Celestial Composition

Spiral Galaxy NGC 3370, Home to Supernova Seen in 1994

Amid a backdrop of far-off galaxies, the majestic dusty spiral, NGC 3370, looms in the foreground in this NASA Hubble Space Telescope image. Recent observations taken with the Advanced Camera for Surveys show intricate spiral arm structure spotted with hot areas of new star...

Spiral Galaxy NGC 3370

Galaxy NGC 3370 Comparison of Ground and ACS Images

SN 1994ae was discovered by S. Van Dyk and the Leuschner Observatory Supernova Search (IAU Circular 6105) using an automated 0.76-meter telescope. The discovery image was taken on Nov. 14, 1994. The supernova was located about 30".3 west and 6".1 north of the galaxy's nucleus....

Details of Galaxy NGC 3370 From ACS Image

Center of Galaxy NGC 3370 Shows Dust Lanes and Uncommonly Ill-Defined Nucleus

The center of NGC 3370 shows well delineated dust lanes and an uncommonly ill-defined nucleus.

Blue Star Clusters and Distant Galaxies Near Edge of Galaxy NGC 3370

A region on the edge of the galaxy shows bright blue clusters of young, massive stars as well as distant, red background galaxies shining through.

Star Clusters and Distant, Red Galaxies Near Edge of Galaxy NGC 3370

A region on the edge of the galaxy shows bright blue clusters of young, massive stars as well as distant, red background galaxies shining through.

A Bright Galaxy Interacts With a Companion (Details from Image of NGC 3370)

An unusual concentration in the upper corner shows a complex region of tidal interaction between a bright galaxy and its companion. Superimposed are a foreground star in the Milky Way and a background galaxy.

Warped, Edge-On Spiral Galaxy (Details from Image of NGC 3370)

A Sombrero-galaxy-look-alike is seen edge on with a small warp in the middle right.

Merging Blue Galaxies (Details from Image of NGC 3370)

In the lower middle right, a distant filament of merging blue galaxies can be seen.

Light Curve of Cepheid Variable in NGC 3370

A graph showing the relative brightness change of a Cepheid variable in NGC 3370. Peak-to-trough variation represents a doubling in brightness.

NGC 3370: Celestial Composition

Pan of the galaxy NGC 3370 taken by Hubble's Advanced Camera for Surveys in early 2003. Adam Riess, an astronomer at the Space Telescope Science Institute in Baltimore, Md., observed NGC 3370 a dozen times over the course of a month and has seen many Cepheid variables. These...

Cepheid Variable in NGC 3370

Here we see a "movie" of 12 consecutive epochs of a long period (~50 days) Cepheid variable. The Cepheid is in the center of a crowded region of stars. The resolution of HST is required to pick out the variable star from its neighbors. The star was caught initially fading before...