2023Natur.624..263B

Query : 2023Natur.624..263B

2023Natur.624..263B - Nature, 624, 263-266 (2023/December-0)

15NH3 in the atmosphere of a cool brown dwarf.

BARRADO D., MOLLIERE P., PATAPIS P., MIN M., TREMBLIN P., ARDEVOL MARTINEZ F., WHITEFORD N., VASIST M., ARGYRIOU I., SAMLAND M., LAGAGE P.-O., DECIN L., WATERS R., HENNING T., MORALES-CALDERON M., GUEDEL M., VANDENBUSSCHE B., ABSIL O., BAUDOZ P., BOCCALETTI A., BOUWMAN J., COSSOU C., COULAIS A., CROUZET N., GASTAUD R., GLASSE A., GLAUSER A.M., KAMP I., KENDREW S., KRAUSE O., LAHUIS F., MUELLER M., OLOFSSON G., PYE J., ROUAN D., ROYER P., SCHEITHAUER S., WALDMANN I., COLINA L., VAN DISHOECK E.F., RAY T., OSTLIN G. and WRIGHT G.

Abstract (from CDS):

Brown dwarfs serve as ideal laboratories for studying the atmospheres of giant exoplanets on wide orbits, as the governing physical and chemical processes within them are nearly identical. Understanding the formation of gas-giant planets is challenging, often involving the endeavour to link atmospheric abundance ratios, such as the carbon-to-oxygen (C/O) ratio, to formation scenarios. However, the complexity of planet formation requires further tracers, as the unambiguous interpretation of the measured C/O ratio is fraught with complexity. Isotope ratios, such as deuterium to hydrogen and ¹⁴N/¹⁵N, offer a promising avenue to gain further insight into this formation process, mirroring their use within the Solar System. For exoplanets, only a handful of constraints on ¹²C/¹³C exist, pointing to the accretion of ¹³C-rich ice from beyond the CO iceline of the disks. Here we report on the mid-infrared detection of the ¹⁴NH₃ and ¹⁵NH₃ isotopologues in the atmosphere of a cool brown dwarf with an effective temperature of 380 K in a spectrum taken with the Mid-Infrared Instrument (MIRI) of JWST. As expected, our results reveal a ¹⁴N/¹⁵N value consistent with star-like formation by gravitational collapse, demonstrating that this ratio can be accurately constrained. Because young stars and their planets should be more strongly enriched in the ¹⁵N isotope, we expect that ¹⁵NH₃ will be detectable in several cold, wide-separation exoplanets.

Abstract Copyright: 2023 The Author(s), under exclusive licence to Springer Nature Limited

Journal keyword(s):

Simbad objects: 1

Full paper

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	WISE J182831.08+265037.7	BD*	18 28 30.30897	+26 50 36.0751						Y0	76	0

Query : 2023Natur.624..263B

Basic data :

WISE J182831.08+265037.7 -- Brown Dwarf

MIR (WISEA,WISEP,...), BD* (2012AJ), * (CNS5)

18 28 30.30897 +26 50 36.0751 (Middle-IR) [ ] C 2021ApJS..253....7K

18 26 26.27259 +26 48 27.8749 [ ]

055.07309817 +16.57241759 [ ]

1016.5 169.3 [0.8 0.8 90] C 2021ApJS..253....7K

100.3 [2.0] C 2021ApJS..253....7K

Y0 C 2011ApJS..197...19K

J 23.48 [0.23] C 2014ApJ...796...39T

H 22.73 [0.13] D 2017ApJ...842..118L

K 23.48 [0.36] D 2017ApJ...842..118L

Overlay

points in this preview

2MASS DSS

All

(CDSPortal)

Send to

An access of full data is available using the icon Vizier near the identifier of the catalogue

`CNS5 4565`	`WISEP J182831.08+265037.8`	`EQ J1828+2650`
`WISEA J182831.08+265037.6`	`WISE J182831.08+265037.7`

References (76 between 1850 and 2026) (Total 76)
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

Collections of Measurements

External archives :

Link by name to the catalogue in VizieR :

WISEA J182831.08+265037.6 WISE J182831.08+265037.7

Search by coordinates in Vizier (radius: 20 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 2023Natur.624..263B and select 'bookmark this link' or equivalent in the popup menu