Dr John Barnes

Further Study of Starspot Activity and Measurement of Differential Rotation for SZ Piscium (2024-12)
Xiang, Yue; Gu, Shenghong; Collier Cameron, A.; Barnes, J.R. and Cao, Dongtao
The Astrophysical Journal, 976, Article 217(2)

Identifying activity induced RV periodicities and correlations using central line moments (2024-10)
Barnes, J. R.; Jeffers, S. V.; Haswell, C. A.; Damasso, M.; Del Sordo, F.; Liebing, F.; Perger, M. and Anglada-Escudé, G.
Monthly Notices of the Royal Astronomical Society, 534(2) (pp. 1257-1282)

The variable magnetic field of V889 Her and the challenge of detecting exoplanets around young Suns using Gaussian process regression (2024-03)
Brown, E L; Marsden, S C; Jeffers, S V; Heitzmann, A; Barnes, J R and Folsom, C P
Monthly Notices of the Royal Astronomical Society, 528(3) (pp. 4092-4114)

RedDots: Limits on habitable and undetected planets orbiting nearby stars GJ 832, GJ 674, and Ross 128 (2024)
Liebing, F.; Jeffers, S. V.; Gorrini, P.; Haswell, C. A.; Dreizler, S.; Barnes, J. R.; Hartogh, C.; Koseleva, V.; Del Sordo, F.; Amado, P. J.; Caballero, J. A.; López-González, M. J.; Morales, N.; Reiners, A.; Ribas, I.; Quirrenbach, A.; Rodríguez, E.; Tal-Or, L. and Tsapras, Y.
Astronomy & Astrophysics, 690, Article A234

Combing the Brown Dwarf Desert with Gaia DR3 (2023-12)
Stevenson, Adam T.; Haswell, Carole A.; Barnes, John R. and Barstow, Joanna K.
Monthly Notices of the Royal Astronomical Society, 526(4) (pp. 5155-5171)

DMPP-4: candidate sub-Neptune mass planets orbiting a naked-eye star (2023-10)
Barnes, J. R.; Standing, M. R.; Haswell, C. A.; Staab, D.; Doherty, J. P. J.; Waller-Bridge, M.; Fossati, L.; Soto, M.; Anglada-Escudé, G.; Llama, J.; McCune, C. and Lewis, F. W.
Monthly Notices of the Royal Astronomical Society, 524(4) (pp. 5196-5212)

DMPP-3: confirmation of short-period S-type planet(s) in a compact eccentric binary star system, and warnings about long-period RV planet detections (2023-05-23)
Stevenson, Adam T.; Haswell, Carole A.; Barnes, John; Barstow, Joanna K. and Ross, Zachary
Monthly Notices of the Royal Astronomical Society(523) (pp. 189-207)

A machine learning approach for correcting radial velocities using physical observables (2023)
Perger, M.; Anglada-Escudé, G.; Baroch, D.; Lafarga, M.; Ribas, I.; Morales, J. C.; Herrero, E.; Amado, P. J.; Barnes, J.R.; Caballero, J. A.; Jeffers, S. V.; Quirrenbach, A. and Reiners, A.
Astronomy & Astrophysics, 672, Article A118

A Method to Achieve High Dynamic Range in a CMOS Image Sensor Using Interleaved Row Readout (2022-11-15)
Wocial, Thomas; Stefanov, Konstantin D.; Martin, William E.; Barnes, John R. and Jones, Hugh R.A.
IEEE Sensors Journal, 22(22) (pp. 21619-21627)

Detailed stellar activity analysis and modelling of GJ 832 (2022-08)
Gorrini, P.; Astudillo-Defru, N.; Dreizler, S.; Damasso, M.; Díaz, R. F.; Bonfils, X.; Jeffers, S. V.; Barnes, J. R.; Del Sordo, F.; Almenara, J.-M.; Artigau, E.; Bouchy, F.; Charbonneau, D.; Delfosse, X.; Doyon, R.; Figueira, P.; Forveille, T.; Haswell, C. A.; López-González, M. J.; Melo, C.; Mennickent, R. E.; Gaisné, G.; Morales, N. Morales; Murgas, F.; Pepe, F.; Rodríguez, E.; Santos, N. C.; Tal-Or, L.; Tsapras, Y. and Udry, S.
Astronomy & Astrophysics, 664, Article A64

