Search Results - "Sefako, Ramotholo"

Time Delay of Mg ii Emission Response for the Luminous Quasar HE 0435-4312: toward Application of the High-accretor Radius–Luminosity Relation in Cosmology by Zajaček, Michal, Czerny, Bożena, Martinez–Aldama, Mary Loli, Rałowski, Mateusz, Olejak, Aleksandra, Przyłuski, Robert, Panda, Swayamtrupta, Hryniewicz, Krzysztof, Śniegowska, Marzena, Naddaf, Mohammad-Hassan, Prince, Raj, Pych, Wojtek, Pietrzyński, Grzegorz, Sobrino Figaredo, Catalina, Haas, Martin, Średzińska, Justyna, Krupa, Magdalena, Kurcz, Agnieszka, Udalski, Andrzej, Karas, Vladimír, Sarna, Marek, Worters, Hannah L., Sefako, Ramotholo R., Genade, Anja

“…Abstract Using six years of spectroscopic monitoring of the luminous quasar HE 0435-4312 ( z = 1.2231) with the Southern African Large Telescope, in…”
Get full text

LCO observations of a super-critical distorted pulsation in the roAp star J0855 (TYC 2488-1241-1) by Holdsworth, Daniel L, Saio, Hideyuki, Sefako, Ramotholo R, Bowman, Dominic M

Get full text

Planet Hunters NGTS: New Planet Candidates from a Citizen Science Search of the Next Generation Transit Survey Public Data by O’Brien, Sean M., Schwamb, Megan E., Gill, Samuel, Watson, Christopher A., Burleigh, Matthew R., Kendall, Alicia, Casewell, Sarah L., Anderson, David R., Vines, José I., Jenkins, James S., Alves, Douglas R., Trouille, Laura, Ulmer-Moll, Solène, Bryant, Edward M., Apergis, Ioannis, Battley, Matthew, Bayliss, Daniel, Eisner, Nora L., Gillen, Edward, Goad, Michael R., Günther, Maximilian N., Henderson, Beth A., Heo, Jeong-Eun, Jackson, David G., Lintott, Chris, McCormac, James, Moyano, Maximiliano, Nielsen, Louise D., Osborn, Ares, Saha, Suman, Sefako, Ramotholo R., Stephens, Andrew W., Tilbrook, Rosanna H., Udry, Stéphane, West, Richard G., Wheatley, Peter J., Zivave, Tafadzwa, Lim, See Min, Sainio, Arttu

“…Abstract We present the results from the first two years of the Planet Hunters Next Generation Transit Survey (NGTS) citizen science project, which searches…”
Get full text

NGTS-19b: a high-mass transiting brown dwarf in a 17-d eccentric orbit by Acton, Jack S, Goad, Michael R, Burleigh, Matthew R, Casewell, Sarah L, Breytenbach, Hannes, Nielsen, Louise D, Smith, Gareth, Anderson, David R, Battley, Matthew P, Bayliss, Daniel, Bouchy, François, Bryant, Edward M, Csizmadia, Szilárd, Eigmüller, Philipp, Gill, Samuel, Gillen, Edward, Grieves, Nolan, Günther, Maximilian N, Henderson, Beth A, Hodgkin, Simon T, Jackman, James A G, Jenkins, James S, Lendl, Monika, McCormac, James, Moyano, Maximiliano, Nelson, Richard P, Sefako, Ramotholo R, Smith, Alexis M S, Stalport, Manu, Thomas, Jessymol K, Tilbrook, Rosanna H, Udry, Stéphane, West, Richard G, Wheatley, Peter J, Worters, Hannah L, Vines, Jose I, Alves, Douglas R

“…ABSTRACT We present the discovery of NGTS-19b, a high-mass transiting brown dwarf discovered by the Next Generation Transit Survey. We investigate the system…”
Get full text

