1997PASP..109.1351M

Query : 1997PASP..109.1351M

1997PASP..109.1351M - Publ. Astron. Soc. Pac., 109, 1351-1358 (1997/December-0)

A photometric study of the peculiar binary star V Sagittae.

MADER J. and SHAFTER A.

Abstract (from CDS):

High-speed photometric UBV observations of the nova-like variable V Sagittae conducted during 1994 and 1995 are reported. The data consist of a total of 152 hours of observations, covering the entire 12.3 hr orbital period. Analysis of the photometry using the new Wilson eclipsing-binary code suggests a model where mass is being transferred from a 0.86 M_☉, evolved, Helium-burning star, which fills its Roche lobe, to a 3.48 M_☉ evolved companion. Thirteen new timings of primary eclipse in conjunction with published timings from 1946 to 1996 show that the orbital period is changing at a rate {dot}P = -5.1(±1.0) ×10^{-10}. We derive a lower limit to the mass loss rate from the primary star of {dot}M_1 ∼-4.4(±0.1) ×10^{-7} M_☉∼yr^{-1}. V∼Sge appears to be in a short-lived evolutionary state with a lifetime of ∼2 ×10^6∼yr.(c) Astronomical Society of the Pacific

Abstract Copyright: ∼

Journal keyword(s): Stars

Simbad objects: 1

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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* V Sge	CV*	20 20 14.6911060272	+21 06 10.437106644		11.27	11.22	11.54		Be	224	0

Query : 1997PASP..109.1351M

Basic data :

V* V Sge -- Cataclysmic Binary

* (CSI,GCRV,...), Em* (HBHA,Hen,...), V* (AN,V*,...), SB* (SBC7,SBC9), CV* (2020MNRAS), X (2E), NIR (2MASS)

20 20 14.6911060272 +21 06 10.437106644 (Optical) [ 0.0135 0.0126 90 ] A 2020yCat.1350....0G

20 18 02.0087348697 +20 56 39.016871318 [ 0.0135 0.0126 90 ]

062.0529474849898 -08.6020507350489 [ 0.0135 0.0126 90 ]

-2.133 -6.489 [0.016 0.015 90] A 2020yCat.1350....0G

V(km/s) -5.0 [~] / z(~) -0.000017 [~] / cz -5.00 [~] E 1995A&AS..114..269D

0.331 [0.0206] A 2020yCat.1350....0G

Be E 1955BOTT....2m..19I

B 11.27 [0.07] D 2000A&A...355L..27H

V 11.22 [0.09] D 2000A&A...355L..27H

R 11.54 [0.12] E 2009yCat.1315....0Z

G 11.163938 [0.007779] C 2020yCat.1350....0G

J 10.315 [0.021] C 2003yCat.2246....0C

H 10.113 [0.027] C 2003yCat.2246....0C

K 9.811 [0.022] C 2003yCat.2246....0C

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`2E 4361`	`HBHA 2205-01`	`TIC 288838566`	`[KW97] 45-28`
`AN 21.1902`	`Hen 3-1879`	`TYC 1643-1764-1`	`AAVSO 2015+20`
`CSI+20-20180`	`2MASS J20201469+2106104`	`UCAC2 39388849`	`Gaia DR3 1829046152689890560`
`2E 2018.0+2056`	`PLX 4846.01`	`UCAC3 223-257008`	`Gaia DR1 1829046148381175552`
`GCRV 70890`	`SBC7 807`	*`V V Sge`**	`Gaia DR2 1829046152689890560`
`GSC 01643-01764`	`SBC9 1229`	`WEB 18084`

References (224 between 1850 and 2026) (Total 224)
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`2E 4361`	`GSC 01643-01764`	`2MASS J20201469+2106104`	`TYC 1643-1764-1`	`UCAC2 39388849`
`UCAC3 223-257008`	*`V V Sge`**	`Gaia DR3 1829046152689890560`	`Gaia DR1 1829046148381175552`	`Gaia DR2 1829046152689890560`

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