The CARMENES search for exoplanets around M dwarfs - Benchmarking the impact of activity in high-precision radial velocity measurements (2022-07-08)
Jeffers, S. V.; Barnes, J.R.; Schöfer, P.; Quirrenbach, A.; Zechmeister, M.; Amado, P. J.; Caballero, J. A.; Fernández, M.; Rodríguez, E.; Ribas, I.; Reiners, A.; Cardona Guillén, C.; Cifuentes, C.; Czesla, S.; Hatzes, A. P.; Kürster, M.; Montes, D.; Morales, J. C.; Pedraz, S. and Sadegi, S.
Astronomy & Astrophysics, 663, Article A27

Exoplanet mass estimation for a sample of targets for the Ariel mission (2022)
Barnes, J. R. and Haswell, C. A.
Experimental Astronomy, 53 (pp. 589-606)

A possible transit of a disintegrating exoplanet in the nearby multiplanet system DMPP-1 (2020-05)
Jones, Mark; Haswell, Carole; Barnes, John; Staab, Daniel and Heller, René
Astrophysical Journal Letters, 895, Article L17(1)

Doppler Imaging and Differential Rotation of σ² Coronae Borealis Using SONG* (2020-04-28)
Xiang, Yue; Gu, Shenghong; Cameron, A. Collier; Barnes, J. R.; Christensen-Dalsgaard, J.; Grundahl, F.; Antoci, V.; Andersen, M. F. and Pallé, P. L.
Astrophysical Journal, 893, Article 164(2)

Dispersed Matter Planet Project discoveries of ablating planets orbiting nearby bright stars (2020-04)
Haswell, Carole A.; Staab, Daniel; Barnes, John R.; Anglada-Escudé, Guillem; Fossati, Luca; Jenkins, James S.; Norton, Andrew J.; Doherty, James P. J. and Cooper, Joseph
Nature Astronomy, 4(4) (pp. 408-418)

A compact multi-planet system around a bright nearby star from the Dispersed Matter Planet Project (2020-04)
Staab, D.; Haswell, C. A.; Barnes, J. R.; Anglada-Escudé, G.; Fossati, L.; Doherty, J. P. J.; Cooper, J.; Jenkins, J. S.; Díaz, M. R. and Soto, M. G.
Nature Astronomy, 4(4) (pp. 399-407)

An ablating 2.6 M_⊕ planet in an eccentric binary from the Dispersed Matter Planet Project (2020-04)
Barnes, John R,; Haswell, Carole A.; Staab, Daniel; Anglada-Escudé, Guillem; Fossati, Luca; Doherty, James P. J.; Cooper, Joseph; Jenkins, James S.; Díaz, Matías R.; Soto, Maritza G. and Peña Rojas, Pablo A.
Nature Astronomy, 4(4) (pp. 419-426)

The CARMENES search for exoplanets around M dwarfs. Characterization of the nearby ultra-compact multiplanetary system YZ Ceti. (2020-04)
Stock, S.; Kemmer, J.; Reffert, S.; Trifonov, T.; Kaminski, A.; Dreizler, S.; Quirrenbach, A.; Caballero, J. A.; Reiners, A.; Jeffers, S. V.; Anglada-Escudé, G.; Ribas, I.; Amado, P. J.; Barrado, D.; Barnes, J. R.; Bauer, F. F.; Berdiñas, Z. M.; Béjar, V. J. S.; Coleman, G. A. L.; Cortés-Contreras, M.; Díez-Alonso, E.; Domínguez-Fernández, A. J.; Espinoza, N.; Haswell, C. A.; Hatzes, A.; Henning, T.; Jenkins, J. S.; Jones, H. R. A.; Kossakowski, D.; Kürster, M.; Lafarga, M.; Lee, M. H.; López González, M. J.; Montes, D.; Morales, J. C.; Morales, N.; Pallé, E.; Pedraz, S.; Rodríguez, E.; Rodríguez-López, C. and Zechmeister, M.
Astronomy & Astrophysics, 636, Article A119

