Researcher
Ramotholo Sefako
South African Astronomical Observatory
Statistics
85 papers found
All papers authored by Ramotholo Sefako
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2024
Benjamin J. Hord 
,
Eliza M.-R. Kempton ,
Thomas M. Evans-Soma ,
David W. Latham ,
David R. Ciardi ,
Diana Dragomir ,
Knicole D. Colón ,
Gabrielle Ross,
Andrew Vanderburg ,
Zoe L. de Beurs ,
Karen A. Collins ,
Cristilyn N. Watkins ,
Jacob Bean ,
Nicolas B. Cowan ,
Tansu Daylan
and 132 other authors
Download from doi.org
,
Eliza M.-R. Kempton ,
Thomas M. Evans-Soma ,
David W. Latham ,
David R. Ciardi ,
Diana Dragomir ,
Knicole D. Colón ,
Gabrielle Ross,
Andrew Vanderburg ,
Zoe L. de Beurs ,
Karen A. Collins ,
Cristilyn N. Watkins ,
Jacob Bean ,
Nicolas B. Cowan ,
Tansu Daylan
and 132 other authors
Download from doi.org
2023
Melissa J. Hobson ,
Trifon Trifonov ,
Thomas Henning ,
Andrés Jordán ,
Felipe Rojas,
Nestor Espinoza ,
Rafael Brahm ,
Jan Eberhardt ,
Matías I. Jones,
Djamel Mekarnia,
Diana Kossakowski,
Martin Schlecker ,
Marcelo Tala Pinto,
Pascal José Torres Miranda ,
Lyu Abe
and 37 other authors
,
Trifon Trifonov ,
Thomas Henning ,
Andrés Jordán ,
Felipe Rojas,
Nestor Espinoza ,
Rafael Brahm ,
Jan Eberhardt ,
Matías I. Jones,
Djamel Mekarnia,
Diana Kossakowski,
Martin Schlecker ,
Marcelo Tala Pinto,
Pascal José Torres Miranda ,
Lyu Abe
and 37 other authors
TOI-199 b: A Well-characterized 100 day Transiting Warm Giant Planet with TTVs Seen from Antarctica
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J. D. Hartman ,
G. Á. Bakos ,
Z. Csubry,
A. W. Howard ,
H. Isaacson ,
S. Giacalone ,
A. Chontos ,
N. Narita ,
A. Fukui ,
J. P. de Leon ,
N. Watanabe ,
M. Mori ,
T. Kagetani ,
I. Fukuda ,
Y. Kawai
and 50 other authors
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,
G. Á. Bakos ,
Z. Csubry,
A. W. Howard ,
H. Isaacson ,
S. Giacalone ,
A. Chontos ,
N. Narita ,
A. Fukui ,
J. P. de Leon ,
N. Watanabe ,
M. Mori ,
T. Kagetani ,
I. Fukuda ,
Y. Kawai
and 50 other authors
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Tianjun Gan ,
Charles Cadieux ,
Farbod Jahandar ,
Allona Vazan ,
Sharon X. Wang ,
Shude Mao ,
Jaime A. Alvarado-Montes ,
D. N. C. Lin ,
Étienne Artigau ,
Neil J. Cook ,
René Doyon ,
Andrew W. Mann ,
Keivan G. Stassun ,
Adam J. Burgasser ,
Benjamin V. Rackham
and 29 other authors
,
Charles Cadieux ,
Farbod Jahandar ,
Allona Vazan ,
Sharon X. Wang ,
Shude Mao ,
Jaime A. Alvarado-Montes ,
D. N. C. Lin ,
Étienne Artigau ,
Neil J. Cook ,
René Doyon ,
Andrew W. Mann ,
Keivan G. Stassun ,
Adam J. Burgasser ,
Benjamin V. Rackham
and 29 other authors
A Massive Hot Jupiter Orbiting a Metal-rich Early M Star Discovered in the TESS Full-frame Images
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Angelica Psaridi ,
François Bouchy ,
Monika Lendl ,
Babatunde Akinsanmi ,
Keivan G. Stassun ,
Barry Smalley ,
David J. Armstrong ,
Saburo Howard ,
Solène Ulmer-Moll ,
Nolan Grieves ,
Khalid Barkaoui ,
Joseph E. Rodriguez ,
Edward M. Bryant ,
Olga Suárez ,
Tristan Guillot
and 50 other authors
,
François Bouchy ,
Monika Lendl ,
Babatunde Akinsanmi ,
Keivan G. Stassun ,
Barry Smalley ,
