“Xi Geminorum”的意思、由来-开放百科全书

It bore the traditional name of Al Zirr, meaning "the button" in Arabic.^[24] In 2016, the IAU organized a Working Group on Star Names (WGSN)^[2] to catalog and standardize proper names for stars. The WGSN approved the name Alzirr for this star on 30 June 2017 and it is now so included in the List of IAU-approved Star Names.^[1]

This star, along with Gamma Geminorum (Alhena), Mu Geminorum, Nu Geminorum and Eta Geminorum were Al Han'ah, "the brand" (on the neck of the camel). They also were associated in Al Nuḥātai, the dual form of Al Nuḥāt, "a Camel's Hump".^[24]

In Chinese, {{lang|zh|井宿}} ({{lang|zh-Latn|Jǐng Su}}), meaning Well (asterism), refers to an asterism consisting of Xi Geminorum, Mu Geminorum, Nu Geminorum, Gamma Geminorum, Epsilon Geminorum, 36 Geminorum, Zeta Geminorum and Lambda Geminorum.^[3] Consequently, Xi Geminorum itself is known as {{lang|zh|井宿四}} ({{lang|zh-Latn|Jǐng Su sì}}, {{lang-en|the Fourth Star of Well}}.)^[4]

Properties

Although generally considered a single star, there is some evidence that Xi Geminorum may instead be a spectroscopic binary system consisting of two component stars of equal mass.^[30]

Xi Geminorum has a stellar classification of F5 IV-V, which is subgiant star that is in the process of evolving away from the main sequence of stars like the Sun. It has about 162%^[11] of the Sun's mass and is radiating more than 11 times the luminosity of the Sun.^[16] This energy is being emitted from the outer envelope of the star at an effective temperature of 6,464 K.^[16] This causes the star to take on the yellow-white hue common to F-type stars.^[34]

X-ray emission has been detected from this star, which has an estimated X-ray luminosity of {{nowrap|1.06 × 10²⁹ erg s⁻¹}}.^[11] It has the spectroscopic signature of a rapidly rotating star, with a projected rotational velocity of about 66 km s⁻¹.^[18]

