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Full-Text Articles in Astrophysics and Astronomy
Toi-150b And Toi-163b: Two Transiting Hot Jupiters, One Eccentric And One Inflated, Revealed By Tess Near And At The Edge Of The Jwst Cvz, D. Kossakowski, N. Espinoza, R. Brahm, A. Jordán, T. Henning, F. Rojas, M. Kürster, P. Sarkis, M. Schlecker, F. J. Pozuelos, K. Barkaoui, E. Jehin, M. Gillon, E. Matthews, E. P. Horch, D. R. Ciardi, I. J. M. Crossfield, E. Gonzales, S. B. Howell, R. Matson, J. Schlieder, J. Jenkins, G. Ricker, S. Seager, J. N. Winn, J. Li, M. E. Rose, J. C. Smith, S. Dynes, E. Morgan, J. N. Villasenor, D. Charbonneau, T. Jaffe, L. Yu, G. Bakos, W. Bhatti, F. Bouchy, K. A. Collins, K. I. Collins, Z. Csubry, P. Evans, Eric L.N. Jensen, C. Lovis, M. Marmier, L. D. Nielsen, D. Osip, F. Pepe, H. M. Relles, D. Ségransan, A. Shporer, C. Stockdale, V. Suc, O. Turner, S. Udry
Toi-150b And Toi-163b: Two Transiting Hot Jupiters, One Eccentric And One Inflated, Revealed By Tess Near And At The Edge Of The Jwst Cvz, D. Kossakowski, N. Espinoza, R. Brahm, A. Jordán, T. Henning, F. Rojas, M. Kürster, P. Sarkis, M. Schlecker, F. J. Pozuelos, K. Barkaoui, E. Jehin, M. Gillon, E. Matthews, E. P. Horch, D. R. Ciardi, I. J. M. Crossfield, E. Gonzales, S. B. Howell, R. Matson, J. Schlieder, J. Jenkins, G. Ricker, S. Seager, J. N. Winn, J. Li, M. E. Rose, J. C. Smith, S. Dynes, E. Morgan, J. N. Villasenor, D. Charbonneau, T. Jaffe, L. Yu, G. Bakos, W. Bhatti, F. Bouchy, K. A. Collins, K. I. Collins, Z. Csubry, P. Evans, Eric L.N. Jensen, C. Lovis, M. Marmier, L. D. Nielsen, D. Osip, F. Pepe, H. M. Relles, D. Ségransan, A. Shporer, C. Stockdale, V. Suc, O. Turner, S. Udry
Physics & Astronomy Faculty Works
We present the discovery of TYC9191-519-1b (TOI-150b, TIC 271893367) and HD271181b (TOI-163b, TIC 179317684), two hot Jupiters initially detected using 30-min cadence Transiting Exoplanet Survey Satellite (TESS) photometry from Sector 1 and thoroughly characterized through follow-up photometry (CHAT, Hazelwood, LCO/CTIO, El Sauce, TRAPPIST-S), high-resolution spectroscopy (FEROS, CORALIE), and speckle imaging (Gemini/DSSI), confirming the planetary nature of the two signals. A simultaneous joint fit of photometry and radial velocity using a new fitting package juliet reveals that TOI-150b is a 1.254±0.016 RJ, massive (2.61+0.19−0.12 MJ) hot Jupiter in a 5.857-d orbit, while TOI-163b is an inflated (RP = 1.478+0.022−0.029RJ, MP = …
Near-Resonance In A System Of Sub-Neptunes From Tess, S. N. Quinn, J. C. Becker, J. E. Rodriguez, S. Hadden, C. X. Huang, T. D. Morton, F. C. Adams, D. Armstrong, J. D. Eastman, J. Homer, S. R. Kane, J. J. Lissauer, J. D. Twicken, A. Vanderburg, R. Wittenmyer, G. R. Ricker, R. K. Vanderspek, D. W. Latham, S. Seager, J. N. Winn, J. M. Jenkins, E. Agol, K. Barkaoui, C. A. Beichman, F. Bouchy, L. G. Bouma, A. Burdanov, J. Campbell, R. Carlino, S. M. Cartwright, D. Charbonneau, J. L. Christiansen, D. Ciardi, K. A. Collins, K. I. Collins, D. M. Conti, I. J. M. Crossfield, T. Daylan, J. Dittmann, J. Doty, D. Dragomir, E. Ducrot, M. Gillon, A. Glidden, R. F. Goeke, E. J. Gonzales, K. G. Hełminiak, E. P. Horch, S. B. Howell, E. Jehin, Eric L.N. Jensen, J. F. Kielkopf, M. H. Kristiansen, N. Law, A. W. Mann, M. Marmier, R. A. Matson, E. Matthews, T. Mazeh, M. Mori, F. Murgas, C. Murray, N. Narita, L. D. Nielsen, G. Ottoni, E. Palle, R. Pawłaszek, F. Pepe, J. Pitogo De Leon, F. J. Pozuelos, H. M. Relles, J. E. Schlieder, D. Sebastian, D. Ségransan, A. Shporer, K. G. Stassun, M. Tamura, S. Udry, I. Waite, J. G. Winters, C. Ziegler
