells around an inert [[carbon]] [[stellar core|core]]. At present it has 1.63 times the [[mass of the Sun]]<ref name = Kervella2021/> and an enlarged [[radius]] of {{val|107|ul=solar radius}}.<ref name = Stassun2019/> It shines with a [[bolometric luminosity]] 1,408 times that of the [[Sun]]<ref name = GaiaDR2/> from its [[photosphere]] at an [[effective temperature]] of {{val|3521|ul=K|fmt=commas}}.<ref name = Stassun2019/>

NO Apodis is classified as a [[semiregular variable]] of unknown subtype. Observations from Tabur et. al. (2009) reveal it to have two periods, both lasting 26-7 [[days]].<ref name = Tabur2009/> During this timeframe, the star flucates between 5.71 and 5.95 in the [[visual]] band.<ref name=AAVSONO/>

{| class="wikitable"
|+Periods of NO Apodis<ref name = Tabur2009/>
!Period
!Days
!Amplitude
|-
|1
|26.2
|0.04
|-
|2
|26.6
|0.092
⚫
|}


==References==
==References==
{{reflist|refs=
{{reflist|refs=


<ref name = EDR3>{{Cite Gaia EDR3|5774447400486874112}}</ref>
<ref name=Mcdonald>{{cite journal|author=McDonald, I.|author2=Zijlstra, A. A.|author3=Boyer, M. L.|date=2012|title=Fundamental Parameters and Infrared Excesses of Hipparcos Stars|journal=Monthly Notices of the Royal Astronomical Society|volume=427|issue=1|pages=343–57|bibcode=2012MNRAS.427..343M|arxiv = 1208.2037 |doi = 10.1111/j.1365-2966.2012.21873.x |s2cid=118665352}}</ref>


<ref name=tabur>{{cite journal | title=Long-term photometry and periods for 261 nearby pulsating M giants |author1=Tabur, V. |author2=Bedding, T.R. |author2-link= Tim Bedding|author3=Kiss, L.L. |author4=Moon, T.T. |author5=Szeidl, B. |author6=Kjeldsen, H. |date=2009 |journal=Monthly Notices of the Royal Astronomical Society |volume= 400 | issue =4 |pages= 1945–61 |doi=10.1111/j.1365-2966.2009.15588.x |arxiv = 0908.3228 |bibcode = 2009MNRAS.400.1945T |s2cid=15358380 }}</ref>
<ref name = Tabur2009>{{cite journal | last1 = Tabur | first1 = V. | last2 = Bedding | first2 = T. R. | last3 = Kiss | first3 = L. L. | last4 = Moon | first4 = T. T. | last5 = Szeidl | first5 = B. | last6 = Kjeldsen | first6 = H. | title = Long-term photometry and periods for 261 nearby pulsating M giants | journal = Monthly Notices of the Royal Astronomical Society | date = 21 December 2009 | volume = 400 | issue = 4 | pages = 1945–1961 | issn = 0035-8711 | eissn = 1365-2966 | doi = 10.1111/j.1365-2966.2009.15588.x | bibcode = 2009MNRAS.400.1945T | arxiv = 0908.3228 | doi-access = free}}</ref>


<ref name = Houk1975>{{cite book|last1=Houk |first1=N. |last2=Cowley |first2=A. P. |title=University of Michigan Catalogue of two-dimensional spectral types for the HD stars. Volume I. Declinations −90° to −53° |year=1975 |bibcode=1975mcts.book.....H }}</ref>
<ref name="van Leeuwen2007">{{cite journal | title=Validation of the new Hipparcos reduction | url=http://www.aanda.org/articles/aa/full/2007/41/aa8357-07/aa8357-07.html | last1=van Leeuwen | first1=F. | journal=Astronomy and Astrophysics | volume=474 | issue=2 | pages=653–64 | year=2007 | arxiv=0708.1752 | bibcode=2007A&A...474..653V | doi=10.1051/0004-6361:20078357 | s2cid=18759600 }}[http://webviz.u-strasbg.fr/viz-bin/VizieR-5?-out.add=.&-source=I/311/hip2&recno=85480 Vizier catalog entry ]</ref>


