“Mu Geminorum”的意思、由来-开放百科全书

Mu Geminorum forms the primary or 'A' component of a double star system designated WDS J06230+2231 along with UCAC2 39641417^[2] (also designated WDS J06230+2231BC), itself a binary pair.^[24]

Nomenclature

Mu Geminorum bore the traditional name of Tejat or Tejat Posterior which means 'back foot', because it is the foot of Castor, one of the Gemini twins. The name Tejat Posterior was formerly applied to an asterism consisting of this star, along with Gamma Geminorum (Alhena), Nu Geminorum, Eta Geminorum (Propus), and Xi Geminorum (Alzirr).^[24] In 2016, the International Astronomical Union organized a Working Group on Star Names (WGSN)^[4] to catalogue and standardize proper names for stars. The WGSN decided to attribute proper names to individual stars rather than entire multiple systems.^[5] It approved the name Tejat for the component WDS J06230+2231A (i.e. Mu Geminorum) on February 1, 2017 and it is now so included in the List of IAU-approved Star Names.^[1]

The names Calx (Latin, meaning 'heel'), Pish Pai (from the Persian پیش‌پای ('pīshpāy', meaning 'foreleg'), and Nuhatai (from Arabic 'Al Nuḥātai', the dual form of 'Al Nuḥāt', 'a Camel's Hump') have also been applied to Mu Geminorum.^[30]

In Chinese, {{lang|zh|井宿}} ({{lang|zh-Latn|Jǐng Su}}), meaning Well (asterism), refers to an asterism consisting of Mu Geminorum, Gamma Geminorum, Nu Geminorum, Xi Geminorum, Epsilon Geminorum, 36 Geminorum, Zeta Geminorum and Lambda Geminorum.^[6] Consequently, Mu Geminorum itself is known as {{lang|zh|井宿一}} ({{lang|zh-Latn|Jǐng Su yī}}, {{lang-en|the First Star of Well}}).^[7]

Properties

Mu Geminorum has an average apparent visual magnitude of 2.9,^[3] which makes it the fourth-brightest member of Gemini. Because the star lies near the ecliptic, it is subject to occultations by the Moon.^[34] Seen from Earth, its brightness is reduced by 0.07 magnitudes by extinction from intervening gas and dust.^[8]

It is a slow irregular variable of type LB. Its brightness varies between magnitude +2.75 and +3.02 over a 72-day period, along with a 2,000-day period of long term variation. It is a red giant at a stellar classification of M3 III,^[4] with a surface temperature of 3,773 K,^[37] meaning it is brighter, yet cooler, than the Sun.^[7]^[24] The star is currently on the asymptotic giant branch and is generating energy through the nuclear fusion of hydrogen and helium along concentric shells surrounding an inert core of carbon and oxygen.^[40]