Near-Resonance In A System Of Sub-Neptunes From Tess, S. N. Quinn, J. C. Becker, J. E. Rodriguez, S. Hadden, C. X. Huang, T. D. Morton, F. C. Adams, D. Armstrong, J. D. Eastman, J. Homer, S. R. Kane, J. J. Lissauer, J. D. Twicken, A. Vanderburg, R. Wittenmyer, G. R. Ricker, R. K. Vanderspek, D. W. Latham, S. Seager, J. N. Winn, J. M. Jenkins, E. Agol, K. Barkaoui, C. A. Beichman, F. Bouchy, L. G. Bouma, A. Burdanov, J. Campbell, R. Carlino, S. M. Cartwright, D. Charbonneau, J. L. Christiansen, D. Ciardi, K. A. Collins, K. I. Collins, D. M. Conti, I. J. M. Crossfield, T. Daylan, J. Dittmann, J. Doty, D. Dragomir, E. Ducrot, M. Gillon, A. Glidden, R. F. Goeke, E. J. Gonzales, K. G. Hełminiak, E. P. Horch, S. B. Howell, E. Jehin, Eric L.N. Jensen, J. F. Kielkopf, M. H. Kristiansen, N. Law, A. W. Mann, M. Marmier, R. A. Matson, E. Matthews, T. Mazeh, M. Mori, F. Murgas, C. Murray, N. Narita, L. D. Nielsen, G. Ottoni, E. Palle, R. Pawłaszek, F. Pepe, J. Pitogo De Leon, F. J. Pozuelos, H. M. Relles, J. E. Schlieder, D. Sebastian, D. Ségransan, A. Shporer, K. G. Stassun, M. Tamura, S. Udry, I. Waite, J. G. Winters, C. Ziegler
Physics & Astronomy Faculty Works
We report the Transiting Exoplanet Survey Satellite detection of a multi-planet system orbiting the V = 10.9 K0 dwarf TOI-125. We find evidence for up to five planets, with varying confidence. Three transit signals with high signal-to-noise ratio correspond to sub-Neptune-sized planets (2.76, 2.79, and 2.94 R⊕), and we statistically validate the planetary nature of the two inner planets (Pb = 4.65 days, Pc = 9.15 days). With only two transits observed, we report the outer object (P.03 = 19.98 days) as a planet candidate with high signal-to-noise ratio. We also detect a candidate transiting …
Kelt-24b: A 5mJ Planet On A 5.6 Day Well-Aligned Orbit Around The Young V = 8.3 F-Star Hd 93148, J. E. Rodriguez, J. D. Eastman, G. Zhou, S. N. Quinn, T. G. Beatty, K. Penev, M. C. Johnson, P. A. Cargile, D. W. Latham, A. Bieryla, K. A. Collins, C. D. Dressing, D. R. Ciardi, H. M. Relles, G. Murawski, T. Nishiumi, A. Yonehara, R. Ishimaru, F. Yoshida, J. Gregorio, M. B. Lund, D. J. Stevens, K. G. Stassun, B. S. Gaudi, K. D. Colón, J. Pepper, N. Narita, S. Awiphan, P. Chuanraksasat, P. Benni, R. Zambelli, L. H. Garrison, M. L. Wilson, M. A. Cornachione, S. X. Wang, J. Labadie-Bartz, R. Rodríguez, R. J. Siverd, X. Yao, D. Bayliss, P. Berlind, M. L. Calkins, J. L. Chirstiansen, David H. Cohen, D. M. Conti, I. A. Curtis, D. L. Depoy, G. A. Esquerdo, P. Evans, D. Feliz, B. J. Fulton, T. W.-S. Holoien, D. J. James, T. Jayasinghe, H. Jang-Condell, Eric L.N. Jensen, J. A. Johnson, M. D. Joner, S. Khakpash, J. F. Kielkopf, R. B. Kuhn, M. Manner, J. L. Marshall, K. K. Mcleod, N. Mccrady, T. E. Oberst, R. J. Oelkers, M. T. Penny, P. A. Reed, D. H. Sliski, B. J. Shappee, D. C. Stephens, C. Stockdale, T.-G. Tan, M. Trueblood, P. Trueblood, S. Villanueva Jr., R. A. Wittenmyer, J. T. Wright
