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3. K2-146: Discovery of Planet c, Precise Masses from Transit Timing, and Observed Precession

Author

Hamann, Aaron, Montet, Benjamin T., Fabrycky, Daniel C., Agol, Eric, and Kruse, Ethan

Subjects
Astrophysics - Earth and Planetary Astrophysics
Abstract

K2-146 is a mid-M dwarf ($M_\star = 0.331 \pm 0.009 M_\odot$; $R_\star = 0.330 \pm 0.010 R_\odot$), observed in Campaigns 5, 16, and 18 of the K2 mission. In Campaign 5 data, a single planet was discovered with an orbital period of $2.6$~days and large transit timing variations due to an unknown perturber. Here we analyze data from Campaigns 16 and 18, detecting the transits of a second planet, c, with an orbital period of $4.0$~days, librating in a 3:2 resonance with planet b. Large, anti-correlated timing variations of both planets exist due to their resonant perturbations. The planets have a mutual inclination of $2.40^\circ\pm0.25^\circ$, which torqued planet c more closely into our line-of-sight. Planet c was grazing in Campaign 5 and thus missed in previous searches; in Campaigns 16 and 18 it is fully transiting, and its transit depth is three times larger. We improve the stellar properties using data from Gaia DR2, and using dynamical fits find that both planets are sub-Neptunes: their masses are $5.77\pm0.18$ and $7.50\pm0.23 M_{\oplus}$ and their radii are $2.04\pm0.06$ and $2.19\pm0.07$ R$_\oplus$, respectively. These mass constraints set the precision record for small exoplanets (a few gas giants have comparable relative precision). These planets lie in the photoevaporation valley when viewed in Radius-Period space, but due to the low-luminosity M-dwarf host star, they lie among the atmosphere-bearing planets when viewed in Radius-Irradiation space. This, along with their densities being 60%-80% that of Earth, suggests that they may both have retained a substantial gaseous envelope., Comment: 24 pages, 19 figures, accepted for publication in AJ

Published
2019
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4. The L 98-59 System: Three Transiting, Terrestrial-Sized Planets Orbiting a Nearby M-dwarf

Author

Kostov, Veselin B., Schlieder, Joshua E., Barclay, Thomas, Quintana, Elisa V., Colon, Knicole D., Brande, Jonathan, Collins, Karen A., Feinstein, Adina D., Hadden, Samuel, Kane, Stephen R., Kreidberg, Laura, Kruse, Ethan, Lam, Christopher, Matthews, Elisabeth, Montet, Benjamin T., Pozuelos, Francisco J., Stassun, Keivan G., Winters, Jennifer G., Ricker, George, Vanderspek, Roland, Latham, David, Seager, Sara, Winn, Joshua, Jenkins, Jon M., Afanasev, Dennis, Armstrong, James J. D., Arney, Giada, Boyd, Patricia, Barentsen, Geert, Barkaoui, Khalid, Batalha, Natalie E., Beichman, Charles, Bayliss, Daniel, Burke, Christopher, Burdanov, Artem, Cacciapuoti, Luca, Carson, Andrew, Charbonneau, David, Christiansen, Jessie, Ciardi, David, Clampin, Mark, Collins, Kevin I., Conti, Dennis M., Coughlin, Jeffrey, Covone, Giovanni, Crossfield, Ian, Delrez, Laetitia, Domagal-Goldman, Shawn, Dressing, Courtney, Ducrot, Elsa, Essack, Zahra, Everett, Mark E., Fauchez, Thomas, Foreman-Mackey, Daniel, Gan, Tianjun, Gilbert, Emily, Gillon, Michael, Gonzales, Erica, Hamann, Aaron, Hedges, Christina, Hocutt, Hannah, Hoffman, Kelsey, Horch, Elliott P., Horne, Keith, Howell, Steve, Hynes, Shane, Ireland, Michael, Irwin, Jonathan M., Isopi, Giovanni, Jensen, Eric L. N., Jehin, Emmanuel, Kaltenegger, Lisa, Kielkopf, John F., Kopparapu, Ravi, Lewis, Nikole, Lopez, Eric, Lissauer, Jack J., Mann, Andrew W., Mallia, Franco, Mandell, Avi, Matson, Rachel A., Mazeh, Tsevi, Monsue, Teresa, Moran, Sarah E., Moran, Vickie, Morley, Caroline V., Morris, Brett, Muirhead, Philip, Mukai, Koji, Mullally, Susan, Mullally, Fergal, Murray, Catriona, Narita, Norio, alle, EnricP, Pidhorodetska, Daria, Quinn, David, Relles, Howard, Rinehart, Stephen, Ritsko, Matthew, Rodriguez, Joseph E., Rowden, Pamela, Rowe, Jason F., Sebastian, Daniel, Sefako, Ramotholo, Shahaf, Sahar, Shporer, Avi, Reyes, Naylynn Tanon, Tenenbaum, Peter, Ting, Eric B., Twicken, Joseph D., van Belle, Gerard T., Vega, Laura, Volosin, Jeffrey, Walkowicz, Lucianne M., and Youngblood, Allison