References

1. ^¹{{cite web | url=https://www.iau.org/public/themes/naming_stars/ | title=Naming Stars |publisher=IAU.org |accessdate=16 December 2017}}
2. ^{{citation | title=UCAC2 39641417 -- Double or multiple star | work=SIMBAD | publisher=Centre de Données astronomiques de Strasbourg | url=http://simbad.u-strasbg.fr/simbad/sim-id?Ident=WDS+J06230%2B2231BC&submit=submit+id | accessdate=2018-07-28 | postscript = . }}
3. ^{{cite arXiv |title=On the naming convention used for multiple star systems and extrasolar planets |date=2010 |eprint=1012.0707 |class=astro-ph.SR |last1= Hessman |first1=F. V. |last2= Dhillon |first2=V. S. |last3= Winget |first3=D. E. |last4= Schreiber |first4=M. R. |last5= Horne |first5=K. |last6= Marsh |first6=T. R. |last7= Guenther |first7=E. |last8= Schwope |first8=A. |last9= Heber |first9=U. }}
4. ^{{Cite web|url=https://www.iau.org/science/scientific_bodies/working_groups/280/|title=International Astronomical Union {{!}} IAU|website=www.iau.org|access-date=2017-04-01}}
5. ^{{cite web | url=https://www.iau.org/static/science/scientific_bodies/working_groups/280/wg-starnames-triennial-report-2015-2018.pdf | page=5 | title=WG Triennial Report (2015-2018) - Star Names |accessdate=2018-07-14}}
6. ^{{zh icon}} 中國星座神話, written by 陳久金. Published by 台灣書房出版有限公司, 2005, {{ISBN|978-986-7332-25-7}}.
7. ^{{zh icon}} 香港太空館 - 研究資源 - 亮星中英對照表 {{webarchive|url=https://web.archive.org/web/20100819122914/http://www.lcsd.gov.hk/CE/Museum/Space/Research/StarName/c_research_chinengstars_t_z.htm |date=2010-08-19 }}, Hong Kong Space Museum. Accessed on line November 23, 2010.
8. ^¹{{citation | title=Population Synthesis in the Blue. IV. Accurate Model Predictions for Lick Indices and UBV Colors in Single Stellar Populations | last1=Schiavon | first1=Ricardo P. | journal=The Astrophysical Journal Supplement Series | volume=171 | issue=1 | pages=146–205 | date=July 2007 | doi=10.1086/511753 | bibcode=2007ApJS..171..146S | arxiv=astro-ph/0611464 | postscript=. }}
9. ^¹{{citation | title=A Catalog of Stellar Angular Diameters Measured by Lunar Occultation | last1=White | first1=Nathaniel M. | last2=Feierman | first2=Barry H. | journal=Astronomical Journal | postscript=. | volume=94 | page=751 | date=September 1987 | doi=10.1086/114513 | bibcode=1987AJ.....94..751W }}
10. ^¹{{citation | last1=Mallik | first1=Sushma V. | title=Lithium abundance and mass | journal=Astronomy and Astrophysics | volume=352 | pages=495–507 |date=December 1999 | bibcode=1999A&A...352..495M | postscript=. }}
11. ^¹{{cite simbad | title=mu. Gem | accessdate=October 12, 2007 | postscript=. }}
12. ^¹²mu Gem{{dead link|date=February 2018 |bot=InternetArchiveBot |fix-attempted=yes }}, entry in the Combined General Catalog of Variable Stars (GCVS4.2){{dead link|date=February 2018 |bot=InternetArchiveBot |fix-attempted=yes }}, N. N. Samus, O. V. Durlevich, et al., database identifier II/250 at the Centre de Données astronomiques de Strasbourg.