Kelt-24b: A 5mJ Planet On A 5.6 Day Well-Aligned Orbit Around The Young V = 8.3 F-Star Hd 93148, J. E. Rodriguez, J. D. Eastman, G. Zhou, S. N. Quinn, T. G. Beatty, K. Penev, M. C. Johnson, P. A. Cargile, D. W. Latham, A. Bieryla, K. A. Collins, C. D. Dressing, D. R. Ciardi, H. M. Relles, G. Murawski, T. Nishiumi, A. Yonehara, R. Ishimaru, F. Yoshida, J. Gregorio, M. B. Lund, D. J. Stevens, K. G. Stassun, B. S. Gaudi, K. D. Colón, J. Pepper, N. Narita, S. Awiphan, P. Chuanraksasat, P. Benni, R. Zambelli, L. H. Garrison, M. L. Wilson, M. A. Cornachione, S. X. Wang, J. Labadie-Bartz, R. Rodríguez, R. J. Siverd, X. Yao, D. Bayliss, P. Berlind, M. L. Calkins, J. L. Chirstiansen, David H. Cohen, D. M. Conti, I. A. Curtis, D. L. Depoy, G. A. Esquerdo, P. Evans, D. Feliz, B. J. Fulton, T. W.-S. Holoien, D. J. James, T. Jayasinghe, H. Jang-Condell, Eric L.N. Jensen, J. A. Johnson, M. D. Joner, S. Khakpash, J. F. Kielkopf, R. B. Kuhn, M. Manner, J. L. Marshall, K. K. Mcleod, N. Mccrady, T. E. Oberst, R. J. Oelkers, M. T. Penny, P. A. Reed, D. H. Sliski, B. J. Shappee, D. C. Stephens, C. Stockdale, T.-G. Tan, M. Trueblood, P. Trueblood, S. Villanueva Jr., R. A. Wittenmyer, J. T. Wright
Physics & Astronomy Faculty Works
We present the discovery of KELT-24 b, a massive hot Jupiter orbiting a bright (V = 8.3 mag, K = 7.2 mag) young F-star with a period of 5.6 days. The host star, KELT-24 (HD 93148), has a T eff = ${6509}_{-49}^{+50}$ K, a mass of M * = ${1.460}_{-0.059}^{+0.055}$ M ⊙, a radius of R * = 1.506 ± 0.022 R ⊙, and an age of ${0.78}_{-0.42}^{+0.61}$ Gyr. Its planetary companion (KELT-24 b) has a radius of R P = 1.272 ± 0.021 R J and a mass of M P = ${5.18}_{-0.22}^{+0.21}$ M J, and from Doppler tomographic …
Kelt-23ab: A Hot Jupiter Transiting A Near-Solar Twin Close To The Tess And Jwst Continuous Viewing Zones, D. Johns, P. A. Reed, J. E. Rodriguez, J. Pepper, K. A. Stassun, K. Penev, B. S. Gaudi, J. Labadie-Bartz, B. J. Fulton, S. N. Quinn, J. D. Eastman, D. R. Ciardi, L. Hirsch, D. J. Stevens, C. P. Stevens, T. E. Oberst, David H. Cohen, Eric L.N. Jensen, P. Benni, S. Villanueva Jr., G. Murawski, A, Bieryla, D. W. Latham, S. Vanaverbeke, F. Dubois, S. Rau, L. Logie, R. F. Rauenzahn, R. A. Wittenmyer, R. Zambelli, D. Bayliss, T. G. Beatty, K. A. Collins, K. D. Colón, I. A. Curtis, P. Evans, J. Gregorio, D. James, D. L. Depoy, M. C. Johnson, M. D. Joner, D. H. Kasper, S. Khakpash, J. F. Kielkopf, R. B. Kuhn, M. B. Lund, M. Manner, J. L. Marshall, K. K. Mcleod, M. T. Penny, H. Relles, R. J. Siverd, D. C. Stephens, C. Stockdale, T.-G. Tan, M. Trueblood, P. Trueblood, X. Yao