Subjects
Astrophysics - Earth and Planetary Astrophysics
Abstract

We report the Transiting Exoplanet Survey Satellite (TESS) discovery of three terrestrial-sized 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 broad-band 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 0.8REarth to 1.6REarth. 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 Data Validation Report and the vetting package DAVE rule out common false positive sources. These analyses, along with dedicated follow-up and the multiplicity of the system, lend confidence that the observed signals are caused by planets transiting L 98-59 and are not associated with other sources in the field. The L 98-59 system is interesting for a number of reasons: the host star is bright (V = 11.7 mag, K = 7.1 mag) and the planets are prime targets for further follow-up observations including precision radial-velocity mass measurements and future transit spectroscopy with the James Webb Space Telescope; the near resonant configuration makes the system a laboratory to study planetary system dynamical evolution; and three planets of relatively similar size in the same system present an opportunity to study terrestrial planets where other variables (age, metallicity, etc.) can be held constant. L 98-59 will be observed in 4 more TESS sectors, which will provide a wealth of information on the three currently known planets and have the potential to reveal additional planets in the system., Comment: 27 pages, 22 figures, AJ accepted

Published
2019
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18. Utility of phosphatidylethanol testing as an objective measure of alcohol use during the preoperative evaluation for bariatric surgery

Author

Miller-Matero, Lisa R., primary, Adkins, Elise, additional, Zohr, Samantha J., additional, Martens, Kellie M., additional, Hamann, Aaron, additional, Snodgrass, Maunda, additional, Maye, Melissa, additional, Braciszewski, Jordan M., additional, Szymanski, Wanda, additional, Green, Sally, additional, Genaw, Jeffrey, additional, and Carlin, Arthur M., additional

Published
2023
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23. Predictors of Alcohol Use after Bariatric Surgery

Author

Miller-Matero, Lisa R., primary, Hamann, Aaron, additional, LaLonde, Leah, additional, Martens, Kellie M., additional, Son, John, additional, Clark-Sienkiewicz, Shannon, additional, Sata, Monika, additional, Coleman, Joseph P., additional, Hecht, Leah M., additional, Braciszewski, Jordan M., additional, and Carlin, Arthur M., additional

Published
2020
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28. The L 98-59 System: Three Transiting, Terrestrial-size Planets Orbiting a Nearby M Dwarf

