Continuum spectrum of the star Θ1 Ori C

Published photoelectric measurements over a wide wavelength range (0.36–18 µm) are used to study the continuum spectrum of the star Θ¹ Ori C. The model that assumes the following three radiation sources is consistent with observations: (1) a zero-age main-sequence O7 star (object 1) of mass M ₁=20M _⊙, radius R ₁=7.4R _⊙, effective temperature T ₂=37 000 K, and absolute bolometric magnitude $M\mathop {bol}\limits^1 = - 7\mathop .\limits^m 7$ ; (2) object 2 with M ₂=15M _⊙, R ₂=16.2R _⊙, T ₂=4000 K, and $M\mathop {bol}\limits^2 = - 5\mathop .\limits^m 1$ ; and (3) object 3 with R ₃10 700 R _⊙, T ₃=190 K, and $M\mathop {bol}\limits^3 = - 0\mathop .\limits^m 6$ . The visual absorption toward the system is $A_V = 0\mathop .\limits^m 95$ and obeys a normal law. The nature of objects 2 and 3 has not been elucidated. It can only be assumed that object 2 is a companion of the primary star, its spectral type is K7, and it is in the stage of gravitational contraction. Object 3 can be a cocoon star and a member of the system, but can also be a dust envelope surrounding the system as a whole.     

一路追寻——C/2009 R1麦克诺特

灿烂的星空,既有相对恒定不动的恒星,时而顺行、时而逆行的行星,美丽的星云、星团、星系,一闪而过的流星,当然,还有那拖着长长的尾巴、被古人视作不祥之兆的“扫把星”——彗星。     

C.GPS时间测量值(续1)

UTC(NTSC)一GPS Tl侧王2(X)3年3月 日MID【08UTPRN丁13UTPRNPRN 14DS UTPRN 18朋Ilr【20Ul,PRNPRN23nst刀, 1 526992 527加 3 527014 527025 527036 527047 527058 527069 527价10 52708 9(0以犯)一3(0158) 1(0154)一1(0150) 0(0146)9(16刀)9(1614)12(1610)9(1以拓)1(1706)3(1702)1(1658)0(1654)13(0410)一10(1550)12(汉伪)一1(以似)9(1542)3(0358)一4(1538)10(0354)9(15洲)一4(0142) 7(0138) 0(0134)一2(0130) 9(0126)12(1印2)1(16印)9(1558)2(1翻6)12(1554)5(1翻2)13(1550)5(1638)15(1546)11(1634)9(0350)11(0洲6)7(0努…     

C.GPS时间测量值(续1)

UTC(CSAO)一GPS TIME2(X)1年5月 日加习DPRNS朋UrPRN 10仍U’TPRN 11ns UrPRN1均【13Ul,PRN 17DsU’rPRN 19.t了r5203052031520325203352034一64(2330)一65(2326)一68(2322)一72(2318)一77(2314)一65(114《5)一59(1142)一68(1138)一95(1134)一87(113《))一69(0302)一67(似58)一64(优巧4)一74(似50)一93(0对6)一60(0526)一52(0522)一66(0518)一71(0514)一81(0510)一68(13()6)一44(1302)一75(1258)一69(1254)一81(1250)一47(2106)一93(2102)一73(2058)一68(2054)一59(加加)‘且2内J月,咤︺5203552036520375203852039一75(23…     

C.GPS时间测量值(续1)

2005年11月PRN11PRN13PRN14PRN15PRN16PRN18日MJD nsUT nsUT nsUT nsUT nsUT nsUT153675-26(0654)-26(1302)-20(2146)-28(2058)-32(0534)-26(1806)253676-24(0650)-29(1258)-24(2142)-28(2054)-34(0530)-24(1802)353677-20(0646)-28(1254)-22(2138)-20(2050)--24(1758)453678-27(0642)-26(1250)-23(2134)-24(2046)-33(0522)-26(1754)553679-27(0638)-27(1246)-24(2130)-20(2042)-32(0518)-25(1750)653680-35(0634)-28(1242)-24(2126)-29(2038)-35(0514)-25(1746)753681-34(0630)-28(1238)-24(2122)-26(2034)-36(0510)-24(1742…     

C.GPS时间测量值(续1)

UrC(NTSC)一GPS TIM玉20()3年1月 日如灯D 15入讨0 25公抖1 3 52642 45公抖3 55么到阵【08UTPRNPRN 13ns Uq、PRN 14ns UrPRN 18nsU叮PRN20ns UT一22(0 558)一15(0554)一24(0550)一9(0546)一13(0542)一14(1342)一13(1338)一18(1334)一12(1330)一14(1326)、.声、、声、.产、、,尹、、.户46 4238从3007 0707叮07乙.7︵X︶月崎4--1一.1678910526455公抖65刀讲75么讲852649一7(0538)一10(0534)一1(0530) 2(0526)一5(0522)一7(1322)一9(1318)一7(1314)一3(1310)一11(1306)一14(2010)一12(2006)一16(20(犯)一9(1958) 1(1954) 5(195…     

