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HD 197037

Coordinates:Sky map20h 39m 32.9601s, +42° 14′ 54.7736″
From Wikipedia, the free encyclopedia
Binary star system in the constellation of Cygnus
HD 197037
Observation data
Epoch J2000      Equinox J2000
ConstellationCygnus[1]
A
Right ascension20h 39m 32.95994s[2]
Declination+42° 14′ 54.7783″[2]
Apparent magnitude (V)6.813[3]
B
Right ascension20h 39m 32.93627s[4]
Declination+42° 14′ 51.1696″[4]
Characteristics
HD 197037 A
Evolutionary stagemain sequence
Spectral typeF7V[5]
HD 197037 B
Spectral typeM[6]
Astrometry
A
Radial velocity (Rv)9.087±0.199[2] km/s
Proper motion (μ)RA: −62.745[2]mas/yr
Dec.: −222.168[2]mas/yr
Parallax (π)30.2286±0.0143 mas[2]
Distance107.90 ± 0.05 ly
(33.08 ± 0.02 pc)
Absolute magnitude (MV)4.26[1]
B
Proper motion (μ)RA: −54.165[4]mas/yr
Dec.: −227.397[4]mas/yr
Parallax (π)30.3173±0.0339 mas[4]
Distance107.6 ± 0.1 ly
(32.98 ± 0.04 pc)
Position (relative to HD 197037 A)[7]
ComponentHD 197037 B
Epoch of observation2013
Angular distance3.676±0.011″
Position angle182.21±0.18°
Projected separation121AU
Details[5]
HD 197037 A
Mass1.063±0.022 M☉
Radius1.105±0.023 R☉
Luminosity1.568±0.074 L☉
Surface gravity (log g)4.37±0.04 cgs
Temperature6137±20[8] K
Metallicity[Fe/H]−0.16±0.03 dex
Rotation19.1d[3]
Age3.408±0.924 Gyr
HD 197037 B
Mass0.3412+0.0098
−0.0477[7] M☉
Radius0.16[9] R☉
Luminosity0.01[10] L☉
Temperature4,766[9] K
Other designations
BD+41 3845,HIP 101948,LTT 16037,NLTT 49662,TYC 3161-126-1,2MASS J20393296+4214549[11]
Database references
SIMBADdata

HD 197037 is abinary star system. Its primary or visible star, HD 197037 A, is aF-type main-sequence star. Its surface temperature is 6150±34K. HD 197037 A is depleted in heavy elements compared to theSun, with ametallicity Fe/H index of −0.16±0.03, but is younger at an age of 3.408±0.924 billion years.[5]

A multiplicity survey detected ared dwarf stellar companion HD 197037 B in 2016, at a projected separation of 121AU.[7] The existence of other stellar companions at projected separations from 1.62 to 45.26 AU was excluded.[5]

Planetary system

[edit]

In 2012 one planet, namedHD 197037 Ab, was discovered on a wide, eccentric orbit by theradial velocity method.[12]

Another planet in the system was initially suspected, but the radial velocity signal was later attributed to the stellar companion HD 197037 B.[7]

The HD 197037 A planetary system[12]
Companion
(in order from star)		MassSemimajor axis
(AU)		Orbital period
(days)		EccentricityInclinationRadius
b≥0.79±0.05 MJ2.07±0.051035.7±130.22±0.07——

