“QX Andromedae”的意思、由来-开放百科全书

As a whole, the QX Andromedae system emits light like a stellar blackbody, with a F6 spectral type. The two stars in the system complete an orbit every 9.892 hours; they are so close that their envelopes are touching each other. Their temperature is similar, but they have different radius and mass.^[16] Since they belong to an open cluster, the age of this system is equal to the cluster estimated age ({{val|1.34|0.06}} billion years).^[18]

Variability

The light curve of QX Andromedae shows almost equal eclipses; the primary eclipse occurs when the less massive star pass in front of the other one. The brightness variations are rather small for this system given the low orbital inclination of 55°.^[16]

References

1. ^¹²³⁴⁵{{cite DR2|342870640854339200}}
2. ^¹²{{cite journal | bibcode=2007A&A...467..785N | title=New periodic variable stars coincident with ROSAT sources discovered using SuperWASP | journal=Astronomy and Astrophysics | volume=467 | issue=2 | pages=785 | last1=Norton | first1=A. J. | last2=Wheatley | first2=P. J. | last3=West | first3=R. G. | last4=Haswell | first4=C. A. | last5=Street | first5=R. A. | last6=Collier Cameron | first6=A. | last7=Christian | first7=D. J. | last8=Clarkson | first8=W. I. | last9=Enoch | first9=B. | last10=Gallaway | first10=M. | last11=Hellier | first11=C. | last12=Horne | first12=K. | last13=Irwin | first13=J. | last14=Kane | first14=S. R. | last15=Lister | first15=T. A. | last16=Nicholas | first16=J. P. | last17=Parley | first17=N. | last18=Pollacco | first18=D. | last19=Ryans | first19=R. | last20=Skillen | first20=I. | last21=Wilson | first21=D. M. | year=2007 | doi=10.1051/0004-6361:20077084 | arxiv=astro-ph/0702631 }}
3. ^¹²³{{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}}
4. ^¹{{cite journal | bibcode=2005MNRAS.357..497B | title=Kinematics of W Ursae Majoris type binaries and evidence of the two types of formation | journal=Monthly Notices of the Royal Astronomical Society | volume=357 | issue=2 | pages=497–517 | last1=Bilir | first1=S. | last2=Karataș | first2=Y. | last3=Demircan | first3=O. | last4=Eker | first4=Z. | year=2005 | doi=10.1111/j.1365-2966.2005.08609.x}}
5. ^¹²³⁴{{cite journal | bibcode=2011A&A...525A..66D| title=Physical parameters of close binaries QX Andromedae, RW Comae Berenices, MR Delphini, and BD +079° 3142| journal=Astronomy and Astrophysics| volume=525| pages=A66| last1=Djurašević| first1=G.| last2=Yılmaz| first2=M.| last3=Baștürk| first3=Ö.| last4=Kılıçoğlu| first4=T.| last5=Latković| first5=O.| last6=Çalıșkan| first6=Ş.| last7=Christian| first7=D. J.| last8=Enoch| first8=B.| last9=Gallaway| first9=M.| last10=Hellier| first10=C.| last11=Horne| first11=K.| last12=Irwin| first12=J.| last13=Kane| first13=S. R.| last14=Lister| first14=T. A.| last15=Nicholas| first15=J. P.| last16=Parley| first16=N.| last17=Pollacco| first17=D.| last18=Ryans| first18=R.| last19=Skillen| first19=I.| last20=Wilson| first20=D. M.| year=2011| arxiv=1011.3677| doi=10.1051/0004-6361/201014895}}
6. ^¹²³⁴{{cite journal |title=A New Look at an Old Cluster: The Membership, Rotation, and Magnetic Activity of Low-mass Stars in the 1.3 Gyr Old Open Cluster NGC 752 |journal=The Astrophysical Journal | last1=Agüeros |first1=M. A. | last2= Bowsher |first2=E. C. |last3=Bochanski |first3=J. J. |last4=Cargile |first4=P. A. |last5=Covey |first5=K. R. |last6=Douglas |first6=S. T. |last7=Kraus |first7=A. |last8=Kundert |first8=A. |last9=Law |first9=N. M. |last10=Ahmadi |first10=A. |last11=Arce |first11=H. G. |volume=862 |issue=1 |pages=33 |date=July 2018 |bibcode=2018ApJ...862...33A|doi=10.3847/1538-4357/aac6ed |arxiv=1804.02016 }}
7. ^¹{{cite journal |title=Soft X-rays from the intermediate-age open cluster NGC 752 |journal=Astronomy and Astrophysics | last1=Belloni |first1=T. | last2=Verbunt |first2=F. |volume=305 |pages=806 |date=January 1996 |bibcode=1996A&A...305..806B}}