C.GPS时间测量值(续1)

2加3年2月 日加刀DFRN【08UrUTC(N卫犯)一GPSTIME 班以13 PRN 14班以18 朋Ur netTI,ne工厅【20Ul,班困PRN23DB Ur15场712 526刀3 526734戈场745 526750(0354)0(03匀)1(0洲6)一11(1138) 3(1134)0(1814)5(1810)一7(1以众) 1(1858)一2(侧刃2) 1(0558)一6(仍54)一5(1742)11(1738)一7(1126)一11(11龙) 0(1即2)一1(1758)一6(18匆)一4(1846)一8(1730)一8(r几6)52676526刀526785267952680一4(03抖) 4(0330)一2(0326)一8(0寻刀) 5(0318)一16(1118)一11(1114)一2()(1110)一22(1106)一21(1102) 4(1754)一6(1842)一2(0匆2) 2(17匀)一5(1838)…     

C.GPS时间测量值(续1)

UTC(CSAO)一GPS TIME1997年12月 日MJDPRN 10户5 UTPR勺14拜5 UTPRN 15拼sUTPRN 16拼5 IJTPRN 18拌5 UTPRN 22拼5 UT078307840785078607870.402(0018)0.377(1518) 一0.386(1514)0 .465(0010)一0。370(1938)0.383(1838)0 .403(0618)0 .396(0610)一一一一一116‘勺」月任口匀07880789O79G079107920 .4 14(2354)一-一0 .397(2350)0.394(1458)0.401(1354)0 .298(2346)0.346(1454)一0 .4 15(.2338)0 .441(1922)0.277(1822)0.426(0554)0 .423(1918)0.321(1818)一 一一0.401(0546)0.312(1911)0.355(1810)一叹U行I000︺n︸ ,t…     

C.GPS时间测量值(续1)

UTC(CSAO)一GPS TIME1994年8月 日MJDPRN 17拜5 UTPRN 18“5 UTPRN 19拼5 UTPRN 20拌5 UTPRNZI料5 UTPRN 22娜UT95659566956795689569 一0.436(2206)0.273(2254)0 .398(1054)0.428(2202)0.350(2250)0.453(1050)0.386(2158)0.291(2246)0.324(1046)0.262(2154)0.352(2242)0.347(1042)0.275(2150)0.368(2238)0 .356(1514)0.339(1410)一 一一0,321(2306)0 .369(1506)0.330(1402)0.433(2302)0.339(1502)0.372(1358)0.394(2258)0 .375(1458)0.357(1354)一一一一一一957095719572957395740 .299(1038)0.0 .376(1034)0.0 .319(1…     

C.GPS时间测量值(续1)

UTC(CSAO)一GPS TIME1997年9月 日MJDPRN 09娜UTPRN 10娜UTPRN 14娜UTPRN 15娜UTPRN 17娜UTPRN 18娜UT069206930694069506960.435(1054)0.329(0714)0.367(2302)0.419(2246)0.375(1051)0。402(0710)0.364(2258)0.418(2242)0.378(1046)一0.401(2254)0.414(2238)0.412(1042)0.399(0702)0.454(2250)0.416(2234)0.348(1038)一0.417(2246)0.411( 2230)0.384(1628),上O自OJ0.354(2358)0.332(2354)0.363(2350)0。386(2346)0.387(2342)06970698069907000701 一0.374(0654)0.492(2242)0.408(2226)0.292(1032)0.355(0650)0.436(223…     

C.GPS时间测量值(续1)

UTC(CSAO)一GPS TIME2001 日年9月入灯DPRNSUTPRNI()nsU’:『PRN 11ns UrPRN 13丈巧U飞,PRN 17ns Ul,PRN 刀日19U521535215452155521565215755(1518)65(1514)55(1510)50(1506)63(1502)52(0331)94(0弘尸)48(0322)36(0318)45(2110)45(2106)52(2102)48(2058)43(2054)1254)1250)1246)1公址123切33 53 4D 5859,几2内、︸4‘J52158521595216052161521石252(1458)55(1454)58(1450)56(1446)63(1442)42(2050)46(2046)53(2042)54(2038)54(2034)56(12努)52(1230)42(1227)44(1222)54(1218)521635216452165521665216763(1438)54(14抖)7…     

C.GPS时间测量值(续1)