Kelt-23ab: A Hot Jupiter Transiting A Near-Solar Twin Close To The Tess And Jwst Continuous Viewing Zones, D. Johns, P. A. Reed, J. E. Rodriguez, J. Pepper, K. A. Stassun, K. Penev, B. S. Gaudi, J. Labadie-Bartz, B. J. Fulton, S. N. Quinn, J. D. Eastman, D. R. Ciardi, L. Hirsch, D. J. Stevens, C. P. Stevens, T. E. Oberst, David H. Cohen, Eric L.N. Jensen, P. Benni, S. Villanueva Jr., G. Murawski, A, Bieryla, D. W. Latham, S. Vanaverbeke, F. Dubois, S. Rau, L. Logie, R. F. Rauenzahn, R. A. Wittenmyer, R. Zambelli, D. Bayliss, T. G. Beatty, K. A. Collins, K. D. Colón, I. A. Curtis, P. Evans, J. Gregorio, D. James, D. L. Depoy, M. C. Johnson, M. D. Joner, D. H. Kasper, S. Khakpash, J. F. Kielkopf, R. B. Kuhn, M. B. Lund, M. Manner, J. L. Marshall, K. K. Mcleod, M. T. Penny, H. Relles, R. J. Siverd, D. C. Stephens, C. Stockdale, T.-G. Tan, M. Trueblood, P. Trueblood, X. Yao
Physics & Astronomy Faculty Works
We announce the discovery of KELT-23Ab, a hot Jupiter transiting the relatively bright (V = 10.3) star BD+66 911 (TYC 4187-996-1), and characterize the system using follow-up photometry and spectroscopy. A global fit to the system yields host-star properties of Teff = 5900 ± 49 K, M* = 0.945 ((+0.060)/(-0.054))M⊙, R* = 0.995 ± 0.015 R⊙, L* = 1.082 ((+0.051)/(-0.048)) L⊙, log g* = 4.418 ((+0.026)/(-0.025) (cgs), and [Fe/H] = -0.105 ± 0.077. KELT-23Ab is a hot Jupiter with a mass of Mp = 0.938 ((+0.045)/-0.042)) M …
Magnetic Ob[A] Stars With Tess: Probing Their Evolutionary And Rotational Properties (Mobster) – I. First-Light Observations Of Known Magnetic B And A Stars, A. David-Uraz, C. Neiner, J. Sikora, D. M. Bowman, V. Petit, S. Chowdhury, G. Handler, M. Pergeorelis, M. Cantiello, David H. Cohen, C. Erba, Z. Keszthelyi, V. Khalack, O. Kobzar, O. Kochukhov, J. Labadie-Bartz, C. C. Lovekin, R. Macinnis, S. P. Owocki, H. Pablo, M. E. Shultz, A. Ud-Doula, G. A. Wade, Mobster Collaboration
Magnetic Ob[A] Stars With Tess: Probing Their Evolutionary And Rotational Properties (Mobster) – I. First-Light Observations Of Known Magnetic B And A Stars, A. David-Uraz, C. Neiner, J. Sikora, D. M. Bowman, V. Petit, S. Chowdhury, G. Handler, M. Pergeorelis, M. Cantiello, David H. Cohen, C. Erba, Z. Keszthelyi, V. Khalack, O. Kobzar, O. Kochukhov, J. Labadie-Bartz, C. C. Lovekin, R. Macinnis, S. P. Owocki, H. Pablo, M. E. Shultz, A. Ud-Doula, G. A. Wade, Mobster Collaboration
Physics & Astronomy Faculty Works
In this paper we introduce the MOBSTER collaboration and lay out its scientific goals. We present first results based on the analysis of 19 previously known magnetic O, B, and A stars observed in 2-min cadence in sectors 1 and 2 of the Transiting Exoplanet Survey Satellite (TESS) mission. We derive precise rotational periods from the newly obtained light curves and compare them to previously published values. We also discuss the overall photometric phenomenology of the known magnetic massive and intermediate-mass stars and propose an observational strategy to augment this population by taking advantage of the high-quality observations produced by …
