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| {{short description|Star in the constellation Scorpius}} | |||
| {{pp|small=yes}} | |||
| {{Starbox begin | {{Starbox begin | ||
| | name = G Scorpii | | name = G Scorpii | ||
| }} | |||
| {{Starbox image|image= | |||
| {{Location mark | |||
| |image=Scorpius constellation map.svg|alt=|float=center|width=280 | |||
| |label=|position=right | |||
| |mark=Red circle.svg|mark_width=10|mark_link=G Scorpii | |||
| |x=156|y=720 | |||
| }} | |||
| |caption=Location of G Scorpii (circled) | |||
| }} | }} | ||
| {{Starbox observe | {{Starbox observe | ||
| Line 6: | Line 17: | ||
| | constell = ] | | constell = ] | ||
| | ra = {{RA|17|49|51.48081}}<ref name=aaa474_2_653/> | | ra = {{RA|17|49|51.48081}}<ref name=aaa474_2_653/> | ||
| | dec = {{DEC| |
| dec = {{DEC|-37|02|35.8975}}<ref name=aaa474_2_653/> | ||
| | appmag_v = 3.21<ref name=clpl4_99/> | | appmag_v = 3.21<ref name=clpl4_99/> | ||
| }} | }} | ||
| {{Starbox character | {{Starbox character | ||
| | type = ]<ref name="kallinger2019" /> | |||
| | class = K2 III<ref name=aj132_1_161/> | | class = K2 III<ref name=aj132_1_161/> | ||
| | b-v = +1.17<ref name=clpl4_99/> | | b-v = +1.17<ref name=clpl4_99/> | ||
| Line 22: | Line 34: | ||
| | p_error = 0.15 | | p_error = 0.15 | ||
| | parallax_footnote = <ref name=aaa474_2_653/> | | parallax_footnote = <ref name=aaa474_2_653/> | ||
| | absmag_v = | | absmag_v = +0.24<ref name=Cardini2005/> | ||
| }} | }} | ||
| {{Starbox detail | {{Starbox detail | ||
| | |
| source = <ref name=kallinger2019/> | ||
| | |
| mass = {{val|1.2|0.2}} | ||
| | radius = {{val|20|1}} | |||
| | luminosity = 95 ± 6<ref name=apjl674_1_L53/> | |||
| | |
| luminosity = {{val|93|4}} | ||
| ⚫ | | gravity = 2.2 | ||
| | temperature = 4,538<ref name=apjl674_1_L53/> | |||
| | temperature = {{val|4,535|125|fmt=commas}} | |||
| ⚫ | | |
||
| | metal_fe = {{val|-0.20}}<ref name=charbonnel2020/> | |||
| | rotational_velocity = | | rotational_velocity = <1.0<ref name=demedeiros2014/> | ||
| | age_gyr = | | age_gyr = | ||
| }} | }} | ||
| {{Starbox catalog | {{Starbox catalog | ||
| | names = G Sco, |
| names = {{odlist | name=Fuyue | B=G Sco, γ Tel | CD–37°11907 | FK5=669 | HD=161892 | HIP=87261 | HR=6630 | SAO=209318 }} | ||
| }} |
}} | ||
| {{Starbox reference | |||
| |Simbad=G+Sco | |||
| }} | |||
| {{Starbox end}} | {{Starbox end}} | ||
| '''G Scorpii''' (abbreviated '''G Sco'''), also named '''Fuyue''',<!--Please do not add the alternative name "Ryan Magee" without citing a reliable source that is independent from SuperMegaCast and verifies the content - https://en.wikipedia.org/Help:Referencing_for_beginners --> is a ] in the ] of ]. It has an ] of +3.19. It is approximately 126 ]s from the ]. | |||
| '''G Scorpii''' (G Sco) is a ] in the ] ]. It is an orange ] ] with an ] of +3.19. It is approximately 126 ] from ].<ref name=aaa474_2_653/> The measured ] of the primary star is {{nowrap|3.94 ± 0.21 ]}}.<ref name=aaa431_773/> At the estimated distance of this system, this yields a physical size of about 16 times the ].<ref name=lang2006/> | |||
| == Nomenclature == | |||
| Just 8.5 ]s to the east is the ] ]. | |||
| ]]] | |||
| ''G Scorpii'' is the star's ]. It was formerly situated in the constellation of ] where it was designated ''γ Telescopii'', ] to ''Gamma Telescopii''.<ref name="ridpath" /> It was resited in Scorpius and redesignated G Scorpii by ]. On 30 June 2017 it was included in the List of IAU-approved Star Names.<ref name="IAU-LSN" /> | |||
