2007PASJ...59..519A

Query : 2007PASJ...59..519A

2007PASJ...59..519A - Publ. Astron. Soc. Jap., 59, 519-525 (2007/June-0)

First determination of the actinide thorium abundance for a red giant of the Ursa minor dwarf galaxy.

AOKI W., HONDA S., SADAKANE K. and ARIMOTO N.

Abstract (from CDS):

The thorium abundance of the red giant COS 82 in the Ursa Minor dwarf spheroidal galaxy was determined based on the high-resolution spectrum. This is the first detection of actinides in an extragalactic object. A detailed abundance pattern was determined for 12 other neutron-capture elements from atomic number 39 to 68. These elements are significantly over-abundant with respect to other metals, like Fe (> 1 dex), and their abundance pattern agrees well with those of the r-process-enhanced, very metal-poor stars known in the galactic halo, while the metallicity of this object ([Fe/H] ∼ -1.5) is much higher than these field stars ([Fe/H] ∼ -3.0). The results indicate that the mechanism and the astrophysical site that are responsible for neutron-capture elements in COS 82 are similar to that for field r-process-enhanced stars, while the condition of low-mass star formation is quite different. An estimate of the age of this object based on the Th abundance ratio is discussed.

Abstract Copyright: ∼

Journal keyword(s): galaxies: dwarf - nuclear reactions, nucleosynthesis, abundances - stars: abundances - stars: individual: Ursa Minor COS 82 = [V67] 199

Simbad objects: 1

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	Z 318-18	G	15 09 08.0	+67 13 21		13.60	10.6			~	1459	0

Query : 2007PASJ...59..519A

Basic data :

Z 318-18 -- Galaxy

G (2008ApJ,DDO,...)

15 09 08.0 +67 13 21 (Optical) [ ] D 2021ApJ...922..267C

15 08 31.5 +67 24 42 [ ]

104.9662 +44.8009 [ ]

0.056 0.074 [0.078 0.099 ] C 1995AJ....110.2747S

V(km/s) -246.9 [0.1] / z(spectroscopic) -0.000823 [0.000000] / cz -246.80 [0.10] C 2012AJ....144....4M

dSph D 2012AJ....144....4M

32.2333 32.2333 90 (NIR) E 2008MNRAS.389.1924F

B 13.60 [~] D 2005A&A...436..443V

V 10.6 [0.5] D 2012AJ....144....4M

K 8.17 [~] D 2008MNRAS.389.1924F

Overlay

points in this preview

2MASS DSS

All

(CDSPortal)

Send to

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

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

`NAME UMi`	`MCG+11-18-030`	`NAME Ursa Minor Dwarf Galaxy`	`Z 1508.2+6723`
`Anon 1508+67`	`NAME UMi dSph`	`UGC 9749`	`[VDD93] 204`
`DDO 199`	`NAME Ursa Minor`	`UZC J150910.2+671252`	`EQ 1508+674`
`K73 663`	`NAME UMi Galaxy`	`Z 318-18`
`LEDA 54074`	`NAME UMi Dwarf Galaxy`	`Z 319-1`

References (1459 between 1850 and 2026) (Total 1459)
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 :

Data at NED - NASA/IPAC Extragalactic Database : Z 318-18

Link by name to the catalogue in VizieR :

K73 663 UGC 9749

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 2007PASJ...59..519A and select 'bookmark this link' or equivalent in the popup menu