David J. Armstrong ,
Saburo Howard ,
Solène Ulmer-Moll ,
Nolan Grieves ,
Khalid Barkaoui ,
Joseph E. Rodriguez ,
Edward M. Bryant ,
Olga Suárez ,
Tristan Guillot
and 50 other authors
Three Saturn-mass planets transiting F-type stars revealed with TESS and HARPS
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Xinyan Hua ,
Sharon Xuesong Wang ,
Johanna K. Teske,
Tianjun Gan ,
Avi Shporer ,
George Zhou ,
Keivan G. Stassun ,
Markus Rabus ,
Steve B. Howell ,
Carl Ziegler,
Jack J. Lissauer ,
Joshua N. Winn ,
Jon M. Jenkins ,
Eric B. Ting ,
Karen A. Collins
and 20 other authors
,
Sharon Xuesong Wang ,
Johanna K. Teske,
Tianjun Gan ,
Avi Shporer ,
George Zhou ,
Keivan G. Stassun ,
Markus Rabus ,
Steve B. Howell ,
Carl Ziegler,
Jack J. Lissauer ,
Joshua N. Winn ,
Jon M. Jenkins ,
Eric B. Ting ,
Karen A. Collins
and 20 other authors
A Transiting Super-Earth in the Radius Valley and an Outer Planet Candidate Around HD 307842
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Merrin S. Peterson,
Björn Benneke ,
Karen Collins,
Caroline Piaulet ,
Ian J. M. Crossfield,
Mohamad Ali-Dib,
Jessie L. Christiansen ,
Jonathan Gagné,
Jackie Faherty,
Edwin Kite ,
Courtney Dressing ,
David Charbonneau,
Felipe Murgas ,
Marion Cointepas,
Jose Manuel Almenara
and 59 other authors
,
Karen Collins,
Caroline Piaulet ,
Ian J. M. Crossfield,
Mohamad Ali-Dib,
Jessie L. Christiansen ,
Jonathan Gagné,
Jackie Faherty,
Edwin Kite ,
Courtney Dressing ,
David Charbonneau,
Felipe Murgas ,
Marion Cointepas,
Jose Manuel Almenara
and 59 other authors
A temperate Earth-sized planet with tidal heating transiting an M6 star
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2022
Jennifer G. Winters ,
Ryan Cloutier ,
Amber A. Medina ,
Jonathan M. Irwin,
David Charbonneau ,
Nicola Astudillo-Defru ,
Xavier Bonfils,
Andrew W. Howard ,
Howard Isaacson ,
Jacob L. Bean ,
Andreas Seifahrt ,
Johanna K. Teske ,
Jason D. Eastman ,
Joseph D. Twicken ,
Karen A. Collins
and 68 other authors
,
Ryan Cloutier ,
Amber A. Medina ,
Jonathan M. Irwin,
David Charbonneau ,
Nicola Astudillo-Defru ,
Xavier Bonfils,
Andrew W. Howard ,
Howard Isaacson ,
Jacob L. Bean ,
Andreas Seifahrt ,
Johanna K. Teske ,
Jason D. Eastman ,
Joseph D. Twicken ,
Karen A. Collins
and 68 other authors
A Second Planet Transiting LTT 1445A and a Determination of the Masses of Both Worlds
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2021
Michele L. Silverstein ,
Joshua E. Schlieder ,
Thomas Barclay ,
Benjamin J. Hord ,
Wei-Chun Jao ,
Eliot Halley Vrijmoet ,
Todd J. Henry ,
Ryan Cloutier ,
Veselin B. Kostov ,
Ethan Kruse ,
Jennifer G. Winters ,
Jonathan M. Irwin,
Stephen R. Kane ,
Keivan G. Stassun ,
Chelsea Huang
and 36 other authors
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,
Joshua E. Schlieder ,
Thomas Barclay ,
Benjamin J. Hord ,
Wei-Chun Jao ,
Eliot Halley Vrijmoet ,
Todd J. Henry ,
Ryan Cloutier ,
Veselin B. Kostov ,
Ethan Kruse ,
Jennifer G. Winters ,
Jonathan M. Irwin,
Stephen R. Kane ,
Keivan G. Stassun ,
Chelsea Huang
and 36 other authors
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Zachary P. Vanderbosch ,
Saul Rappaport ,
Joseph A. Guidry ,
