Search

Your search keyword '"Rubenzahl, R A."' showing total 11 results
Start Over Author "Rubenzahl, R A."
11 results on '"Rubenzahl, R A."'

1. Radial velocity confirmation of a hot super-Neptune discovered by TESS with a warm Saturn-mass companion

Author

Knudstrup, E., Gandolfi, D., Nowak, G., Persson, C. M., Furlan, E., Livingston, J., Matthews, E., Lundkvist, M. S., Winther, M. L., Rørsted, J. L., Albrecht, S. H., Goffo, E., Carleo, I., Deeg, H. J., Collins, K. A., Narita, N., Isaacson, H., Redfield, S., Dai, F., Hirano, T., Murphy, J. M. Akana, Beard, C., Buchhave, L. A., Cary, S., Chontos, A., Crossfield, I., Cochran, W. D., Conti, D., Dalba, P. A., Esposito, M., Fajardo-Acosta, S., Giacalone, S., Grunblatt, S. K., Guerra, P., Hatzes, A. P., Holcomb, R., Horta, F. G., Howard, A. W., Huber, D., Jenkins, J. M., Kabáth, P., Kane, S., Korth, J., Lam, K. W. F., Lester, K. V., Matson, R., McLeod, K. K., Orell-Miquel, J., Murgas, F., Palle, E., Polanski, A. S., Ricker, G., Robertson, P., Rubenzahl, R., Schlieder, J E., Seager, S., Smith, A. M. S., Tenenbaum, P., Turtelboom, E., Vanderspek, R., Weiss, L., and Winn, J.

Subjects
Astrophysics - Earth and Planetary Astrophysics
Abstract

We report the discovery and confirmation of the planetary system TOI-1288. This late G dwarf harbours two planets: TOI-1288 b and TOI-1288 c. We combine TESS space-borne and ground-based transit photometry with HARPS-N and HIRES high-precision Doppler measurements, which we use to constrain the masses of both planets in the system and the radius of planet b. TOI-1288~b has a period of $2.699835^{+0.000004}_{-0.000003}$ d, a radius of $5.24 \pm 0.09$ R$_\oplus$, and a mass of $42 \pm 3$ M$_\oplus$, making this planet a hot transiting super-Neptune situated right in the Neptunian desert. This desert refers to a paucity of Neptune-sized planets on short period orbits. Our 2.4-year-long Doppler monitoring of TOI-1288 revealed the presence of a Saturn-mass planet on a moderately eccentric orbit ($0.13^{+0.07}_{-0.09}$) with a minimum mass of $84 \pm 7$ M$_\oplus$ and a period of $443^{+11}_{-13}$ d. The 5 sectors worth of TESS data do not cover our expected mid-transit time for TOI-1288 c, and we do not detect a transit for this planet in these sectors., Comment: 16 pages, 17 figures, under review MNRAS

Published
2022
Full Text
View/download PDF

2. The young HD 73583 (TOI-560) planetary system: Two 10-M$_\oplus$ mini-Neptunes transiting a 500-Myr-old, bright, and active K dwarf

Author

Barragán, O., Armstrong, D. J., Gandolfi, D., Carleo, I., Vidotto, A. A., D'Angelo, C. Villarreal, Oklopčić, A., Isaacson, H., Oddo, D., Collins, K., Fridlund, M., Sousa, S. G., Persson, C. M., Hellier, C., Howell, S., Howard, A., Redfield, S., Eisner, N., Georgieva, I. Y., Dragomir, D., Bayliss, D., Nielsen, L. D., Klein, B., Aigrain, S., Zhang, M., Teske, J., Twicken, J D., Jenkins, J., Esposito, M., Van Eylen, V., Rodler, F., Adibekyan, V., Alarcon, J., Anderson, D. R., Murphy, J. M. Akana, Barrado, D., Barros, S. C. C., Benneke, B., Bouchy, F., Bryant, E. M., Butler, P., Burt, J., Cabrera, J., Casewell, S., Chaturvedi, P., Cloutier, R., Cochran, W. D., Crane, J., Crossfield, I., Crouzet, N., Collins, K. I., Dai, F., Deeg, H. J., Deline, A., Demangeon, O. D. S., Dumusque, X., Figueira, P., Furlan, E., Gnilka, C., Goad, M. R., Goffo, E., Gutiérrez-Canales, F., Hadjigeorghiou, A., Hartman, Z., Hatzes, A. P., Harris, M., Henderson, B., Hirano, T., Hojjatpanah, S., Hoyer, S., Kabáth, P., Korth, J., Lillo-Box, J., Luque, R., Marmier, M., Močnik, T., Muresan, A., Murgas, F., Nagel, E., Osborne, H. L. M., Osborn, A., Osborn, H. P., Palle, E., Raimbault, M., Ricker, G. R., Rubenzahl, R A., Stockdale, C., Santos, N. C., Scott, N., Schwarz, R. P., Shectman, S., Seager, S., Ségransan, D., Serrano, L. M., Skarka, M., Smith, A. M. S., Šubjak, J., Tan, T. G., Udry, S., Watson, C., Wheatley, P. J., West, R., Winn, J. N., Wang, S. X., Wolfgang, A., and Ziegler, C.

