J/other/Univ/10.465 FITS images of SAO 206462 (Xie+, 2024)
Disk Evolution Study Through Imaging of Nearby Young Stars (DESTINYS):
Dynamical evidence of a spiral-arm-driving and gap-opening protoplanet from
SAO 206462 spiral motion.
Xie C., Xie C., Ren B.B., Benisty M., Ginski C., Fang T., Casassus S.,
Bae J., Facchini S., Menard F., van Holstein R.G.
<Universe, 10, 465 (2024)>
=2024Univ....10.465X 2024Univ....10.465X (SIMBAD/NED BibCode)
ADC_Keywords: Stars, normal ; Interstellar medium ; Optical ; Infrared
Keywords: protoplanetary disks - coronagraphic imaging - orbital motion -
planetary system formation
Abstract:
In the early stages of planetary system formation, young exoplanets
gravitationally interact with their surrounding environments and leave
observable signature on protoplanetary disks. Among these structures,
a pair of nearly symmetric spiral arms can be driven by a giant
protoplanet. For the double-spiraled SAO 206462 protoplanetary disk,
we obtained three epochs of observations spanning 7yr using the Very
Large Telescope's SPHERE instrument in near-infrared J-band polarized
light. By jointly measuring the motion of the two spirals at three
epochs, we obtained a rotation rate of -0.85±0.05 deg per year. This
rate corresponds to a protoplanet at 66±3au on a circular orbit
dynamically driving both spirals. The derived location agrees with the
gap in ALMA dust-continuum observations, indicating that the spiral
driver may also carve the observed gap. What is more, a dust filament
at ∼63 au observed by ALMA coincides with the predicted orbit of the
spiral-arm-driving protoplanet. This double-spiraled system is an
ideal target for protoplanet imaging.
Description:
FITS files of disk images in SPHERE/IRDIS (J-band) from the Very Large
Telescope.
The stars are located at the mathematical centers of the arrays.
The units are in counts per pixel for Qphi data.
Objects:
-----------------------------------------------------
RA (2000) DE Designation(s)
-----------------------------------------------------
15 15 48.45 -37 09 16.02 SAO 206462 = HD 135344B
-----------------------------------------------------
File Summary:
--------------------------------------------------------------------------------
FileName Lrecl Records Explanations
--------------------------------------------------------------------------------
ReadMe 80 . This file
list.dat 121 3 List of fits images
fits/* . 3 Individual fits images
--------------------------------------------------------------------------------
See also:
J/A+A/560/A105 : SAO 206462 polarised Ks image (Garufi+, 2013)
Byte-by-byte Description of file: list.dat
--------------------------------------------------------------------------------
Bytes Format Units Label Explanations
--------------------------------------------------------------------------------
1- 10 A10 --- Name Star name
12- 13 I2 h RAh Right Ascension of center (J2000)
15- 16 I2 min RAm Right Ascension of center (J2000)
18- 22 F5.2 s RAs Right Ascension of center (J2000)
24 A1 --- DE- Declination sign of center (J2000)
25- 26 I2 deg DEd Declination of center (J2000)
28- 29 I2 arcmin DEm Declination of center (J2000)
31- 35 F5.2 arcsec DEs Declination of center (J2000)
37- 39 I3 --- Nx Number of pixels along X-axis
41- 43 I3 --- Ny Number of pixels along Y-axis
45- 47 I3 Kibyte size Size of FITS file
49- 72 A24 --- FileName Name of FITS file, in subdirectory fits
74-121 A48 --- Title Title of the FITS file
--------------------------------------------------------------------------------
Acknowledgements:
Bin Ren, bin.ren(at)oca.eu
(End) Patricia Vannier [CDS] 18-Dec-2024