| 词条 | QV Andromedae |
| 释义 |
| name= QV Andromedae }}{{Starbox observe | epoch=J2000 | ra={{RA|01|16|24.4904}}[1] | dec={{DEC|+48|04|56.00453}}[1] | appmag_v= 6.608 (variable) [3] | constell=Andromeda }}{{Starbox character | class=B9IIIpSi[4] | appmag_1_passband = U | appmag_1 = 6.23[2] | appmag_2_passband = B | appmag_2 = 6.559[3] | appmag_3_passband = V | appmag_3 = 6.608[3] | appmag_4_passband = G | appmag_4 = 6.5628[1] | appmag_5_passband = J | appmag_5 = 6.554[9] | appmag_6_passband = H | appmag_6 = 6.638[9] | appmag_7_passband = K | appmag_7 = 6.657[9] | r-i = | v-r = | b-v = -0.04335[3] | u-b = -0.35[13] | j-h = | j-k = | variable = ACV }}{{Starbox astrometry | radial_v= {{val|-13.6|3}}[14] | prop_mo_ra={{val|9.696|0.121}}[1] | prop_mo_dec={{val|2.699|0.166}}[1] | parallax= 4.4041 | p_error= 0.0914 | parallax_footnote = [1] | absmag_v = | absmag_bol = }}{{Starbox detail | mass = 4.4[18] | radius = | radius_rj = | radius_km = | luminosity = 266.63[19] | luminosity_bolometric = | luminosity_visual = | habitable_inner = | habitable_outer = | gravity = {{val|3.541|0.039}}[18] | temperature = {{val|12,384|150}}[18] | metal = | metal_fe = | rotation = | rotational_velocity = {{val|49|15}}[18] | age = | age_myr = | age_gyr = }}{{Starbox catalog | names=2MASS J01162450+4804561, BD+47 357, FK5 2085, HD 7546, HIP 5939, HR 369, SAO 37067, TYC 3268-835-1 }}{{Starbox reference | Simbad=QV+And }}{{Starbox end}}QV Andromedae (abbreviated to QV And, also known as HR 369 in the Bright Star Catalogue) is an Alpha2 Canum Venaticorum variable in the constellation Andromeda. Its maximum apparent visual magnitude is 6.6, so it can be seen by the naked eye under very favourable conditions. The brightness varies slightly following a periodic cycle of approximately 5.23 days.[4] The stellar classification of this star is B9IIIpSi,[4] where the pSi suffix indicates that the star shows peculiar chemical composition with stronger than usual silicon lines. This type of star is known as an Ap star, with the chemical peculiarities caused by strong magnetic fields and slow rotation leading to chemical stratification in the atmosphere.[13] The star is rotating at a projected rotational velocity of 49 km/s,[18] with up to 0.05 magnitude variation of brightness during one rotation cycle. This leads to the classification of the star as an Alpha2 Canum Venaticorum variable.[4] The variability of QV Andromedae was first identified in 1975, and confirmed from Hipparcos photometry.[29] It was assigned the variable star designation QV Andromedae in the 73rd namelist of variable stars in 1997.[30] References1. ^1 2 3 4 5 {{cite DR2|401569963186136960}} [3][4][5][6][7][8][9][10][11]2. ^{{cite simbad | title=QV And | access-date=October 17, 2018 }} 3. ^1 {{cite journal|bibcode= 1998A&AS..132...93A|doi=10.1051/aas:1998361|title=On the HIPPARCOS photometry of chemically peculiar B, A, and F stars|journal=Astronomy and Astrophysics Supplement Series|volume=132|pages=93–97|last1=Adelman|first1=Saul J.|year=1998}} 4. ^1 {{cite journal|bibcode=1985IBVS.2681....1K|title=The 67th Name-List of Variable Stars|journal=Information Bulletin on Variable Stars|volume=2681|pages=1|last1=Kholopov|first1=P. N.|last2=Samus|first2=N. N.