Author

Kostov, Veselin B., primary, Schlieder, Joshua E., additional, Barclay, Thomas, additional, Quintana, Elisa V., additional, Colón, Knicole D., additional, Brande, Jonathan, additional, Collins, Karen A., additional, Feinstein, Adina D., additional, Hadden, Samuel, additional, Kane, Stephen R., additional, Kreidberg, Laura, additional, Kruse, Ethan, additional, Lam, Christopher, additional, Matthews, Elisabeth, additional, Montet, Benjamin T., additional, Pozuelos, Francisco J., additional, Stassun, Keivan G., additional, Winters, Jennifer G., additional, Ricker, George, additional, Vanderspek, Roland, additional, Latham, David, additional, Seager, Sara, additional, Winn, Joshua, additional, Jenkins, Jon M., additional, Afanasev, Dennis, additional, Armstrong, James J. D., additional, Arney, Giada, additional, Boyd, Patricia, additional, Barentsen, Geert, additional, Barkaoui, Khalid, additional, Batalha, Natalie E., additional, Beichman, Charles, additional, Bayliss, Daniel, additional, Burke, Christopher, additional, Burdanov, Artem, additional, Cacciapuoti, Luca, additional, Carson, Andrew, additional, Charbonneau, David, additional, Christiansen, Jessie, additional, Ciardi, David, additional, Clampin, Mark, additional, Collins, Kevin I., additional, Conti, Dennis M., additional, Coughlin, Jeffrey, additional, Covone, Giovanni, additional, Crossfield, Ian, additional, Delrez, Laetitia, additional, Domagal-Goldman, Shawn, additional, Dressing, Courtney, additional, Ducrot, Elsa, additional, Essack, Zahra, additional, Everett, Mark E., additional, Fauchez, Thomas, additional, Foreman-Mackey, Daniel, additional, Gan, Tianjun, additional, Gilbert, Emily, additional, Gillon, Michaël, additional, Gonzales, Erica, additional, Hamann, Aaron, additional, Hedges, Christina, additional, Hocutt, Hannah, additional, Hoffman, Kelsey, additional, Horch, Elliott P., additional, Horne, Keith, additional, Howell, Steve, additional, Hynes, Shane, additional, Ireland, Michael, additional, Irwin, Jonathan M., additional, Isopi, Giovanni, additional, Jensen, Eric L. N., additional, Jehin, Emmanuël, additional, Kaltenegger, Lisa, additional, Kielkopf, John F., additional, Kopparapu, Ravi, additional, Lewis, Nikole, additional, Lopez, Eric, additional, Lissauer, Jack J., additional, Mann, Andrew W., additional, Mallia, Franco, additional, Mandell, Avi, additional, Matson, Rachel A., additional, Mazeh, Tsevi, additional, Monsue, Teresa, additional, Moran, Sarah E., additional, Moran, Vickie, additional, Morley, Caroline V., additional, Morris, Brett, additional, Muirhead, Philip, additional, Mukai, Koji, additional, Mullally, Susan, additional, Mullally, Fergal, additional, Murray, Catriona, additional, Narita, Norio, additional, Palle, Enric, additional, Pidhorodetska, Daria, additional, Quinn, David, additional, Relles, Howard, additional, Rinehart, Stephen, additional, Ritsko, Matthew, additional, Rodriguez, Joseph E., additional, Rowden, Pamela, additional, Rowe, Jason F., additional, Sebastian, Daniel, additional, Sefako, Ramotholo, additional, Shahaf, Sahar, additional, Shporer, Avi, additional, Reyes, Naylynn Tañón, additional, Tenenbaum, Peter, additional, Ting, Eric B., additional, Twicken, Joseph D., additional, van Belle, Gerard T., additional, Vega, Laura, additional, Volosin, Jeffrey, additional, Walkowicz, Lucianne M., additional, and Youngblood, Allison, additional

Published
2019
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36. The L 98-59 System: Three Transiting, Terrestrial-size Planets Orbiting a Nearby M Dwarf