The first Doppler imaging of the active binary prototype RS Canum Venaticorum (2020-03)
Xiang, Yue; Gu, Shenghong; Wolter, U.; Schmitt, J. H. M. M.; Cameron, A. Collier; Barnes, J. R.; Mittag, M.; Perdelwitz, V. and Kohl, S.
Monthly Notices of the Royal Astronomical Society, 492(3) (pp. 3647-3656)

Red Dots: A temperate 1.5 Earth-mass planet candidate in a compact multi-terrestrial planet system around GJ 1061 (2020-03)
Dreizler, S.; Jeffers, S. V.; Rodríguez, E.; Zechmeister, M.; Barnes, J. R.; Haswell, C. A.; Coleman, G. A. L.; Lalitha, S.; Soto, D. Hidalgo; Strachan, J. B. P.; Hambsch, F.-J.; López-González, M. J.; Morales, N.; López, C. Rodríguez; Berdiñas, Z. M.; Ribas, I.; Pallé, E.; Reiners, A. and Anglada-Escudé, G.
Monthly Notices of the Royal Astronomical Society, 493(1) (pp. 536-550)

A multiplanet system of super-Earths orbiting the brightest red dwarf star GJ 887 (2020)
Jeffers, S. V.; Dreizler, S.; Barnes, J. R.; Haswell, C. A.; Nelson, R. P.; Rodríguez, E.; López-González, M. J.; Morales, N.; Luque, R.; Zechmeister, M.; Vogt, S. S.; Jenkins, J. S.; Palle, E.; Berdi ñas, Z. M.; Coleman, G. A. L.; Díaz, M. R.; Ribas, I.; Jones, H. R. A.; Butler, R. P.; Tinney, C. G.; Bailey, J.; Carter, B. D.; O’Toole, S.; Wittenmyer, R. A.; Crane, J. D.; Feng, F.; Shectman, S. A.; Teske, J.; Reiners, A.; Amado, P. J. and Anglada-Escudé, G.
Science, 368(6498) (pp. 1477-1481)

A candidate super-Earth planet orbiting near the snow line of Barnard’s star (2018-11-15)
Ribas, I.; Tuomi, M.; Reiners, A.; Butler, R. P.; Morales, J. C.; Perger, M.; Dreizler, S.; Rodríguez-López, C.; González Hernández, J. I.; Rosich, A.; Feng, F.; Trifonov, T.; Vogt, S. S.; Caballero, J. A.; Hatzes, A.; Herrero, E.; Jeffers, S. V.; Lafarga, M.; Murgas, F.; Nelson, R. P.; Rodríguez, E.; Strachan, J. B. P.; Tal-Or, L.; Teske, J.; Toledo-Padrón, B.; Zechmeister, M.; Quirrenbach, A.; Amado, P. J.; Azzaro, M.; Béjar, V. J. S.; Barnes, J. R.; Berdiñas, Z. M.; Burt, J.; Coleman, G.; Cortés-Contreras, M.; Crane, J.; Engle, S. G.; Guinan, E. F.; Haswell, C. A.; Henning, Th.; Holden, B.; Jenkins, J.; Jones, H. R. A.; Kaminski, A.; Kiraga, M.; Kürster, M.; Lee, M. H.; López-González, M. J.; Montes, D.; Morin, J.; Ofir, A.; Pallé, E.; Rebolo, R.; Reffert, S.; Schweitzer, A.; Seifert, W.; Shectman, S. A.; Staab, D.; Street, R. A.; Suárez Mascareño, A.; Tsapras, Y.; Wang, S. X. and Anglada-Escudé, G.
Nature, 563(7731) (pp. 365-368)

The relation between stellar magnetic field geometry and chromospheric activity cycles – II The rapid 120-day magnetic cycle of τ Bootis (2018-10-01)
Jeffers, S. V.; Mengel, M.; Moutou, C.; Marsden, S. C.; Barnes, J. R.; Jardine, M. M.; Petit, P.; Schmitt, J. H. M. M.; See, V.; Vidotto, A. A. and the BCool collaboration,
Monthly Notices of the Royal Astronomical Society, 479(4) (pp. 5266-5271)