词条	QX Andromedae
释义	System Variability References {{Starbox begin}}{{Starbox image \| image={{Location mark \|image=NGC752-Tayson.jpg\|alt=\|float=center\|width=320 \|label=\|position=right \|mark=Red circle.svg\|mark_width=10\|mark_link=QX Andromedae \|x=446\|y=320 }} \|caption=Location of QX Andromedae (circled) in NGC 752 }}{{Starbox observe \| epoch=J2000 \| ra={{RA\|01\|57\|57.7818}}^[1] \| dec={{DEC\|+37\|48\|22.4500}}^[1] \| appmag_v= 11.28 – 11.5 variable \| constell=Andromeda }}{{Starbox character \| class=F6 \| appmag_1_passband = B \| appmag_1 = 11.77^[5] \| appmag_2_passband = R \| appmag_2 = 11.23^[5] \| appmag_3_passband = G \| appmag_3 = 11.2929^[1] \| appmag_4_passband = J \| appmag_4 = 10.393^[8] \| appmag_5_passband = H \| appmag_5 = 10.225^[8] \| appmag_6_passband = K \| appmag_6 = 10.163^[8] \| r-i = \| v-r = \| b-v = \| u-b = \| j-h = \| j-k = \| variable = W UMa }}{{Starbox astrometry \| radial_v= {{val\|11.70\|0.27}}^[12] \| prop_mo_ra={{val\|10.016\|1.295}} ^[1] \| prop_mo_dec={{val\|-11.926\|0.281}}^[1] \| parallax= 2.2376 \| p_error= 0.0676 \| parallax_footnote = ^[1] \| dist_ly = \| dist_pc = \| absmag_v = \| absmag_bol = }}{{Starbox orbit \| reference = ^[16] \| primary = \| name = \| period = \| period_unitless = 0.4121716 days \| axis = \| axis_unitless = {{val\|2.89\|0.04}} {{solar mass}} \| eccentricity = \| inclination = {{val\|54.6\|0.2}} \| node = \| periastron = \| periarg = \| periarg_primary = \| k1 = \| k2 = }}{{Starbox detail \| source = ^[16] \| component1 = Primary \| mass = {{val\|1.47\|0.05}} \| mass_mj = \| radius = {{val\|1.46\|0.02}} \| radius_rj = \| radius_km = \| luminosity = \| luminosity_bolometric = \| luminosity_visual = \| habitable_inner = \| habitable_outer = \| gravity = {{val\|4.27\|0.03}} \| temperature = 6,440 \| metal = \| metal_fe = \| rotation = \| rotational_velocity = \| age = \| age_myr = \| age_gyr = {{val\|1.34\|0.06}}^[18] \| component2 = Secondary \| mass2 = {{val\|0.45\|0.02}} \| mass_mj2 = \| radius2 = {{val\|0.88\|0.02}} \| radius_rj2 = \| radius_km2 = \| luminosity2 = \| luminosity_bolometric2 = \| luminosity_visual2 = \| habitable_inner2 = \| habitable_outer2 = \| gravity2 = {{val\|4.20\|0.03}} \| temperature2 = {{val\|6,420\|20}} \| metal2 = \| metal2_fe = \| rotation2 = \| rotational_velocity2 = \| age2 = \| age_myr2 = \| age_gyr2 = {{val\|1.34\|0.06}}^[18] }}{{Starbox catalog \| names=2MASS J01575777+3748224, RX J015758.0+374820, TYC 2816-1950-1 }}{{Starbox reference \| }}{{Starbox end}}QX Andromedae (often abbreviated to QX And) is an eclipsing binary in the constellation Andromeda. It varies from a maximum apparent visual magnitude of 11.28 to a minimum of 11.50. Since it's impossible to specify the onset time of the eclipses, it's classified as a W Ursae Majoris variable star. It's also observed as an X-ray source^[21] and is a member of the open cluster NGC 752.^[18] System As a whole, the QX Andromedae system emits light like a stellar blackbody, with a F6 spectral type. The two stars in the system complete an orbit every 9.892 hours; they are so close that their envelopes are touching each other. Their temperature is similar, but they have different radius and mass.^[16] Since they belong to an open cluster, the age of this system is equal to the cluster estimated age ({{val\|1.34\|0.06}} billion years).^[18] Variability The light curve of QX Andromedae shows almost equal eclipses; the primary eclipse occurs when the less massive star pass in front of the other one. The brightness variations are rather small for this system given the low orbital inclination of 55°.