Author

Kostov, Veselin B., Schlieder, Joshua E., Barclay, Thomas, Quintana, Elisa V., Colón, Knicole D., Brande, Jonathan, Collins, Karen A., Feinstein, Adina D., Hadden, Samuel, Kane, Stephen R., Kreidberg, Laura, Kruse, Ethan, Lam, Christopher, Matthews, Elisabeth, Montet, Benjamin T., Pozuelos, Francisco J., Stassun, Keivan G., Winters, Jennifer G., Ricker, George, Vanderspek, Roland, Latham, David, Seager, Sara, Winn, Joshua, Jenkins, Jon M., Afanasev, Dennis, Armstrong, James J. D., Arney, Giada, Boyd, Patricia, Barentsen, Geert, Barkaoui, Khalid, Batalha, Natalie E., Beichman, Charles, Bayliss, Daniel, Burke, Christopher, Burdanov, Artem, Cacciapuoti, Luca, Carson, Andrew, Charbonneau, David, Christiansen, Jessie, Ciardi, David, Clampin, Mark, Collins, Kevin I., Conti, Dennis M., Coughlin, Jeffrey, Covone, Giovanni, Crossfield, Ian, Delrez, Laetitia, Domagal-Goldman, Shawn, Dressing, Courtney, Ducrot, Elsa, Essack, Zahra, Everett, Mark E., Fauchez, Thomas, Foreman-Mackey, Daniel, Gan, Tianjun, Gilbert, Emily, Gillon, Michaël, Gonzales, Erica, Hamann, Aaron, Hedges, Christina, Hocutt, Hannah, Hoffman, Kelsey, Horch, Elliott P., Horne, Keith, Howell, Steve, Hynes, Shane, Ireland, Michael, Irwin, Jonathan M., Isopi, Giovanni, Jensen, Eric L. N., Jehin, Emmanuël, Kaltenegger, Lisa, Kielkopf, John F., Kopparapu, Ravi, Lewis, Nikole, Lopez, Eric, Lissauer, Jack J., Mann, Andrew W., Mallia, Franco, Mandell, Avi, Matson, Rachel A., Mazeh, Tsevi, Monsue, Teresa, Moran, Sarah E., Moran, Vickie, Morley, Caroline V., Morris, Brett, Muirhead, Philip, Mukai, Koji, Mullally, Susan, Mullally, Fergal, Murray, Catriona, Narita, Norio, Palle, Enric, Pidhorodetska, Daria, Quinn, David, Relles, Howard, Rinehart, Stephen, Ritsko, Matthew, Rodriguez, Joseph E., Rowden, Pamela, Rowe, Jason F., Sebastian, Daniel, Sefako, Ramotholo, Shahaf, Sahar, Shporer, Avi, Reyes, Naylynn Tañón, Tenenbaum, Peter, Ting, Eric B., Twicken, Joseph D., van Belle, Gerard T., Vega, Laura, Volosin, Jeffrey, Walkowicz, Lucianne M., Youngblood, Allison, Kostov, Veselin B., Schlieder, Joshua E., Barclay, Thomas, Quintana, Elisa V., Colón, Knicole D., Brande, Jonathan, Collins, Karen A., Feinstein, Adina D., Hadden, Samuel, Kane, Stephen R., Kreidberg, Laura, Kruse, Ethan, Lam, Christopher, Matthews, Elisabeth, Montet, Benjamin T., Pozuelos, Francisco J., Stassun, Keivan G., Winters, Jennifer G., Ricker, George, Vanderspek, Roland, Latham, David, Seager, Sara, Winn, Joshua, Jenkins, Jon M., Afanasev, Dennis, Armstrong, James J. D., Arney, Giada, Boyd, Patricia, Barentsen, Geert, Barkaoui, Khalid, Batalha, Natalie E., Beichman, Charles, Bayliss, Daniel, Burke, Christopher, Burdanov, Artem, Cacciapuoti, Luca, Carson, Andrew, Charbonneau, David, Christiansen, Jessie, Ciardi, David, Clampin, Mark, Collins, Kevin I., Conti, Dennis M., Coughlin, Jeffrey, Covone, Giovanni, Crossfield, Ian, Delrez, Laetitia, Domagal-Goldman, Shawn, Dressing, Courtney, Ducrot, Elsa, Essack, Zahra, Everett, Mark E., Fauchez, Thomas, Foreman-Mackey, Daniel, Gan, Tianjun, Gilbert, Emily, Gillon, Michaël, Gonzales, Erica, Hamann, Aaron, Hedges, Christina, Hocutt, Hannah, Hoffman, Kelsey, Horch, Elliott P., Horne, Keith, Howell, Steve, Hynes, Shane, Ireland, Michael, Irwin, Jonathan M., Isopi, Giovanni, Jensen, Eric L. N., Jehin, Emmanuël, Kaltenegger, Lisa, Kielkopf, John F., Kopparapu, Ravi, Lewis, Nikole, Lopez, Eric, Lissauer, Jack J., Mann, Andrew W., Mallia, Franco, Mandell, Avi, Matson, Rachel A., Mazeh, Tsevi, Monsue, Teresa, Moran, Sarah E., Moran, Vickie, Morley, Caroline V., Morris, Brett, Muirhead, Philip, Mukai, Koji, Mullally, Susan, Mullally, Fergal, Murray, Catriona, Narita, Norio, Palle, Enric, Pidhorodetska, Daria, Quinn, David, Relles, Howard, Rinehart, Stephen, Ritsko, Matthew, Rodriguez, Joseph E., Rowden, Pamela, Rowe, Jason F., Sebastian, Daniel, Sefako, Ramotholo, Shahaf, Sahar, Shporer, Avi, Reyes, Naylynn Tañón, Tenenbaum, Peter, Ting, Eric B., Twicken, Joseph D., van Belle, Gerard T., Vega, Laura, Volosin, Jeffrey, Walkowicz, Lucianne M., and Youngblood, Allison