References

[edit]
  1. ^abAnderson, E.; Francis, Ch. (2012), "XHIP: An extended hipparcos compilation",Astronomy Letters,38 (5): 331,arXiv:1108.4971,Bibcode:2012AstL...38..331A,doi:10.1134/S1063773712050015
  2. ^abcdefVallenari, A.; et al. (Gaia collaboration) (2023)."Gaia Data Release 3. Summary of the content and survey properties".Astronomy and Astrophysics.674: A1.arXiv:2208.00211.Bibcode:2023A&A...674A...1G.doi:10.1051/0004-6361/202243940.S2CID 244398875. Gaia DR3 record for this source atVizieR.
  3. ^abFrance, Kevin; Arulanantham, Nicole; Fossati, Luca; Lanza, Antonino F.; Loyd, R. O. Parke; Redfield, Seth; Schneider, P. Christian (2018), "Far-ultraviolet Activity Levels of F, G, K, and M Dwarf Exoplanet Host Stars",The Astrophysical Journal Supplement Series,239 (1): 16,arXiv:1809.07342,Bibcode:2018ApJS..239...16F,doi:10.3847/1538-4365/aae1a3,S2CID 119368148
  4. ^abcdeVallenari, A.; et al. (Gaia collaboration) (2023)."Gaia Data Release 3. Summary of the content and survey properties".Astronomy and Astrophysics.674: A1.arXiv:2208.00211.Bibcode:2023A&A...674A...1G.doi:10.1051/0004-6361/202243940.S2CID 244398875. Gaia DR3 record for this source atVizieR.
  5. ^abcdWittrock, Justin M.; Kane, Stephen R.; Horch, Elliott P.; Howell, Steve B.; Ciardi, David R.; Everett, Mark E. (2017), "Exclusion of Stellar Companions to Exoplanet Host Stars",The Astronomical Journal,154 (5): 184,arXiv:1709.05315,Bibcode:2017AJ....154..184W,doi:10.3847/1538-3881/aa8d69,S2CID 55789971
  6. ^Bowler, Brendan P. (2016), "Imaging Extrasolar Giant Planets",Publications of the Astronomical Society of the Pacific,128 (968) 102001,arXiv:1605.02731,Bibcode:2016PASP..128j2001B,doi:10.1088/1538-3873/128/968/102001,S2CID 118614968
  7. ^abcdGinski, C.; Mugrauer, M.; Seeliger, M.; Buder, S.; Errmann, R.; Avenhaus, H.; Mouillet, D.; Maire, A.-L.; Raetz, S. (2016), "A lucky imaging multiplicity study of exoplanet host stars – II",Monthly Notices of the Royal Astronomical Society,457 (2):2173–2191,arXiv:1601.01524,Bibcode:2016MNRAS.457.2173G,doi:10.1093/mnras/stw049,S2CID 53626523
  8. ^Stassun, Keivan G.; Collins, Karen A.; Gaudi, B. Scott (2017), "Accurate Empirical Radii and Masses of Planets and Their Host Stars with Gaia Parallaxes",The Astronomical Journal,153 (3): 136,arXiv:1609.04389,Bibcode:2017AJ....153..136S,doi:10.3847/1538-3881/aa5df3,S2CID 119219062
  9. ^abAdibekyan, V.; Santos, N. C.; Demangeon, O. D. S.; Faria, J. P.; Barros, S. C. C.; Oshagh, M.; Figueira, P.; Delgado Mena, E.; Sousa, S. G.; Israelian, G.; Campante, T.; Hakobyan, A. A. (2021), "Stellar clustering and orbital architecture of planetary systems",Astronomy and Astrophysics,649: A111,arXiv:2102.12346,Bibcode:2021A&A...649A.111A,doi:10.1051/0004-6361/202040201
  10. ^Hardegree-Ullman, Kevin K.; Apai, Dániel; Bergsten, Galen J.; Pascucci, Ilaria; López-Morales, Mercedes (2023), "Bioverse: A Comprehensive Assessment of the Capabilities of Extremely Large Telescopes to Probe Earth-like O2 Levels in Nearby Transiting Habitable-zone Exoplanets",The Astronomical Journal,165 (6): 267,arXiv:2304.12490,Bibcode:2023AJ....165..267H,doi:10.3847/1538-3881/acd1ec
  11. ^"HD 197037".SIMBAD.Centre de données astronomiques de Strasbourg. Retrieved2021-01-19.
  12. ^abRobertson, Paul; Endl, Michael; Cochran, William D.; MacQueen, Phillip J.; Wittenmyer, Robert A.; Horner, J.; Brugamyer, Erik J.; Simon, Attila E.; Barnes, Stuart I.; Caldwell, Caroline (2012), "THE McDONALD OBSERVATORY PLANET SEARCH: NEW LONG-PERIOD GIANT PLANETS AND TWO INTERACTING JUPITERS IN THE HD 155358 SYSTEM",The Astrophysical Journal,749 (1): 39,arXiv:1202.0265,Bibcode:2012ApJ...749...39R,doi:10.1088/0004-637X/749/1/39,S2CID 59273311


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