The L 98-59 System: Three Transiting, Terrestrial-Size Planets Orbiting A Nearby M Dwarf, V. B. Kostov, J. E. Schlieder, T. Barclay, E. V. Quintana, K. D. Colón, J. Brande, K. A. Collins, A. D. Feinstein, S. Hadden, S. R. Kane, L. Kreidberg, E. Kruse, C. Lam, E. Matthews, B. T. Montet, F. J. Pozuelos, K. G. Stassun, J. G. Winters, G. Ricker, R. Vanderspek, D. Latham, S. Seager, J. Winn, J. M. Jenkins, D. Afanasev, J. J. D. Armstrong, G. Arney, P. Boyd, G. Barentsen, K. Barkaoui, N. E. Batalha, C. Beichman, D. Bayliss, C. Burke, A. Burdanov, L. Cacciapuoti, A. Carson, D. Charbonneau, J. Christiansen, D. Ciardi, M. Clampin, K. I. Collins, D. M. Conti, J. Coughlin, G. Covone, I. Crossfield, L. Delrez, S. Domagal-Goldman, C. Dressing, E. Ducrot, Z. Essack, M. E. Everett, T. Fauchez, D. Foreman-Mackey, T. Gan, E. Gilbert, M. Gillon, E. Gonzales, A. Hamann, C. Hedges, H. Hocutt, K. Hoffman, E. P. Horch, K. Home, S. Howell, S. Hynes, M. Ireland, J. M. Irwin, G. Isopi, Eric L.N. Jensen, E. Jehin, L. Kaltenegger, J. F. Kielkopf, R. Kopparapu, N. Lewis, E. Lopez, J. J. Lissauer, A. W. Mann, F. Mallia, A. Mandell, R. A. Matson, T. Mazeh, T. Monsue, S. E. Moran, V. Moran, C. V. Morley, B. Morris, P. Muirhead, K. Mukai, S. Mullally, F. Mullally, C. Murray, N. Narita, E. Palle, D. Pidhorodetska, D. Quinn, H. Relles, S. Rinehart, M. Ritsko, J. E. Rodriguez, P. Rowden, J. F. Row, D. Sebastian, R. Sefako, S. Shahaf, A. Shporer, N. Tañón Reyes, P. Tenenbaum, E. B. Ting, J. D. Twicken, G. T. Van Belle, L. Vega, J. Volosin
The L 98-59 System: Three Transiting, Terrestrial-Size Planets Orbiting A Nearby M Dwarf, V. B. Kostov, J. E. Schlieder, T. Barclay, E. V. Quintana, K. D. Colón, J. Brande, K. A. Collins, A. D. Feinstein, S. Hadden, S. R. Kane, L. Kreidberg, E. Kruse, C. Lam, E. Matthews, B. T. Montet, F. J. Pozuelos, K. G. Stassun, J. G. Winters, G. Ricker, R. Vanderspek, D. Latham, S. Seager, J. Winn, J. M. Jenkins, D. Afanasev, J. J. D. Armstrong, G. Arney, P. Boyd, G. Barentsen, K. Barkaoui, N. E. Batalha, C. Beichman, D. Bayliss, C. Burke, A. Burdanov, L. Cacciapuoti, A. Carson, D. Charbonneau, J. Christiansen, D. Ciardi, M. Clampin, K. I. Collins, D. M. Conti, J. Coughlin, G. Covone, I. Crossfield, L. Delrez, S. Domagal-Goldman, C. Dressing, E. Ducrot, Z. Essack, M. E. Everett, T. Fauchez, D. Foreman-Mackey, T. Gan, E. Gilbert, M. Gillon, E. Gonzales, A. Hamann, C. Hedges, H. Hocutt, K. Hoffman, E. P. Horch, K. Home, S. Howell, S. Hynes, M. Ireland, J. M. Irwin, G. Isopi, Eric L.N. Jensen, E. Jehin, L. Kaltenegger, J. F. Kielkopf, R. Kopparapu, N. Lewis, E. Lopez, J. J. Lissauer, A. W. Mann, F. Mallia, A. Mandell, R. A. Matson, T. Mazeh, T. Monsue, S. E. Moran, V. Moran, C. V. Morley, B. Morris, P. Muirhead, K. Mukai, S. Mullally, F. Mullally, C. Murray, N. Narita, E. Palle, D. Pidhorodetska, D. Quinn, H. Relles, S. Rinehart, M. Ritsko, J. E. Rodriguez, P. Rowden, J. F. Row, D. Sebastian, R. Sefako, S. Shahaf, A. Shporer, N. Tañón Reyes, P. Tenenbaum, E. B. Ting, J. D. Twicken, G. T. Van Belle, L. Vega, J. Volosin
Physics & Astronomy Faculty Works
We report the Transiting Exoplanet Survey Satellite (TESS) discovery of three terrestrial-size planets transiting L 98-59 (TOI-175, TIC 307210830)—a bright M dwarf at a distance of 10.6 pc. Using the Gaia-measured distance and broadband photometry, we find that the host star is an M3 dwarf. Combined with the TESS transits from three sectors, the corresponding stellar parameters yield planet radii ranging from 0.8 R⊕ to 1.6 R⊕. All three planets have short orbital periods, ranging from 2.25 to 7.45 days with the outer pair just wide of a 2:1 period resonance. Diagnostic tests produced by the TESS …