13. ^¹{{cite conference | last1=Tsuji | first1=Takashi | contribution=Isotopic abundances of Carbon and Oxygen in Oxygen-rich giant stars | title=Convection in Astrophysics, Proceedings of IAU Symposium #239 held 21-25 August, 2006 in Prague, Czech Republic | journal=Proceedings of the International Astronomical Union | volume=2 | editor1-first=F. | editor1-last=Kupka | editor2-first=I. | editor2-last=Roxburgh | editor3-first=K. | editor3-last=Chan | pages=307–310 |date=May 2007 | doi=10.1017/S1743921307000622 | bibcode=2007IAUS..239..307T |arxiv = astro-ph/0610180 | postscript=. }}
14. ^¹{{citation | last1=Lebzelter | first1=T. | last2=Hron | first2=J. | title=BRITE stars on the AGB | journal=Communications in Asteroseismology | volume=152 | pages=178–181 |date=January 2008 | doi=10.1553/cia152s178 | bibcode=2008CoAst.152..178L | postscript=. }}
15. ^¹²{{citation | display-authors=1 | last1=Famaey | first1=B. | last2=Jorissen | first2=A. | last3=Luri | first3=X. | last4=Mayor | first4=M. | last5=Udry | first5=S. | last6=Dejonghe | first6=H. | last7=Turon | first7=C. | title=Local kinematics of K and M giants from CORAVEL/Hipparcos/Tycho-2 data. Revisiting the concept of superclusters | journal=Astronomy and Astrophysics | volume=430 | issue=1 | pages=165–186 |date=January 2005 | doi=10.1051/0004-6361:20041272 | bibcode=2005A&A...430..165F |arxiv = astro-ph/0409579 | postscript=. | url=https://www.aanda.org/10.1051/0004-6361:20041272/pdf | format=Submitted manuscript }}
16. ^¹²³{{citation | display-authors=1 | last1=Massarotti | first1=Alessandro | last2=Latham | first2=David W. | last3=Stefanik | first3=Robert P. | last4=Fogel | first4=Jeffrey | title=Rotational and Radial Velocities for a Sample of 761 HIPPARCOS Giants and the Role of Binarity | journal=The Astronomical Journal | volume=135 | issue=1 | pages=209–231 |date=January 2008 | doi=10.1088/0004-6256/135/1/209 | bibcode=2008AJ....135..209M | postscript=. }}
17. ^¹²³⁴{{citation | display-authors=1 | last1=Gutierrez-Moreno | first1=Adelina | last2=Moreno | first2=H. | last3=Stock | first3=J. | last4=Torres | first4=C. | last5=Wroblewski | first5=H. | title=A System of photometric standards | publisher=Publicaciones Universidad de Chile, Department de Astronomy | volume=1 | pages=1–17 | year=1966 | bibcode=1966PDAUC...1....1G | postscript=. }}
18. ^¹{{citation | page=236 | title=Star-names and Their Meanings | first1=Richard Hinckley | last1=Allen | publisher=G. E. Stechert | year=1899 }}
19. ^¹²³{{cite web|title=Tejat|publisher=Jim Kaler's STARS|url=http://stars.astro.illinois.edu/sow/tejat.html|accessdate=2017-03-31}}
20. ^¹²{{citation | last1=Morgan | first1=W. W. | last2=Keenan | first2=P. C. | title=Spectral Classification | journal=Annual Review of Astronomy and Astrophysics | volume=11 | page=29 | year=1973 | doi=10.1146/annurev.aa.11.090173.000333 | bibcode=1973ARA&A..11...29M | postscript=. }}
21. ^¹²³{{cite journal|doi=10.1051/0004-6361/201015014|bibcode=2011A&A...525A..71W|arxiv=1009.1491|title=Coudé-feed stellar spectral library – atmospheric parameters|journal=Astronomy & Astrophysics|volume=525|pages=A71|year=2010|last1=Wu|first1=Yue|last2=Singh|first2=H. P|last3=Prugniel|first3=P|last4=Gupta|first4=R|last5=Koleva|first5=M}}

