2022ApJ...931...42E

Query : 2022ApJ...931...42E

2022ApJ...931...42E - Astrophys. J., 931, 42-42 (2022/May-3)

Generating Stellar Obliquity in Systems with Broken Protoplanetary Disks.

EPSTEIN-MARTIN M., BECKER J. and BATYGIN K.

Abstract (from CDS):

Recent advances in submillimeter observations of young circumstellar nebulae have opened an unprecedented window into the structure of protoplanetary disks that has revealed the surprising ubiquity of broken and misaligned disks. In this work, we demonstrate that such disks are capable of torquing the spin axis of their host star, representing a hitherto unexplored pathway by which stellar obliquities may be generated. The basis of this mechanism is a crossing of the stellar spin precession and inner disk regression frequencies, resulting in adiabatic excitation of the stellar obliquity. We derive analytical expressions for the characteristic frequencies of the inner disk and star as a function of the disk gap boundaries and place an approximate limit on the disk architectures for which frequency crossing and the resulting obliquity excitation are expected, thereby illustrating the efficacy of this model. Cumulatively, our results support the emerging consensus that significant spin-orbit misalignments are an expected outcome of planet formation.

Abstract Copyright: © 2022. The Author(s). Published by the American Astronomical Society.

Journal keyword(s): Planetary system formation - Planet formation - Protoplanetary disks - Pre-main sequence stars - Pre-main sequence - Stellar accretion disks

Simbad objects: 1

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Number of rows : 1
N Identifier Otype ICRS (J2000)
RA 		ICRS (J2000)
DEC 		Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2026 		#notes
1 BD-19 4173 ** 15 39 25.8625321656 -20 11 55.770493200   11.68 11.11     ~ 53 0

Query : 2022ApJ...931...42E

Basic data :
BD-19 4173 -- Double or Multiple Star
Other object types: otypes_help 		* (BD,EPIC,...), ** (2019MNRAS), NIR (2MASS)
ICRS coord. (ep=J2000) : 		15 39 25.8625321656 -20 11 55.770493200 (Optical) [ 0.0207 0.0141 90 ] A 2020yCat.1350....0G
FK4 coord. (ep=B1950 eq=1950) : 		15 36 32.0668297794 -20 02 12.779713234 [ 0.0207 0.0141 90 ]
Gal coord. (ep=J2000) : 		348.0523183636871 +27.5995933931307 [ 0.0207 0.0141 90 ]
Proper motions mas/yr : 		27.043 -16.820 [0.027 0.018 90] A 2020yCat.1350....0G
Radial velocity / Redshift / cz : 		V(km/s) 19.70 [0.37] / z(spectroscopic) 0.000066 [0.000001] / cz 19.70 [0.37]
   (Opt) A 2018yCat.1345....0G
Parallaxes (mas): 		3.7126 [0.0208] A 2020yCat.1350....0G
Fluxes (6) :
B 11.68 [0.10] D 2000A&A...355L..27H
V 11.11 [0.11] D 2000A&A...355L..27H
G 10.821753 [0.002776] C 2020yCat.1350....0G
J 9.771 [0.022] C 2003yCat.2246....0C
H 9.477 [0.022] C 2003yCat.2246....0C
K 9.420 [0.019] C 2003yCat.2246....0C
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Hierarchy : number of linked objects
whatever the membership probability is (see description here ) :

: 2 		Display criteria :

Identifiers (10) :
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BD-19 4173 K2-290 TYC 6193-663-1 Gaia DR2 6253844468882760832
EPIC 249624646 2MASS J15392585-2011557 Gaia DR3 6253844468883543680
GSC 06193-00663 TIC 70803960 Gaia DR1 6253844464584349056

References (53 between 1850 and 2026) (Total 53)
Simbad bibliographic survey began in 1850 for stars (at least bright stars) and in 1983 for all other objects (outside the solar system).
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Collections of Measurements Description of Measurements

Velocities : 1    Distance : 2    Var : 1    Rot : 2    Fe/H : 5    Plx : 3    PM : 2   

   

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BD-19 4173 GSC 06193-00663 2MASS J15392585-2011557 TYC 6193-663-1 Gaia DR3 6253844468883543680
Gaia DR1 6253844464584349056 Gaia DR2 6253844468882760832

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