| 词条 | MY Camelopardalis |
| 释义 |
| name = MY Camelopardalis }}{{Starbox observe | epoch = J2000.0 | constell = Camelopardalis | ra = {{RA|03|59|18.2863}}[1] | dec = {{DEC|+57|14|13.673}}[1] | appmag_v = 9.80 - 10.15[2] }}{{Starbox character | class = O6nn[4] {{nowrap|(O6V((f)) + O6V((f))[3])}} | b-v = +0.28[4] | u-b = −0.66[4] | variable = Ellipsoidal[2] }}{{Starbox astrometry | radial_v = −47[4] | prop_mo_ra = −2.3[5] | prop_mo_dec = −0.3[5] | parallax = | p_error = | parallax_footnote = | dist_ly = | dist_pc = ~4,000[4] | absmag_v = −4.1[6] | absmag_bol ={{Starbox orbit | reference = [4] | primary = | name = | period = | period_unitless = 1.175 days | axis = | axis_unitless = {{solar radius|19.24}} | eccentricity = 0 | inclination = 62.59 | node = | periastron = | periarg = 90 | periarg_primary = 270 | k1 = 335 | k2 = 400 }}{{Starbox detail | source=[4] | component1 = A | mass = 37.7 | radius = 7.60 | luminosity = | gravity = 4.251 | temperature = 42,000 ± 1,500 | metal = | metal_fe = | rotation = | rotational_velocity = 290 | age_myr = | component2 = B | mass2 = 31.6 | radius2 = 7.01 | luminosity2 = | gravity2 = 4.245 | temperature2 = 39,000 ± 1,500 | metal2 = | metal_fe2 = | rotation2 = | rotational_velocity2 = 268 | age_myr2 = }}{{Starbox catalog | names = MY Camelopardalis, BD+56°864, Alicante 1 NM 693, 2MASS J03591829+5714137 | component1 = | names1 = | component2 = | names2 = }}{{Starbox reference | Simbad = MY+Cam }}{{starbox end}}MY Camelopardalis (MY Cam) is a binary star system located in the Alicante 1 open cluster, some {{convert|13|kly|kpc|abbr=on|lk=on}} away in the constellation Camelopardalis. It is one of the most massive known binary star systems and a leading candidate for a massive star merger. MY Cam is the brightest star in Alicante 1.[4] The system consists of two hot blue O-type stars with one component having a mass of 32 solar masses and the other 38 solar masses. MY Cam is a contact binary and eclipsing binary, with an orbital period of 1.2 days, and an orbital velocity of {{convert|1000000|kph|mph|abbr=on}}.[4] References1. ^1 {{cite journal|bibcode=1998A&A...335L..65H|title=The TYCHO Reference Catalogue|journal=Astronomy and Astrophysics|volume=335|pages=L65|author1=Hog|first1=E.|last2=Kuzmin|first2=A.|last3=Bastian|first3=U.|last4=Fabricius|first4=C.|last5=Kuimov|first5=K.|last6=Lindegren|first6=L.|last7=Makarov|first7=V. V.|last8=Roeser|first8=S.|year=1998}} {{Stars of Camelopardalis}}2. ^1 {{cite journal|bibcode= 2008IBVS.5863....1K|title= The 79th Name-List of Variable Stars|journal= Information Bulletin on Variable Stars|volume= 5863|pages= 1|author1= Kazarovets|first1= E. V.|last2= Samus|first2= N. N.|last3= Durlevich|first3= O. V.|last4= Kireeva|first4= N. N.|last5= Pastukhova|first5= E. N.|year= 2008}} 3. ^{{cite journal|bibcode=2004IBVS.5517....1G|title=NSV 15852 is likely an Elliptical Variable akin in type to AO Cas|journal=Information Bulletin on Variable Stars|volume=5517|pages=1|author1=Greaves|first1=John|last2=Wils|first2=Patrick|year=2004}} 4. ^1 2 3 4 5 {{cite journal|doi=10.1051/0004-6361/201424345|arxiv=1410.5575v1|title=MY Camelopardalis, a very massive merger progenitor|journal=Astronomy & Astrophysics|volume=572|pages=A110|year=2014|last1=Lorenzo|first1=J.|last2=Negueruela|first2=I.|last3=Val Baker|first3=A. K. F.|last4=García|first4=M.|last5=Simón-Díaz|first5=S.|last6=Pastor|first6=P.|last7=Méndez Majuelos|first7=M.|bibcode=2014A&A...572A.110L}} 5. ^1 {{cite journal|bibcode=2000A&A...355L..27H|title=The Tycho-2 catalogue of the 2.5 million brightest stars|journal=Astronomy and Astrophysics|volume=355|pages=L27|author1=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.|year=2000|doi=10.1888/0333750888/2862}} 6. ^1 2 3 {{cite journal|bibcode=1970A&AS....1...35H|title=UBV Observations of luminous stars in three Milky Way fields (Cassiopeia, Camelopardalis and Gemini)|journal=Astronomy & Astrophysics Supplement Series |volume=1|pages=35|author1=Haug|first1=U.|year=1970}} 8 : Camelopardalis (constellation)|Common envelope binary stars|Eclipsing binaries|O-type main-sequence stars|Objects with variable star designations|2MASS objects|Emission-line stars|Durchmusterung objects |
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