词条	Mu Geminorum
释义	Nomenclature Properties References External links {{Starbox begin \| name = μ Geminorum }}{{Starbox image \| image={{Location mark \|image=Gemini constellation map.svg\|alt=\|float=center\|width=280 \|label=\|position=right \|mark=Red circle.svg\|mark_width=10\|mark_link=μ Gem \|x=738\|y=368 }} \|caption=Location of μ Geminorum (circled) }}{{Starbox observe \| constell = Gemini \| epoch = J2000.0 (ICRS) \| ra = {{RA\|06\|22\|57.62686}} \| dec = {{DEC\|+22\|30\|48.8979}} \| appmag_v = 2.857^[3] }}{{Starbox character \| class = M3 III^[4] \| b-v = +1.643^[3] \| u-b = +1.924^[3] \| variable = LB^[7] }}{{Starbox astrometry \| radial_v = +54.38 ± 0.24^[8] \| prop_mo_ra = +56.39 \| prop_mo_dec = –110.03 \| parallax = 14.08 \| p_error = 0.71 \| parallax_footnote = \| absmag_v = −1.42^[12] }}{{Starbox detail \| mass = 2.1^[13] \| radius = 80^[14] \| luminosity = 1,148^[14] \| temperature = 3,460^[16] \| gravity = 0.82^[16] \| metal_fe = {{val\|-0.03}}^[16] \| rotational_velocity = 8.4^[14] \| age_gyr = }}{{Starbox catalog \| names=Tejat, mu Geminorum, 13 Geminorum, ADS 4990A, BD+22°1304, CCDM J06230+2230A, FK5 241, HD 44478, HIP 30343, HR 2286, SAO 78297, WDS J06230+2231A.^[20] }}{{Starbox reference \| Simbad = mu+Gem }}{{Starbox end}}Mu Geminorum (μ Geminorum, abbreviated Mu Gem, μ Gem), also named Tejat,^[1] is a single star in the northern constellation of Gemini. From parallax measurements obtained during the Hipparcos mission, it is roughly {{Convert\|230\|ly\|pc\|abbr=off\|lk=on}} distant from the Sun. Mu Geminorum forms the primary or 'A' component of a double star system designated WDS J06230+2231 along with UCAC2 39641417^[2] (also designated WDS J06230+2231BC), itself a binary pair.^[24] Nomenclature μ Geminorum (Latinised to Mu Geminorum) is the star's Bayer designation. WDS J06230+2231 is the double star's designation in the Washington Double Star Catalog. The designations of the double star's components as WDS J06230+2231A and BC derive from the convention used by the Washington Multiplicity Catalog (WMC) for multiple star systems, and adopted by the International Astronomical Union (IAU).^[3] Mu Geminorum bore the traditional name of Tejat or Tejat Posterior which means 'back foot', because it is the foot of Castor, one of the Gemini twins. The name Tejat Posterior was formerly applied to an asterism consisting of this star, along with Gamma Geminorum (Alhena), Nu Geminorum, Eta Geminorum (Propus), and Xi Geminorum (Alzirr).^[24] In 2016, the International Astronomical Union organized a Working Group on Star Names (WGSN)^[4] to catalogue and standardize proper names for stars. The WGSN decided to attribute proper names to individual stars rather than entire multiple systems.^[5] It approved the name Tejat for the component WDS J06230+2231A (i.e. Mu Geminorum) on February 1, 2017 and it is now so included in the List of IAU-approved Star Names.^[1] The names Calx (Latin, meaning 'heel'), Pish Pai (from the Persian پیش‌پای ('pīshpāy', meaning 'foreleg'), and Nuhatai (from Arabic 'Al Nuḥātai', the dual form of 'Al Nuḥāt', 'a Camel's Hump') have also been applied to Mu Geminorum.^[30] In Chinese, {{lang\|zh\|井宿}} ({{lang\|zh-Latn\|Jǐng Su}}), meaning Well (asterism), refers to an asterism consisting of Mu Geminorum, Gamma Geminorum, Nu Geminorum, Xi Geminorum, Epsilon Geminorum, 36 Geminorum, Zeta Geminorum and Lambda Geminorum.^[6] Consequently, Mu Geminorum itself is known as {{lang\|zh\|井宿一}} ({{lang\|zh-Latn\|Jǐng Su yī}}, {{lang-en\|the First Star of Well}}).^[7] Properties Mu Geminorum has an average apparent visual magnitude of 2.9,^[3] which makes it the fourth-brightest member of Gemini. Because the star lies near the ecliptic, it is subject to occultations by the Moon.^[34] Seen from Earth, its brightness is reduced by 0.07 magnitudes by extinction from intervening gas and dust.