|last3=Kazarovets|first3=E. V.|last4=Perova|first4=N. B.|year=1985}} 5. ^1 2 3 4 QV And, database entry, Combined General Catalog of Variable Stars (GCVS4.2, 2004 Ed.), N. N. Samus, O. V. Durlevich, et al., CDS ID II/250 Accessed on line 2018-10-17. 6. ^1 2 3 4 {{citation | last1=Høg | first1=E. | last2=Fabricius | first2=C. | last3=Makarov | first3=V. V. | last4=Urban | first4=S. | last5=Corbin | first5=T. | last6=Wycoff | first6=G. | last7=Bastian | first7=U. | last8=Schwekendiek | first8=P. | last9=Wicenec | first9=A. | title=The Tycho-2 catalogue of the 2.5 million brightest stars | journal=Astronomy & Astrophysics | volume=355 | pages=L27–L30 | year=2000 | bibcode=2000A&A...355L..27H | postscript=. }} 7. ^1 2 3 {{cite journal |title=VizieR Online Data Catalog: 2MASS All-Sky Catalog of Point Sources (Cutri+ 2003) |journal=CDS/ADC Collection of Electronic Catalogues |pages=II/246 |last1=Cutri |first1=R. M. |last2=Skrutskie |first2=M. F. |last3=Van Dyk |first3=S. |last4=Beichman |first4=C. A. |last5=Carpenter |first5=J. M. |last6=Chester |first6=T. |last7=Cambresy |first7=L. |last8=Evans |first8=T. |last9=Fowler |first9=J. |last10=Gizis |first10=J. |last11=Howard |first11=E. |last12=Huchra |first12=J. |last13=Jarrett |first13=T. |last14=Kopan |first14=E. L. |last15=Kirkpatrick |first15=J. D. |last16=Light |first16=R. M. |last17=Marsh |first17=K. A. |last18=McCallon |first18=H. |last19=Schneider |first19=S. |last20=Stiening |first20=R. |last21=Sykes |first21=M. |last22=Weinberg |first22=M. |last23=Wheaton |first23=W. A. |last24=Wheelock |first24=S. |last25=Zacarias |first25=N. |display-authors=3 |number=2246 |date=June 2003 |bibcode=2003yCat.2246....0C}} 8. ^1 {{citation | last1=de Bruijne | first1=J. H. J. | last2=Eilers | first2=A.-C. | title=Radial velocities for the HIPPARCOS-Gaia Hundred-Thousand-Proper-Motion project | journal=Astronomy & Astrophysics | volume=546 | id=A61 | pages=14 | date=October 2012 | doi=10.1051/0004-6361/201219219 | bibcode=2012A&A...546A..61D | arxiv=1208.3048 | postscript=. }} 9. ^1 2 {{cite journal | title=Catalogue of Ap, HgMn and Am stars | last1=Renson | first1=P. | last2=Manfroid | first2=J.| journal=Astronomy and Astrophysics | volume=498 | issue=3 | pages=961–966 | year=2009 | bibcode=2009A&A...498..961R| doi=10.1051/0004-6361/200810788 }} 10. ^1 {{cite journal | title=Fundamental parameters and infrared excesses of Hipparcos stars | last1=McDonald | first1=I. | last2=Zijlstra | first2=A. A. | last3=Boyer | first3=M. L. | journal=Monthly Notices of the Royal Astronomical Society | volume=427 | issue=1 | pages=343–357 | year=2012 | bibcode=2012MNRAS.427..343M}} 11. ^1 2 3 4 5 {{cite journal | title=A Stellar Rotation Census of B Stars: From ZAMS to TAMS | last1=Huang | first1=W. | last2=Gies | first2=D. R. | last3=McSwain | first3=M. V. | journal=The Astrophysical Journal | volume=722 | issue=1 | pages=605–619 | year=2010 | bibcode=2010ApJ...722..605H}} }}{{Stars of Andromeda}} 8 : Andromeda (constellation)|Henry Draper Catalogue objects|Alpha2 Canum Venaticorum variables|Objects with variable star designations|HR objects|Durchmusterung objects|Hipparcos objects|Ap star |
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