1995A&A...296..139C

Query : 1995A&A...296..139C

1995A&A...296..139C - Astronomy and Astrophysics, volume 296139-144 (1995/4-1)

γ Circinus: a young visual binary with pre-main-sequence component(s)?

CARETTE E., DE GREVE J.P., VAN RENSBERGEN W. and LAMPENS P.

Abstract (from CDS):

An analysis of the evolutionary stage of the bright, close visual pair γ Cir is given. From the observed spectral types and apparent visual magnitudes of the components and the comparison with stellar evolutionary computations we deduce that the members of this system, discovered in 1835, cannot both be evolving rightward in the Hertzprung-Russell diagram: at least the F8 component is a pre-main sequence object. On the other hand, a re-analysis of all available astrometric data shows that the observations can be fitted either by rectilinear or elliptical motion. Very accurate data collected during several more years would be needed to distinguish between both. However, should the binary nature be confirmed in the future, then - according to considerations based on stellar evolution - γ Cir appears to be a pre-main sequence binary system.

Abstract Copyright: ∼

Journal keyword(s): stars: binaries: visual - stars: fundamental parameters - Hertzsprung-Russell (HR) diagram - stars: pre-main sequence

Simbad objects: 1

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 * gam Cir ** 15 23 22.64294 -59 19 14.8131 4.35     6.14   B3/4V+F8V 55 0

Query : 1995A&A...296..139C

Basic data :
* gam Cir -- Double or Multiple Star
Other object types: otypes_help 		* (*,ALS,...), ** (CCDM,**,...), MIR (AKARI,WISEA,...), NIR (DENIS,2MASS), Be* (2016AJ), V* (V*), UV (TD1)
ICRS coord. (ep=J2000) : 		15 23 22.64294 -59 19 14.8131 (Optical) [ 6.76 6.14 90 ] A 2007A&A...474..653V
FK4 coord. (ep=B1950 eq=1950) : 		15 19 22.53955 -59 08 33.2592 [ 6.76 6.14 90 ]
Gal coord. (ep=J2000) : 		321.24491931 -01.96299394 [ 6.76 6.14 90 ]
Proper motions mas/yr : 		-12.97 -34.24 [0.77 0.70 0] A 2007A&A...474..653V
Radial velocity / Redshift / cz : 		V(km/s) -16.90 [1.78] / z(~) -0.000056 [0.000006] / cz -16.90 [1.78]
   B 2007AN....328..889K
Parallaxes (mas): 		7.27 [0.81] A 2007A&A...474..653V
Spectral type: 		B3/4V+F8V C 2014yCat....1.2023S
Fluxes (5) :
U 4.35 [~] D 2003AJ....125.2531R
R 6.14 [0.54] E 2012yCat.1322....0Z
J 3.54 [0.23] D 2003yCat.2246....0C
H 3.08 [0.21] D 2003yCat.2246....0C
K 3.04 [0.25] D 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 ) :

: 1
: 2 		: 1 Display criteria :

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

CCDM J15234-5919AB GC 20663 PPM 343673 UCAC4 154-150766
* gam Cir GCRV 8891 ROT 2171 V* gam Cir
** HJ 4757 GEN# +1.00136415 SAO 242463 WDS J15234-5919AB
AKARI-IRC-V1 J1523226-591914 HIC 75323 SKY# 27866 WISEA J152322.71-591913.6
ALS 15011 HIP 75323 TD1 18149 WISE J152322.65-591914.1
CPC 20 4823 HR 5704 TIC 46705199
CPD-58 5908 IDS 15154-5858 AB UBV 13208
DENIS J152322.6-591915 2MASS J15232267-5919141 UCAC3 62-330397

References (55 between 1850 and 2026) (Total 55)
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 : 6    Rot : 1    Plx : 2    PM : 3    SpT : 2   

   

External archives :

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

Link by name to the catalogue in VizieR :

CCDM J15234-5919AB AKARI-IRC-V1 J1523226-591914 ALS 15011 CPD-58 5908 DENIS J152322.6-591915
HIC 75323 HIP 75323 HR 5704 2MASS J15232267-5919141 PPM 343673
SAO 242463 TD1 18149 UCAC3 62-330397 UCAC4 154-150766 V* gam Cir
WDS J15234-5919AB WISEA J152322.71-591913.6 WISE J152322.65-591914.1

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 1995A&A...296..139C and select 'bookmark this link' or equivalent in the popup menu