^[8] It is a slow irregular variable of type LB. Its brightness varies between magnitude +2.75 and +3.02 over a 72-day period, along with a 2,000-day period of long term variation. It is a red giant at a stellar classification of M3 III,^[4] with a surface temperature of 3,773 K,^[37] meaning it is brighter, yet cooler, than the Sun.^[7]^[24] The star is currently on the asymptotic giant branch and is generating energy through the nuclear fusion of hydrogen and helium along concentric shells surrounding an inert core of carbon and oxygen.^[40] {{clear left}} References 1. ^¹{{cite web \| url=https://www.iau.org/public/themes/naming_stars/ \| title=Naming Stars \|publisher=IAU.org \|accessdate=16 December 2017}} 2. ^{{citation \| title=UCAC2 39641417 -- Double or multiple star \| work=SIMBAD \| publisher=Centre de Données astronomiques de Strasbourg \| url=http://simbad.u-strasbg.fr/simbad/sim-id?Ident=WDS+J06230%2B2231BC&submit=submit+id \| accessdate=2018-07-28 \| postscript = . }} 3. ^{{cite arXiv \|title=On the naming convention used for multiple star systems and extrasolar planets \|date=2010 \|eprint=1012.0707 \|class=astro-ph.SR \|last1= Hessman \|first1=F. V. \|last2= Dhillon \|first2=V. S. \|last3= Winget \|first3=D. E. \|last4= Schreiber \|first4=M. R. \|last5= Horne \|first5=K. \|last6= Marsh \|first6=T. R. \|last7= Guenther \|first7=E. \|last8= Schwope \|first8=A. \|last9= Heber \|first9=U. }} 4. ^{{Cite web\|url=https://www.iau.org/science/scientific_bodies/working_groups/280/\|title=International Astronomical Union {{!}} IAU\|website=www.iau.org\|access-date=2017-04-01}} 5. ^{{cite web \| url=https://www.iau.org/static/science/scientific_bodies/working_groups/280/wg-starnames-triennial-report-2015-2018.pdf \| page=5 \| title=WG Triennial Report (2015-2018) - Star Names \|accessdate=2018-07-14}} 6. ^{{zh icon}} 中國星座神話, written by 陳久金. Published by 台灣書房出版有限公司, 2005, {{ISBN\|978-986-7332-25-7}}. 7. ^{{zh icon}} 香港太空館 - 研究資源 - 亮星中英對照表 {{webarchive\|url=https://web.archive.org/web/20100819122914/http://www.lcsd.gov.hk/CE/Museum/Space/Research/StarName/c_research_chinengstars_t_z.htm \|date=2010-08-19 }}, Hong Kong Space Museum. Accessed on line November 23, 2010. 8. ^¹{{citation \| title=Population Synthesis in the Blue. IV. Accurate Model Predictions for Lick Indices and UBV Colors in Single Stellar Populations \| last1=Schiavon \| first1=Ricardo P. \| journal=The Astrophysical Journal Supplement Series \| volume=171 \| issue=1 \| pages=146–205 \| date=July 2007 \| doi=10.1086/511753 \| bibcode=2007ApJS..171..146S \| arxiv=astro-ph/0611464 \| postscript=. }} 9. ^¹{{citation \| title=A Catalog of Stellar Angular Diameters Measured by Lunar Occultation \| last1=White \| first1=Nathaniel M. \| last2=Feierman \| first2=Barry H. \| journal=Astronomical Journal \| postscript=. \| volume=94 \| page=751 \| date=September 1987 \| doi=10.1086/114513 \| bibcode=1987AJ.....94..751W }} 10. ^¹{{citation \| last1=Mallik \| first1=Sushma V. \| title=Lithium abundance and mass \| journal=Astronomy and Astrophysics \| volume=352 \| pages=495–507 \|date=December 1999 \| bibcode=1999A&A...352..495M \| postscript=. }} 11. ^¹{{cite simbad \| title=mu. Gem \| accessdate=October 12, 2007 \| postscript=. }} 12. ^¹²mu Gem{{dead link\|date=February 2018 \|bot=InternetArchiveBot \|fix-attempted=yes }}, entry in the Combined General Catalog of Variable Stars (GCVS4.2){{dead link\|date=February 2018 \|bot=InternetArchiveBot \|fix-attempted=yes }}, N. N. Samus, O. V. Durlevich, et al., database identifier II/250 at the Centre de Données astronomiques de Strasbourg. 