4U 1700-37

4U 1700-37 is one of the stronger binary X-ray sources in the sky. It was discovered by the Uhuru satellite.^[1] The "4U" designation refers to the Fourth (and final) Uhuru catalog. It is associated with a bright (6.53 V magnitude) supergiant Of star HD 153919, which is orbited by an accreting compact object that must be either a neutron star or a black hole. The X-ray source is eclipsed by the star every ~3.4 days, but no pulsations have yet been observed. The source is one of the ten brightest persistent X-ray sources in the 10-100 keV hard X-ray energy region.

References

↑ Jones, C., Forman, W., Tananbaum, H., et al. 1973, ApJ, 181, L43

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Stars of Scorpius

Bayer	α (Antares) β (Graffias) δ (Dschubba) ε ζ¹ ζ² η θ (Sargas) ι¹ ι² κ (Girtab) λ (Shaula) μ¹ (Denebakrab) μ² ν (Jabbah) ξ ο π ρ σ (Al Niyat) τ (Alniyat) υ (Lesath) χ ψ ω¹ ω² G (γ Tel) H (β Nor) N (α Nor) Q

Flamsteed	1 2 3 4 11 12 13 16 18 22 25 27

Variable	T U RR RS RV RY RZ AH AI AK BM CL FQ HK KQ V393 V453 V455 V482 V500 V636 V701 V703 V718 V745 V760 V856 V861 V866 V893 V900 V905 V906 V907 V911 V913 V915 V918 V919 V921 V922 V923 V929 V933 V949 V951 V952 V957 V965 V970 V973 V975 V992 V1003 V1007 V1018 V1026 V1034 V1036 V1040 V1051 V1058 V1068 V1073 V1074 V1075 V1077 V1094 V1104 V1186 V1187 V1280 V1292 V1294 V1309

HR	5906 5910 5934 5965 5969 5973 5996 5998 5999 6000 6001 6003 6006 6007 6012 6015 6017 6044 6051 6053 6054 6061 6070 6076 6077 6078 6080 6094 6097 6100 6106 6122 6145 6160 6178 6192 6206 6209 6210 6211 6214 6218 6221 6244 6260 6266 6272 6273 6282 6298 6311 6316 6331 6338 6344 6366 6371 6381 6382 6389 6398 6403 6405 6409 6420 6454 6456 6460 6470 6501 6503 6517 6523 6539 6557 6558 6583 6587 6597 6613 6628 6643 6648 6649 6651 6653 6657 6658 6668 6671 6675 6678 6682 6683

HD	143567 144432 145377 146436 150420 152424 153234 153950 155985 158042 159868 162020

Gliese	Gliese 618 Gliese 667 Gliese 682

Other	CD -35 11760 CD -38 10980 GCRT J1745-3009 GRO J1655-40 GSC 06214-00210 GX 340+0 GX 349+2 H1-36 H1743-322 HIP 79431 IGR J17091-3624 IGR J17252-3616 IRAS 17163-3907 MOA-2008-BLG-310L MXB 1735-44 OAO 1657-415 OGLE-2005-BLG-071L OGLE-2005-BLG-390L OGLE-2006-BLG-109L OGLE-2007-BLG-368L Pismis 24-1 PSR B1620-26 PSR B1706-44 PSR B1737-30 PSR J1614–2230 Rapid Burster 1RXS J160929.1-210524 1RXS J170849.0-400910 Scorpius X-1 Th 28 4U 1700-37 4U 1702-42 4U 1705-44 4U 1724-307 4U 1728-34 4U 1746-371 UScoCTIO 108 WASP-17 WR 86 Wray 17-96 XTE J1720-318 XTE J1739-302 XTE J1751-305

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