<ref name = Johnson1966>{{cite journal |last1=Johnson |first1=H. L. |last2=Mitchell |first2=R. I. |last3=Iriarte |first3=B. |last4=Wisniewski |first4=W. Z. |title=UBVRIJKL Photometry of the Bright Stars |journal=Communications of the Lunar and Planetary Laboratory |date=1966 |volume=4 |pages=99–110 |bibcode=1966CoLPL...4...99J}}</ref>
⚫
}}


<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}}</ref>

<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>

<ref name = Stassun2019>{{cite journal |display-authors=1 |last1=Stassun |first1=Keivan G. |last2=Oelkers |first2=Ryan J. |last3=Paegert |first3=Martin |last4=Torres |first4=Guillermo |last5=Pepper |first5=Joshua |last6=Lee |first6=Nathan De |last7=Collins |first7=Kevin |last8=Latham |first8=David W. |last9=Muirhead |first9=Philip S. |last10=Chittidi |first10=Jay |last11=Rojas-Ayala |first11=Bárbara |last12=Fleming |first12=Scott W. |last13=Rose |first13=Mark E. |last14=Tenenbaum |first14=Peter |last15=Ting |first15=Eric B. |last16=Kane |first16=Stephen R. |last17=Barclay |first17=Thomas |last18=Bean |first18=Jacob L. |last19=Brassuer |first19=C. E. |last20=Charbonneau |first20=David |last21=Ge |first21=Jian |last22=Lissauer |first22=Jack J. |last23=Mann |first23=Andrew W. |last24=McLean |first24=Brian |last25=Mullally |first25=Susan |last26=Narita |first26=Norio |last27=Plavchan |first27=Peter |last28=Ricker |first28=George R. |last29=Sasselov |first29=Dimitar |last30=Seager |first30=S. |last31=Sharma |first31=Sanjib |last32=Shiao |first32=Bernie |last33=Sozzetti |first33=Alessandro |last34=Stello |first34=Dennis |last35=Vanderspek |first35=Roland |last36=Wallace |first36=Geoff |last37=Winn |first37=Joshua N. |title=The Revised TESS Input Catalog and Candidate Target List |journal=The Astronomical Journal |date=9 September 2019 |volume=158 |issue=4 |pages=138 |doi=10.3847/1538-3881/ab3467 |issn=0004-6256 |bibcode=2019AJ....158..138S |arxiv=1905.10694 |doi-access=free}}</ref>

<ref name = GaiaDR2>{{Cite DR2|5774447400486874112}}</ref>

<ref name = GaiaDR3>{{Cite Gaia DR3|5774447400486874112}}</ref>

<ref name = Kervella2021>{{cite journal | last1 = Kervella | first1 = Pierre | last2 = Arenou | first2 = Frédéric | last3 = Thévenin | first3 = Frédéric | title = Stellar and substellar companions from ''Gaia'' EDR3 | journal = Astronomy & Astrophysics | year = 2022 | volume = 657 | page = A7 | issn = 0004-6361 | eissn = 1432-0746 | doi = 10.1051/0004-6361/202142146 | bibcode = 2022A&A...657A...7K | arxiv = 2109.10912 | doi-access = free}}</ref>

<ref name=AAVSONO>{{cite web|url=http://www.aavso.org/vsx/index.php?view=detail.top&oid=815 |title=NO Apodis |author =Watson, Christopher |date=25 August 2009 |work=The International Variable Star Index|publisher=[[American Association of Variable Star Observers]]|accessdate=31 March 2015}}</ref>

<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 | doi-access = free }}</ref>