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. ^{{cite web | url=https://www.iau.org/science/scientific_bodies/working_groups/280/ | title=IAU Working Group on Star Names (WGSN)|accessdate=22 May 2016}}
3. ^{{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}}.
4. ^{{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/20081025110153/http://www.lcsd.gov.hk/CE/Museum/Space/Research/StarName/c_research_chinengstars_ala_alz.htm |date=October 25, 2008 }}, Hong Kong Space Museum. Accessed on line November 23, 2010.
5. ^¹²³{{citation | display-authors=1 | title=Sixth Catalogue of Fundamental Stars (FK6). Part I. Basic fundamental stars with direct solutions | journal=Veröff. Astron. Rechen-Inst. Heidelb | volume=35 | last1=Wielen | first1=R. | last2=Schwan | first2=H. | last3=Dettbarn | first3=C. | last4=Lenhardt | first4=H. | last5=Jahreiß | first5=H. | last6=Jährling | first6=R. | publisher=Astronomisches Rechen-Institut Heidelberg | issue=35 | year=1999 | bibcode=1999VeARI..35....1W }}
6. ^¹²{{cite journal | 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 | year=1966 | bibcode=1966CoLPL...4...99J }}
7. ^¹{{cite journal | last1=Holmberg | first1=J. | last2=Nordstrom | first2=B. | last3=Andersen | first3=J. | title=The Geneva-Copenhagen survey of the solar neighbourhood. III. Improved distances, ages, and kinematics | journal=Astronomy and Astrophysics | volume=501 | issue=3 |date=July 2009 | pages=941–947 | doi=10.1051/0004-6361/200811191 | bibcode=2009A&A...501..941H|arxiv = 0811.3982 }}
8. ^¹²³⁴{{citation | last1=Pijpers | first1=F. P. | title=Selection criteria for targets of asteroseismic campaigns | journal=Astronomy and Astrophysics | volume=400 | pages=241–248 |date=March 2003 | doi=10.1051/0004-6361:20021839 | bibcode=2003A&A...400..241P |arxiv = astro-ph/0303032 }}
9. ^¹²³{{citation | last1=Pizzolato | first1=N. | last2=Maggio | first2=A. | last3=Sciortino | first3=S. | title=Evolution of X-ray activity of 1-3 M_sun late-type stars in early post-main-sequence phases | journal=Astronomy and Astrophysics | volume=361 | pages=614–628 |date=September 2000 | bibcode=2000A&A...361..614P }}
10. ^¹²{{citation | last1=Reiners | first1=A. | title=Rotation- and temperature-dependence of stellar latitudinal differential rotation | journal=Astronomy and Astrophysics | volume=446 | issue=1 | pages=267–277 |date=January 2006 | doi=10.1051/0004-6361:20053911 | bibcode=2006A&A...446..267R |arxiv = astro-ph/0509399 }}
11. ^¹²{{cite book | last=Allen | first=R. H. | year=1963 | authorlink=Richard Hinckley Allen | title=Star Names: Their Lore and Meaning | url=http://penelope.uchicago.edu/Thayer/E/Gazetteer/Topics/astronomy/_Texts/secondary/ALLSTA/Gemini*.html | accessdate=2010-12-12 | edition=Reprint | publisher=Dover Publications Inc | location=New York, NY | isbn=0-486-21079-0 | page=234}}
12. ^¹{{citation | display-authors=1 | last1=Fuhrmann | first1=K. | last2=Chini | first2=R. | last3=Hoffmeister | first3=V. H. | last4=Lemke | first4=R. | last5=Murphy | first5=M. | last6=Seifert | first6=W. | last7=Stahl | first7=O. | title=BESO échelle spectroscopy of solar-type stars at Cerro Armazones | journal=Monthly Notices of the Royal Astronomical Society | volume=411 | issue=4 | pages=2311–2318 |date=March 2011 | doi=10.1111/j.1365-2966.2010.17850.x | bibcode=2011MNRAS.411.2311F }}
13. ^¹{{citation | first1=Stephen James | last1=O'Meara | title=The Caldwell objects | series=Deep-sky companions | publisher=Cambridge University Press | year=2002 | isbn=0-521-82796-5 | page=185 | url=https://books.google.com/books?id=3Hg6YHgx9nAC&pg=PA185 }}
14. ^¹{{citation | title=The Colour of Stars | date=December 21, 2004 | work=Australia Telescope, Outreach and Education | publisher=Commonwealth Scientific and Industrial Research Organisation | url=http://outreach.atnf.csiro.au/education/senior/astrophysics/photometry_colour.html | accessdate=2012-01-16 }}
15. ^¹²³⁴{{citation | display-authors=1 | last1=Boyajian | first1=Tabetha S. | last2=McAlister | first2=Harold A. | last3=van Belle | first3=Gerard | last4=Gies | first4=Douglas R. | last5=ten Brummelaar | first5=Theo A. | last6=von Braun | first6=Kaspar | last7=Farrington | first7=Chris | last8=Goldfinger | first8=P. J. | last9=O'Brien | first9=David | last10=Parks | first10=J. Robert | last11=Richardson | first11=Noel D. | last12=Ridgway | first12=Stephen | last13=Schaefer | first13=Gail | last14=Sturmann | first14=Laszlo | last15=Sturmann | first15=Judit | last16=Touhami | first16=Yamina | last17=Turner | first17=Nils H. | last18=White | first18=Russel | title=Stellar Diameters and Temperatures. I. Main-sequence A, F, and G Stars | journal=The Astrophysical Journal | volume=746 | issue=1 | page=101 |date=February 2012 | doi=10.1088/0004-637X/746/1/101 | bibcode=2012ApJ...746..101B |arxiv = 1112.3316 }}. See Table 10 & 12.
16. ^¹{{cite journal|bibcode=2003AJ....126.2048G|arxiv=astro-ph/0308182|title=Contributions to the Nearby Stars (NStars) Project: Spectroscopy of Stars Earlier than M0 within 40 Parsecs: The Northern Sample. I|journal=The Astronomical Journal|volume=126|issue=4|pages=2048|author1=Gray|first1=R. O.|last2=Corbally|first2=C. J.|last3=Garrison|first3=R. F.|last4=McFadden|first4=M. T.|last5=Robinson|first5=P. E.|year=2003|doi=10.1086/378365}}

