Principal Investigator Email Address
nhuelamo@laeff.inta.es
Estimated Total Execution Time (hours, including overheads)
6.2
General Description
H-band spectroscopy of the young star TW Hya. The aim of the program is to build its radial velocity curve. The target is the brightest source in the FOV (H-band = 7.6 mag). The target will be observed nine times on different nights, preferably consecutive (but this is not a tight constraint).
Waiver Requests
No Waiver Request was submitted
Critical Observing Condition Constraints
Please, execute the OBs with seeing (as measured in the DIMM) BIGGER THAN or EQUAL to 0.9 arcsec. Please, CHECK that the star is not SATURATED in the slit viewer detector. This can happen if the seeing decreases during the exposure.
Time-Critical Aspects
N/A
Special Execution Requirements
We have submitted 9 science OBs for the target, TW Hya. We have named them: twhya_science_1, twhya_science_2, ...etc. Please, execute ONLY one science OB per night. IDEALLY we would like to have data in consecutive nights, but this is not a tight constraint. A RV TEMPLATE should be ALWAYS observed together with the target: The template should be observed right AFTER or BEFORE the science ob. The RV template OBS are named: CAL_twhya_RVstd_1, CAL_twhya_RVstd_2, etc.. There is one RV template OB for each science OB. A TELLURIC STANDARD must be observed with only 3 of the 9 science OBs. These 3 measures have to be done in the following nights: - in the night of the first observation; - in the night of the fifth measure; - with the last measure. -- The telluric can be observed anytime during the night, even during twilight, but preferably at similar airmass than the science ob. The OBs are named: CAL_twhya_telstd_1, CAL_twhya_telstd_5 and CAL_twhya_telstd_9. Therefore, to do this program, you must complete the sequence below. Note that the numeration corresponds to the 9 different science observations: 1 - twhya_science + twhya_RVstd + twhya_telstd(any time during the night) 2,3,4 - twhya_science + twhya_RVstd 5 - twhya_science + twhya_RVstd + twhya_telstd(any time during the night) 6,7,8 - twhya_science + twhya_RVstd 9 - twhya_science + twhya_RVstd + twhya_telstd(any time during the night) ALWAYS MAKE "twhya_science" AND "twhya_RVstd" MEASUREMENTS CONSECUTIVELY!
Special Calibration Information
A RV TEMPLATE (HD108309) and a telluric (HIP96145) should be observed together with the target: - The RV standard should be observed right before or rigth after the science target. - The telluric standard will be observed only 3 times (see Exec. requirements). It can be observed anytime during the night, even during twilight. Still, it is preferable to have it observed right after or right before the science target.
ToO Information
N/A
ToO Activators List
N/A
Do the README file and the instrument comments of the telluric stars OBs include the required S/N/pixel of the spectrum of the telluric star, its spectral type and allowed spectral range?
Do any OBs include wavelength or flatfield calibrations?
If you are observing Moving Targets, have you attached suitable ephemeris files to your OBs?
N/A
If the slit viewer guide star is different from the target, are the RA and DEC offsets accurate to within 0.05 arcsec and do they take into account the relative proper motion between the two objects?
N/A
If you have preferences which OBs should be executed first for objects at similar RA, did you make use of the User Priority field in the OBs?
N/A