Bruce L. Gary ,
Simon Blouin ,
Thomas G. Kaye ,
Alycia J. Weinberger ,
Carl Melis ,
Beth L. Klein ,
B. Zuckerman ,
Andrew Vanderburg ,
J. J. Hermes ,
Ryan J. Hegedus ,
Matthew R. Burleigh ,
Ramotholo Sefako
and 2 other authors
,
Saul Rappaport ,
Joseph A. Guidry ,
Bruce L. Gary ,
Simon Blouin ,
Thomas G. Kaye ,
Alycia J. Weinberger ,
Carl Melis ,
Beth L. Klein ,
B. Zuckerman ,
Andrew Vanderburg ,
J. J. Hermes ,
Ryan J. Hegedus ,
Matthew R. Burleigh ,
Ramotholo Sefako
and 2 other authors
Recurring Planetary Debris Transits and Circumstellar Gas around White Dwarf ZTF J0328–1219
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2020
Avi Shporer ,
Karen A. Collins ,
Nicola Astudillo-Defru ,
Jonathan Irwin,
Xavier Bonfils,
Kevin I. Collins ,
Elisabeth Matthews,
Jennifer G. Winters ,
David R. Anderson ,
James D. Armstrong,
David Charbonneau ,
Ryan Cloutier ,
Tansu Daylan ,
Tianjun Gan ,
Maximilian N. Günther
and 23 other authors
,
Karen A. Collins ,
Nicola Astudillo-Defru ,
Jonathan Irwin,
Xavier Bonfils,
Kevin I. Collins ,
Elisabeth Matthews,
Jennifer G. Winters ,
David R. Anderson ,
James D. Armstrong,
David Charbonneau ,
Ryan Cloutier ,
Tansu Daylan ,
Tianjun Gan ,
Maximilian N. Günther
and 23 other authors
GJ 1252 b: A 1.2 R ⊕ Planet Transiting an M3 Dwarf at 20.4 pc
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2019
G. Zhou,
C. X. Huang,
G. A. Bakos,
J. D. Hartman,
D. W. Latham,
S. N. Quinn,
K. A. Collins,
J. N. Winn,
I. Wong,
G. Kovacs,
Z. Csubry,
W. Bhatti,
K. Penev,
A. Bieryla,
G. A. Esquerdo
and 56 other authors
VizieR Online Data Catalog: Differential photometry & RVs of HAT-P-69 & HAT-P-70 (Zhou+, 2019)
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Maximilian N. Günther ,
Francisco J. Pozuelos,
Jason A. Dittmann,
Diana Dragomir,
Stephen R. Kane,
Tansu Daylan,
Adina D. Feinstein,
Chelsea X. Huang,
Timothy D. Morton,
Andrea Bonfanti,
L. G. Bouma,
Jennifer Burt ,
Karen A. Collins,
Jack J. Lissauer ,
Elisabeth Matthews
and 45 other authors
Download from www.nature.com
,
Francisco J. Pozuelos,
Jason A. Dittmann,
Diana Dragomir,
Stephen R. Kane,
Tansu Daylan,
Adina D. Feinstein,
Chelsea X. Huang,
Timothy D. Morton,
Andrea Bonfanti,
L. G. Bouma,
Jennifer Burt ,
Karen A. Collins,
Jack J. Lissauer ,
Elisabeth Matthews
and 45 other authors
Download from www.nature.com
Maximilian N. Günther ,
Francisco J. Pozuelos,
Jason A. Dittmann,
Diana Dragomir,
Stephen R. Kane,
Tansu Daylan,
Adina D. Feinstein,
Chelsea X. Huang,
Timothy D. Morton,
Andrea Bonfanti,
L. G. Bouma,
Jennifer Burt ,
Karen A. Collins,
Jack J. Lissauer ,
Elisabeth Matthews
and 45 other authors
,
Francisco J. Pozuelos,
Jason A. Dittmann,
Diana Dragomir,
Stephen R. Kane,
Tansu Daylan,
Adina D. Feinstein,
Chelsea X. Huang,
Timothy D. Morton,
Andrea Bonfanti,
L. G. Bouma,
Jennifer Burt ,
Karen A. Collins,
Jack J. Lissauer ,
Elisabeth Matthews
and 45 other authors
A super-Earth and two sub-Neptunes transiting the nearby and quiet M dwarf TOI-270
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Rebekah I. Dawson ,
Chelsea X. Huang ,
Jack J. Lissauer,
Karen A. Collins ,
Lizhou Sha ,
James Armstrong,
Dennis M. Conti,
