Compass and Scale Image of TW Hydrae Disk

 Compass and Scale Image of TW Hydrae Disk

Credits

NASA, ESA, and Z. Levay (STScI/AURA)

About The Object
Object Name TW Hydrae
Object Description T-Tauri Star with Disk
R.A. Position 11h 1m 52.98s
Dec. Position -34° 42' 24.77"
Constellation Hydra
Distance 176 light-years (54 parsecs)
About The Data
Data Description The image was created from Hubble data from proposal : A. Weinberger (Carnegie Institution of Washington), G. Schneider (U. Arizona/Steward Observatory), M. Silverstone (U. of Alabama), C. Dumas (ESO), A. Roberge (GSFC), and J. Debes (STScI).
Instrument HST>NICMOS/NIC2
Exposure Dates June 17, 2005
Filters F171M, F180M, F204M, and F222M
About The Image
Color Info This image was originally black and white and measured brightness, multiplied by the distance to the stellar position squared. These brightness values were translated into a range of reddish hues. Such color "maps" can be useful in helping to distinguish subtly varying brightness in an image. The central dark spot in the release data is due to the NICMOS coronagraph, not due to a central clearing in the disk. F171M + F180M + F222M
Compass Image Compass and Scale Image of TW Hydrae Disk
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
  • Proposal: A description of the observations, their scientific justification, and the links to the data available in the science archive.
  • Science Team: The astronomers who planned the observations and analyzed the data. "PI" refers to the Principal Investigator.
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.