2021ApJS..253...58Q

Query : 2021ApJS..253...58Q

2021ApJS..253...58Q - Astrophys. J., Suppl. Ser., 253, 58-58 (2021/April-0)

Precise ages of field stars from white dwarf companions in Gaia DR2.

QIU D., TIAN H.-J., WANG X.-D., NIE J.-L., VON HIPPEL T., LIU G.-C., FOUESNEAU M. and RIX H.-W.

Abstract (from CDS):

We analyze 4050 wide binary star systems involving a white dwarf (WD) and usually a main-sequence (MS) star, drawn from the large sample assembled by Tian et al. Using the modeling code BASE-9, we determine the system's ages, the WD progenitors' zero-age MS masses, the extinction values (AV), and the distance moduli. Discarding the cases with poor age convergences, we obtain ages for 3551 WDs, with a median age precision of στ/τ = 20%, and system ages typically in the range of 1-6 Gyr. We validated these ages against the very few known clusters and through cross validation of 236 WD-WD binaries. Under the assumption that the components are coeval in a binary system, this provides precise age constraints on the usually low-mass MS companions, mostly inaccessible by any other means.

Abstract Copyright: © 2021. The American Astronomical Society. All rights reserved.

Journal keyword(s): Stellar ages - Wide binary stars - Field stars - Markov chain Monte Carlo - Bayesian statistics - Main sequence stars - White dwarf stars - Zero-age main sequence stars - Stellar evolutionary tracks - Initial mass function - Photometry

VizieR on-line data: <Available at CDS (J/ApJS/253/58): table2.dat table4.dat>

Status at CDS : All or part of tables of objects could be ingested in SIMBAD with priority 2.

Simbad objects: 17

goto Full paper

goto View the references in ADS

Number of rows : 17
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 SDSS J082839.87+194343.1 WD* 08 28 39.8883906960 +19 43 43.269257208   17.7   18.1   DA 19 0
2 EGGR 59 WD* 08 39 45.5747385840 +20 00 15.827498388   18.01 17.85 18.4   DAH 67 0
3 EGGR 60 WD* 08 39 47.2132332384 +19 46 11.963822952   18.4 18.23 18.9   DA 48 0
4 NGC 2632 OpC 08 39 58.4 +19 36 33           ~ 1733 0
5 LB 5959 WD* 08 40 13.3026682896 +18 43 26.373596232   18.9 18.15 18.6   DA 60 1
6 Cl* NGC 2632 DPN 5 WD* 08 43 21.9954726168 +20 43 30.246289104           DA 36 1
7 LB 8648 WD* 08 46 01.9035697512 +18 30 48.545909388   18.0       DA 35 0
8 LB 6339 WD* 08 51 19.9088482234 +11 48 40.816076731 17.603 18.499 18.612     DAwk 23 0
9 NGC 2682 OpC 08 51 23.5 +11 48 54           ~ 2528 0
10 Cl Melotte 111 OpC 12 11 54.9 +25 16 36           ~ 520 0
11 Ton 607 WD* 12 18 56.1792130992 +25 45 57.178803744   16.57 16.47     DA 40 0
12 NGC 6674 AG? 18 38 33.889 +25 22 30.39   13.7       ~ 119 0
13 PSO J288.7652-16.0614 WD* 19 15 03.6713967840 -16 03 41.044869144           D 13 0
14 PSO J289.0572-16.3370 WD* 19 16 13.7307143040 -16 20 12.849798768           DA 12 0
15 NGC 6774 OpC 19 16 17.6 -16 20 45           ~ 258 0
16 PSO J289.6844-15.8988 WD* 19 18 44.2589555904 -15 53 55.622818644           DA 11 0
17 SDSS J235329.30+101614.2 WD* 23 53 29.2916463432 +10 16 14.167205904           DC 6 0

To bookmark this query, right click on this link: simbad:objects in 2021ApJS..253...58Q and select 'bookmark this link' or equivalent in the popup menu