“Alpha Sagittae”的意思、由来-开放百科全书

This is an evolved bright giant with a stellar classification of G1 II. It is 151^[11] million years old with 4^[11] times the mass of the Sun and has expanded to around 21^[12] times the Sun's radius. It is radiating 340 times the Sun's luminosity from its enlarged photosphere at an effective temperature of 5,333 K. There is an X-ray source within {{Val|12|ul=arcsecond}} of these coordinates.^[29]

Nomenclature

This star bore the traditional name Sham (or Alsahm), which derives from the Arabic word سهم sahm, meaning "arrow", the name formerly having been applied to the whole constellation. In 2016, the International Astronomical Union organized a Working Group on Star Names (WGSN)^[30] to catalogue and standardize proper names for stars. The WGSN approved the name Sham for this star on 12 September 2016 and it is now so included in the List of IAU-approved Star Names.^[20]

In Chinese, {{lang|zh|左旗}} ({{lang|zh-Latn|Zuǒ Qí}}), meaning Left Flag, refers to an asterism consisting of Alpha Sagittae, Beta Sagittae, Delta Sagittae, Zeta Sagittae, Gamma Sagittae, 13 Sagittae, 11 Sagittae, 14 Sagittae and Rho Aquilae. Consequently, Alpha Sagittae itself is known as {{lang|zh|左旗一}} ({{lang|zh-Latn|Zuǒ Qí yī}}, {{lang-en|the First Star of Left Flag}}).^[3]

References

1. ^¹²³⁴{{cite DR2|1824277055360974720}}
2. ^{{cite simbad | title=5 Sge | access-date=2019-03-30 }}
3. ^{{zh icon}} AEEA (Activities of Exhibition and Education in Astronomy) 天文教育資訊網 2006 年 7 月 3 日
4. ^¹{{cite journal|bibcode=2012MNRAS.423.3268K|arxiv=1204.4115|title=Accurate luminosities from the oxygen λ7771-4 Å triplet and the fundamental parameters of F-G supergiants|journal=Monthly Notices of the Royal Astronomical Society|volume=423|issue=4|pages=3268|author1=Kovtyukh|first1=V. V.|last2=Gorlova|first2=N. I.|last3=Belik|first3=S. I.|year=2012|doi=10.1111/j.1365-2966.2012.21117.x}}
5. ^¹²³⁴{{cite journal|bibcode= 2008PASJ...60..781T|arxiv=0805.2434|title=Stellar Parameters and Elemental Abundances of Late-G Giants|journal=Publications of the Astronomical Society of Japan|volume=60|issue=4|pages=781|author1=Takeda|first1=Yoichi|last2=Sato|first2=Bun'ei|last3=Murata|first3=Daisuke|year=2008|doi=10.1093/pasj/60.4.781}}
6. ^¹²{{cite journal|bibcode=2008A&A...480...91S|title=Vertical distribution of Galactic disk stars. IV. AMR and AVR from clump giants|journal=Astronomy and Astrophysics|volume=480|pages=91|author1=Soubiran|first1=C.|last2=Bienaymé|first2=O.|last3=Mishenina|first3=T. V.|last4=Kovtyukh|first4=V. V.|year=2008|doi=10.1051/0004-6361:20078788|arxiv = 0712.1370 }}
7. ^¹²{{cite web | url=https://www.iau.org/public/themes/naming_stars/ | title=Naming Stars |publisher=IAU.org |accessdate=16 December 2017}}
8. ^¹{{citation | url=https://www.iau.org/science/scientific_bodies/working_groups/280/ | title=IAU Working Group on Star Names (WGSN) | publisher=International Astronomical Union | accessdate=22 May 2016 | postscript=. }}
9. ^¹²{{cite journal | display-authors=1 | last1=van Belle | first1=G. T. | last2=Creech-Eakman | first2=M. J. | last3=Hart | first3=A. | title=Supergiant temperatures and linear radii from near-infrared interferometry | journal=Monthly Notices of the Royal Astronomical Society | date=2009 | volume=394 | issue=4 | pages=1925 | bibcode=2009MNRAS.394.1925V | arxiv=0811.4239 | doi=10.1111/j.1365-2966.2008.14146.x }}
10. ^¹{{cite journal | last1=Anderson | first1=E. | last2=Francis | first2=Ch. | title=XHIP: An extended hipparcos compilation | journal=Astronomy Letters | arxiv=1108.4971 | volume=38 | issue=5 | pages=331 | year=2012 | bibcode=2012AstL...38..331A | doi=10.1134/S1063773712050015 }}
11. ^¹{{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 | volume=389 | issue=2 | pages=869–879 | date=September 2008 | doi=10.1111/j.1365-2966.2008.13596.x | bibcode=2008MNRAS.389..869E | arxiv=0806.2878 }}
12. ^¹{{cite journal | title=Optical counterparts of ROSAT X-ray sources in two selected fields at low vs. high Galactic latitudes | last1=Greiner | first1=J. | last2=Richter | first2=G. A. | journal=Astronomy & Astrophysics | arxiv=1408.5529 | volume=575 | id=A42 | pages=67 | date=March 2015 | doi=10.1051/0004-6361/201322844 | bibcode=2015A&A...575A..42G }}
13. ^¹{{citation | title=Rotation and Lithium Surface Abundances, Revisited | last1=Böhm-Vitense | first1=Erika | journal=The Astronomical Journal | postscript=. | volume=128 | issue=5 | pages=2435−2442 | date=November 2004 | doi=10.1086/425053 | bibcode=2004AJ....128.2435B }}

