In the course of the ROSAT all-sky survey the S0 galaxy NGC 4104 was
found to be a surprisingly strong X-ray source with a luminosity of 1.6
10^42erg/sec. S0 galaxies are generally found to be weak radio and X-ray
sources. The observed high X-ray luminosity hints at the presence of
either a low-luminosity Seyfert nucleus or large amounts of hot
ionized gas in NGC 4104, both of which would also be unexpected for an
S0 galaxy.
NGC 4104, is my second classification of galaxies within the category of Ramanujan Doubles.
Since then, integer solutions to:
I^3 + J^3 = K^3 + L^3
have been called “Ramanujan Numbers” more specifically Ramanujan Doubles.
Astrophysical data for NGC 4104 is as follows:
Observation and Astrometry data
Constellation: Coma Berenices
Right ascension: 12h06m38.80s
Declination: +28°10'25.0"
Aparent dimensions: 2.512′ × 1.148′
Catalogs and designations:
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Proper Names (Edit)
NGC 2000.0 NGC 4104
HYPERLEDA-I PGC 38407
Galaxy
NGC 4104 UGC 7099
Constellation: Coma Berenices
Dimension: 2.6'x 1.6'
Magnitude: 12.10
Surface Brightness: 13.40
Description: pB
pS;lE;bM H II 370
J2000 RA: 12h06m36.00s DE:+28°10'00.0"
Date RA: 12h06m59.83s DE:+28°07'23.7"
Birmingham 2007-10-21 10h12m ( TU + 1h00m )
Sideral Time : 11h02m
Hour Angle : 22h55m
Azimuth :+147°18'
Altitude :+62°49'
Rise : 2h16m Azimuth:+38°05'
Culmination : 11h18m
Set : 20h21m Azimuth:+321°55'
Distance to the last object : +00°00'00.0" PA:180
0h00m00.0s +00°00'00"
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