ELIAS29
Stellar X-ray activity can induce chemical reactions in the protoplanetary disk and affect planet formation. The low-ionized Fe line at ~ 6.4 keV can be a good tracer of the X-ray penetration depth toward the disk, which can reveal the ionization process of surrounding envelope and disk by coronal X-rays. We propose a 100 ks observation of the protostar Elias 29 with Resolve to estimate the X-ray penetration depth and confirm the Fe line is formed from the disk. Using the same pointing, we also use Xtend, which simultaneously observes 9 surrounding pre-main-sequence stars. From this, we can provide the constraint on the line formation region from another viewpoint, by combining the Fe line equivalent widths and the disk inclination angles from the high spatially-resolved ALMA data.
obsid = 201047010 / Unique Observation/Sequence Number
object = ELIAS29 / Object name
pi_name = INOUE SHUN / Proposal Principal Investigator Name
ra = 246.789949973169 / Right Ascension (Pointing Position) (deg)
dec = -24.6220331005363 / Declination (Pointing Position) (deg)
roll_angle = 278.055210444295 / Roll Angle (deg)
start_time = 2025-08-11T08:07:04 / Start Time of the Observation
stop_time = 2025-08-13T20:16:04 / Stop Time of the Observation
exposure = 115060.5328 / Effective Total Observation Exposure (s)
public_date= 2026-08-22 / Public Date