词条	Alpha Sagittae
释义	Nomenclature References {{Starbox begin \| name = α Sagittae }}{{Starbox image \| image={{Location mark \|image=Sagitta constellation map.svg\|alt=\|float=center\|width=280 \|label=\|position=right \|mark=Red circle.svg\|mark_width=10\|mark_link=α Sge \|x=460\|y=280 }} \|caption=Location of α Sagittae (circled) }}{{Starbox observe \| epoch = J2000.0 \| equinox = J2000.0 (ICRS) \| constell = Sagitta \| ra={{RA\|19\|40\|05.7918540977}}^[1] \| dec={{DEC\|+18\|00\|50.004597761}}^[1] \| appmag_v=+4.39 }}{{Starbox character \| type = bright giant \| class = G1 II \| b-v = {{Val\|0.777\|0.014}}^[5] }}{{Starbox astrometry \| radial_v = 1.72 ± 0.16^[6] \| prop_mo_ra = 14.630 ± 0.257^[1] \| prop_mo_dec = -20.160 ± 0.276^[1] \| parallax =8.5307 \| p_error = 0.1848 \| parallax_footnote = ^[1] \| absmag_v=−0.96^[10] }}{{Starbox detail \| mass = 4.11^[11] \| radius = {{Val\|21\|2}}^[12] \| temperature = 5,333 \| luminosity = 340 \| gravity = 3.11 \| metal_fe = −0.15 \| rotational_velocity = 10^[17] \| age_myr = 151^[11] }}{{Starbox catalog \| names = {{odlist \| name=Sham \| name2=Alsahm \| B=α Sge \| F=5 Sagittae \| BD=+17°4042 \| FK5=1133 \| HD=185758 \| HIP=96757 \| HR=7479 \| SAO=105120 \| GC=27215 \| CCDM=J19401+1801A \| IDS=19356+1747 A \| PPM=136737 \| WDS=J19401+1801A }}^[2] }}{{Starbox reference \| Simbad = 5+Sagittae }}{{Starbox end}}Alpha Sagittae, also named Sham,^[20] is a single^[21] star in the northern constellation of Sagitta. Alpha Sagittae is the Bayer designation, which is latinized from α Sagittae and abbreviated Alpha Sge or α Sge. It is visible to the naked eye as a yellow-hued star with an apparent visual magnitude of +4.39. Despite the name, this is not the brightest star in the constellation – that distinction belongs to Gamma Sagittae. Based upon parallax measurements, Alpha Sagittae is approximately 382 light-years from the Sun. It is moving further away from the Earth with a heliocentric radial velocity of 1.7 km/s.^[6] This is an evolved bright giant with a stellar classification of G1 II. It is 151^[11] million years old with 4^[11] times the mass of the Sun and has expanded to around 21^[12] times the Sun's radius. It is radiating 340 times the Sun's luminosity from its enlarged photosphere at an effective temperature of 5,333 K. There is an X-ray source within {{Val\|12\|ul=arcsecond}} of these coordinates.^[29] Nomenclature This star bore the traditional name Sham (or Alsahm), which derives from the Arabic word سهم sahm, meaning "arrow", the name formerly having been applied to the whole constellation. In 2016, the International Astronomical Union organized a Working Group on Star Names (WGSN)^[30] to catalogue and standardize proper names for stars. The WGSN approved the name Sham for this star on 12 September 2016 and it is now so included in the List of IAU-approved Star Names.^[20] In Chinese, {{lang\|zh\|左旗}} ({{lang\|zh-Latn\|Zuǒ Qí}}), meaning Left Flag, refers to an asterism consisting of Alpha Sagittae, Beta Sagittae, Delta Sagittae, Zeta Sagittae, Gamma Sagittae, 13 Sagittae, 11 Sagittae, 14 Sagittae and Rho Aquilae. Consequently, Alpha Sagittae itself is known as {{lang\|zh\|左旗一}} ({{lang\|zh-Latn\|Zuǒ Qí yī}}, {{lang-en\|the First Star of Left Flag}}).