Chandra's image of Messier 101, taken in X-ray light, shows the high-energy features of this spiral galaxy. X-rays are generally created in violent and/or high-temperature events. The white dots are X-ray sources that include the remains of exploded stars as well as material colliding at extreme speeds around black holes. The pink and blue colors are emission from million-degree gas and from clusters of massive stars. The pink emission indicates lower-energy X-rays and the blue higher-energy X-rays. One reason astronomers study Messier 101's X-rays is to better understand how black holes grow in spiral galaxies.
Credits
NASA, CXC, and K. Kuntz (JHU)| About The Object | |
|---|---|
| Object Name | M101, NGC 4547, The Pinwheel Galaxy |
| Object Description | Face-on Spiral Galaxy |
| R.A. Position | 14h 03m 13s |
| Dec. Position | +54° 20' 53" |
| Constellation | Ursa Major |
| Distance | 21.8 million light-years (6.7 megaparsecs) |
| Dimensions | This image is 18 arcminutes (114,000 light-years or 35,000 parsecs) wide. |
| About The Data | |
| Data Description | The science team was led by K. Kuntz (Johns Hopkins University). |
| Instrument | CXO>ACIS |
| Exposure Dates | March 2000 - January 2005 |
| Filters | 0.45 - 1.00 keV and 1.00 - 2.00 keV |
| About The Image | |
| Color Info | Pink: 0.45 - 1.00 keV Blue: 1.00 - 2.00 keV |
| 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. |
