GAMMA_CASSIOPEIAE
Binary evolution is one of the most fundamental ingredients in astronomy. Binaries consisting of a high-mass star and a compact object constitute an important milestone in the evolution. Gamma Cas and its analogs could be the long-sought missing population of Be/WD binaries, though an alternative scenario exists. The two scenarios (a) Be/WD binary and (b) magnetic disk-star interaction on Be star surface differ most distinctively in the production site of the hard X-rays. We propose two straightforward and fully independent tests with Resolve to distinguish (a) and (b); the test 1 is the RV change of Fe lines as a function of the orbital phase. The test 2 is the line profile of the flurescent Fe Ka lines. Based on our PV experience, the two tests are only possible with Resolve.
obsid = 201002010 / Unique Observation/Sequence Number
object = GAMMA_CASSIOPEIAE / Object name
pi_name = TSUJIMOTO MASAHIRO / Proposal Principal Investigator Name
ra = 14.1752139901645 / Right Ascension (Pointing Position) (deg)
dec = 60.7157837881489 / Declination (Pointing Position) (deg)
roll_angle = 93.9728449460548 / Roll Angle (deg)
start_time = 2025-06-16T11:33:04 / Start Time of the Observation
stop_time = 2025-06-17T11:28:04 / Stop Time of the Observation
exposure = 46521.299961 / Effective Total Observation Exposure (s)
public_date= 2026-06-25 / Public Date