AD Leonis: Radial Velocity Signal of Stellar Rotation or Spin–Orbit Resonance? (2018-05)
Tuomi, Mikko; Jones, Hugh R. A.; Barnes, John R.; Anglada-Escudé, Guillem; Butler, R. Paul; Kiraga, Marcin and Vogt, Steven S.
The Astronomical Journal, 155, Article 192(5)

High-cadence spectroscopy of M-dwarfs – II. Searching for stellar pulsations with HARPS (2017-08-21)
Berdiñas, Z. M.; Rodríguez-López, C.; Amado, P. J.; Anglada-Escudé, G.; Barnes, J. R.; MacDonald, J.; Zechmeister, M. and Sarmiento, L. F.
Monthly Notices of the Royal Astronomical Society, 469(4) (pp. 4268-4282)

Calculations of periodicity from Hα profiles of Proxima Centauri (2017-06)
Collins, John M.; Jones, Hugh R. A. and Barnes, John R.
Astronomy & Astrophysics, 602, Article A48

Recovering planet radial velocity signals in the presence of starspot activity in fully convective stars (2017-04-30)
Barnes, J.R.; Jeffers, S. V.; Anglada-Escudé, G.; Haswell, C.A.; Jones, H. R. A.; Tuomi, M.; Feng, F.; Jenkins, J. S. and Petit, P.
Monthly Notices of the Royal Astronomical Society, 466(2) (pp. 1733-1740)

SALT observations of the Chromospheric Activity of Transiting Planet Hosts: Mass Loss and Star Planet Interactions (2017-04)
Staab, D.; Haswell, C.A.; Smith, Gareth D.; Fossati, L.; Barnes, J.R.; Busuttil, R. and Jenkins, J.S.
Monthly Notices of the Royal Astronomical Society, 466(1) (pp. 738-748)

New planetary systems from the Calan–Hertfordshire Extrasolar Planet Search (2017-04)
Jenkins, J. S.; Jones, H. R. A.; Tuomi, M.; Díaz, M.; Cordero, J. P.; Aguayo, A.; Pantoja, B.; Arriagada, P.; Mahu, R.; Brahm, R.; Rojo, P.; Soto, M. G.; Ivanyuk, O.; Becerra Yoma, N.; Day-Jones, A. C.; Ruiz, M. T.; Pavlenko, Y. V.; Barnes, J. R.; Murgas, F.; Pinfield, D. J.; Jones, M. I.; López-Morales, M.; Shectman, S.; Butler, R. P. and Minniti, D.
Monthly Notices of the Royal Astronomical Society, 466(1) (pp. 443-473)

Surprisingly different star-spot distributions on the near equal-mass equal-rotation-rate stars in the M dwarf binary GJ 65 AB (2017)
Barnes, J. R.; Jeffers, S. V.; Haswell, C. A.; Jones, H. R. A.; Shulyak, D.; Pavlenko, Ya. V. and Jenkins, J. S.
Monthly Notices of the Royal Astronomical Society, 471(1) (pp. 811-823)

The origin of the excess transit absorption in the HD 189733 system: planet or star? (2016-10-11)
Barnes, J. R.; Haswell, C. A.; Staab, D. and Anglada-Escudé, G.
Monthly Notices of the Royal Astronomical Society, 462(1) (pp. 1012-1028)

A terrestrial planet candidate in a temperate orbit around Proxima Centauri (2016-08-25)
Anglada-Escudé, Guillem; Amado, Pedro J.; Barnes, John; Berdiñas, Zaira M.; Butler, R. Paul; Coleman, Gavin A. L.; de la Cueva, Ignacio; Dreizler, Stefan; Endl, Michael; Giesers, Benjamin; Jeffers, Sandra V.; Jenkins, James S.; Jones, Hugh R. A.; Kiraga, Marcin; Kürster, Martin; López-González, Marίa J.; Marvin, Christopher J.; Morales, Nicolás; Morin, Julien; Nelson, Richard P.; Ortiz, José L.; Ofir, Aviv; Paardekooper, Sijme-Jan; Reiners, Ansgar; Rodríguez, Eloy; Rodrίguez-López, Cristina; Sarmiento, Luis F.; Strachan, John P.; Tsapras, Yiannis; Tuomi, Mikko and Zechmeister, Mathias
Nature, 536(7617) (pp. 437-440)