| G Scorpii bore the ] ''Fuyue'' ({{zh|s=傅说|t=傅說}}) in ancient ]. ] was a former slave that became a high-ranking minister to ] ruler ]. | |||
| It was formerly known as "Gamma ]" (γ Tel) and "''Fuyue''" （傅說） in ancient ]. | |||
| == |
== Properties == | ||
| * ] | |||
| G Scorpii is an orange ] ]. The measured ] is {{val|3.94|0.21|ul=mas}}.<ref name=aaa431_773/> At the estimated distance of this system, this yields a physical size of about 16 times the ].<ref name=lang2006/> Calculations based on its physical properties give a diameter of about {{solar radius|20}}. With an ] of {{val|4,535|fmt=commas|ul=K}}, it has a ] of {{solar luminosity|93|link=y}}.<ref name=kallinger2019/> | |||
| ⚫ | ==References== | ||
| Evolutionary models show that G Scorpii has probably left the ] and is now fusing helium in its core. This makes it a ] star, at the cool end of the ].<ref name=kallinger2019/> | |||
| Just 5 ] to the east is the ] ].<ref name=omeara2013/> At magnitude 3.2, G Scorpii is around 40 times brighter than the entire globular cluster. | |||
| <!-- | |||
| Please do not add an "In popular culture" section about the alternative name "Ryan Magee" without citing a reliable source that is independent from SuperMegaCast and verifies the content - https://en.wikipedia.org/Wikipedia:%22In_popular_culture%22_content | |||
| --> | |||
| ⚫ | == References == | ||
| {{reflist|refs= | {{reflist|refs= | ||
| <ref name="IAU-LSN">{{citation | url=https://www.iau.org/public/themes/naming_stars/ | title=Naming Stars |publisher=IAU.org |access-date=16 December 2017 |postscript=.}}</ref> | |||
| <ref name=aaa474_2_653>{{citation | first=F. | last=van Leeuwen |date=November 2007 | title=Validation of the new Hipparcos reduction | journal=Astronomy and Astrophysics | volume=474 | issue=2 | pages=653–664 | bibcode=2007A&A...474..653V | doi=10.1051/0004-6361:20078357 | postscript=. |arxiv = 0708.1752 }}</ref> | |||
| <!--<ref name="WGSN">{{citation | url=https://www.iau.org/science/scientific_bodies/working_groups/280/ | title=IAU Working Group on Star Names (WGSN)|access-date=22 May 2016 |postscript=.}}</ref> | |||
| ⚫ | <ref name= |
||
| <ref name=wagman>{{citation | last = Wagman | first = Morton | year = 2003 | title = Lost Stars: Lost, Missing and Troublesome Stars from the Catalogues of Johannes Bayer, Nicholas Louis de Lacaille, John Flamsteed, and Sundry Others | publisher = The McDonald & Woodward Publishing Company | location = Blacksburg, Virginia | bibcode = 2003lslm.book.....W | isbn = 978-0-939923-78-6 | postscript=.}}</ref> --> | |||
| <ref name=aj132_1_161>{{citation | display-authors=1 | last1=Gray | first1=R. O. | last2=Corbally | first2=C. J. | last3=Garrison | first3=R. F. | last4=McFadden | first4=M. T. | last5=Bubar | first5=E. J. | last6=McGahee | first6=C. E. | last7=O'Donoghue | first7=A. A. | last8=Knox | first8=E. R. | title=Contributions to the Nearby Stars (NStars) Project: Spectroscopy of Stars Earlier than M0 within 40 pc-The Southern Sample | journal=The Astronomical Journal | volume=132 | issue=1 | pages=161–170 |date=July 2006 | doi=10.1086/504637 | bibcode=2006AJ....132..161G | arxiv=astro-ph/0603770 | postscript=. }}</ref> | |||
| <ref name= |
<ref name=aaa474_2_653>{{citation | first=F. | last=van Leeuwen |date=November 2007 | title=Validation of the new Hipparcos reduction | journal=Astronomy and Astrophysics | volume=474 | issue=2 | pages=653–664 | bibcode=2007A&A...474..653V | doi=10.1051/0004-6361:20078357 | postscript=. |arxiv = 0708.1752| s2cid=18759600 }}</ref> | ||
| <ref name= |