<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>

<ref name = Samus2017>{{cite journal |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. |title=General catalogue of variable stars: Version GCVS 5.1 |journal=Astronomy Reports |date=January 2017 |volume=61 |issue=1 |pages=80–88 |doi=10.1134/S1063772917010085 |issn=1063-7729 |bibcode=2017ARep...61...80S|s2cid=125853869 }}</ref>

<ref name = SIMBAD>{{Cite simbad|title = NO Aps|access-date = July 27, 2022}}</ref>

<ref name = GouldNEW>{{citation|last=Gould |first=B. A. |title=Uranometria Argentina |publisher=Reprinted and updated by Pilcher, F |url=http://www.uranometriaargentina.com/ |access-date=2012-01-06 |url-status=dead |archive-url=https://web.archive.org/web/20120227032716/http://www.uranometriaargentina.com/ |archive-date=2012-02-27 }}</ref>

<ref name = Eggen1992>{{cite journal |last1=Eggen |first1=Olin J. |title=Asymptotic giant branch stars near the sun |journal=The Astronomical Journal |date=July 1992 |volume=104 |pages=275 |doi=10.1086/116239 |issn=0004-6256 |bibcode=1992AJ....104..275E |doi-access=free}}</ref>

}}
{{Stars of Apus}}
{{Stars of Apus}}


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[[Category:Bright Star Catalogue objects|6429]]
[[Category:Bright Star Catalogue objects|6429]]
[[Category:Durchmusterung objects]]
[[Category:Durchmusterung objects]]


{{var-star-stub}}

Revision as of 02:48, 28 July 2022

NO Apodis
Observation data
Epoch J2000      Equinox J2000
Constellation Apus
Right ascension 17h 31m 27.4667s[1]
Declination −80° 51′ 32.8761″[1]
Apparent magnitude (V) 5.71-5.95[2]
Characteristics
Evolutionary stage AGB[3]
Spectral type M3 III[4]
U−B color index +1.80[5]
B−V color index +1.67[5]
Variable type Semiregular[6]
Astrometry
Radial velocity (Rv)−18.3±0.6[7] km/s
Proper motion (μ) RA: −3.662 mas/yr[1]
Dec.: −43.943 mas/yr[1]
Parallax (π)4.1479 ± 0.0741 mas[1]
Distance790 ± 10 ly
(241 ± 4 pc)
Absolute magnitude (MV)−1.32[8]
Details
Mass1.63[9] M☉
Radius107[10] R☉
Luminosity1,408[11] L☉
Surface gravity (log g)1.7±0.1[12] cgs
Temperature3,521±122[10] K
Other designations
59 G. Apodis[13], NO Aps, NSV 8609, CD−80°638, CPD−80°828, FK5 1455, GC 23550, HD 156513, HIP 85760, HR 6429, SAO 258769[14]
Database references
SIMBADdata

NO Apodis is a solitary,[15] red hued variable star located in the southern circumpolar constellation Apus. It has an average apparent magnitude of 5.86,[16] allowing it to be faintly seen with the naked eye. The object is relatively far at a distance of 790 light years[1] but is drifting closer with a heliocentric radial velocity −18.3 km/s.[7]

NO Apodis has a stellar classification of M3 III,[4] indicating that it is a red giant. It is currently on the asymptotic giant branch,[3] fusing hydrogen and helium shells around an inert carbon core. At present it has 1.63 times the mass of the Sun[9] and an enlarged radius of 107 R☉.[10] It shines with a bolometric luminosity 1,408 times that of the Sun[11] from its photosphere at an effective temperature of 3,521 K.[10]

NO Apodis is classified as a semiregular variable of unknown subtype. Observations from Tabur et. al. (2009) reveal it to have two periods, both lasting 26-7 days.[17] During this timeframe, the star flucates between 5.71 and 5.95 in the visual band.[2]