Kevin I. Collins,
Phil Evans,
Tianjun Gan,
Keith Horne ,
Michael Ireland ,
Felipe Murgas,
Gordon Myers ,
Howard M. Relles
and 20 other authors
,
Chelsea X. Huang ,
Jack J. Lissauer,
Karen A. Collins ,
Lizhou Sha ,
James Armstrong,
Dennis M. Conti,
Kevin I. Collins,
Phil Evans,
Tianjun Gan,
Keith Horne ,
Michael Ireland ,
Felipe Murgas,
Gordon Myers ,
Howard M. Relles
and 20 other authors
TOI-216b and TOI-216 c: Two Warm, Large Exoplanets in or Slightly Wide of the 2:1 Orbital Resonance
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Veselin B. Kostov ,
Joshua E. Schlieder ,
Thomas Barclay ,
Elisa V. Quintana,
Knicole D. Colón,
Jonathan Brande,
Karen A. Collins ,
Adina D. Feinstein,
Samuel Hadden ,
Stephen R. Kane ,
Laura Kreidberg ,
Ethan Kruse ,
Christopher Lam,
Elisabeth Matthews,
Benjamin T. Montet
and 100 other authors
,
Joshua E. Schlieder ,
Thomas Barclay ,
Elisa V. Quintana,
Knicole D. Colón,
Jonathan Brande,
Karen A. Collins ,
Adina D. Feinstein,
Samuel Hadden ,
Stephen R. Kane ,
Laura Kreidberg ,
Ethan Kruse ,
Christopher Lam,
Elisabeth Matthews,
Benjamin T. Montet
and 100 other authors
The L 98-59 System: Three Transiting, Terrestrial-size Planets Orbiting a Nearby M Dwarf
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G. Zhou ,
C. X. Huang ,
G. Á. Bakos ,
J. D. Hartman ,
David W. Latham ,
S. N. Quinn ,
K. A. Collins ,
J. N. Winn ,
G. Kovacs,
M. de Val-Borro,
Z. Csubry,
W. Bhatti ,
K. Penev ,
A. Bieryla ,
I. Wong
and 60 other authors
Download from doi.org
,
C. X. Huang ,
G. Á. Bakos ,
J. D. Hartman ,
David W. Latham ,
S. N. Quinn ,
K. A. Collins ,
J. N. Winn ,
G. Kovacs,
M. de Val-Borro,
Z. Csubry,
W. Bhatti ,
K. Penev ,
A. Bieryla ,
I. Wong
and 60 other authors
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Lisa A. Crause,
David Gilbank,
Carel van Gend,
Hannah L. Worters,
Craig Sass,
Enrico J. Kotze,
Stephen Potter,
Amanda Sickafoose,
Ramotholo Sefako ,
John Southworth,
Lucas Macri
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,
John Southworth,
Lucas Macri
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K. D. Colon,
G. Zhou,
A. Shporer,
K. A. Collins,
A. Bieryla,
N. Espinoza,
F. Murgas,
P. Pattarakijwanich,
S. Awiphan,
J. D. Armstrong,
J. Bailey,
G. Barentsen,
D. Bayliss,
A. Chakpor,
W. D. Cochran
and 15 other authors
VizieR Online Data Catalog: Photometric observations of the K2-22 system (Colon+, 2018)
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2018
Knicole D. Colón ,
George Zhou ,
Avi Shporer ,
Karen A. Collins ,
Allyson Bieryla ,
Néstor Espinoza,
Felipe Murgas,
Petchara Pattarakijwanich ,
Supachai Awiphan ,
James D. Armstrong,
Jeremy Bailey,
Geert Barentsen,
Daniel Bayliss ,
Anurak Chakpor,
William D. Cochran
and 16 other authors
,
George Zhou ,
Avi Shporer ,
Karen A. Collins ,
Allyson Bieryla ,
Néstor Espinoza,
Felipe Murgas,
Petchara Pattarakijwanich ,
Supachai Awiphan ,
James D. Armstrong,
Jeremy Bailey,
Geert Barentsen,
Daniel Bayliss ,
Anurak Chakpor,
William D. Cochran
and 16 other authors
A Large Ground-based Observing Campaign of the Disintegrating Planet K2-22b
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