Abstract

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 Data Validation Report and the vetting package DAVE rule out common false-positive sources. These analyses, along with dedicated follow-up and the multiplicity of the system, lend confidence that the observed signals are caused by planets transiting L 98-59 and are not associated with other sources in the field. The L 98-59 system is interesting for a number of reasons: the host star is bright (V = 11.7 mag, K = 7.1 mag) and the planets are prime targets for further follow-up observations including precision radial-velocity mass measurements and future transit spectroscopy with the James Webb Space Telescope; the near-resonant configuration makes the system a laboratory to study planetary system dynamical evolution; and three planets of relatively similar size in the same system present an opportunity to study terrestrial planets where other variables (age, metallicity, etc.) can be held constant. L 98-59 will be observed in four more TESS sectors, which will provide a wealth of information on the three currently known planets and have the potential to reveal additional planets in the system.

37. The L 98-59 System: Three Transiting, Terrestrial-size Planets Orbiting a Nearby M Dwarf

Author

Kostov, Veselin B., Schlieder, Joshua E., Barclay, Thomas, Quintana, Elisa V., Colón, Knicole D., Brande, Jonathan, Collins, Karen A., Feinstein, Adina D., Hadden, Samuel, Kane, Stephen R., Kreidberg, Laura, Kruse, Ethan, Lam, Christopher, Matthews, Elisabeth, Montet, Benjamin T., Pozuelos, Francisco J., Stassun, Keivan G., Winters, Jennifer G., Ricker, George, Vanderspek, Roland, Latham, David, Seager, Sara, Winn, Joshua, Jenkins, Jon M., Afanasev, Dennis, Armstrong, James J. D., Arney, Giada, Boyd, Patricia, Barentsen, Geert, Barkaoui, Khalid, Batalha, Natalie E., Beichman, Charles, Bayliss, Daniel, Burke, Christopher, Burdanov, Artem, Cacciapuoti, Luca, Carson, Andrew, Charbonneau, David, Christiansen, Jessie, Ciardi, David, Clampin, Mark, Collins, Kevin I., Conti, Dennis M., Coughlin, Jeffrey, Covone, Giovanni, Crossfield, Ian, Delrez, Laetitia, Domagal-Goldman, Shawn, Dressing, Courtney, Ducrot, Elsa, Essack, Zahra, Everett, Mark E., Fauchez, Thomas, Foreman-Mackey, Daniel, Gan, Tianjun, Gilbert, Emily, Gillon, Michaël, Gonzales, Erica, Hamann, Aaron, Hedges, Christina, Hocutt, Hannah, Hoffman, Kelsey, Horch, Elliott P., Horne, Keith, Howell, Steve, Hynes, Shane, Ireland, Michael, Irwin, Jonathan M., Isopi, Giovanni, Jensen, Eric L. N., Jehin, Emmanuël, Kaltenegger, Lisa, Kielkopf, John F., Kopparapu, Ravi, Lewis, Nikole, Lopez, Eric, Lissauer, Jack J., Mann, Andrew W., Mallia, Franco, Mandell, Avi, Matson, Rachel A., Mazeh, Tsevi, Monsue, Teresa, Moran, Sarah E., Moran, Vickie, Morley, Caroline V., Morris, Brett, Muirhead, Philip, Mukai, Koji, Mullally, Susan, Mullally, Fergal, Murray, Catriona, Narita, Norio, Palle, Enric, Pidhorodetska, Daria, Quinn, David, Relles, Howard, Rinehart, Stephen, Ritsko, Matthew, Rodriguez, Joseph E., Rowden, Pamela, Rowe, Jason F., Sebastian, Daniel, Sefako, Ramotholo, Shahaf, Sahar, Shporer, Avi, Reyes, Naylynn Tañón, Tenenbaum, Peter, Ting, Eric B., Twicken, Joseph D., van Belle, Gerard T., Vega, Laura, Volosin, Jeffrey, Walkowicz, Lucianne