NGTS-28Ab: a short period transiting brown dwarf by Henderson, Beth A, Casewell, Sarah L, Goad, Michael R, Acton, Jack S, Günther, Maximilian N, Nielsen, Louise D, Burleigh, Matthew R, Belardi, Claudia, Tilbrook, Rosanna H, Turner, Oliver, Howell, Steve B, Clark, Catherine A, Littlefield, Colin, Barkaoui, Khalid, Alves, Douglas R, Anderson, David R, Bayliss, Daniel, Bouchy, Francois, Bryant, Edward M, Dransfield, George, Ducrot, Elsa, Eigmüller, Philipp, Gill, Samuel, Gillen, Edward, Gillon, Michaël, Hawthorn, Faith, Hooton, Matthew J, Jackman, James A G, Jehin, Emmanuel, Jenkins, James S, Kendall, Alicia, Lendl, Monika, McCormac, James, Moyano, Maximiliano, Pedersen, Peter Pihlmann, Pozuelos, Francisco J, Ramsay, Gavin, Sefako, Ramotholo R, Timmermans, Mathilde, Triaud, Amaury H M J, Udry, Stephane, Vines, Jose I, Watson, Christopher A, West, Richard G, Wheatley, Peter J, Zúñiga-Fernández, Sebastián

“…ABSTRACT We report the discovery of a brown dwarf orbiting a M1 host star. We first identified the brown dwarf within the Next Generation Transit Survey data,…”
Get full text

TOI-1859b: A 64 Day Warm Jupiter on an Eccentric and Misaligned Orbit by Dong, Jiayin, Wang, Songhu, Rice, Malena, Zhou, George, Huang, Chelsea X., Dawson, Rebekah I., Stefánsson, Gudmundur K., Halverson, Samuel, Kanodia, Shubham, Mahadevan, Suvrath, McElwain, Michael W., Alvarado-Montes, Jaime A., Ninan, Joe P., Robertson, Paul, Roy, Arpita, Schwab, Christian, Logsdon, Sarah E., Terrien, Ryan C., Collins, Karen A., Srdoc, Gregor, Sefako, Ramotholo, Laloum, Didier, Latham, David W., Bieryla, Allyson, Dalba, Paul A., Dragomir, Diana, Villanueva, Steven, Howell, Steve B., Ricker, George R., Seager, S., Winn, Joshua N., Jenkins, Jon M., Shporer, Avi, Rapetti, David

“…Abstract Warm Jupiters are close-in giant planets with relatively large planet–star separations (i.e., 10 < a / R ⋆ < 100). Given their weak tidal interactions…”
Get full text

TIC-320687387 B: a long-period eclipsing M-dwarf close to the hydrogen burning limit by Gill, Samuel, Ulmer-Moll, Solène, Wheatley, Peter J, Bayliss, Daniel, Burleigh, Matthew R, Acton, Jack S, Casewell, Sarah L, Watson, Christopher A, Lendl, Monika, Worters, Hannah L, Sefako, Ramotholo R, Anderson, David R, Alves, Douglas R, Bouchy, François, Bryant, Edward M, Eigmüller, Philipp, Gillen, Edward, Goad, Michael R, Grieves, Nolan, Günther, Maximilian N, Henderson, Beth A, Jenkins, James S, Mishra, Lokesh, Moyano, Maximiliano, Osborn, Hugh P, Tilbrook, Rosanna H, Udry, Stéphane, Vines, Jose I, West, Richard G

“…ABSTRACT We are using precise radial velocities from CORALIE together with precision photometry from the Next Generation Transit Survey (NGTS) to follow-up…”
Get full text

NGTS 15b, 16b, 17b, and 18b: four hot Jupiters from the Next-Generation Transit Survey by Tilbrook, Rosanna H, Burleigh, Matthew R, Costes, Jean C, Gill, Samuel, Nielsen, Louise D, Vines, José I, Queloz, Didier, Hodgkin, Simon T, Worters, Hannah L, Goad, Michael R, Acton, Jack S, Henderson, Beth A, Armstrong, David J, Anderson, David R, Bayliss, Daniel, Bouchy, François, Briegal, Joshua T, Bryant, Edward M, Casewell, Sarah L, Chaushev, Alexander, Cooke, Benjamin F, Eigmüller, Philipp, Gillen, Edward, Günther, Maximilian N, Hogan, Aleisha, Jenkins, James S, Lendl, Monika, McCormac, James, Moyano, Maximiliano, Raynard, Liam, Smith, Alexis M S, Udry, Stéphane, Watson, Christopher A, West, Richard G, Wheatley, Peter J, Breytenbach, Hannes, Sefako, Ramotholo R, Thomas, Jessymol K, Alves, Douglas R

