| 词条 | Alpha Scuti |
| 释义 |
| name = α Scuti }}{{Starbox image | image= | caption=Location of α Scuti }}{{Starbox observe | epoch = J2000 | constell = Scutum | ra = {{RA|18|35|12.42776}}[1] | dec = {{DEC|-8|14|38.6529}}[1] | appmag_v = 3.83[2] }}{{Starbox character | class = K3III[3] | b-v = +1.34[2] | u-b = +1.53[2] }}{{Starbox astrometry | radial_v = +36.50[4] | prop_mo_ra = −17.00[1] | prop_mo_dec = −313.52[1] | parallax = 16.38 | p_error = 0.22 | parallax_footnote = [1] | absmag_v = −0.08[5] }}{{Starbox detail | mass = 1.33[6] | radius = 20[6] | temperature = 4,315[7] | luminosity = 186[5] | rotational_velocity = 1.7[8] | gravity = 1.96[6] | metal_fe = −0.04[5] }}{{Starbox catalog | names = α Sct, BD-08°4638, FK5 1482, GC 25385, HD 171443, HIP 91117, HR 6973, LTT 7377, NSV 11056, SAO 142408 }}{{Starbox reference | Simbad = Alpha+Scuti }}{{Starbox end}}Alpha Scuti, Latinized from α Scuti, is an orange-hued star in the southern constellation of Scutum. Originally part of the Aquila constellation, alpha Scuti was a latter designation of 1 Aquilae.[9] It is faintly visible to the naked eye with an apparent visual magnitude of 3.83.[2] Based upon an annual parallax shift of 16.38 mas as seen from the Earth,[1] it is located around 199 light years from the Sun. It is moving away from the Sun with a radial velocity of +36.5 km/s.[4] With a stellar classification of K3 III,[3] the spectrum indicates it is an evolved giant star of type K. Alpha Scuti is a suspected variable star with magnitude range reported as 3.81 to 3.87.[10] The star has an estimated 1.33 times the mass of the Sun, but the outer envelope has expanded to 20 times the Sun's radius.[6] It is radiating 186[5] times the Sun's luminosity from its inflated photosphere at an effective temperature of 4,315 K.[7] References1. ^1 2 3 4 5 {{cite journal | arxiv=0708.1752 | bibcode=2007A&A...474..653V | doi=10.1051/0004-6361:20078357 | title=Validation of the new Hipparcos reduction | journal=Astronomy and Astrophysics | volume=474 | issue=2 | pages=653 | year=2007 | last1=Van Leeuwen | first1=F. }} Vizier catalog entry 2. ^1 2 3 {{cite journal |bibcode=2002yCat.2237....0D |title=VizieR Online Data Catalog: Catalogue of Stellar Photometry in Johnson's 11-color system |journal=CDS/ADC Collection of Electronic Catalogues |volume=2237 |author1=Ducati |first1=J. R. |year=2002 }} 3. ^1 {{cite journal | bibcode=1989ApJS...71..245K | doi=10.1086/191373| title=The Perkins catalog of revised MK types for the cooler stars| journal=The Astrophysical Journal Supplement Series| volume=71| pages=245| year=1989| last1=Keenan| first1=Philip C.| last2=McNeil| first2=Raymond C.}} 4. ^1 {{cite journal | bibcode=2008AJ....135..209M | doi=10.1088/0004-6256/135/1/209 | title=Rotational and Radial Velocities for a Sample of 761 Hipparcos Giants and the Role of Binarity | journal=The Astronomical Journal | volume=135 | pages=209 | year=2008 | last1=Massarotti | first1=Alessandro | last2=Latham | first2=David W. | last3=Stefanik | first3=Robert P. | last4=Fogel | first4=Jeffrey }} 5. ^1 2 3 {{cite journal | bibcode=2012AstL...38..331A | doi=10.1134/S1063773712050015 | arxiv=1108.4971 | title=XHIP: An extended hipparcos compilation | journal=Astronomy Letters | volume=38 | issue=5 | pages=331 | year=2012 | last1=Anderson | first1=E. | last2=Francis | first2=Ch. }} Vizier catalog entry 6. ^1 2 3 {{cite journal | bibcode=1999A&A...352..555A | arxiv=astro-ph/9911002 | title=Fundamental parameters of nearby stars from the comparison with evolutionary calculations: Masses, radii and effective temperatures | journal=Astronomy and Astrophysics | volume=352 | pages=555 | author1=Allende Prieto | first1=C. | last2=Lambert | first2=D. L. | year=1999 }} Vizier catalog entry 7. ^1 {{cite journal | arxiv=1102.4832 | bibcode=2011MNRAS.414..418P | doi=10.1111/j.1365-2966.2011.18421.x | title=The basal chromospheric Mg ii h+k flux of evolved stars: Probing the energy dissipation of giant chromospheres | journal=Monthly Notices of the Royal Astronomical Society | volume=414 | pages=418 | year=2011 | last1=Martínez | first1=M. Isabel Pérez | last2=Schröder | first2=K.-P. | last3=Cuntz | first3=M. }} Vizier catalog entry 8. ^{{cite journal | bibcode=2014A&A...561A.126D | doi=10.1051/0004-6361/201220762 | arxiv=1312.3474 | title=A catalog of rotational and radial velocities for evolved stars | journal=Astronomy & Astrophysics | volume=561 | pages=A126 | year=2014 | 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. }} Vizier catalog entry 9. ^{{cite journal | last=Wagman | first=M. | title=Flamsteed's Missing Stars | journal=Journal for the History of Astronomy | volume=18 | number=3 | page=212 |date=August 1987 | bibcode=1987JHA....18..209W | doi=10.1177/002182868701800305}} 10. ^{{cite journal | bibcode=2009yCat....1.2025S |title=VizieR Online Data Catalog: General Catalogue of Variable Stars (Samus+ 2007-2013)|journal=VizieR On-line Data Catalog: B/gcvs. Originally published in: 2009yCat....102025S|volume=1|display-authors=etal|author1=Samus|first1=N. N.|last2=Durlevich|first2=O. V.|year=2009}} External links
| first=James B. | last=Kaler | date=April 29, 2011 | title=Alpha Scuti | work=STARS | publisher=University of Illinois | url=http://stars.astro.illinois.edu/sow/alphasct.html | accessdate=2017-11-09 | postscript=. }}{{Stars of Scutum}} 8 : Suspected variables|K-type giants|Scutum (constellation)|Bayer objects|Durchmusterung objects|Henry Draper Catalogue objects|Hipparcos objects|HR objects |
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