M., Youngblood, Allison, Kostov, Veselin B., Schlieder, Joshua E., Barclay, Thomas, Quintana, Elisa V., Colón, Knicole D., Brande, Jonathan, Collins, Karen A., Feinstein, Adina D., Hadden, Samuel, Kane, Stephen R., Kreidberg, Laura, Kruse, Ethan, Lam, Christopher, Matthews, Elisabeth, Montet, Benjamin T., Pozuelos, Francisco J., Stassun, Keivan G., Winters, Jennifer G., Ricker, George, Vanderspek, Roland, Latham, David, Seager, Sara, Winn, Joshua, Jenkins, Jon M., Afanasev, Dennis, Armstrong, James J. D., Arney, Giada, Boyd, Patricia, Barentsen, Geert, Barkaoui, Khalid, Batalha, Natalie E., Beichman, Charles, Bayliss, Daniel, Burke, Christopher, Burdanov, Artem, Cacciapuoti, Luca, Carson, Andrew, Charbonneau, David, Christiansen, Jessie, Ciardi, David, Clampin, Mark, Collins, Kevin I., Conti, Dennis M., Coughlin, Jeffrey, Covone, Giovanni, Crossfield, Ian, Delrez, Laetitia, Domagal-Goldman, Shawn, Dressing, Courtney, Ducrot, Elsa, Essack, Zahra, Everett, Mark E., Fauchez, Thomas, Foreman-Mackey, Daniel, Gan, Tianjun, Gilbert, Emily, Gillon, Michaël, Gonzales, Erica, Hamann, Aaron, Hedges, Christina, Hocutt, Hannah, Hoffman, Kelsey, Horch, Elliott P., Horne, Keith, Howell, Steve, Hynes, Shane, Ireland, Michael, Irwin, Jonathan M., Isopi, Giovanni, Jensen, Eric L. N., Jehin, Emmanuël, Kaltenegger, Lisa, Kielkopf, John F., Kopparapu, Ravi, Lewis, Nikole, Lopez, Eric, Lissauer, Jack J., Mann, Andrew W., Mallia, Franco, Mandell, Avi, Matson, Rachel A., Mazeh, Tsevi, Monsue, Teresa, Moran, Sarah E., Moran, Vickie, Morley, Caroline V., Morris, Brett, Muirhead, Philip, Mukai, Koji, Mullally, Susan, Mullally, Fergal, Murray, Catriona, Narita, Norio, Palle, Enric, Pidhorodetska, Daria, Quinn, David, Relles, Howard, Rinehart, Stephen, Ritsko, Matthew, Rodriguez, Joseph E., Rowden, Pamela, Rowe, Jason F., Sebastian, Daniel, Sefako, Ramotholo, Shahaf, Sahar, Shporer, Avi, Reyes, Naylynn Tañón, Tenenbaum, Peter, Ting, Eric B., Twicken, Joseph D., van Belle, Gerard T., Vega, Laura, Volosin, Jeffrey, Walkowicz, Lucianne M., and Youngblood, Allison

Abstract

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 Data Validation Report and the vetting package DAVE rule out common false-positive sources. These analyses, along with dedicated follow-up and the multiplicity of the system, lend confidence that the observed signals are caused by planets transiting L 98-59 and are not associated with other sources in the field. The L 98-59 system is interesting for a number of reasons: the host star is bright (V = 11.7 mag, K = 7.1 mag) and the planets are prime targets for further follow-up observations including precision radial-velocity mass measurements and future transit spectroscopy with the James Webb Space Telescope; the near-resonant configuration makes the system a laboratory to study planetary system dynamical evolution; and three planets of relatively similar size in the same system present an opportunity to study terrestrial planets where other variables (age, metallicity, etc.) can be held constant. L 98-59 will be observed in four more TESS sectors, which will provide a wealth of information on the three currently known planets and have the potential to reveal additional planets in the system.

