“Beta Corvi”的意思、由来-开放百科全书

Beta Corvi (β Corvi, abbreviated Beta Crv, β Crv), also named Kraz,^[1] is the second-brightest star in the southern constellation of Corvus with an apparent visual magnitude of 2.647.^[3] Based on parallax measurements obtained during the Hipparcos mission, it is about {{Convert|146|ly|pc|abbr=off|lk=on}} distant from the Sun.

Nomenclature

It bore the traditional name of Kraz, whose origin and meaning remains unknown, though it appeared in a 1951 publication, Atlas Coeli (Skalnate Pleso Atlas of the Heavens) by Czech astronomer Antonín Bečvář.^[2]^[26]^[27] In 2016, the IAU organized a Working Group on Star Names (WGSN)^[3] to catalog and standardize proper names for stars. The WGSN approved the name Kraz for this star on 1 June 2018 and it is now so included in the List of IAU-approved Star Names.^[1]

In Chinese, {{lang|zh|軫宿}} ({{lang|zh-Latn|Zhěn Sù}}), meaning Chariot (asterism), refers to an asterism consisting of Beta, Gamma, Epsilon and Delta Corvi.^[4] Consequently, Beta Corvi itself is known as {{lang|zh|軫宿四}} ({{lang|zh-Latn|Zhěn Sù sì}}, {{lang-en|the Fourth Star of Chariot}}).^[5]

Properties

Beta Corvi has about 3.7 times the Sun's mass and is roughly 206 million years old,^[4] which is old enough for a star of this mass to consume the hydrogen at its core and evolve away from the main sequence. The stellar classification is G5 II,^[4] with the luminosity class of 'II' indicating this is a bright giant. The effective temperature of the star's outer envelope is about 5,100 K,^[4] which produces a yellow hue common to G-type stars.^[35]

The measured angular diameter of this star is {{nowrap|3.30 ± 0.17 mas}}.^[16] At an estimated distance of {{Convert|146|ly|pc|abbr=off|lk=on}}, this yields a physical size of about 16 times the radius of the Sun.^[26]^[39] Because of the star's mass and radius, it is emitting about 164 times the luminosity of the Sun.^[17] The abundance of elements other than hydrogen or helium, what astronomers term metallicity, is similar to the proportions in the Sun.^[12]

This is a variable star that ranges in apparent visual magnitude from a low of 2.66 to a high of 2.60.^[42]

See also

References

1. ^¹{{cite web | url=https://www.iau.org/public/themes/naming_stars/ | title=Naming Stars |publisher=IAU.org |accessdate=18 June 2018}}
2. ^{{cite book|author1=Kunitzch, Paul |author2=Smart, Tim | title=A Dictionary of Modern Star Names: A Short Guide to 254 Star Names and Their Derivations |year=2006 | publisher=Sky Publishing Corporation |location=Cambridge, Massachusetts |isbn=978-1-931559-44-7 | origyear=1986|page=62}}
3. ^{{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}}
4. ^{{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}}.
5. ^{{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/20110129031951/http://www.lcsd.gov.hk/CE/Museum/Space/Research/StarName/c_research_chinengstars_h_l.htm |date=2011-01-29 }}, Hong Kong Space Museum. Accessed on line November 23, 2010.
6. ^¹{{cite journal | last1=Evans | first1=D. S. | date=June 20–24, 1966 | editor1-last=Batten | editor1-first=Alan Henry | editor2-last=Heard | editor2-first=John Frederick | title=The Revision of the General Catalogue of Radial Velocities | booktitle=Determination of Radial Velocities and their Applications, Proceedings from IAU Symposium no. 30 | location=University of Toronto | publisher=International Astronomical Union | bibcode=1967IAUS...30...57E }}
7. ^¹{{cite journal | last1=Bernacca | first1=P. L. | last2=Perinotto | first2=M. | title=A catalogue of stellar rotational velocities | journal=Contributi Osservatorio Astronomico di Padova in Asiago | volume=239 | issue=1 | date=1970 | bibcode=1970CoAsi.239....1B }}
8. ^¹²³⁴{{cite journal | 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 | date=1966 | bibcode=1966PDAUC...1....1G }}
9. ^¹{{citation | display-authors=1 | last1=Kukarkin | first1=B. V. | last2=Kholopov | first2=P. N. | last3=Artiukhina | first3=N. M. | last4=Fedorovich | first4=V. P. | last5=Frolov | first5=M. S. | last6=Goranskij | first6=V. P. | last7=Gorynya | first7=N. A. | last8=Karitskaya | first8=E. A. | last9=Kireeva | first9=N. N. | title=Nachrichtenblatt der Vereinigung der Sternfreunde e.V. (Catalogue of suspected variable stars) | location=Moscow | publisher=Academy of Sciences USSR Shternberg | date=1981 | bibcode=1981NVS...C......0K }}
10. ^¹²³⁴⁵⁶⁷⁸{{cite journal | display-authors=1 | last1=Lyubimkov | first1=Leonid S. | last2=Lambert | first2=David L. | last3=Rostopchin | first3=Sergey I. | last4=Rachkovskaya | first4=Tamara M. | last5=Poklad | first5=Dmitry B. | title=Accurate fundamental parameters for A-, F- and G-type Supergiants in the solar neighbourhood | journal=Monthly Notices of the Royal Astronomical Society | volume=402 | issue=2 | pages=1369–1379 |date=February 2010 | doi=10.1111/j.1365-2966.2009.15979.x | bibcode=2010MNRAS.402.1369L |arxiv = 0911.1335 }}
11. ^¹²{{citation | first1=James B. | last1=Kaler | work=Stars | title=KRAZ (Beta Corvi) | publisher=University of Illinois | url=http://stars.astro.illinois.edu/sow/kraz.html | accessdate=2012-12-28 }}
12. ^¹²{{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 | pages=773–777 |date=February 2005 | doi=10.1051/0004-6361:20042039 | bibcode=2005A&A...431..773R }}
13. ^¹{{citation | first1=Kenneth R. | last1=Lang | title=Astrophysical formulae | volume=1 | series=Astronomy and astrophysics library | edition=3rd | publisher=Birkhäuser | date=2006 | isbn=3-540-29692-1 | url=https://books.google.com/books?id=OvTjLcQ4MCQC&pg=PA41 }}. The radius (R_*) is given by::