^[16] References 1. ^¹²³⁴⁵{{cite DR2\|342870640854339200}} 2. ^¹²{{cite journal \| bibcode=2007A&A...467..785N \| title=New periodic variable stars coincident with ROSAT sources discovered using SuperWASP \| journal=Astronomy and Astrophysics \| volume=467 \| issue=2 \| pages=785 \| last1=Norton \| first1=A. J. \| last2=Wheatley \| first2=P. J. \| last3=West \| first3=R. G. \| last4=Haswell \| first4=C. A. \| last5=Street \| first5=R. A. \| last6=Collier Cameron \| first6=A. \| last7=Christian \| first7=D. J. \| last8=Clarkson \| first8=W. I. \| last9=Enoch \| first9=B. \| last10=Gallaway \| first10=M. \| last11=Hellier \| first11=C. \| last12=Horne \| first12=K. \| last13=Irwin \| first13=J. \| last14=Kane \| first14=S. R. \| last15=Lister \| first15=T. A. \| last16=Nicholas \| first16=J. P. \| last17=Parley \| first17=N. \| last18=Pollacco \| first18=D. \| last19=Ryans \| first19=R. \| last20=Skillen \| first20=I. \| last21=Wilson \| first21=D. M. \| year=2007 \| doi=10.1051/0004-6361:20077084 \| arxiv=astro-ph/0702631 }} 3. ^¹²³{{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}} 4. ^¹{{cite journal \| bibcode=2005MNRAS.357..497B \| title=Kinematics of W Ursae Majoris type binaries and evidence of the two types of formation \| journal=Monthly Notices of the Royal Astronomical Society \| volume=357 \| issue=2 \| pages=497–517 \| last1=Bilir \| first1=S. \| last2=Karataș \| first2=Y. \| last3=Demircan \| first3=O. \| last4=Eker \| first4=Z. \| year=2005 \| doi=10.1111/j.1365-2966.2005.08609.x}} 5. ^¹²³⁴{{cite journal \| bibcode=2011A&A...525A..66D\| title=Physical parameters of close binaries QX Andromedae, RW Comae Berenices, MR Delphini, and BD +079° 3142\| journal=Astronomy and Astrophysics\| volume=525\| pages=A66\| last1=Djurašević\| first1=G.\| last2=Yılmaz\| first2=M.\| last3=Baștürk\| first3=Ö.\| last4=Kılıçoğlu\| first4=T.\| last5=Latković\| first5=O.\| last6=Çalıșkan\| first6=Ş.\| last7=Christian\| first7=D. J.\| last8=Enoch\| first8=B.\| last9=Gallaway\| first9=M.\| last10=Hellier\| first10=C.\| last11=Horne\| first11=K.\| last12=Irwin\| first12=J.\| last13=Kane\| first13=S. R.\| last14=Lister\| first14=T. A.\| last15=Nicholas\| first15=J. P.\| last16=Parley\| first16=N.\| last17=Pollacco\| first17=D.\| last18=Ryans\| first18=R.\| last19=Skillen\| first19=I.\| last20=Wilson\| first20=D. M.\| year=2011\| arxiv=1011.3677\| doi=10.1051/0004-6361/201014895}} 6. ^¹²³⁴{{cite journal \|title=A New Look at an Old Cluster: The Membership, Rotation, and Magnetic Activity of Low-mass Stars in the 1.3 Gyr Old Open Cluster NGC 752 \|journal=The Astrophysical Journal \| last1=Agüeros \|first1=M. A. \| last2= Bowsher \|first2=E. C. \|last3=Bochanski \|first3=J. J. \|last4=Cargile \|first4=P. A. \|last5=Covey \|first5=K. R. \|last6=Douglas \|first6=S. T. \|last7=Kraus \|first7=A. \|last8=Kundert \|first8=A. \|last9=Law \|first9=N. M. \|last10=Ahmadi \|first10=A. \|last11=Arce \|first11=H. G. \|volume=862 \|issue=1 \|pages=33 \|date=July 2018 \|bibcode=2018ApJ...862...33A\|doi=10.3847/1538-4357/aac6ed \|arxiv=1804.02016 }} 7. ^¹{{cite journal \|title=Soft X-rays from the intermediate-age open cluster NGC 752 \|journal=Astronomy and Astrophysics \| last1=Belloni \|first1=T. \| last2=Verbunt \|first2=F. \|volume=305 \|pages=806 \|date=January 1996 \|bibcode=1996A&A...305..806B}} ^[2]^[3]^[4]^[5]^[6]^[7] }}{{Stars of Andromeda}} 5 : Andromeda (constellation)\|Objects with variable star designations\|2MASS objects\|W Ursae Majoris variables\|Eclipsing binaries
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System

Variability

References