38. Examining Differences in Long-Term Weight Loss Outcomes After Bariatric Surgery: The Role of Romantic Relationship Status.

Author

Ferber, Megan, Hecht, Leah M., Martens, Kellie M., Hamann, Aaron, Carlin, Arthur M., and Miller-Matero, Lisa R.

Subjects
*WEIGHT loss, *RELATIONSHIP status, *GASTRIC bypass, *BARIATRIC surgery, *PATIENT experience, *BODY mass index
Abstract

Introduction: This study tested for differences based on relationship status at the time of surgery in baseline body mass index (BMI), weight loss outcomes (change in BMI [ΔBMI], percent total weight loss [%TWL], percent excess weight loss [%EWL]), and rates of successful weight loss (defined as ≥50%EWL) up to 4-year postbariatric surgery. Method: Data came from a secondary analysis of patients (N = 492) who were up to 4-year postsurgery and completed a presurgical psychological evaluation and postsurgical survey. Results: Sixty-nine percent of participants were patients in committed relationships and 31% were single/divorced/widowed patients. Single patients had higher presurgical BMIs than those who were partnered (t = 2.28, p =.02). There were no differences between those who were partnered and singles regarding ΔBMI and %TWL, although singles had smaller %EWL (t = −2.08, p =.04), which became nonsignificant after controlling for covariates. Most participants had successful weight loss (76.8%); however, this was not related to romantic relationship status. Discussion: The results suggest those who were partnered undergo surgery at better-starting weights than singles and maintain this advantage in the long term. Providers working with patients considering bariatric surgery could inquire about how their romantic and social relationships play a part in their decision-making process. Public Significance Statement: Partnered patients undergo surgery at lower BMIs compared to single patients. No differences emerge based on relationship status in weight loss outcomes. The majority of patients experience successful weight loss (≥50% excess weight loss). [ABSTRACT FROM AUTHOR]

Published
2024
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39. Hazardous Alcohol Use in the Four Years Following Bariatric Surgery.

Author

Miller-Matero LR, Orlovskaia J, Hecht LM, Braciszewski JM, Martens KM, Hamann A PsyD, and Carlin AM

Subjects
Gastrectomy methods, Humans, Retrospective Studies, Treatment Outcome, Weight Loss, Bariatric Surgery, Gastric Bypass methods, Obesity, Morbid epidemiology, Obesity, Morbid surgery
Abstract

The purpose of this study was to estimate the prevalence of hazardous drinking in the four years after bariatric surgery and investigate whether there are differences between those undergoing Roux-en-Y gastric bypass and sleeve gastrectomy. Participants (N = 564) who underwent bariatric surgery between 2014 and 2017 completed a survey regarding post-surgical alcohol use. The rate of alcohol use following bariatric surgery was significantly higher among those between 1- and 4-years post-surgery compared to those less than 1-year post-surgery. Of those who were consuming alcohol at the time of participation, 16.1% had scores indicative of hazardous drinking. The rate of hazardous drinking among those 3-4 years post-surgery was greater than those less than 1-year post-surgery with 33.3% of patients engaging in hazardous drinking at 3-4 years post-surgery. Patients undergoing sleeve gastrectomy had similar rates of hazardous drinking as RYGB (16.3% vs. 15.7%). Thus, findings showed that rates of hazardous drinking were higher among those further removed from bariatric surgery and patients undergoing sleeve gastrectomy appeared to have similar rates of hazardous drinking as those who underwent RYGB. Results suggest a need for monitoring of alcohol use for all patients pursuing bariatric surgery, regardless of surgery type.

Published
2022
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