14. ^¹²HR 4786, database entry, The Bright Star Catalogue, 5th Revised Ed. (Preliminary Version), D. Hoffleit and W. H. Warren, Jr., CDS ID V/50. Accessed on line September 9, 2008.
15. ^¹²³{{citation | last1=Takeda | first1=Yoichi | last2=Sato | first2=Bun'ei | last3=Murata | first3=Daisuke | title=Stellar Parameters and Elemental Abundances of Late-G Giants | journal=Publications of the Astronomical Society of Japan | volume=60 | issue=4 | pages=781–802 |date=August 2008 | bibcode=2008PASJ...60..781T |arxiv = 0805.2434 | doi=10.1093/pasj/60.4.781}}
16. ^¹{{citation | first1=David E. | last1=Falkner | title=The Mythology of the Night Sky: An Amateur Astronomer's Guide to the Ancient Greek and Roman Legends | series=Patrick Moore's Practical Astronomy | publisher=Springer | date=2011 | isbn=1-4614-0136-4 | page=81 | url=https://books.google.com/books?id=tyj8UUE968wC&pg=PA81 }}
17. ^¹{{SIMBAD link|bet+crv|SV* ZI 946 -- Variable Star}}, database entry, SIMBAD. Accessed on line September 9, 2008.
18. ^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 |deadurl=yes |archiveurl=https://www.webcitation.org/6630AbtJZ?url=http://outreach.atnf.csiro.au/education/senior/astrophysics/photometry_colour.html |archivedate=2012-03-10 |df= }}
19. ^¹²{{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 }}

