2026AJ....171..113C

Query : 2026AJ....171..113C

2026AJ....171..113C - Astron. J., 171, 113 (2026/February-0)

Oxygen Isotope Constraints on the Importance of Photochemical Processing in Protoplanetary Disks.

CIESLA F.J., VAN CLEPPER E., BERGNER J. and BERGIN E.

Abstract (from CDS):

Observations have revealed evidence of photochemical processing in protoplanetary disks. This processing occurs in the photon-dominated layer, the optically thin regions of the disk high above the disk midplane. It remains unclear, however, how much this photochemical processing impacts the compositions of the planets and their building blocks within the disk. Here we use the oxygen isotopic compositions of solar system solids, which have been attributed to photochemistry in the solar nebula, to quantitatively evaluate whether this processing could have produced the conditions needed to provide the diversity of compositions seen in the solar system. We do this by modeling the chemical evolution while fine dust grows into the building blocks of the planets. We find that the oxygen isotopic evolution cannot be attributed to processing in the solar nebula and must instead be inherited from the parent molecular cloud. Further, our results indicate that the observed photochemical processing in protoplanetary disks does not significantly impact the compositions of planets that form within them.

Abstract Copyright: © 2026. The Author(s). Published by the American Astronomical Society.

Journal keyword(s): Planet formation - Protoplanetary disks - Astrochemistry - Cosmochemistry - Meteorites - Solar nebulae

Simbad objects: 1

goto Full paper

goto View the references in ADS

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 THA 15-12 Or* 15 56 09.2066646912 -37 56 06.126118692   13.12 11.93 11.45   M0e 554 0

Query : 2026AJ....171..113C

Basic data :
THA 15-12 -- Orion Variable
Other object types: otypes_help 		* (2016MNRAS,HIP,...), X (2E,1RXS,...), Em* (HBC,Sz,...), MIR (SSTc2d,WISEA,...), Or* (2012ApJ), Y*O (2017A&A), Y*? (2018A&A), V* (1SWASP,V*), TT* (1999AJ), NIR (2MASS), IR (IRAS)
ICRS coord. (ep=J2000) : 		15 56 09.2066646912 -37 56 06.126118692 (Optical) [ 0.0191 0.0138 90 ] A 2020yCat.1350....0G
FK4 coord. (ep=B1950 eq=1950) : 		15 52 51.1282085607 -37 47 23.005057083 [ 0.0191 0.0138 90 ]
Gal coord. (ep=J2000) : 		338.4875461713934 +11.8708473996725 [ 0.0191 0.0138 90 ]
Proper motions mas/yr : 		-12.059 -23.727 [0.026 0.019 90] A 2020yCat.1350....0G
Radial velocity / Redshift / cz : 		V(km/s) -0.5 [1.3] / z(spectroscopic) -0.000002 [0.000004] / cz -0.50 [1.30]
   (Opt) B 2017A&A...602A..33F
Parallaxes (mas): 		6.4175 [0.022] A 2020yCat.1350....0G
Spectral type: 		M0e D 1994AJ....108.1071H
Fluxes (7) :
B 13.12 [0.01] E 2012yCat.1322....0Z
V 11.93 [0.01] E 2012yCat.1322....0Z
R 11.45 [0.04] D 2012yCat.1322....0Z
G 11.186081 [0.003859] C 2020yCat.1350....0G
J 8.783 [0.021] C 2003yCat.2246....0C
H 8.089 [0.040] C 2003yCat.2246....0C
K 7.739 [0.023] C 2003yCat.2246....0C
SIMBAD within arcmin
Overlay Simbad points in this preview
Back
All CDSPortal (CDSPortal)
Send to sendBySAMP sendBySAMP
sedIcon
within arcsec sed-help-icon

Hierarchy : number of linked objects
whatever the membership probability is (see description here ) :

: 4
: 2 		: 1884 Display criteria :

Identifiers (29) :
An access of full data is available using the icon Vizier near the identifier of the catalogue

HIP 78053 HIC 78053 THA 15-12 WISE J155609.20-375606.3
** HDS 2242 IRAS 15528-3747 TIC 364203272 2XMM J155609.2-375606
** GHE 38A 2MASS J15560921-3756057 UCAC2 15776163 [KWS97] Lupus 2 24
CCDM J15562-3756AB PDS 75 UCAC4 261-089667 Gaia DR3 6010135758090335232
2E 3526 1RXS J155609.3-375556 V* IM Lup Gaia DR2 6010135758090335232
2E 1552.8-3747 SSTc2d J155609.2-375607 WDS J15562-3756A
GSC 07838-00962 1SWASP J155609.20-375605.9 WDS J15562-3756Aa,Ab
HBC 605 Sz 82 WISEA J155609.19-375606.3

References (554 between 1850 and 2026) (Total 554)
Simbad bibliographic survey began in 1850 for stars (at least bright stars) and in 1983 for all other objects (outside the solar system).
Follow new references on this object
                Reference summaries :

                from: to:

                 or select by : (not exhaustive, explanation here)

Collections of Measurements Description of Measurements

Velocities : 2    Distance : 2    Var : 1    Rot : 1    Fe/H : 1    Plx : 2    PM : 4    SpT : 3   

   

Observing logs
Herschel : 1    IUE : 3   

   

External archives :

Archive data at HEASARC - High-Energy Astrophysics Science Archive Research Center

Data at NED - NASA/IPAC Extragalactic Database : THA 15-12

Link by name to the catalogue in VizieR :

HIP 78053 CCDM J15562-3756AB 2E 3526 GSC 07838-00962 HIC 78053
IRAS 15528-3747 2MASS J15560921-3756057 1RXS J155609.3-375556 UCAC2 15776163 UCAC4 261-089667
V* IM Lup WDS J15562-3756A WDS J15562-3756Aa,Ab WISEA J155609.19-375606.3 WISE J155609.20-375606.3
Gaia DR3 6010135758090335232 Gaia DR2 6010135758090335232

Search by coordinates in Vizier (radius: 5 arcsec)

Annotations :
Annotations allow a user to add a note or report an error concerning the astronomical object and its data. It requires registration to post a note. See description .
Please, have a look at Best practices. The list of all annotations to SIMBAD objects can be found here .

The annotation server is currently not available. Sorry for any inconvenience

To bookmark this query, right click on this link: simbad:objects in 2026AJ....171..113C and select 'bookmark this link' or equivalent in the popup menu