3C 48 is one of four primary calibrators used by the Very Large Array (along with 3C 138 and 3C 147, and 3C 286). Visibilities of all other sources are calibrated using observed visibilities of one of these four calibrators.

3C 48是剑桥大学电波星表第三版中的第一个源，它是由Allan Sandage和 Thomas Matthews 于1960年通过 干涉仪 发现的。 Jesse Greenstein和Thomas Matthews发现其 红移 足足有0.367，是当时所知最高红移的源之一。 直到1982年，人们才发现其周围的一个黯淡星系状星云和3C 48有相同的红移，加固了3C 48位于遥远星系的理论。 3C 48也是第一颗被发现有围绕着它的、有着相同红移星系的类星体。 3C 48，剑桥大学第三射电星表第48号射电源。 它的发现有一段有趣的 …

3C 48是劍橋大學電波星表第三版中的第一個源，它是由艾伦·桑德奇和湯瑪斯·馬修（Thomas Matthews）于1960年通過干涉儀發現的。 [3] 杰西·格林斯坦和湯瑪斯·馬修發現其紅移足足有0.367，是當時所知最高紅移的來源之一。

This page shows you an optical image and a spectrogram of the Quasar 3C48 lying at about 2.5 degrees north of the M33, the Triangulum Galaxy. The 3C48 with a brightness of about 16.5th magnitude was discovered in 1960, but its anomalous spectrum could not be explained at …

3C 48 is a Quasar located in the constellation of Triangulum in the northern hemisphere. 3C 48 is not a Messier Object and doesn't have a Messier Number. A Quasar is a radio active galaxy with particles ejected from a stream at an angle to us. 3C 48 location is 01 37 41.2995845985 (R.A.) and +33 09 35.079126038 (Dec.).

…but powerful radio object designated 3C 48 with a stellar optical image. When they obtained the spectrum of the optical object, they found unexpected and at first unexplainable emission lines superimposed on a flat continuum. This object remained a mystery until another similar but optically brighter object, 3C 273, was… Read More

Optical spectra for 3C 48 show several very broad emission features, the most intense at X 3832 being unidentified. Spectra by Schmidt of 3C 196 and 3C 286 show other unusual features. The radio structure of the three radio stars is similar in that each has an …

3C 48 was the first source in the Third Cambridge Catalog of Radio Sources to be optically identified by Allan Sandage and Thomas Matthews in 1960 using interferometry. Jesse Greenstein and Thomas Matthews found that it had a redshift of 0.367, one of the highest redshifts of any source known at the time.

3C 48 is a radio galaxy about four billion light-years away. It was originally observed as a point-like radio source (a quasar) and later detected in visible light. Characteristics: Triangulum - constellation. 01h37m41.1s - right ascension. +33deg09m32s - declination. 0.367 - redshift. 3.9 billion ly - distance. E - galaxy classification.

2014年9月30日 · We investigate the properties of the high-velocity outflow driven by the young radio jet of 3C 48, a compact-steep-spectrum source. We use the Space Telescope Imaging Spectrograph on board the Hubble Space Telecope to obtain (1) low-resolution UV and optical spectra and (2) multi-slit medium-resolution spectra of the ionized outflow.