词条	Beta Corvi
释义	Nomenclature Properties See also References {{Starbox begin \| name = β Corvi }}{{Starbox image \| image={{Location mark \|image=Corvus constellation map.svg\|alt=\|float=center\|width=260 \|label=\|position=right \|mark=Red circle.svg\|mark_width=10\|mark_link=β Corvi \|x=432\|y=484 }} \|caption=Location of β Corvi (circled) }}{{Starbox observe \| epoch = J2000.0 \| equinox = J2000.0 (ICRS) \| constell = Corvus \| ra = {{RA\|12\|34\|23.23484}} \| dec = {{DEC\|−23\|23\|48.3374}} \| appmag_v = 2.647^[3] }}{{Starbox character \| class = G5 II^[4] \| u-b = +0.586^[3] \| b-v = +0.898^[3] \| r-i = +0.44^[7] }}{{Starbox astrometry \| radial_v = −7.6^[8] \| prop_mo_ra = +1.11 \| prop_mo_dec = −56.56 \| parallax = 22.39 \| p_error = 0.18 \| parallax_footnote = \| absmag_v = –0.61^[12] }}{{Starbox detail \| age = {{nowrap\|2.06 × 10⁸}}^[4] \| metal_fe = –0.01^[12] \| mass = {{nowrap\|3.7 ± 0.1}}^[4] \| radius = 16^[16] \| luminosity = 164^[17] \| temperature = {{nowrap\|5,100 ± 80}}^[4] \| gravity = {{nowrap\|2.52 ± 0.03}}^[4] \| rotational_velocity = 8^[20] }}{{Starbox catalog \| names=Kraz, β Crv, Beta Corvi, Beta Crv, 9 Corvi, 9 Crv, BD−22 3401, CD−22 3401, CD−22 9505, CPD−22 5388, FK5 471, GC 17133, HD 109379, HIP 61359, HR 4786, PPM 260512, SAO 180915.^[7]^[22] }}{{Starbox reference \| Simbad=bet+crv }}{{Starbox end}} Beta Corvi (β Corvi, abbreviated Beta Crv, β Crv), also named Kraz,^[1] is the second-brightest star in the southern constellation of Corvus with an apparent visual magnitude of 2.647.^[3] Based on parallax measurements obtained during the Hipparcos mission, it is about {{Convert\|146\|ly\|pc\|abbr=off\|lk=on}} distant from the Sun. Nomenclature β Corvi (Latinised to Beta Corvi) is the star's Bayer designation. It bore the traditional name of Kraz, whose origin and meaning remains unknown, though it appeared in a 1951 publication, Atlas Coeli (Skalnate Pleso Atlas of the Heavens) by Czech astronomer Antonín Bečvář.^[2]^[26]^[27] In 2016, the IAU organized a Working Group on Star Names (WGSN)^[3] to catalog and standardize proper names for stars. The WGSN approved the name Kraz for this star on 1 June 2018 and it is now so included in the List of IAU-approved Star Names.^[1] In Chinese, {{lang\|zh\|軫宿}} ({{lang\|zh-Latn\|Zhěn Sù}}), meaning Chariot (asterism), refers to an asterism consisting of Beta, Gamma, Epsilon and Delta Corvi.^[4] Consequently, Beta Corvi itself is known as {{lang\|zh\|軫宿四}} ({{lang\|zh-Latn\|Zhěn Sù sì}}, {{lang-en\|the Fourth Star of Chariot}}).^[5] Properties Beta Corvi has about 3.7 times the Sun's mass and is roughly 206 million years old,^[4] which is old enough for a star of this mass to consume the hydrogen at its core and evolve away from the main sequence. The stellar classification is G5 II,^[4] with the luminosity class of 'II' indicating this is a bright giant. The effective temperature of the star's outer envelope is about 5,100 K,^[4] which produces a yellow hue common to G-type stars.^[35] The measured angular diameter of this star is {{nowrap\|3.30 ± 0.17 mas}}.^[16] At an estimated distance of {{Convert\|146\|ly\|pc\|abbr=off\|lk=on}}, this yields a physical size of about 16 times the radius of the Sun.^[26]^[39] Because of the star's mass and radius, it is emitting about 164 times the luminosity of the Sun.^[17] The abundance of elements other than hydrogen or helium, what astronomers term metallicity, is similar to the proportions in the Sun.^[12] This is a variable star that ranges in apparent visual magnitude from a low of 2.66 to a high of 2.60.^[42] See also A Carinae 55 Cancri Beta Corvi in fiction References 1. ^¹{{cite web \| url=https://www.iau.org/public/themes/naming_stars/ \| title=Naming Stars \|publisher=IAU.org \|accessdate=18 June 2018}} 2. ^{{cite book\|author1=Kunitzch, Paul \|author2=Smart, Tim \| title=A Dictionary of Modern Star Names: A Short Guide to 254 Star Names and Their Derivations \|year=2006 \| publisher=Sky Publishing Corporation \|location=Cambridge, Massachusetts \|isbn=978-1-931559-44-7 \| origyear=1986\|page=62}} 3. ^{{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}} 4. ^{{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}}. 5. ^{{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/20110129031951/http://www.lcsd.gov.hk/CE/Museum/Space/Research/StarName/c_research_chinengstars_h_l.htm \|date=2011-01-29 }}, Hong Kong Space Museum. Accessed on line November 23, 2010. 