The Effect Of Binarity On Circumstellar Disk Evolution, S. A. Barenfeld, J. M. Carpenter, A. I. Sargent, A. C. Rizzuto, A. L. Kraus, T. Meshkat, R. L. Akeson, Eric L.N. Jensen, S. Hinkley
The Effect Of Binarity On Circumstellar Disk Evolution, S. A. Barenfeld, J. M. Carpenter, A. I. Sargent, A. C. Rizzuto, A. L. Kraus, T. Meshkat, R. L. Akeson, Eric L.N. Jensen, S. Hinkley
Physics & Astronomy Faculty Works
We present new results on how the presence of stellar companions affects disk evolution based on a study of the 5–11 Myr old Upper Scorpius OB Association. Of the 50 G0-M3 Upper Sco members with disks in our sample, only seven host a stellar companion within 2'' and brighter than K = 15, compared to 35 of 75 members without disks. This matches a trend seen in the 1–2 Myr old Taurus region, where systems with a stellar companion within 40 au have a lower fraction of infrared-identified disks than those without such companions, indicating shorter disk lifetimes in close …
Resolved Young Binary Systems And Their Disks, R. L. Akeson, Eric L.N. Jensen, J. Carpenter, L. Ricci, S. Laos, N. F. Nogueira, Emma M. Suen-Lewis , '18
Resolved Young Binary Systems And Their Disks, R. L. Akeson, Eric L.N. Jensen, J. Carpenter, L. Ricci, S. Laos, N. F. Nogueira, Emma M. Suen-Lewis , '18
Physics & Astronomy Faculty Works
We have conducted a survey of young single and multiple systems in the Taurus–Auriga star-forming region with the Atacama Large Millimeter Array (ALMA), substantially improving both the spatial resolution and sensitivity with which individual protoplanetary disks in these systems have been observed. These ALMA observations can resolve binary separations as small as 25–30 au and have an average 3σ detection level of 0.35 mJy, equivalent to a disk mass of 4 × 10−5 M ⊙ for an M3 star. Our sample was constructed from stars that have an infrared excess and/or signs of accretion and have been classified as Class …
Extreme Resonance Line Profile Variations In The Ultraviolet Spectra Of Ngc 1624-2: Probing The Giant Magnetosphere Of The Most Strongly Magnetized Known O-Type Star, A. David-Uraz, C. Erba, V. Petit, A. W. Fullerton, F. Martins, N. R. Walborn, R. Macinnis, R. H. Barbá, David H. Cohen, J. Maíz Apellániz, Y. Nazé, S. P. Owocki, J. O. Sundqvist, A Ud-Doula, G. A. Wade
Extreme Resonance Line Profile Variations In The Ultraviolet Spectra Of Ngc 1624-2: Probing The Giant Magnetosphere Of The Most Strongly Magnetized Known O-Type Star, A. David-Uraz, C. Erba, V. Petit, A. W. Fullerton, F. Martins, N. R. Walborn, R. Macinnis, R. H. Barbá, David H. Cohen, J. Maíz Apellániz, Y. Nazé, S. P. Owocki, J. O. Sundqvist, A Ud-Doula, G. A. Wade
Physics & Astronomy Faculty Works
