2017ApJ...844L..12L

Query : 2017ApJ...844L..12L

2017ApJ...844L..12L - Astrophys. J., 844, L12-L12 (2017/July-3)

J-type carbon stars: a dominant source of ¹⁴N-rich presolar SiC grains of type AB.

LIU N., STEPHAN T., BOEHNKE P., NITTLER L.R., ALEXANDER C.M.O'D., WANG J., DAVIS A.M., TRAPPITSCH R. and PELLIN M.J.

Abstract (from CDS):

We report Mo isotopic data of 27 new presolar SiC grains, including 12 ¹⁴N-rich AB (¹⁴N/¹⁵N > 440, AB2) and 15 mainstream (MS) grains, and their correlated Sr and Ba isotope ratios when available. Direct comparison of the data for the MS grains, which came from low-mass asymptotic giant branch (AGB) stars with large s-process isotope enhancements, with the AB2 grain data demonstrates that AB2 grains show near-solar isotopic compositions and lack s-process enhancements. The near-normal Sr, Mo, and Ba isotopic compositions of AB2 grains clearly exclude born-again AGB stars, where the intermediate neutron-capture process (i-process) takes place, as their stellar source. On the other hand, low-mass CO novae and early R- and J-type carbon stars show ¹³C and ¹⁴N excesses but no s-process enhancements and are thus potential stellar sources of AB2 grains. Because both early R-type carbon stars and CO novae are rare objects, the abundant J-type carbon stars (10%-15% of all carbon stars) are thus likely to be a dominant source of AB2 grains.

Journal keyword(s): circumstellar matter - meteorites, meteors, meteoroids - nuclear reactions, nucleosynthesis, abundances - stars: AGB and post-AGB - stars: carbon - stars: dwarf novae - stars: dwarf novae

Errata: erratum vol. 873, art. L8 (2019)

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	V* V4334 Sgr	CV*	17 52 32.69352	-17 41 08.0160						F2Ia	390	0

Query : 2017ApJ...844L..12L

Basic data :

V* V4334 Sgr -- Cataclysmic Binary

CV* (), PN (DPV,PK,...), V* (V*,AAVSO), * (GSC2,[KK98b]), MIR (WISEA,WISE), pA* (2007A&A), NIR (2MASS)

17 52 32.69352 -17 41 08.0160 (Near-IR) [ 60 60 90 ] C 2003yCat.2246....0C

17 49 37.62890 -17 40 29.0280 [ 60 60 90 ]

010.47946837 +04.41476908 [ 60 60 90 ]

F2Ia C 1997BSAO...44....5K

J 11.555 [0.022] C 2003yCat.2246....0C

H 8.693 [0.033] C 2003yCat.2246....0C

K 6.372 [0.018] C 2003yCat.2246....0C

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

`2MASS J17523269-1741080`	`NAME Sakurai's Object`	`PN G010.4+04.4`	`WISE J175232.69-174107.8`
`DPV 1`	`NAME Sakurai's Var.`	`TIC 206750096`	`[KK98b] 1`
`GSC2 S2202011182877`	`NAME Sakurai Object`	*`V V4334 Sgr`**	`AAVSO 1746-17`
`NAME Novalike Var in Sgr`	`PK 010+04 2`	`WISEA J175232.69-174107.7`

References (390 between 1850 and 2026) (Total 390)
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

Observing logs

External archives :

Data at NED - NASA/IPAC Extragalactic Database : V* V4334 Sgr

Link by name to the catalogue in VizieR :

2MASS J17523269-1741080 PN G010.4+04.4 V* V4334 Sgr WISEA J175232.69-174107.7 WISE J175232.69-174107.8

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 2017ApJ...844L..12L and select 'bookmark this link' or equivalent in the popup menu