6. ^¹{{cite journal \| last1=Evans \| first1=D. S. \| date=June 20–24, 1966 \| editor1-last=Batten \| editor1-first=Alan Henry \| editor2-last=Heard \| editor2-first=John Frederick \| title=The Revision of the General Catalogue of Radial Velocities \| booktitle=Determination of Radial Velocities and their Applications, Proceedings from IAU Symposium no. 30 \| location=University of Toronto \| publisher=International Astronomical Union \| bibcode=1967IAUS...30...57E }} 7. ^¹{{cite journal \| last1=Bernacca \| first1=P. L. \| last2=Perinotto \| first2=M. \| title=A catalogue of stellar rotational velocities \| journal=Contributi Osservatorio Astronomico di Padova in Asiago \| volume=239 \| issue=1 \| date=1970 \| bibcode=1970CoAsi.239....1B }} 8. ^¹²³⁴{{cite journal \| 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 \| date=1966 \| bibcode=1966PDAUC...1....1G }} 9. ^¹{{citation \| display-authors=1 \| last1=Kukarkin \| first1=B. V. \| last2=Kholopov \| first2=P. N. \| last3=Artiukhina \| first3=N. M. \| last4=Fedorovich \| first4=V. P. \| last5=Frolov \| first5=M. S. \| last6=Goranskij \| first6=V. P. \| last7=Gorynya \| first7=N. A. \| last8=Karitskaya \| first8=E. A. \| last9=Kireeva \| first9=N. N. \| title=Nachrichtenblatt der Vereinigung der Sternfreunde e.V. (Catalogue of suspected variable stars) \| location=Moscow \| publisher=Academy of Sciences USSR Shternberg \| date=1981 \| bibcode=1981NVS...C......0K }} 10. ^¹²³⁴⁵⁶⁷⁸{{cite journal \| display-authors=1 \| last1=Lyubimkov \| first1=Leonid S. \| last2=Lambert \| first2=David L. \| last3=Rostopchin \| first3=Sergey I. \| last4=Rachkovskaya \| first4=Tamara M. \| last5=Poklad \| first5=Dmitry B. \| title=Accurate fundamental parameters for A-, F- and G-type Supergiants in the solar neighbourhood \| journal=Monthly Notices of the Royal Astronomical Society \| volume=402 \| issue=2 \| pages=1369–1379 \|date=February 2010 \| doi=10.1111/j.1365-2966.2009.15979.x \| bibcode=2010MNRAS.402.1369L \|arxiv = 0911.1335 }} 11. ^¹²{{citation \| first1=James B. \| last1=Kaler \| work=Stars \| title=KRAZ (Beta Corvi) \| publisher=University of Illinois \| url=http://stars.astro.illinois.edu/sow/kraz.html \| accessdate=2012-12-28 }} 12. ^¹²{{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 \| pages=773–777 \|date=February 2005 \| doi=10.1051/0004-6361:20042039 \| bibcode=2005A&A...431..773R }} 13. ^¹{{citation \| first1=Kenneth R. \| last1=Lang \| title=Astrophysical formulae \| volume=1 \| series=Astronomy and astrophysics library \| edition=3rd \| publisher=Birkhäuser \| date=2006 \| isbn=3-540-29692-1 \| url=https://books.google.com/books?id=OvTjLcQ4MCQC&pg=PA41 }}. The radius (R_) is given by:: 14. ^¹²HR 4786, database entry, The Bright Star Catalogue, 5th Revised Ed. (Preliminary Version), D. Hoffleit and W. H. Warren, Jr., CDS ID V/50. Accessed on line September 9, 2008. 15. ^¹²³{{citation \| last1=Takeda \| first1=Yoichi \| last2=Sato \| first2=Bun'ei \| last3=Murata \| first3=Daisuke \| title=Stellar Parameters and Elemental Abundances of Late-G Giants \| journal=Publications of the Astronomical Society of Japan \| volume=60 \| issue=4 \| pages=781–802 \|date=August 2008 \| bibcode=2008PASJ...60..781T \|arxiv = 0805.2434 \| doi=10.1093/pasj/60.4.781}} 16. ^¹{{citation \| first1=David E. \| last1=Falkner \| title=The Mythology of the Night Sky: An Amateur Astronomer's Guide to the Ancient Greek and Roman Legends \| series=Patrick Moore's Practical Astronomy \| publisher=Springer \| date=2011 \| isbn=1-4614-0136-4 \| page=81 \| url=https://books.google.com/books?id=tyj8UUE968wC&pg=PA81 }} 17. ^¹{{SIMBAD link\|bet+crv\|SV ZI 946 -- Variable Star}}, database entry, SIMBAD. Accessed on line September 9, 2008. 18. ^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 \|deadurl=yes \|archiveurl=https://www.webcitation.org/6630AbtJZ?url=http://outreach.atnf.csiro.au/education/senior/astrophysics/photometry_colour.html \|archivedate=2012-03-10 \|df= }} 19. ^¹²{{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 }} ^[6]^[7]^[8]^[9]^[10]^[11]^[12]^[13]^[14]^[15]^[16]^[17]^[18]^[19] }}{{Stars of Corvus}} 9 : Corvus (constellation)\|G-type bright giants\|Flamsteed objects\|Bayer objects\|Henry Draper Catalogue objects\|Hipparcos objects\|Durchmusterung objects\|Stars with proper names\|HR objects
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