<ref name=Cardini2005>{{citation | title=Mg II chromospheric radiative loss rates in cool active and quiet stars | last1=Cardini | first1=D. | postscript=. | journal=Astronomy and Astrophysics | volume=430 | pages=303–311 | date=January 2005 | doi=10.1051/0004-6361:20041440 | bibcode=2005A&A...430..303C |arxiv = astro-ph/0409683| s2cid=12136256 }}</ref> | ||
| <ref name= |
<ref name=aj132_1_161>{{citation | display-authors=1 | last1=Gray | first1=R. O. | last2=Corbally | first2=C. J. | last3=Garrison | first3=R. F. | last4=McFadden | first4=M. T. | last5=Bubar | first5=E. J. | last6=McGahee | first6=C. E. | last7=O'Donoghue | first7=A. A. | last8=Knox | first8=E. R. | title=Contributions to the Nearby Stars (NStars) Project: Spectroscopy of Stars Earlier than M0 within 40 pc-The Southern Sample | journal=The Astronomical Journal | volume=132 | issue=1 | pages=161–170 |date=July 2006 | doi=10.1086/504637 | bibcode=2006AJ....132..161G | arxiv=astro-ph/0603770 | s2cid=119476992 | postscript=.}}</ref> | ||
| <ref name=gcsrv>{{cite journal | last=Wilson | first=Ralph Elmer | date=1953 | title=General Catalogue of Stellar Radial Velocities | journal=Carnegie Institute Washington D.C. Publication | publisher=] | location=Washington | bibcode=1953GCRV..C......0W}}</ref> | |||
| ⚫ | <ref name=lang2006>{{citation | first1=Kenneth R. | last1=Lang | title=Astrophysical formulae | volume=1 | series=Astronomy and astrophysics library | edition=3rd | publisher=Birkhäuser | date=2006 | isbn=3540296921 | url= |
||
| ⚫ | <ref name=clpl4_99>{{citation | display-authors=1 | last1=Johnson | first1=H. L. | last2=Iriarte | first2=B. | last3=Mitchell | first3=R. I. | last4=Wisniewskj | first4=W. Z. | title=UBVRIJKL photometry of the bright stars | journal=Communications of the Lunar and Planetary Laboratory | volume=4 | issue=99 | pages=99 | date=1966 | bibcode=1966CoLPL...4...99J | postscript=.}}</ref> | ||
| <ref name=aaa431_773>{{citation | last1=Richichi | first1=A. | last2=Percheron | first2=I. | last3=Khristoforova | first3=M. | title=CHARM2: An updated Catalog of High Angular Resolution Measurements | journal=Astronomy and Astrophysics | volume=431 | issue=2 | pages=773–777 |date=February 2005 | doi=10.1051/0004-6361:20042039 | bibcode=2005A&A...431..773R | doi-access=free}}</ref> | |||
| ⚫ | <ref name=lang2006>{{citation | first1=Kenneth R. | last1=Lang | title=Astrophysical formulae | volume=1 | series=Astronomy and astrophysics library | edition=3rd | publisher=] | date=2006 | isbn=3540296921 | url=https://books.google.com/books?id=OvTjLcQ4MCQC&pg=PA41 | postscript=.}} The radius (R<sub>*</sub>) is given by: | ||
| :<math>\begin{align} 2\cdot R_* | :<math>\begin{align} 2\cdot R_* | ||
| & = \frac{(38.6\cdot 3.94\cdot 10^{-3})\ \text{AU}}{0.0046491\ \text{AU}/R_{\bigodot}} \\ | & = \frac{(38.6\cdot 3.94\cdot 10^{-3})\ \text{AU}}{0.0046491\ \text{AU}/R_{\bigodot}} \\ | ||
| & \approx 32.7\cdot R_{\bigodot} | & \approx 32.7\cdot R_{\bigodot} | ||
| \end{align}</math></ref> | \end{align}</math></ref> | ||
| <ref name=kallinger2019>{{citation |bibcode=2019A&A...624A..35K |title=Stellar masses from granulation and oscillations of 23 bright red giants observed by BRITE-Constellation |last1=Kallinger |first1=T. |last2=Beck |first2=P. G. |last3=Hekker |first3=S. |last4=Huber |first4=D. |last5=Kuschnig |first5=R. |last6=Rockenbauer |first6=M. |last7=Winter |first7=P. M. |last8=Weiss |first8=W. W. |last9=Handler |first9=G. |last10=Moffat |first10=A. F. J. |last11=Pigulski |first11=A. |last12=Popowicz |first12=A. |last13=Wade |first13=G. A. |last14=Zwintz |first14=K. |journal=Astronomy and Astrophysics |year=2019 |volume=624 |pages=A35 |doi=10.1051/0004-6361/201834514 |arxiv=1902.07531 |s2cid=102486794 |postscript=.}}</ref> | |||