“…ABSTRACT We report the discovery of four new hot Jupiters with the Next-Generation Transit Survey (NGTS). NGTS-15b, NGTS-16b, NGTS-17b, and NGTS-18b are…”
Get full text

TESS Hunt for Young and Maturing Exoplanets (THYME). X. A Two-planet System in the 210 Myr MELANGE-5 Association by Thao, Pa Chia, Mann, Andrew W., Barber, Madyson G., Kraus, Adam L., Tofflemire, Benjamin M., Bush, Jonathan L., Wood, Mackenna L., Collins, Karen A., Vanderburg, Andrew, Quinn, Samuel N., Zhou, George, Newton, Elisabeth R., Ziegler, Carl, Law, Nicholas, Barkaoui, Khalid, Pozuelos, Francisco J., Timmermans, Mathilde, Gillon, Michaël, Jehin, Emmanuël, Schwarz, Richard P., Gan, Tianjun, Shporer, Avi, Horne, Keith, Sefako, Ramotholo, Suarez, Olga, Mekarnia, Djamel, Guillot, Tristan, Abe, Lyu, Triaud, Amaury H. M. J., Radford, Don J., Lopez Murillo, Ana Isabel, Ricker, George R., Winn, Joshua N., Jenkins, Jon M., Bouma, Luke G., Fausnaugh, Michael, Guerrero, Natalia M., Kunimoto, Michelle

“…Abstract Young (<500 Myr) planets are critical to studying how planets form and evolve. Among these young planetary systems, multiplanet configurations are…”
Get full text

The discovery of three hot Jupiters, NGTS-23b, 24b, and 25b, and updated parameters for HATS-54b from the Next Generation Transit Survey by Jackson, David G, Watson, Christopher A, de Mooij, Ernst J W, Acton, Jack S, Alves, Douglas R, Anderson, David R, Armstrong, David J, Bayliss, Daniel, Belardi, Claudia, Bouchy, François, Bryant, Edward M, Burleigh, Matthew R, Casewell, Sarah L, Costes, Jean C, Eigmüller, Phillip, Goad, Michael R, Gill, Samuel, Gillen, Edward, Günther, Maximilian N, Hawthorn, Faith, Henderson, Beth A, Jackman, James A G, Jenkins, James S, Lendl, Monika, Kendall, Alicia, McCormac, James, Moyano, Maximiliano, Nielsen, Louise D, Osborn, Ares, Sefako, Ramotholo R, Smith, Alexis M S, Tilbrook, Rosanna H, Turner, Oliver, Udry, Stéphane, Vines, Jose I, West, Richard G, Wheatley, Peter J, Worters, Hannah

“…ABSTRACT We report the discovery of three new hot Jupiters with the Next Generation Transit Survey (NGTS) as well as updated parameters for HATS-54b, which was…”
Get full text

NGTS-21b: an inflated Super-Jupiter orbiting a metal-poor K dwarf by Alves, Douglas R, Jenkins, James S, Vines, Jose I, Nielsen, Louise D, Gill, Samuel, Acton, Jack S, Anderson, D R, Bayliss, Daniel, Bouchy, François, Breytenbach, Hannes, Bryant, Edward M, Burleigh, Matthew R, Casewell, Sarah L, Eigmüller, Philipp, Gillen, Edward, Goad, Michael R, Günther, Maximilian N, Henderson, Beth A, Kendall, Alicia, Lendl, Monika, Moyano, Maximiliano, Sefako, Ramotholo R, Smith, Alexis M S, Costes, Jean C, Tilbrook, Rosanne H, Thomas, Jessymol K, Udry, Stéphane, Watson, Christopher A, West, Richard G, Wheatley, Peter J, Worters, Hannah L, Osborn, Ares