词条	Xi Geminorum
释义	Nomenclature Properties References External links {{Starbox begin \| name = Xi Geminorum }}{{Starbox image \| image = \| caption=Location of ξ Geminorum (circled) }}{{Starbox observe \| epoch = J2000.0 \| equinox = J2000.0 (ICRS) \| constell = Gemini \| ra = {{RA\|06\|45\|17.36432}} \| dec = {{DEC\|+12\|53\|44.1311}} \| appmag_v = 3.35^[3] }}{{Starbox character \| class = F5 IV-V^[4] \| b-v = +0.43^[5] \| u-b = +0.06^[5] \| r-i = }}{{Starbox astrometry \| radial_v = +25.6^[3] \| prop_mo_ra = –115.73 \| prop_mo_dec = –190.55 \| parallax = 55.56 \| p_error = 0.19 \| parallax_footnote = \| absmag_v = 2.14^[11] }}{{Starbox detail \| mass = {{nowrap\|1.706 ± 0.012}}^[12] \| radius = {{nowrap\|2.710 ± 0.021}}^[12] \| luminosity = {{nowrap\|11.574 ± 0.238}}^[12] \| temperature = {{nowrap\|6,480 ± 39}}^[12] \| gravity = {{nowrap\|3.81 ± 0.02}}^[16] \| metal_fe = {{nowrap\|0.00 ± 0.01}}^[16] \| rotational_velocity = {{nowrap\|66.1 ± 3.3}}^[18] \| rotation = \| age_gyr = 1.5^[19] }}{{Starbox catalog \| names = 31 Geminorum, HR 2484, HD 48737, BD+13°1396, FK5 256, HIP 32362, SAO 96074 }}{{Starbox reference \| Simbad = Xi+Geminorum }}{{Starbox end}}Xi Geminorum (ξ Geminorum, abbreviated Xi Gem, ξ Gem), also named Alzirr,^[1] is a star in the zodiac constellation of Gemini. It forms one of the four feet of the outline demarcating the Gemini twins.^[21] The star has an apparent visual magnitude of 3.35,^[3] which is bright enough for it to be seen with the naked eye. From stellar parallax measurements, its distance from the Sun can be estimated as {{Convert\|58.7\|ly\|pc\|abbr=off\|lk=on}}. Nomenclature ξ Geminorum (Latinised to Xi Geminorum) is the star's Bayer designation. It bore the traditional name of Al Zirr, meaning "the button" in Arabic.^[24] In 2016, the IAU organized a Working Group on Star Names (WGSN)^[2] to catalog and standardize proper names for stars. The WGSN approved the name Alzirr for this star on 30 June 2017 and it is now so included in the List of IAU-approved Star Names.^[1] This star, along with Gamma Geminorum (Alhena), Mu Geminorum, Nu Geminorum and Eta Geminorum were Al Han'ah, "the brand" (on the neck of the camel). They also were associated in Al Nuḥātai, the dual form of Al Nuḥāt, "a Camel's Hump".^[24] In Chinese, {{lang\|zh\|井宿}} ({{lang\|zh-Latn\|Jǐng Su}}), meaning Well (asterism), refers to an asterism consisting of Xi Geminorum, Mu Geminorum, Nu Geminorum, Gamma Geminorum, Epsilon Geminorum, 36 Geminorum, Zeta Geminorum and Lambda Geminorum.^[3] Consequently, Xi Geminorum itself is known as {{lang\|zh\|井宿四}} ({{lang\|zh-Latn\|Jǐng Su sì}}, {{lang-en\|the Fourth Star of Well}}.)^[4] Properties Although generally considered a single star, there is some evidence that Xi Geminorum may instead be a spectroscopic binary system consisting of two component stars of equal mass.^[30] Xi Geminorum has a stellar classification of F5 IV-V, which is subgiant star that is in the process of evolving away from the main sequence of stars like the Sun. It has about 162%^[11] of the Sun's mass and is radiating more than 11 times the luminosity of the Sun.^[16] This energy is being emitted from the outer envelope of the star at an effective temperature of 6,464 K.^[16] This causes the star to take on the yellow-white hue common to F-type stars.^[34] X-ray emission has been detected from this star, which has an estimated X-ray luminosity of {{nowrap\|1.06 × 10²⁹ erg s⁻¹}}.^[11] It has the spectroscopic signature of a rapidly rotating star, with a projected rotational velocity of about 66 km s⁻¹.