| <ref name=charbonnel2020>{{citation |bibcode=2020A&A...633A..34C |title=Lithium in red giant stars: Constraining non-standard mixing with large surveys in the Gaia era |last1=Charbonnel |first1=C. |last2=Lagarde |first2=N. |last3=Jasniewicz |first3=G. |last4=North |first4=P. L. |last5=Shetrone |first5=M. |last6=Krugler Hollek |first6=J. |last7=Smith |first7=V. V. |last8=Smiljanic |first8=R. |last9=Palacios |first9=A. |last10=Ottoni |first10=G. |journal=Astronomy and Astrophysics |year=2020 |volume=633 |pages=A34 |doi=10.1051/0004-6361/201936360 |arxiv=1910.12732 |s2cid=204907220 |postscript=.}}</ref> | |||
| <ref name=demedeiros2014>{{citation |bibcode=2014A&A...561A.126D |title=A catalog of rotational and radial velocities for evolved stars. V. Southern stars |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. |journal=Astronomy and Astrophysics |year=2014 |volume=561 |pages=A126 |doi=10.1051/0004-6361/201220762 |arxiv=1312.3474 |s2cid=54046583 |postscript=.}}</ref> | |||
| <ref name=omeara2013>{{citation | postscript=. | first1=Stephen James | last1=O'Meara | title=Deep-Sky Companions: Southern Gems | publisher=] | year=2013 | isbn=978-1139851541 | pages=360–363 | url=https://books.google.com/books?id=BoIsCgAAQBAJ&pg=PA360 | bibcode=2013dcsg.book.....O}}</ref> | |||
| <ref name=ridpath>{{citation |url=http://www.ianridpath.com/startales/telescopium.htm |title=Telescopium |website=Star Tales |author=Ian Ridpath |author-link=Ian Ridpath |access-date=2020-05-23 |postscript=.}}</ref> | |||
| }} | }} | ||
| Line 73: | Line 115: | ||
| ] | ] | ||
| ] | |||
| ] | |||
| ] | ] | ||
| ] | ] | ||
| ] | ] | ||
| ] | |||
| {{Giant-star-stub}} | |||
Latest revision as of 21:04, 12 January 2025
Star in the constellation Scorpius
Location of G Scorpii (circled) | |
| Observation data Epoch J2000 Equinox J2000 | |
|---|---|
| Constellation | Scorpius |
| Right ascension | 17 49 51.48081 |
| Declination | −37° 02′ 35.8975″ |
| Apparent magnitude (V) | 3.21 |
| Characteristics | |
| Evolutionary stage | horizontal branch |
| Spectral type | K2 III |
| U−B color index | +1.19 |
| B−V color index | +1.17 |
| Astrometry | |
| Radial velocity (Rv) | +24.7 km/s |
| Proper motion (μ) | RA: 40.59 mas/yr Dec.: 27.24 mas/yr |
| Parallax (π) | 25.92 ± 0.15 mas |
| Distance | 125.8 ± 0.7 ly (38.6 ± 0.2 pc) |
| Absolute magnitude (MV) | +0.24 |
| Details | |
| Mass | 1.2±0.2 M☉ |
| Radius | 20±1 R☉ |
| Luminosity | 93±4 L☉ |
| Surface gravity (log g) | 2.2 cgs |
| Temperature | 4,535±125 K |
| Metallicity | −0.20 dex |
| Rotational velocity (v sin i) | <1.0 km/s |
| Other designations | |
| Fuyue, G Sco, γ Tel, FK5 669, HD 161892, HIP 87261, HR 6630, SAO 209318 | |
| Database references | |
| SIMBAD | data |
G Scorpii (abbreviated G Sco), also named Fuyue, is a giant star in the constellation of Scorpius. It has an apparent magnitude of +3.19. It is approximately 126 light-years from the Sun.
Nomenclature
G Scorpii is the star's Bayer designation. It was formerly situated in the constellation of Telescopium where it was designated γ Telescopii, Latinised to Gamma Telescopii. It was resited in Scorpius and redesignated G Scorpii by Benjamin Apthorp Gould. On 30 June 2017 it was included in the List of IAU-approved Star Names.
G Scorpii bore the traditional name Fuyue (simplified Chinese: 傅说; traditional Chinese: 傅說) in ancient China. Fu Yue was a former slave that became a high-ranking minister to Shang dynasty ruler Wu Ding.
