2020RNAAS...4..237B

Query : 2020RNAAS...4..237B

2020RNAAS...4..237B - Research Notes of the AAS, 4, 237 (2020/December-0)

Detection of a Planet in 2M1938+4603 Revisited.

BARAN A.S. and SILVOTTI R.

Abstract (from CDS):

The Observed-minus-Calculated diagram shows a stability of a period being analyzed. In case of binary system, any nonlinear O - C variation indicates an orbital period variation that can be caused by e.g., mass loss or mass transfer between components (physical change), additional component(s) to the system (apparent change only). Baran et al. reported a sinusoidal variation of the O - C of 2M 1938+4603 and interpreted it as a circumbinary planet. We analyzed the newest and most reliable release of the Kepler data of 2M 1938+4603 and by using our newest approach we removed two main sources that could cause the variation not to be intrinsic to 2M 1938+4603. We removed significant signal not associated with binarity and folded eclipses to increase their cadences. Consequently, we lowered rms of the O - C diagram by a factor of six confirming the sinusoidal variation reported by Baran et al. and making it even more convincing now.

Abstract Copyright: © 2020. The American Astronomical Society. All rights reserved.

Journal keyword(s): Exoplanet detection methods - Space observatories - Pulsating variable stars - B subdwarf stars - Eclipsing binary minima timing method

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 Kepler-451 HS* 19 38 32.6123816016 +46 03 59.135231952   12.17 12.69 12.46 12.399 sdB+dM 103 0

Query : 2020RNAAS...4..237B

Basic data :
Kepler-451 -- Hot Subdwarf
Other object types: otypes_help 		* (TYC,GSC2.3,...), HS* (2010MNRAS), V* (2012AJ,ASAS,...), EB* (2009AcA), SB* (2015A&A), blu (2019A&A), Opt (ATO,LAMOST), Ce* (2011A&A), ** (2010MNRAS), Er* (2016ApJ), Em* (2023ApJS), Pu* (2010MNRAS), NIR (2MASS)
ICRS coord. (ep=J2000) : 		19 38 32.6123816016 +46 03 59.135231952 (Optical) [ 0.0278 0.0316 90 ] A 2020yCat.1350....0G
FK4 coord. (ep=B1950 eq=1950) : 		19 37 01.8042587508 +45 57 04.628292312 [ 0.0278 0.0316 90 ]
Gal coord. (ep=J2000) : 		079.0187636937466 +11.6742932016706 [ 0.0278 0.0316 90 ]
Proper motions mas/yr : 		5.225 -4.405 [0.037 0.042 90] A 2020yCat.1350....0G
Radial velocity / Redshift / cz : 		V(km/s) 26.61 [0.7] / z(spectroscopic) 0.000089 [0.000002] / cz 26.61 [0.70]
   (Opt) A 2023ApJS..264...17Z
Parallaxes (mas): 		2.441 [0.0316] A 2020yCat.1350....0G
Spectral type: 		sdB+dM D 2010MNRAS.408L..51O
Fluxes (10) :
B 12.17 [0.10] D 2000A&A...355L..27H
V 12.69 [0.24] D 2000A&A...355L..27H
R 12.46 [0.08] E 2009yCat.1315....0Z
G 12.114145 [0.003894] C 2020yCat.1350....0G
I 12.399 [~] D 2009AcA....59...33P
J 12.757 [0.022] C 2003yCat.2246....0C
H 12.889 [0.020] C 2003yCat.2246....0C
K 12.955 [0.029] C 2003yCat.2246....0C
g 11.964 [~] D 2012AJ....143..101M
i 12.72 [~] D 2012AJ....143..101M
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Hierarchy : number of linked objects
whatever the membership probability is (see description here ) :

: 1
: 3 		: 1605 Display criteria :

Identifiers (20) :
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TYC 3556-3568-1 GSC 03556-03568 LAMOST J193832.60+460359.1 UCAC3 273-158867
ASAS J193833+4604.0 Kepler-451 2MASS J19383260+4603591 USNO-B1.0 1360-00318562
ATO J294.6359+46.0664 KIC 9472174 NSVS 5629361 EQ J1938+4603
GSC2.3 N2JF000803 LAMOST J193832.61+460359.1 1SWASP J193832.60+460359.1 Gaia DR3 2080063931448749824
GSC2 N0303123803 LAMOST J193832.62+460359.1 TIC 271164763 Gaia DR2 2080063931448749824

References (103 between 1850 and 2026) (Total 103)
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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Collections of Measurements Description of Measurements

Velocities : 11    Distance : 3    Var : 8    Rot : 1    Fe/H : 7    Plx : 2    PM : 2    SpT : 11   

   

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TYC 3556-3568-1 GSC 03556-03568 KIC 9472174 2MASS J19383260+4603591 UCAC3 273-158867
USNO-B1.0 1360-00318562 Gaia DR3 2080063931448749824 Gaia DR2 2080063931448749824

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