2019IBVS.6270....1N

Query : 2019IBVS.6270....1N

2019IBVS.6270....1N - IAU Inform. Bull. Var. Stars, 6270, 1-1 (2019/April-0)

V1097 Her - A W-Type Overcontact Eclipsing Binary.

NELSON R. and RUSSELL R.

Abstract (from CDS):

V1097 Her, an overcontact (W-type) eclipsing binary, has a short period, a relatively low degree of contact (or fill-out parameter), and an increasing period. It has now been classified: for the more luminous star a spectral type of F8.5V±1 has been determined. B,V,Ic light curves and, for the first time, radial velocity curves for the overcontact binary V1097 Her have been obtained; these have been subjected to a Wilson-Devinney analysis, yielding fundamental parameters; in particular masses of 0.41 ±0.01 and 1.11 ±0.02 M_☉and luminosities of 0.77 ±0.01 and 1.75 ±0.03 L_☉respectively. The distance estimate of r = 237 ±11 pc is consistent with the Gaia value of r = 250.3 ±1.4 pc (Bailer-Jones et al., 2018; Gaia Collaboration, 2018). A period analysis, again believed to be the first ever, has been undertaken, revealing a constant rate of period increase of dP/dt = (1.85 ±0.11)×10^{-7} d/yr.

Abstract Copyright: © Copyright: Konkoly Observatory, 2019

Journal keyword(s):

Status at CDS : Objects in title, abstract, text, figures, and all or part of small table(s) being processed in SIMBAD.

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	V* V1097 Her	EB*	17 33 27.9766609920	+26 55 47.945811828		11.69	11.04	10.747	10.418	~	20	0

Query : 2019IBVS.6270....1N

Basic data :

V* V1097 Her -- Eclipsing Binary

EB* (2000AJ,[GGM2006]), * (TYC,GSC,...), V* (ASAS,ROTSE1,...), NIR (2MASS)

17 33 27.9766609920 +26 55 47.945811828 (Optical) [ 0.0079 0.0101 90 ] A 2020yCat.1350....0G

17 31 27.8795192779 +26 57 49.707151578 [ 0.0079 0.0101 90 ]

050.5820861492530 +28.1181709241821 [ 0.0079 0.0101 90 ]

9.697 -33.848 [0.010 0.013 90] A 2020yCat.1350....0G

4.0179 [0.0116] A 2020yCat.1350....0G

B 11.69 [0.07] D 2000A&A...355L..27H

V 11.04 [0.06] D 2000A&A...355L..27H

R 10.747 [~] D 2012AJ....143...99T

G 11.085060 [0.008436] C 2020yCat.1350....0G

I 10.418 [~] D 2012AJ....143...99T

J 9.889 [0.024] C 2003yCat.2246....0C

H 9.591 [0.028] C 2003yCat.2246....0C

K 9.510 [0.019] C 2003yCat.2246....0C

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`TYC 2083-1870-1`	`2MASS J17332797+2655479`	`TIC 298498697`	`Gaia DR2 4594961454434214144`
`ASAS J173328+2655.8`	`NSVS 8002361`	*`V V1097 Her`**	`Gaia DR3 4594961454434214144`
`GSC 02083-01870`	`ROTSE1 J173327.94+265547.5`	`[GGM2006] 8002360`	`Gaia DR1 4594961450136753408`

References (20 between 1850 and 2026) (Total 20)
Simbad bibliographic survey began in 1850 for stars (at least bright stars) and in 1983 for all other objects (outside the solar system).

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`TYC 2083-1870-1`	`GSC 02083-01870`	`2MASS J17332797+2655479`	*`V V1097 Her`**	`Gaia DR2 4594961454434214144`
`Gaia DR3 4594961454434214144`	`Gaia DR1 4594961450136753408`

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