13. ^¹{{cite conference \| last1=Tsuji \| first1=Takashi \| contribution=Isotopic abundances of Carbon and Oxygen in Oxygen-rich giant stars \| title=Convection in Astrophysics, Proceedings of IAU Symposium #239 held 21-25 August, 2006 in Prague, Czech Republic \| journal=Proceedings of the International Astronomical Union \| volume=2 \| editor1-first=F. \| editor1-last=Kupka \| editor2-first=I. \| editor2-last=Roxburgh \| editor3-first=K. \| editor3-last=Chan \| pages=307–310 \|date=May 2007 \| doi=10.1017/S1743921307000622 \| bibcode=2007IAUS..239..307T \|arxiv = astro-ph/0610180 \| postscript=. }} 14. ^¹{{citation \| last1=Lebzelter \| first1=T. \| last2=Hron \| first2=J. \| title=BRITE stars on the AGB \| journal=Communications in Asteroseismology \| volume=152 \| pages=178–181 \|date=January 2008 \| doi=10.1553/cia152s178 \| bibcode=2008CoAst.152..178L \| postscript=. }} 15. ^¹²{{citation \| display-authors=1 \| last1=Famaey \| first1=B. \| last2=Jorissen \| first2=A. \| last3=Luri \| first3=X. \| last4=Mayor \| first4=M. \| last5=Udry \| first5=S. \| last6=Dejonghe \| first6=H. \| last7=Turon \| first7=C. \| title=Local kinematics of K and M giants from CORAVEL/Hipparcos/Tycho-2 data. Revisiting the concept of superclusters \| journal=Astronomy and Astrophysics \| volume=430 \| issue=1 \| pages=165–186 \|date=January 2005 \| doi=10.1051/0004-6361:20041272 \| bibcode=2005A&A...430..165F \|arxiv = astro-ph/0409579 \| postscript=. \| url=https://www.aanda.org/10.1051/0004-6361:20041272/pdf \| format=Submitted manuscript }} 16. ^¹²³{{citation \| display-authors=1 \| last1=Massarotti \| first1=Alessandro \| last2=Latham \| first2=David W. \| last3=Stefanik \| first3=Robert P. \| last4=Fogel \| first4=Jeffrey \| title=Rotational and Radial Velocities for a Sample of 761 HIPPARCOS Giants and the Role of Binarity \| journal=The Astronomical Journal \| volume=135 \| issue=1 \| pages=209–231 \|date=January 2008 \| doi=10.1088/0004-6256/135/1/209 \| bibcode=2008AJ....135..209M \| postscript=. }} 17. ^¹²³⁴{{citation \| display-authors=1 \| last1=Gutierrez-Moreno \| first1=Adelina \| last2=Moreno \| first2=H. \| last3=Stock \| first3=J. \| last4=Torres \| first4=C. \| last5=Wroblewski \| first5=H. \| title=A System of photometric standards \| publisher=Publicaciones Universidad de Chile, Department de Astronomy \| volume=1 \| pages=1–17 \| year=1966 \| bibcode=1966PDAUC...1....1G \| postscript=. }} 18. ^¹{{citation \| page=236 \| title=Star-names and Their Meanings \| first1=Richard Hinckley \| last1=Allen \| publisher=G. E. Stechert \| year=1899 }} 19. ^¹²³{{cite web\|title=Tejat\|publisher=Jim Kaler's STARS\|url=http://stars.astro.illinois.edu/sow/tejat.html\|accessdate=2017-03-31}} 20. ^¹²{{citation \| last1=Morgan \| first1=W. W. \| last2=Keenan \| first2=P. C. \| title=Spectral Classification \| journal=Annual Review of Astronomy and Astrophysics \| volume=11 \| page=29 \| year=1973 \| doi=10.1146/annurev.aa.11.090173.000333 \| bibcode=1973ARA&A..11...29M \| postscript=. }} 21. ^¹²³{{cite journal\|doi=10.1051/0004-6361/201015014\|bibcode=2011A&A...525A..71W\|arxiv=1009.1491\|title=Coudé-feed stellar spectral library – atmospheric parameters\|journal=Astronomy & Astrophysics\|volume=525\|pages=A71\|year=2010\|last1=Wu\|first1=Yue\|last2=Singh\|first2=H. P\|last3=Prugniel\|first3=P\|last4=Gupta\|first4=R\|last5=Koleva\|first5=M}} ^[8]^[9]^[10]^[11]^[12]^[13]^[14]^[15]^[16]^[17]^[18]^[19]^[20]^[21] }} External links Astronomers Predict Eclipse of Naked-Eye Star by an Asteroid Monday Morning, Nov. 20 at Spaceref.com {{Stars of Gemini}} 10 : Bayer objects\|Flamsteed objects\|Gemini (constellation)\|Slow irregular variables\|M-type giants\|Stars with proper names\|Hipparcos objects\|HR objects\|Henry Draper Catalogue objects\|Durchmusterung objects
随便看	Demographics of Nauru Demographics of Nepal Demographics of New Caledonia Demographics of New York City Demographics of New Zealand Demographics of Nicaragua Demographics of Niger Demographics of Nigeria Demographics of Niue Demographics of Nord-Vest development region Demographics of Norfolk Island Demographics of North Korea Demographics of North Macedonia Demographics of Norway Demographics of Oman Demographics of Pakistan Demographics of Palau Demographics of Panama Demographics of Papua New Guinea Demographics of Paraguay Demographics of Paris Demographics of People's Republic of China Demographics of Peru Demographics of Polska Demographics of Portugal

Nomenclature

Properties

References

External links