In this paper, we present high-resolution HST/COS observations of the extreme magnetic O star NGC 1624-2. These represent the first ultraviolet spectra of this archetypal object. We examine the variability of its wind-sensitive resonance lines, comparing it to that of other known magnetic O stars. In particular, the observed variations in the profiles of the C iv and Si iv doublets between low state and high state are the largest observed in any magnetic O-type star, consistent with the expected properties of NGC 1624-2’s magnetosphere. We also observe a redshifted absorption component in the low state, a feature not seen …
Tess Discovery Of An Ultra-Short-Period Planet Around The Nearby M Dwarf Lhs 3844, R. Vanderspek, C. X. Huang, A. Vanderburg, G. R. Ricker, D. W. Latham, S. Seager, J. N. Winn, J. M. Jenkins, J. Burt, J. Dittmann, E. Newton, S. N. Quinn, A. Shporer, D. Charbonneau, J. Irwin, K. Ment, J. G. Winters, K. A. Collins, P. Evans, T. Gan, R. Hart, Eric L.N. Jensen, J. Kielkopf, S. Mao, W. Waalkes, F. Bouchy, M. Marmier, L. D. Nielsen, G. Ottoni, F. Pepe, D. Ségransan, S. Udry, T. Henry, L. A. Paredes, H.-S. James, R. H. Hinojosa, M. L. Silverstein, E. Palle, Z. Berta-Thompson, I. Crossfield, M. D. Davies, D. Dragomir, M. Fausnaugh, A. Glidden, J. Pepper, E. H. Morgan, M. Rose, J. D. Twicken, J. N. S. Villaseñor, L. Yu, G. Bakos, J. Bean, L. A. Buchhave, J. Christensen-Dalsgaard, J. L. Christiansen, D. R. Ciardi, M. Clampin, N. De Lee, D. Deming, J. Doty, J. G. Jernigan, L. Kaltenegger, J. J. Lissauer, P. R. Mccullough, N. Narita, M. Paegert, A. Pal, S. Rinehart, D. Sasselov, B. Sato, A. Sozzetti, K. G. Stassun, G. Torres
Tess Discovery Of An Ultra-Short-Period Planet Around The Nearby M Dwarf Lhs 3844, R. Vanderspek, C. X. Huang, A. Vanderburg, G. R. Ricker, D. W. Latham, S. Seager, J. N. Winn, J. M. Jenkins, J. Burt, J. Dittmann, E. Newton, S. N. Quinn, A. Shporer, D. Charbonneau, J. Irwin, K. Ment, J. G. Winters, K. A. Collins, P. Evans, T. Gan, R. Hart, Eric L.N. Jensen, J. Kielkopf, S. Mao, W. Waalkes, F. Bouchy, M. Marmier, L. D. Nielsen, G. Ottoni, F. Pepe, D. Ségransan, S. Udry, T. Henry, L. A. Paredes, H.-S. James, R. H. Hinojosa, M. L. Silverstein, E. Palle, Z. Berta-Thompson, I. Crossfield, M. D. Davies, D. Dragomir, M. Fausnaugh, A. Glidden, J. Pepper, E. H. Morgan, M. Rose, J. D. Twicken, J. N. S. Villaseñor, L. Yu, G. Bakos, J. Bean, L. A. Buchhave, J. Christensen-Dalsgaard, J. L. Christiansen, D. R. Ciardi, M. Clampin, N. De Lee, D. Deming, J. Doty, J. G. Jernigan, L. Kaltenegger, J. J. Lissauer, P. R. Mccullough, N. Narita, M. Paegert, A. Pal, S. Rinehart, D. Sasselov, B. Sato, A. Sozzetti, K. G. Stassun, G. Torres
Physics & Astronomy Faculty Works
Data from the newly commissioned Transiting Exoplanet Survey Satellite has revealed a "hot Earth" around LHS 3844, an M dwarf located 15 pc away. The planet has a radius of 1.303 ± 0.022 R⊕ and orbits the star every 11 hr. Although the existence of an atmosphere around such a strongly irradiated planet is questionable, the star is bright enough (I = 11.9, K = 9.1) for this possibility to be investigated with transit and occultation spectroscopy. The star's brightness and the planet's short period will also facilitate the measurement of the planet's mass through Doppler spectroscopy.