“…ABSTRACT We report the discovery of NGTS-21b , a massive hot Jupiter orbiting a low-mass star as part of the Next Generation Transit Survey (NGTS). The planet…”
Get full text

A Transiting Super-Earth in the Radius Valley and an Outer Planet Candidate Around HD 307842 by Hua, Xinyan, Wang, Sharon Xuesong, Teske, Johanna K., Gan, Tianjun, Shporer, Avi, Zhou, George, Stassun, Keivan G., Rabus, Markus, Howell, Steve B., Ziegler, Carl, Lissauer, Jack J., Winn, Joshua N., Jenkins, Jon M., Ting, Eric B., Collins, Karen A., Mann, Andrew W., Zhu, Wei, Wang, Su, Butler, R. Paul, Crane, Jeffrey D., Shectman, Stephen A., Bouma, Luke G., Briceño, César, Dragomir, Diana, Fong, William, Law, Nicholas, Medina, Jennifer V., Quinn, Samuel N., Ricker, George R., Schwarz, Richard P., Seager, Sara, Sefako, Ramotholo, Stockdale, Chris, Vanderspek, Roland, Villaseñor, Joel

“…Abstract We report the confirmation of a TESS-discovered transiting super-Earth planet orbiting a mid-G star, HD 307842 (TOI-784). The planet has a period of…”
Get full text

TESS Discovery of Twin Planets near 2:1 Resonance around Early M Dwarf TOI 4342 by Tey, Evan, Huang, Chelsea X., Kunimoto, Michelle, Vanderburg, Andrew, Shporer, Avi, Quinn, Samuel N., Zhou, George, Collins, Karen A., Collins, Kevin I., Jensen, Eric L. N., Schwarz, Richard P., Sefako, Ramotholo, Gan, Tianjun, Furlan, Elise, Gnilka, Crystal L., Howell, Steve B., Lester, Kathryn V., Ziegler, Carl, Briceño, César, Law, Nicholas, Mann, Andrew W., Ricker, George R., Vanderspek, Roland K., Latham, David W., Seager, S., Jenkins, Jon M., Winn, Joshua N., Caldwell, Douglas A., Charbonneau, David, Burke, Christopher J., Essack, Zahra

“…Abstract With data from the Transiting Exoplanet Survey Satellite (TESS), we showcase improvements to the MIT Quick Look Pipeline (QLP) through the discovery…”
Get full text

Discovery of the first symbiotic star in NGC 6822 by Kniazev, Alexei Y., Väisänen, Petri, Whitelock, Patricia A., Menzies, John W., Feast, Michael W., Grebel, Eva K., Buckley, David A. H., Hashimoto, Yas, Loaring, Nicola, Romero-Colmenero, Encarni, Sefako, Ramotholo, Burgh, Eric B., Nordsieck, Kenneth

“…We report the discovery of the first symbiotic star (V= 21.6, KS= 15.8 mag) in the Local Group dwarf irregular galaxy NGC 6822. This star was identified during…”
Get full text

Constraints on Pulsar Magnetospheric and Wind Parameters for the Compact Nebulae of Vela and PSR B1706–44 by Sefako, Ramotholo R, de Jager, Ocker C

Get full text

Eclipses during the 2010 Eruption of the Recurrent Nova U Scorpii by Schaefer, Bradley E, Pagnotta, Ashley, LaCluyze, Aaron P, Reichart, Daniel E, Ivarsen, Kevin M, Haislip, Joshua B, Nysewander, Melissa C, Moore, Justin P, Oksanen, Arto, Worters, Hannah L, Sefako, Ramotholo R, Mentz, Jaco, Dvorak, Shawn, Gomez, Tomas, Harris, Barbara G, Henden, Arne A, Tan, Thiam Guan, Templeton, Matthew, Allen, W. H, Monard, Berto, Rea, Robert D, Roberts, George, Stein, William, Maehara, Hiroyuki, Richards, Thomas, Stockdale, Chris, Krajci, Tom, Sjoberg, George, McCormick, Jennie, Revnivtsev, Mikhail, Molkov, Sergei, Suleimanov, Valery, Darnley, Matthew J, Bode, Michael F, Handler, Gerald, Lepine, Sebastien, Shara, Michael M

