HST PHAT Detail of M31
About This Image
Credits
IMAGE:
NASA, ESA, Benjamin
F.
Williams
(UWashington), Julianne
Dalcanton
(UWashington)
Keywords
| About The Object | |
|---|---|
| Object Name | M31, NGC 224, Andromeda Galaxy detail |
| Object Description | PHAT Treasury Survey Region of M31 |
| R.A. Position | 00h 42m 44.0s |
| Dec. Position | 41° 16' 8.99" |
| Constellation | Andromeda |
| Distance | About 2.5 million light-years (0.8 megaparsecs) |
| About The Data | |
| Data Description | The Panchromatic Hubble Andromeda Treasury (PHAT) survey of M31 is an ongoing HST Treasury proposal. These inset images were created from Hubble data from proposal 12058 (PI: J. Dalcanton, University of Washington, Seattle). |
| Instrument | HST>WFC3/UVIS, HST>WFC3/IR, and HST>ACS/WFC |
| Exposure Dates | 2010 and 2011 |
| Filters | WFC3/UVIS: F275W (UV) and F336W (U) ACS/WFC: F475W (g) and F814W (I) |
| About The Image | |
| Color Info | This image is a composite of separate exposures acquired by the WFC3 and ACS instruments on HST. Several filters were used to sample broad wavelength ranges. The color results from assigning different hues (colors) to each monochromatic (grayscale) image associated with an individual filter. In this case, the assigned colors are: Detail M31 Image (at bottom) Light purple: F275W (UV) Blue: F336W (U) Green: F475W (g) Dark red: F814W (I) |
| 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. |