2021AJ....162..131M

Query : 2021AJ....162..131M

2021AJ....162..131M - Astron. J., 162, 131-131 (2021/October-0)

2m17091769+3127589: a mass-transfer binary with an extreme mass ratio.

MILLER A., KOUNKEL M., SUN M., DIXON D., BOGGIO C., COVEY K.R., STASSUN K.G. and MATHIEU R.

Abstract (from CDS):

We present the orbital solution of a peculiar double-lined spectroscopic and eclipsing binary system, 2M17091769+3127589. This solution was obtained by a simultaneous fit of both APOGEE radial velocities and TESS and ASAS-SN light curves to determine masses and radii. This system consists of an M=0.256–0.006+0.010M☉, R=3.961–0.032+0.049R☉ red giant and a hotter M=1.518–0.031+0.057M☉, R=2.608–0.321+0.034R☉ subgiant. Modeling with the MESA evolutionary codes indicates that the system likely formed 5.26 Gyrs ago, with a M = 1.2 M☉ primary that is now the system's red giant and a M = 1.11 M☉ secondary that is now a more massive subgiant. Due to Roche-lobe overflow as the primary ascends the red giant branch, the more evolved "primary" (i.e., originally the more massive star of the pair) is now only one sixth as massive as the "secondary." Such a difference between the initial and the current mass ratio is one of the most extreme detected so far. Evolutionary modeling suggests the system is still engaged in mass transfer, at a rate of {dot}M∼10–9M☉/yr, and it provides an example of a less evolved precursor to some of the systems that consist of white dwarfs and blue stragglers.

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

Journal keyword(s): Eclipsing binary stars - Spectroscopic binary stars - Blue straggler stars - Light curves - Radial velocity - Stellar mass loss

Simbad objects: 1

goto Full paper

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 ROTSE1 J170917.64+312759.7 Ce* 17 09 17.6943796608 +31 27 59.005844676   11.82 11.50     kA8hA9mF2 13 0

Query : 2021AJ....162..131M

Basic data :
ROTSE1 J170917.64+312759.7 -- Cepheid Variable
Other object types: otypes_help 		* (2022AJ,TYC,...), Ce* (2000AJ), V* (ROTSE1), NIR (2MASS), Opt (LAMOST)
ICRS coord. (ep=J2000) : 		17 09 17.6943796608 +31 27 59.005844676 (Optical) [ 0.0111 0.0119 90 ] A 2020yCat.1350....0G
FK4 coord. (ep=B1950 eq=1950) : 		17 07 23.7893160161 +31 31 43.849310211 [ 0.0111 0.0119 90 ]
Gal coord. (ep=J2000) : 		054.0280410114553 +34.4201037797381 [ 0.0111 0.0119 90 ]
Proper motions mas/yr : 		7.143 -18.749 [0.015 0.016 90] A 2020yCat.1350....0G
Parallaxes (mas): 		1.014 [0.0147] A 2020yCat.1350....0G
Spectral type: 		kA8hA9mF2 D 2023ApJS..266...14T
Fluxes (6) :
B 11.82 [0.08] D 2000A&A...355L..27H
V 11.50 [0.09] D 2000A&A...355L..27H
G 11.362339 [0.003043] C 2020yCat.1350....0G
J 10.421 [0.021] C 2003yCat.2246....0C
H 10.044 [0.024] C 2003yCat.2246....0C
K 9.936 [0.018] C 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

Identifiers (10) :
An access of full data is available using the icon Vizier near the identifier of the catalogue

TYC 2591-631-1 LAMOST J170917.69+312759.0 TIC 21862725 Gaia DR1 1334192626559876096
AP J17091769+3127589 2MASS J17091769+3127589 Gaia DR2 1334192630855935232
BSD 61-1303 ROTSE1 J170917.64+312759.7 Gaia DR3 1334192630855935232

References (13 between 1850 and 2026) (Total 13)
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

Distance : 2    Var : 3    Fe/H : 5    Plx : 3    PM : 2    SpT : 2   

   

External archives :

Link by name to the catalogue in VizieR :

TYC 2591-631-1 AP J17091769+3127589 2MASS J17091769+3127589 Gaia DR2 1334192630855935232 Gaia DR3 1334192630855935232
Gaia DR1 1334192626559876096

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 2021AJ....162..131M and select 'bookmark this link' or equivalent in the popup menu