UTC(CSAO)一GPS TIME1998年6月 日MJDPRN 09拌5 UTPRN 14拌5 UTPRN 15拌5 UTPRN 16拌5 UTPRN 18料5 UTPRN 22拌5 UT096509660967096809690。435(1603)0.0.576(1559)0.0 .491(1555)0.470(1551)0.509(0226)491(0220)520(0214)0.425(0406)0.390(0702)0.444(0742)0.408(1758)0.425(     

C.GPS 时间测量值(续1)

UTC(仪达0)一GPS TIME1999年6月 日.h灯DPRNPRN件【09甘rPRN 13户UT件f 141了rPRN 15禅甘rPRN 16脾UrPRN17牌甘r133()13311332133313340 .680(1106)0.718(肠盆)0.6灯(01匀)0.675(23(巧)0.,耸(似38)0.717(1034)0 .699(1102)0.刀O(0618)0.6别(0146)0.665(2302)0.砧3(似洲)0.663(1030)0 .7肠(1058)0.印9(0614)0.736(0142)0.664(Z巧9)0.几9(似知)0.价0(1《场)0 .702(1054)0.创礴(06t0)0.626(0138)0.663(公巧5)0.幻8(似肠)0.“1(1优论)0 .728(1050)0,624(0606)0.659(01洲)0,672(2250)0.幻9(似刀)0.650(1018)‘且‘2傀公45133513361…     

C.GPS时间测量值(续1)

UTC(CSAO)一GPS TIME1995年3月 日MJDPRN 17料5 UTPRN 18户5 UTPRN 19拌5 UTPRN 20邵UTPRN21拌5 UTPRN 22料5 UT977797789779978097810.416(2034)0.356(0750)0.412(0838)0.351(0350)0.536(2030)0.434(0746)0.391(0834)0.316(0346)0.477(2026)0.364(0742)0.405(0830)0.355(0342)0.522(2022)0.337(0738)0.430(0826)0.328(0338)0 .558(2018)0.420(0734)0.449(0822)0.403(0334)0。455(2346),上口乙0.558(2338)0.450(2334)0.461(2330)0。334(0854)0。402(0850)0.396(0846)0.395(0842)0.401(0838)978297839784978597860 .492(2…     

C.GPS时间测量值(续1)

UTC(CSAO)一GPS TIME1996年4月 日MJDPRN 16拌5 UTPRN 17拌5 UTPRN 18拌5 UTPRN 19拌5 UTPRN 21科5 UTPRN 22娜UT017401750176017701780。225(1514)0.265(1738)0.398(0434)0.345(0554)0.315(2046)0.251(0034)0.226(1510)0。299(1734)0.336(0430)0.281(0550)0.280(2042)0。287(0030)0.264(1506)0.252(1730)0.377(0426)0.275(0546)0.370(2038)0.287(0026)0.267(1502)0.302(1726)0.364(0422)0.341(0542)0.308(2034)0.363(0022)0.253(1458)0.340(1722)0.343(0418)0.328(0538)0.311(2030)0.397(0018),孟O‘内」0179018001810…     

C.GPS时间测量值(续1)

UTC(CSAO)一GPS TIME1994年7月 日MJDPRN 17声UTPRN 18卢UTPRN 19卢UTPRN 20声UTPRN21娜UTPRN 22件UT953495359536953795380。237(1302)0.289(0014)0.294(0102)0。276(1718)0。392(1614)0。293(0118)0。333(1258)0.294(0010)0.355(0058)O。253(1714)0.265(1610)0.336(0114)0.289(1254)0.298(0006)0.355(0054)0。302(1710)0.297(1606)0.357(0110)0.361(1250)0.283(0002)0.308(0050)0.295(1706)0.328(1602)0.331(0106)0.280(1246)0.342(2354)0.338(0046)0.299(1702)0.371(1558)0.355(0102)953995心09541954295430.261(124…     

C.GPS时间测量值(续1)

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C.GPS 时间测量值(续1)

UTC(CSAO)一GPS TIME1998年7月 日MJDPRN 14拼5 UTPRN 15尸5 UTPRN 16拜5 UTPRN 18尸5 UTPRN 22拜、UT099509960997099809990.459(1403)0.499(0026)0.530(0206)0.516(0502)0.548(0542)0.527(1558)0.545(1358)0.511(0023)0.522(0202)0.611(0459)0.520(0538)0.601(1554)0.553(135     

C.GPS时间测量值(续1)

UTC(CSAO)一GPS TIME1998年5月 日MJDPRN 09邵UTPRN 14娜UTPRN 15料5 UTPRN 16拌5 UTPRN 18娜UTPRN 22那UT093409350936093709380.43尽(1806)一0.408(0610)0.439(0906)0.470(0950)0.492(1958)0.424(1802)o,41,(0430)0.399(0606)0.455(0902)o·428(0946)0.431(1954)0.430(1758)0