^[18] 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. ^{{cite web \| url=https://www.iau.org/science/scientific_bodies/working_groups/280/ \| title=IAU Working Group on Star Names (WGSN)\|accessdate=22 May 2016}} 3. ^{{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}}. 4. ^{{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/20081025110153/http://www.lcsd.gov.hk/CE/Museum/Space/Research/StarName/c_research_chinengstars_ala_alz.htm \|date=October 25, 2008 }}, Hong Kong Space Museum. Accessed on line November 23, 2010. 5. ^¹²³{{citation \| display-authors=1 \| title=Sixth Catalogue of Fundamental Stars (FK6). Part I. Basic fundamental stars with direct solutions \| journal=Veröff. Astron. Rechen-Inst. Heidelb \| volume=35 \| last1=Wielen \| first1=R. \| last2=Schwan \| first2=H. \| last3=Dettbarn \| first3=C. \| last4=Lenhardt \| first4=H. \| last5=Jahreiß \| first5=H. \| last6=Jährling \| first6=R. \| publisher=Astronomisches Rechen-Institut Heidelberg \| issue=35 \| year=1999 \| bibcode=1999VeARI..35....1W }} 6. ^¹²{{cite journal \| 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 \| year=1966 \| bibcode=1966CoLPL...4...99J }} 7. ^¹{{cite journal \| last1=Holmberg \| first1=J. \| last2=Nordstrom \| first2=B. \| last3=Andersen \| first3=J. \| title=The Geneva-Copenhagen survey of the solar neighbourhood. III. Improved distances, ages, and kinematics \| journal=Astronomy and Astrophysics \| volume=501 \| issue=3 \|date=July 2009 \| pages=941–947 \| doi=10.1051/0004-6361/200811191 \| bibcode=2009A&A...501..941H\|arxiv = 0811.3982 }} 8. ^¹²³⁴{{citation \| last1=Pijpers \| first1=F. P. \| title=Selection criteria for targets of asteroseismic campaigns \| journal=Astronomy and Astrophysics \| volume=400 \| pages=241–248 \|date=March 2003 \| doi=10.1051/0004-6361:20021839 \| bibcode=2003A&A...400..241P \|arxiv = astro-ph/0303032 }} 9. ^¹²³{{citation \| last1=Pizzolato \| first1=N. \| last2=Maggio \| first2=A. \| last3=Sciortino \| first3=S. \| title=Evolution of X-ray activity of 1-3 M_sun late-type stars in early post-main-sequence phases \| journal=Astronomy and Astrophysics \| volume=361 \| pages=614–628 \|date=September 2000 \| bibcode=2000A&A...361..614P }} 10. ^¹²{{citation \| last1=Reiners \| first1=A. \| title=Rotation- and temperature-dependence of stellar latitudinal differential rotation \| journal=Astronomy and Astrophysics \| volume=446 \| issue=1 \| pages=267–277 \|date=January 2006 \| doi=10.1051/0004-6361:20053911 \| bibcode=2006A&A...446..267R \|arxiv = astro-ph/0509399 }} 11. ^¹²{{cite book \| last=Allen \| first=R. H. \| year=1963 \| authorlink=Richard Hinckley Allen \| title=Star Names: Their Lore and Meaning \| url=http://penelope.uchicago.edu/Thayer/E/Gazetteer/Topics/astronomy/_Texts/secondary/ALLSTA/Gemini*.html \| accessdate=2010-12-12 \| edition=Reprint \| publisher=Dover Publications Inc \| location=New York, NY \| isbn=0-486-21079-0 \| page=234}} 12. ^¹{{citation \| display-authors=1 \| last1=Fuhrmann \| first1=K. \| last2=Chini \| first2=R. \| last3=Hoffmeister \| first3=V. H. \| last4=Lemke \| first4=R. \| last5=Murphy \| first5=M. \| last6=Seifert \| first6=W. \| last7=Stahl \| first7=O. \| title=BESO échelle spectroscopy of solar-type stars at Cerro Armazones \| journal=Monthly Notices of the Royal Astronomical Society \| volume=411 \| issue=4 \| pages=2311–2318 \|date=March 2011 \| doi=10.1111/j.1365-2966.2010.17850.x \| bibcode=2011MNRAS.411.2311F }} 13. ^¹{{citation \| first1=Stephen James \| last1=O'Meara \| title=The Caldwell objects \| series=Deep-sky companions \| publisher=Cambridge University Press \| year=2002 \| isbn=0-521-82796-5 \| page=185 \| url=https://books.google.com/books?id=3Hg6YHgx9nAC&pg=PA185 }} 14. ^¹{{citation \| title=The Colour of Stars \| date=December 21, 2004 \| work=Australia Telescope, Outreach and Education \| publisher=Commonwealth Scientific and Industrial Research Organisation \| url=http://outreach.atnf.csiro.au/education/senior/astrophysics/photometry_colour.html \| accessdate=2012-01-16 }} 15. ^¹²³⁴{{citation \| display-authors=1 \| last1=Boyajian \| first1=Tabetha S. \| last2=McAlister \| first2=Harold A. \| last3=van Belle \| first3=Gerard \| last4=Gies \| first4=Douglas R. \| last5=ten Brummelaar \| first5=Theo A. \| last6=von Braun \| first6=Kaspar \| last7=Farrington \| first7=Chris \| last8=Goldfinger \| first8=P. J. \| last9=O'Brien \| first9=David \| last10=Parks \| first10=J. Robert \| last11=Richardson \| first11=Noel D. \| last12=Ridgway \| first12=Stephen \| last13=Schaefer \| first13=Gail \| last14=Sturmann \| first14=Laszlo \| last15=Sturmann \| first15=Judit \| last16=Touhami \| first16=Yamina \| last17=Turner \| first17=Nils H. \| last18=White \| first18=Russel \| title=Stellar Diameters and Temperatures. I. Main-sequence A, F, and G Stars \| journal=The Astrophysical Journal \| volume=746 \| issue=1 \| page=101 \|date=February 2012 \| doi=10.1088/0004-637X/746/1/101 \| bibcode=2012ApJ...746..101B \|arxiv = 1112.3316 }}. See Table 10 & 12. 16. ^¹{{cite journal\|bibcode=2003AJ....126.2048G\|arxiv=astro-ph/0308182\|title=Contributions to the Nearby Stars (NStars) Project: Spectroscopy of Stars Earlier than M0 within 40 Parsecs: The Northern Sample. I\|journal=The Astronomical Journal\|volume=126\|issue=4\|pages=2048\|author1=Gray\|first1=R. O.\|last2=Corbally\|first2=C. J.\|last3=Garrison\|first3=R. F.\|last4=McFadden\|first4=M. T.\|last5=Robinson\|first5=P. E.\|year=2003\|doi=10.1086/378365}} ^[5]^[6]^[7]^[8]^[9]^[10]^[11]^[12]^[13]^[14]^[15]^[16] }} External links {{citation \| first1=James B. \| last1=Kaler \| title=Al ZIRR (Xi Geminorum) \| work=SIMBAD \| publisher=University of Illinois \| url=http://stars.astro.illinois.edu/sow/alzirr.html \| accessdate=2012-01-20 }} {{Stars of Gemini}} 10 : F-type subgiants\|Gemini (constellation)\|Bayer objects\|Stars with proper names\|Gliese and GJ objects\|Flamsteed objects\|Hipparcos objects\|HR objects\|Henry Draper Catalogue objects\|Durchmusterung objects
随便看	Virginia State Route 647 (Northampton County) Virginia State Route 647 (Northumberland County) Virginia State Route 647 (Nottoway County) Virginia State Route 647 (Orange County) Virginia State Route 647 (Page County) Virginia State Route 647 (Patrick County) Virginia State Route 647 (Pittsylvania County) Virginia State Route 647 (Powhatan County) Virginia State Route 647 (Prince Edward County) Virginia State Route 647 (Prince George County) Virginia State Route 647 (Prince William County) Virginia State Route 647 (Pulaski County) Virginia State Route 647 (Rappahannock County) Virginia State Route 647 (Richmond County) Virginia State Route 647 (Roanoke County) Virginia State Route 647 (Rockbridge County) Virginia State Route 647 (Rockingham County) Virginia State Route 647 (Russell County) Virginia State Route 647 (Scott County) Virginia State Route 647 (Shenandoah County) Virginia State Route 647 (Smyth County) Virginia State Route 647 (Southampton County) Virginia State Route 647 (Spotsylvania County) Virginia State Route 647 (Stafford County) Virginia State Route 647 (Surry County)

Nomenclature

Properties

References

External links