2017A&A...603L...6H


C.D.S. - SIMBAD4 rel 1.7 - 2021.01.24CET00:35:08

2017A&A...603L...6H - Astronomy and Astrophysics, volume 603, L6-6 (2017/7-1)

Direct evidence of multiple reservoirs of volatile nitrogen in a protosolar nebula analogue.

HILY-BLANT P., MAGALHAES V., KASTNER J., FAURE A., FORVEILLE T. and QI C.

Abstract (from CDS):

Isotopic ratios are keys to understanding the origin and early evolution of the solar system in the context of Galactic nucleosynthesis. The large range of measured 14N/15N isotopic ratios in the solar system reflects distinct reservoirs of nitrogen whose origins remain to be determined. We have directly measured a C14N/C15N abundance ratio of 323±30 in the disk orbiting the nearby young star TW Hya. This value, which is in good agreement with nitrogen isotopic ratios measured for prestellar cores, likely reflects the primary present-day reservoir of nitrogen in the solar neighbourhood. These results support models invoking novae as primary 15N sources as well as outward migration of the Sun over its lifetime, and suggest that comets sampled a secondary, 15N-rich reservoir during solar system formation.

Abstract Copyright: © ESO, 2017

Journal keyword(s): astrochemistry - ISM: abundances - galaxies: abundances - Galaxy: evolution - comets: general - comets: general

Simbad objects: 11

goto Full paper

goto View the reference in ADS

Number of rows : 11

N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2021
#notes
1 Barnard 1 MoC 03 33 16.3 +31 07 51           ~ 269 0
2 HD 31648 Ae* 04 58 46.2654165113 +29 50 36.990341242 7.84 7.78 7.62 7.76 7.43 A5Vep 408 0
3 LDN 1544 DNe 05 04 16.6 +25 10 48           ~ 709 0
4 HD 73882 EB* 08 39 09.53412 -40 25 09.2608 7.07 7.59 7.19 6.67 6.30 O8.5IV 223 2
5 QSO B1034-293 QSO 10 37 16.07973476 -29 34 02.8133345   16.46 16.46 17.54   ~ 277 1
6 V* TW Hya TT* 11 01 51.9054298616 -34 42 17.031550898   11.94 10.50 10.626 9.18 K6Ve 1587 1
7 3C 279 QSO 12 56 11.1664521013 -05 47 21.531840471   18.01 17.75 15.87   ~ 2742 2
8 LDN 1689 DNe 16 32 22.5 -24 28 29           ~ 111 0
9 HD 154368 s*b 17 06 28.3687923960 -35 27 03.759955171 6.10 6.63 6.13 7.12   O9.5Iab 268 0
10 HD 169454 s*b 18 25 15.1938696996 -13 58 42.305035144 7.39 7.61 6.71 5.82 5.13 B1Ia 312 0
11 HD 210121 * 22 08 11.9025501667 -03 31 52.770012247   7.84 7.68     B7II 153 0

    Equat.    Gal    SGal    Ecl

To bookmark this query, right click on this link: simbad:objects in 2017A&A...603L...6H and select 'bookmark this link' or equivalent in the popup menu


2021.01.24-00:35:08

© Université de Strasbourg/CNRS

    • Contact