Subjects
Astrophysics - Earth and Planetary Astrophysics, Astrophysics - Solar and Stellar Astrophysics
Abstract

We present the discovery and characterisation of two transiting planets observed by \textit{TESS} in the light curves of the young and bright (V=9.67) star HD73583 (TOI-560). We perform an intensive spectroscopic and photometric space- and ground-based follow-up in order to confirm and characterise the system. We found that HD73583 is a young ($\sim 500$~Myr) active star with a rotational period of $12.08 \pm 0.11 $\,d, and a mass and radius of $ 0.73 \pm 0.02 M_\odot$ and $0.65 \pm 0.02 R_\odot$, respectively. HD73583 b ($P_b=6.3980420 _{ - 0.0000062 }^{+0.0000067}$ d) has a mass and radius of $10.2 _{-3.1}^{+3.4} M_\oplus$ and$2.79 \pm 0.10 R_\oplus$, respectively, that gives a density of $2.58 _{-0.81}^{ 0.95} {\rm g\,cm^{-3}}$. HD73583 c ($P_c= 18.87974 _{-0.00074 }^{+0.00086}$) has a mass and radius of $9.7_{-1.7} ^ {+1.8} M_\oplus$ and $2.39_{-0.09}^{+0.10} R_\oplus$, respectively, this translates to a density of $3.88 _{-0.80}^{+0.91} {\rm g\,cm^{-3}}$. Both planets are consistent with worlds made of a solid core surrounded by a volatile envelope. Because of their youth and host star brightness, they both are excellent candidates to perform transmission spectroscopy studies. We expect ongoing atmospheric mass-loss for both planets caused by stellar irradiation. We estimate that the detection of evaporating signatures on H and He would be challenging, but doable with present and future instruments., Comment: Accepted for publication in MNRAS

Published
2021
Full Text
View/download PDF

3. HD207897 b: A dense sub-Neptune transiting a nearby and bright K-type star

Author

Heidari, N., Boisse, I., Orell-Mique, J., Hebrard, G., Acuna, L., Hara, N. C., Lillo-Box, J., Eastman, J. D., Arnold, L., Astudillo-Defru, N., Adibekyan, V., Bieryla, A., Bonfils, X., Bouchy, F., Barclay, T., Brasseur, C. E., Borgniet, S., Bourrier, V., Buchhave, L., Behmard, A., Beard, C., Batalha, N. M ., Courcol, B., Cortes-Zuleta, P., Collins, K., Carmona, A., Crossfield, I. J. M., Chontos, A., Delfosse, X., Dalal, S., Deleuil, M., Demangeon, O. D. S., Diaz, R. F., Dumusque, X., Daylan, T., Dragomir, D., Mena, E. Delgado, Dressing, C., Dai, F., Dalba, P. A., Ehrenreich, D., Forveille, T., Fulton, B., Fetherolf, T., Gaisne, G., Giacalone, S., Riazi, N., Hoyer, S., Hobson, M. J., Howard, A. W., Huber, D., Hill, M. L., Hirsch, L. A., Isaacson, H., Jenkins, J., Kane, S. R., Kiefer, F., Luque, R., Latham, D. W., Lubin, J., Lopez, T., Mousis, O., Moutou, C., Montagnier, G., Mignon, L., Mayo, A., Mocnik, T., Murphy, J. M. A., Palle, E., Pepe, F., Petigura, E. A., Rey, J., Ricker, G., Robertson, P., Roy, A., Rubenzahl, R. A., Rosenthal, L. J., Santerne, A., Santos, N. C., Sousa, S. G., Stassun, K. G., Stalport, M., Scarsdale, N., Strom, P. A., Seager, S., Segransan, D., Tenenbaum, P., Tronsgaard, R., Udry, S., Vanderspek, R., Vakili, F., Winn, J., and Weiss, L. M.

