SUMMARY OF SEQUENCE NUMBER 200012
SUMMARY OF SEQUENCE NUMBER 200012
Title: AXAF GRATING SPECTROSCOPY OF ACTIVE BINARIES
Observer: SKINNER
Subject Category: Normal Stars and WD
Seq: 200012 ObsId: 00014
Long-term Plan bin: 25-Apr-2000
ABSTRACT
We propose to observe two active binaries with the AXAF HETGS and LETGS. TZ CrB is a G0 V + G0 V RS CVn binary. The HETGS observation will span an entire 1.14-d orbital period and will probably include one large flare. The HETGS line profiles may reveal high-velocity material ejected at the onset of a flare. Density and temperature-sensitive line ratios obtained at different orbital phases will be used to map the coronal geometry of TZ CrB. 44 Boo is an eclipsing, W UMa-type contact binary. The LETGS observation of 44 Boo will span no less than two 0.27-d orbital periods and will be used to perform coronal eclipse mapping and to investigate flares. Moreover, 44 Boo's maximum radial velocity separation of 230 km/s should be resolved in the longer wavelength LETG line profiles.
TARGET SUMMARY
| TARGET NAME |
RA | DEC |
TIME |
SI |
GRAT |
TYPE |
TC |
ROLL |
PRE |
PHASE |
MULTI |
PRI |
| 44 BOO |
225.947083 | 47.654056 |
60.00000 |
ACIS-S |
HETG |
GTO |
yes |
no |
no |
no |
yes |
5 |
IMAGES
(NOTE: RASS images currently only available for targets LTS scheduled on or after Apr-09-2000)
PARAMETERS
Obscat Parameters