“…The eruption of the recurrent nova U Scorpii on 2010 January 28 is now the all-time best observed nova event. We report 36,776 magnitudes throughout its 67 day…”
Get full text

The role of magnetic fields in the formation of the filamentary infrared dark cloud G11.11–0.12 by Sefako, Ramotholo, Yang, Yang, Jiang, Zhibo, Su, Yang, Zhang, Shaobo, Zhou, Xin

“…ABSTRACT We report on the near-infrared polarimetric observations of G11.11–0.12 (hereafter G11) obtained with SIRPOL on the 1.4 m IRSF telescope. The…”
Get full text

Recurring Planetary Debris Transits and Circumstellar Gas around White Dwarf ZTF J0328–1219 by Vanderbosch, Zachary P., Rappaport, Saul, Guidry, Joseph A., Gary, Bruce L., Blouin, Simon, Kaye, Thomas G., Weinberger, Alycia J., Melis, Carl, Klein, Beth L., Zuckerman, B., Vanderburg, Andrew, Hermes, J. J., Hegedus, Ryan J., Burleigh, Matthew. R., Sefako, Ramotholo, Worters, Hannah L., Heintz, Tyler M.

“…Abstract We present follow-up photometry and spectroscopy of ZTF J0328−1219, strengthening its status as a white dwarf exhibiting transiting planetary debris…”
Get full text

GJ 1252 b: A 1.2 R⊕ Planet Transiting an M3 Dwarf at 20.4 pc by Shporer, Avi, Collins, Karen A., Astudillo-Defru, Nicola, Irwin, Jonathan, Bonfils, Xavier, Collins, Kevin I., Matthews, Elisabeth, Winters, Jennifer G., Anderson, David R., Armstrong, James D., Charbonneau, David, Cloutier, Ryan, Daylan, Tansu, Gan, Tianjun, Günther, Maximilian N., Hellier, Coel, Horne, Keith, Huang, Chelsea X., Jensen, Eric L. N., Kielkopf, John, Palle, Enric, Sefako, Ramotholo, Stassun, Keivan G., Tan, Thiam-Guan, Vanderburg, Andrew, Ricker, George R., Latham, David W., Vanderspek, Roland, Seager, Sara, Winn, Joshua N., Jenkins, Jon M, Colon, Knicole, Dressing, Courtney, Léepine, Sébastien, Muirhead, Philip S., Rose, Mark E., Twicken, Joseph D, Villasenor, Jesus Noel

“…We report the discovery of GJ 1252 b, a planet with a radius of 1.193 ± 0.074 R⊕ and an orbital period of 0.52 days around an M3-type star (0.381 ± 0.019 M⊕,…”
Get full text

The Discovery of a Planetary Companion Interior to Hot Jupiter WASP-132 b by Hord, Benjamin J., Colón, Knicole D., Berger, Travis A., Kostov, Veselin, Silverstein, Michele L., Stassun, Keivan G., Lissauer, Jack J., Collins, Karen A., Schwarz, Richard P., Sefako, Ramotholo, Ziegler, Carl, Briceño, César, Law, Nicholas, Mann, Andrew W., Ricker, George R., Latham, David W., Seager, S., Winn, Joshua N., Jenkins, Jon M., Bouma, Luke G., Falk, Ben, Torres, Guillermo, Twicken, Joseph D., Vanderburg, Andrew

“…Abstract Hot Jupiters are generally observed to lack close planetary companions, a trend that has been interpreted as evidence for high-eccentricity migration…”
Get full text