Properties
G Scorpii is an orange K-type giant. The measured angular diameter is 3.94±0.21 mas. At the estimated distance of this system, this yields a physical size of about 16 times the radius of the Sun. Calculations based on its physical properties give a diameter of about 20 R☉. With an effective surface temperature of 4,535 K, it has a bolometric luminosity of 93 L☉.
Evolutionary models show that G Scorpii has probably left the red giant branch and is now fusing helium in its core. This makes it a red clump star, at the cool end of the horizontal branch.
Just 5 arcminutes to the east is the globular cluster NGC 6441. At magnitude 3.2, G Scorpii is around 40 times brighter than the entire globular cluster.
References
- ^ van Leeuwen, F. (November 2007), "Validation of the new Hipparcos reduction", Astronomy and Astrophysics, 474 (2): 653–664, arXiv:0708.1752, Bibcode:2007A&A...474..653V, doi:10.1051/0004-6361:20078357, S2CID 18759600.
- ^ Johnson, H. L.; et al. (1966), "UBVRIJKL photometry of the bright stars", Communications of the Lunar and Planetary Laboratory, 4 (99): 99, Bibcode:1966CoLPL...4...99J.
- ^ Kallinger, T.; Beck, P. G.; Hekker, S.; Huber, D.; Kuschnig, R.; Rockenbauer, M.; Winter, P. M.; Weiss, W. W.; Handler, G.; Moffat, A. F. J.; Pigulski, A.; Popowicz, A.; Wade, G. A.; Zwintz, K. (2019), "Stellar masses from granulation and oscillations of 23 bright red giants observed by BRITE-Constellation", Astronomy and Astrophysics, 624: A35, arXiv:1902.07531, Bibcode:2019A&A...624A..35K, doi:10.1051/0004-6361/201834514, S2CID 102486794.
- Gray, R. O.; et al. (July 2006), "Contributions to the Nearby Stars (NStars) Project: Spectroscopy of Stars Earlier than M0 within 40 pc-The Southern Sample", The Astronomical Journal, 132 (1): 161–170, arXiv:astro-ph/0603770, Bibcode:2006AJ....132..161G, doi:10.1086/504637, S2CID 119476992.
- Wilson, Ralph Elmer (1953). "General Catalogue of Stellar Radial Velocities". Carnegie Institute Washington D.C. Publication. Washington: Carnegie Institution of Washington. Bibcode:1953GCRV..C......0W.
- Cardini, D. (January 2005), "Mg II chromospheric radiative loss rates in cool active and quiet stars", Astronomy and Astrophysics, 430: 303–311, arXiv:astro-ph/0409683, Bibcode:2005A&A...430..303C, doi:10.1051/0004-6361:20041440, S2CID 12136256.
- Charbonnel, C.; Lagarde, N.; Jasniewicz, G.; North, P. L.; Shetrone, M.; Krugler Hollek, J.; Smith, V. V.; Smiljanic, R.; Palacios, A.; Ottoni, G. (2020), "Lithium in red giant stars: Constraining non-standard mixing with large surveys in the Gaia era", Astronomy and Astrophysics, 633: A34, arXiv:1910.12732, Bibcode:2020A&A...633A..34C, doi:10.1051/0004-6361/201936360, S2CID 204907220.
- De Medeiros, J. R.; Alves, S.; Udry, S.; Andersen, J.; Nordström, B.; Mayor, M. (2014), "A catalog of rotational and radial velocities for evolved stars. V. Southern stars", Astronomy and Astrophysics, 561: A126, arXiv:1312.3474, Bibcode:2014A&A...561A.126D, doi:10.1051/0004-6361/201220762, S2CID 54046583.
- Ian Ridpath, "Telescopium", Star Tales, retrieved 2020-05-23.
- Naming Stars, IAU.org, retrieved 16 December 2017.
- Richichi, A.; Percheron, I.; Khristoforova, M. (February 2005), "CHARM2: An updated Catalog of High Angular Resolution Measurements", Astronomy and Astrophysics, 431 (2): 773–777, Bibcode:2005A&A...431..773R, doi:10.1051/0004-6361:20042039
- Lang, Kenneth R. (2006), Astrophysical formulae, Astronomy and astrophysics library, vol. 1 (3rd ed.), Birkhäuser, ISBN 3540296921. The radius (R*) is given by:
- O'Meara, Stephen James (2013), Deep-Sky Companions: Southern Gems, Cambridge University Press, pp. 360–363, Bibcode:2013dcsg.book.....O, ISBN 978-1139851541.