^[3] References 1. ^¹²³⁴{{cite DR2\|1824277055360974720}} 2. ^{{cite simbad \| title=5 Sge \| access-date=2019-03-30 }} 3. ^{{zh icon}} AEEA (Activities of Exhibition and Education in Astronomy) 天文教育資訊網 2006 年 7 月 3 日 4. ^¹{{cite journal\|bibcode=2012MNRAS.423.3268K\|arxiv=1204.4115\|title=Accurate luminosities from the oxygen λ7771-4 Å triplet and the fundamental parameters of F-G supergiants\|journal=Monthly Notices of the Royal Astronomical Society\|volume=423\|issue=4\|pages=3268\|author1=Kovtyukh\|first1=V. V.\|last2=Gorlova\|first2=N. I.\|last3=Belik\|first3=S. I.\|year=2012\|doi=10.1111/j.1365-2966.2012.21117.x}} 5. ^¹²³⁴{{cite journal\|bibcode= 2008PASJ...60..781T\|arxiv=0805.2434\|title=Stellar Parameters and Elemental Abundances of Late-G Giants\|journal=Publications of the Astronomical Society of Japan\|volume=60\|issue=4\|pages=781\|author1=Takeda\|first1=Yoichi\|last2=Sato\|first2=Bun'ei\|last3=Murata\|first3=Daisuke\|year=2008\|doi=10.1093/pasj/60.4.781}} 6. ^¹²{{cite journal\|bibcode=2008A&A...480...91S\|title=Vertical distribution of Galactic disk stars. IV. AMR and AVR from clump giants\|journal=Astronomy and Astrophysics\|volume=480\|pages=91\|author1=Soubiran\|first1=C.\|last2=Bienaymé\|first2=O.\|last3=Mishenina\|first3=T. V.\|last4=Kovtyukh\|first4=V. V.\|year=2008\|doi=10.1051/0004-6361:20078788\|arxiv = 0712.1370 }} 7. ^¹²{{cite web \| url=https://www.iau.org/public/themes/naming_stars/ \| title=Naming Stars \|publisher=IAU.org \|accessdate=16 December 2017}} 8. ^¹{{citation \| url=https://www.iau.org/science/scientific_bodies/working_groups/280/ \| title=IAU Working Group on Star Names (WGSN) \| publisher=International Astronomical Union \| accessdate=22 May 2016 \| postscript=. }} 9. ^¹²{{cite journal \| display-authors=1 \| last1=van Belle \| first1=G. T. \| last2=Creech-Eakman \| first2=M. J. \| last3=Hart \| first3=A. \| title=Supergiant temperatures and linear radii from near-infrared interferometry \| journal=Monthly Notices of the Royal Astronomical Society \| date=2009 \| volume=394 \| issue=4 \| pages=1925 \| bibcode=2009MNRAS.394.1925V \| arxiv=0811.4239 \| doi=10.1111/j.1365-2966.2008.14146.x }} 10. ^¹{{cite journal \| last1=Anderson \| first1=E. \| last2=Francis \| first2=Ch. \| title=XHIP: An extended hipparcos compilation \| journal=Astronomy Letters \| arxiv=1108.4971 \| volume=38 \| issue=5 \| pages=331 \| year=2012 \| bibcode=2012AstL...38..331A \| doi=10.1134/S1063773712050015 }} 11. ^¹{{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 \| volume=389 \| issue=2 \| pages=869–879 \| date=September 2008 \| doi=10.1111/j.1365-2966.2008.13596.x \| bibcode=2008MNRAS.389..869E \| arxiv=0806.2878 }} 12. ^¹{{cite journal \| title=Optical counterparts of ROSAT X-ray sources in two selected fields at low vs. high Galactic latitudes \| last1=Greiner \| first1=J. \| last2=Richter \| first2=G. A. \| journal=Astronomy & Astrophysics \| arxiv=1408.5529 \| volume=575 \| id=A42 \| pages=67 \| date=March 2015 \| doi=10.1051/0004-6361/201322844 \| bibcode=2015A&A...575A..42G }} 13. ^¹{{citation \| title=Rotation and Lithium Surface Abundances, Revisited \| last1=Böhm-Vitense \| first1=Erika \| journal=The Astronomical Journal \| postscript=. \| volume=128 \| issue=5 \| pages=2435−2442 \| date=November 2004 \| doi=10.1086/425053 \| bibcode=2004AJ....128.2435B }} ^[4]^[5]^[6]^[7]^[8]^[9]^[10]^[11]^[12]^[13] }}{{Stars of Sagitta}} 9 : Bayer objects\|Sagitta (constellation)\|G-type bright giants\|Stars with proper names\|Flamsteed objects\|Hipparcos objects\|HR objects\|Henry Draper Catalogue objects\|Durchmusterung objects
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