High-cadence spectroscopy of M dwarfs – I. Analysis of systematic effects in HARPS-N line profile measurements on the bright binary GJ 725A+B (2016-07-11)
Berdiñas, Z. M.; Amado, P. J.; Anglada-Escudé, G.; Rodríguez-López, C. and Barnes, J.
Monthly Notices of the Royal Astronomical Society, 459(4) (pp. 3551-3564)

The first Doppler images of the eclipsing binary SZ Piscium (2016-02-11)
Xiang, Yue; Gu, Shenghong; Cameron, A. Collier; Barnes, J. R. and Zhang, Liyun
Monthly Notices of the Royal Astronomical Society, 456(1) (pp. 314-322)

A maximum entropy approach to detect close-in giant planets around active stars (2015-12)
Petit, P.; Donati, J.-F.; Hébrard, E.; Morin, J.; Folsom, C. P.; Böhm, T.; Boisse, I.; Borgniet, S.; Bouvier, J.; Delfosse, X.; Hussain, G.; Jeffers, S. V.; Marsden, S. C. and Barnes, J. R.
Astronomy & Astrophysics, 584 (A84)

Starspot distributions on fully convective M dwarfs: implications for radial velocity planet searches (2015-10-07)
Barnes, J. R.; Jeffers, S. V.; Jones, H. R. A.; Pavlenko, Ya. V.; Jenkins, J. S.; Haswell, C. A. and Lohr, M. E.
The Astrophysical Journal, 812(1) (p 42)

Analysis of combined radial velocities and activity of BD+20 1790: evidence supporting the existence of a planetary companion (2015)
Hernán-Obispo, M.; Tuomi, M.; Gálvez-Ortiz, M. C.; Golovin, A.; Barnes, J. R.; Jones, H. R. A.; Kane, S. R.; Pinfield, D.; Jenkins, J. S.; Petit, P.; Anglada-Escudé, G.; Marsden, S. C.; Catalán, S.; Jeffers, S. V.; de Castro, E.; Cornide, M.; Garcés, A.; Jones, M. I.; Gorlova, N. and Andreev, M.
Astronomy & Astrophysics, 576, Article A66

Photospheric acne at the bottom of the main-sequence: Doppler images of M4.5 - M9V stars (2016)
Barnes, John; Haswell, Carole; Jeffers, Sandra; Jones, Hugh; Pavlenko, Yakiv; Lohr, Marcus and Jenkins, James
In : The 19th Cambridge Workshop on Cool Stars, Stellar Systems, and the Sun (Jun 2016, Uppsala, Sweden)

Characterising exoplanets and their environment with UV transmission spectroscopy (2015-03-04)
Fossati, L.; Bourrier, V.; Ehrenreich, D.; Haswell, C. A.; Kislyakova, K.G.; Lammer, H.; Lecavelier des Etangs, A.; Alibert, Y.; Ayres, T. R.; Ballester, G. E.; Barnes, J.; Bisikalo, D. V.; Cameron, A. Collier; Czesla, S.; Desert, J.-M.; France, K.; Gudel, M.; Guenther, E.; Helling, Ch.; Heng, K.; Homstrom, M.; Kaltenegger, L.; Koskinen, T.; Lanza, A. F.; Linsky, J. L.; Mordasini, C.; Pagano, I.; Pollacco, D.; Rauer, H.; Reiners, A.; Salz, M.; Schneider, P. C.; Shematovich, V. I.; Staab, D.; Vidotto, A. A.; Wheatley, P. J.; Wood, B. E. and Yelle, R. V.
Space Telescope Science Institute