In this comparison of actual observations with simulations, the top images show Hubble observations of the density of gas in the central portion of two galaxies. The bottom images are computer simulations that are remarkably similar to the Hubble observations. Knots of star formation in the two galaxies show how gas falling into a galaxy's center is controlled by jets from the central black hole.
Credits
NASA, ESA, M. Donahue (Michigan State University), and Y. Li (University of Michigan)| About The Object | |
|---|---|
| Object Name | MACS J1931, and MACS J1532 |
| Object Description | Brightest Cluster Galaxies (BCG) |
| About The Data | |
| Data Description | Data for galaxies taken with the WFC3/UVIS instrument were obtained as part of the CLASH proposal: , PI: M. Postman (STScI) et al. Data for galaxies taken with the ACS/SBC instrument were obtained from proposal: , PI: R. Mittal (Max Planck Institute for Gravitational Physics) et al. The WFC3/UVIS BCG science team comprises: M. Donahue and T. Connor (Michigan State University), K. Fogarty (STScI), Y. Li (University of Michigan, Ann Arbor), M. Voit (Michigan State University), M. Postman and A. Koekemoer (STScI), J. Moustakas (Siena College, NY), L. Bradley (STScI), and H. Ford (JHU). The ACS/SBC BCG science team comprises: G. Tremblay (Yale University/ESO), C. O’Dea and S. Baum (University of Manitoba/RIT), R. Mittal (RIT/Max Planck Institute for Gravitational Physics), M. McDonald (Kavli Institute/MIT), F. Combes (Observatoire de Paris/CNRS), Y. Li (University of Michigan, Ann Arbor), B. McNamara (Waterloo University, Ontario/Harvard-Smithsonian Center for Astrophysics), M. Bremer (University of Bristol, UK), T. Clarke (Naval Research Laboratory), M. Donahue (Michigan State University), A. Edge (Durham University), A. Fabian (Institute of Astronomy), S. Hamer (Observatoire de Paris/CNRS), M. Hogan (Waterloo University, Ontario), J. Oonk (Netherlands Institute for Radio Astronomy), A. Quillen (University of Rochester), J. Sanders (Max Planck Institute for Extraterrestrial Physics), P. Salomé (Observatoire de Paris/CNRS), and M. Voit (Michigan State University). |
| Instrument | HST>WFC3/UVIS |
| About The Image | |
| Compass Image |  |
| About The Object | |
|---|---|
| Object Name | A name or catalog number that astronomers use to identify an astronomical object. |
| Object Description | The type of astronomical object. |
| R.A. Position | Right ascension – analogous to longitude – is one component of an object's position. |
| Dec. Position | Declination – analogous to latitude – is one component of an object's position. |
| Constellation | One of 88 recognized regions of the celestial sphere in which the object appears. |
| Distance | The physical distance from Earth to the astronomical object. Distances within our solar system are usually measured in Astronomical Units (AU). Distances between stars are usually measured in light-years. Interstellar distances can also be measured in parsecs. |
| Dimensions | The physical size of the object or the apparent angle it subtends on the sky. |
| About The Data | |
| Data Description |
|
| Instrument | The science instrument used to produce the data. |
| Exposure Dates | The date(s) that the telescope made its observations and the total exposure time. |
| Filters | The camera filters that were used in the science observations. |
| About The Image | |
| Image Credit | The primary individuals and institutions responsible for the content. |
| Publication Date | The date and time the release content became public. |
| Color Info | A brief description of the methods used to convert telescope data into the color image being presented. |
| Orientation | The rotation of the image on the sky with respect to the north pole of the celestial sphere. |