Diagnosing The Clumpy Protoplanetary Disk Of The Uxor Type Young Star Gm Cephei, P. C. Huang, W. P. Chen, M. Mugrauer, R. Bischoff, J. Budaj, O. Burkhonov, S. Ehgamberdiev, R. Errmann, Z. Garai, H. Y. Hsiao, C. L. Hu, R. Janulis, Eric L.N. Jensen, S. Kiyota, K. Kuramoto, C. S. Lin, H. C. Lin, J. Z. Liu, O. Lux, H. Naito, R. Neuhäuser, J. Ohlert, E. Pakštienė, T. Pribulla, J. K. T. Qvam, S. Raetz, S. Sato, M. Schwartz, E. Semkov, S. Takagi, D. Wagner, M. Watanabe, Y. Zhang
Diagnosing The Clumpy Protoplanetary Disk Of The Uxor Type Young Star Gm Cephei, P. C. Huang, W. P. Chen, M. Mugrauer, R. Bischoff, J. Budaj, O. Burkhonov, S. Ehgamberdiev, R. Errmann, Z. Garai, H. Y. Hsiao, C. L. Hu, R. Janulis, Eric L.N. Jensen, S. Kiyota, K. Kuramoto, C. S. Lin, H. C. Lin, J. Z. Liu, O. Lux, H. Naito, R. Neuhäuser, J. Ohlert, E. Pakštienė, T. Pribulla, J. K. T. Qvam, S. Raetz, S. Sato, M. Schwartz, E. Semkov, S. Takagi, D. Wagner, M. Watanabe, Y. Zhang
Physics & Astronomy Faculty Works
UX Orionis stars (UXors) are Herbig Ae/Be or T Tauri stars exhibiting sporadic occultation of stellar light by circumstellar dust. GM Cephei is such a UXor in the young (∼4 Myr) open cluster Trumpler 37, showing prominent infrared excess, emission-line spectra, and flare activity. Our photometric monitoring (2008–2018) detects (1) an ∼3.43 day period, likely arising from rotational modulation by surface starspots, (2) sporadic brightening on timescales of days due to accretion, (3) irregular minor flux drops due to circumstellar dust extinction, and (4) major flux drops, each lasting for a couple of months with a recurrence time, though not …
Kelt-22ab: A Massive, Short-Period Hot Jupiter Transiting A Near-Solar Twin, J. Labadie-Bartz, J. E. Rodriguez, K. G. Stassun, D. R. Ciardi, K. Penev, M. C. Johnson, B. S. Gaudi, K. D. Colón, A. Bieryla, D. W. Latham, J. Pepper, K. A. Collins, P. Evans, H. Relles, R. J. Siverd, J. Bento, X. Yao, C. Stockdale, T.-G. Tan, G. Zhou, J. D. Eastman, M. D. Albrow, D. Bayliss, T. G. Beatty, P. Berlind, V. Bozza, M. L. Calkins, David H. Cohen, I. A. Curtis, G. A. Esquerdo, D. Feliz, B. J. Fulton, J. Gregorio, D. James, Eric L.N. Jensen, J. A. Johnson, S. A. Johnson, M. D. Joner, D. Kasper, J. F. Kielkopf, R. B. Kuhn, M. B. Lund, A. Malpas, M. Manner, N. Mccrady, K. K. Mcleod, T. E. Oberst, M. T. Penny, P. A. Reed, D. H. Sliski, D. C. Stephens, D. J. Stevens, S. Villanueva Jr., R. A. Wittenmyer, J. T. Wright, R. Zambelli
Kelt-22ab: A Massive, Short-Period Hot Jupiter Transiting A Near-Solar Twin, J. Labadie-Bartz, J. E. Rodriguez, K. G. Stassun, D. R. Ciardi, K. Penev, M. C. Johnson, B. S. Gaudi, K. D. Colón, A. Bieryla, D. W. Latham, J. Pepper, K. A. Collins, P. Evans, H. Relles, R. J. Siverd, J. Bento, X. Yao, C. Stockdale, T.-G. Tan, G. Zhou, J. D. Eastman, M. D. Albrow, D. Bayliss, T. G. Beatty, P. Berlind, V. Bozza, M. L. Calkins, David H. Cohen, I. A. Curtis, G. A. Esquerdo, D. Feliz, B. J. Fulton, J. Gregorio, D. James, Eric L.N. Jensen, J. A. Johnson, S. A. Johnson, M. D. Joner, D. Kasper, J. F. Kielkopf, R. B. Kuhn, M. B. Lund, A. Malpas, M. Manner, N. Mccrady, K. K. Mcleod, T. E. Oberst, M. T. Penny, P. A. Reed, D. H. Sliski, D. C. Stephens, D. J. Stevens, S. Villanueva Jr., R. A. Wittenmyer, J. T. Wright, R. Zambelli
Physics & Astronomy Faculty Works
We present the discovery of KELT-22Ab, a hot Jupiter from the KELT-South survey. KELT-22Ab transits the moderately bright (V ~ 11.1) Sun-like G2V star TYC 7518-468-1. The planet has an orbital period of P = 1.3866529 ± 0.0000027 days, a radius of RP = 1.285 ((+0.12)/(=0.071)) RJ, and a relatively large mass of MP = 3.47 ((+0.15)/(=0.14)) MJ. The star has R★ = 1.099 ((+0.079)/(=0.046)) R⊙, M★ = 1.092 ((+0.045)/(-0.041) M⊙, Teff = 5767 ((+50)/(-49) K, log g★ = 4.393 ((+0.039)/(-0.060)) (cgs), and [m/H] = …