Periods of NO Apodis[17]
Period Days Amplitude
1 26.2 0.04
2 26.6 0.092

References

  1. ^ a b c d e Brown, A. G. A.; et al. (Gaia collaboration) (2021). "Gaia Early Data Release 3: Summary of the contents and survey properties". Astronomy & Astrophysics. 649: A1. arXiv:2012.01533. Bibcode:2021A&A...649A...1G. doi:10.1051/0004-6361/202039657. S2CID 227254300. (Erratum: doi:10.1051/0004-6361/202039657e). Gaia EDR3 record for this source at VizieR.
  2. ^ a b Watson, Christopher (25 August 2009). "NO Apodis". The International Variable Star Index. American Association of Variable Star Observers. Retrieved 31 March 2015.
  3. ^ a b Eggen, Olin J. (July 1992). "Asymptotic giant branch stars near the sun". The Astronomical Journal. 104: 275. Bibcode:1992AJ....104..275E. doi:10.1086/116239. ISSN 0004-6256.
  4. ^ a b Houk, N.; Cowley, A. P. (1975). University of Michigan Catalogue of two-dimensional spectral types for the HD stars. Volume I. Declinations −90° to −53°. Bibcode:1975mcts.book.....H.
  5. ^ a b Johnson, H. L.; Mitchell, R. I.; Iriarte, B.; Wisniewski, W. Z. (1966). "UBVRIJKL Photometry of the Bright Stars". Communications of the Lunar and Planetary Laboratory. 4: 99–110. Bibcode:1966CoLPL...4...99J.
  6. ^ Samus’, N. N.; Kazarovets, E. V.; Durlevich, O. V.; Kireeva, N. N.; Pastukhova, E. N. (January 2017). "General catalogue of variable stars: Version GCVS 5.1". Astronomy Reports. 61 (1): 80–88. Bibcode:2017ARep...61...80S. doi:10.1134/S1063772917010085. ISSN 1063-7729. S2CID 125853869.
  7. ^ 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.
  8. ^ 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.
  9. ^ a b Kervella, Pierre; Arenou, Frédéric; Thévenin, Frédéric (2022). "Stellar and substellar companions from Gaia EDR3". Astronomy & Astrophysics. 657: A7. arXiv:2109.10912. Bibcode:2022A&A...657A...7K. doi:10.1051/0004-6361/202142146. eISSN 1432-0746. ISSN 0004-6361.
  10. ^ a b c d Stassun, Keivan G.; et al. (9 September 2019). "The Revised TESS Input Catalog and Candidate Target List". The Astronomical Journal. 158 (4): 138. arXiv:1905.10694. Bibcode:2019AJ....158..138S. doi:10.3847/1538-3881/ab3467. ISSN 0004-6256.
  11. ^ a b Brown, A. G. A.; et al. (Gaia collaboration) (August 2018). "Gaia Data Release 2: Summary of the contents and survey properties". Astronomy & Astrophysics. 616. A1. arXiv:1804.09365. Bibcode:2018A&A...616A...1G. doi:10.1051/0004-6361/201833051. Gaia DR2 record for this source at VizieR.
  12. ^ 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.
  13. ^ Gould, B. A., Uranometria Argentina, Reprinted and updated by Pilcher, F, archived from the original on 2012-02-27, retrieved 2012-01-06
  14. ^ "NO Aps". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved July 27, 2022.
  15. ^ 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.
  16. ^ 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.
  17. ^ a b Tabur, V.; Bedding, T. R.; Kiss, L. L.; Moon, T. T.; Szeidl, B.; Kjeldsen, H. (21 December 2009). "Long-term photometry and periods for 261 nearby pulsating M giants". Monthly Notices of the Royal Astronomical Society. 400 (4): 1945–1961. arXiv:0908.3228. Bibcode:2009MNRAS.400.1945T. doi:10.1111/j.1365-2966.2009.15588.x. eISSN 1365-2966. ISSN 0035-8711.
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