Subjects
Astrophysics - Earth and Planetary Astrophysics
Abstract

We present the discovery and characterization of a transiting sub-Neptune orbiting with a 16.20 day period around a nearby (28 pc) and bright(V=8.37) K0V star HD207897 (TOI-1611). This discovery is based on photometric measurements from the Transiting Exoplanet Survey Satellite(TESS) mission and radial velocity (RV) observations from the SOPHIE, Automated Planet Finder (APF) and HIRES high precision spectrographs. We used EXOFASTv2 for simultaneously modeling the parameters of the planet and its host star, combining photometric and RV data to determine the planetary system parameters. We show that the planet has a radius of 2.50+/-0.08 RE and a mass of either 14.4+/-1.6 ME or 15.9+/-1.6 ME with nearly equal probability; the two solutions correspond to two possibilities for the stellar activity period. Hence, the density is either 5.1+/-0.7 g cm^-3 or 5.5^{+0.8}_{-0.7} g cm^-3, making it one of the relatively rare dense sub-Neptunes. The existence of such a dense planet at only 0.12 AU from its host star is unusual in the currently observed sub-Neptune (2

Published
2021
Full Text
View/download PDF

4. A Second Planet Transiting LTT 1445A and a Determination of the Masses of Both Worlds

Author

Winters, J. G., Cloutier, R., Medina, A. A., Irwin, J. M., Charbonneau, D., Astudillo-Defru, N., Bonfils, X., Howard, A. W., Isaacson, H., Bean, J. L., Seifahrt, A., Teske, J. K., Eastman, J. D., Twicken, J. D., Collins, K. A., Jensen, E. L. N., Quinn, S. N., Payne, M. J., Kristiansen, M. H., Spencer, A., Vanderburg, A., Zechmeister, M., Weiss, L. M., Wang, S. X., Wang, G., Udry, S., Terentev, I. A., Sturmer, J., Stefansson, G., Shporer, A., Shectman, S., Sefako, R., Schwengeler, H. M., Schwarz, R. P., Scarsdale, N., Rubenzahl, R. A., Roy, A., Rosenthal, L. J., Robertson, P., Petigura, E. A., Pepe, F., Omohundro, M., Murphy, J. M. A., Murgas, F., Movcnik, T., Montet, B. T., Mennickent, R., Mayo, A. W., Massey, B., Lubin, J., Lovis, C., Lewin, P., Kasper, D., Kane, S. R., Jenkins, J. M., Huber, D., Horne, K., Hill, M. L., Gorrini, P., Giacalone, S., Fulton, B., Forveille, T., Figueira, P., Fetherolf, T., Dressing, C., Diaz, R. F., Delfosse, X., Dalba, P. A., Dai, F., Cortes, C. C., Crossfield, I. J. M., Crane, J. D., Conti, D. M., Collins, K. I., Chontos, A., Butler, R. P., Brown, P., Brady, M., Behmard, A., Beard, C., Batalha, N. M., and Almenara, J. -M.

Subjects
Astrophysics - Earth and Planetary Astrophysics, Astrophysics - Solar and Stellar Astrophysics
Abstract

LTT 1445 is a hierarchical triple M-dwarf star system located at a distance of 6.86 parsecs. The primary star LTT 1445A (0.257 M_Sun) is known to host the transiting planet LTT 1445Ab with an orbital period of 5.4 days, making it the second closest known transiting exoplanet system, and the closest one for which the host is an M dwarf. Using TESS data, we present the discovery of a second planet in the LTT 1445 system, with an orbital period of 3.1 days. We combine radial velocity measurements obtained from the five spectrographs ESPRESSO, HARPS, HIRES, MAROON-X, and PFS to establish that the new world also orbits LTT 1445A. We determine the mass and radius of LTT 1445Ab to be 2.87+/-0.25 M_Earth and 1.304^{+0.067}_{-0.060} R_Earth, consistent with an Earth-like composition. For the newly discovered LTT 1445Ac, we measure a mass of 1.54^{+0.20}_{-0.19} M_Earth and a minimum radius of 1.15 R_Earth, but we cannot determine the radius directly as the signal-to-noise of our light curve permits both grazing and non-grazing configurations. Using MEarth photometry and ground-based spectroscopy, we establish that star C (0.161 M_Sun) is likely the source of the 1.4-day rotation period, and star B (0.215 M_Sun) has a likely rotation period of 6.7 days. We estimate a probable rotation period of 85 days for LTT 1445A. Thus, this triple M-dwarf system appears to be in a special evolutionary stage where the most massive M dwarf has spun down, the intermediate mass M dwarf is in the process of spinning down, while the least massive stellar component has not yet begun to spin down., Comment: Accepted to the Astronomical Journal. 4 tables, 10 figures; RV table available upon request

Published
2021
Full Text
View/download PDF

5. Constraints on the Emission of Gamma Rays from M31 with HAWC

Author

HAWC Collaboration, Albert, A., Alfaro, R., Alvarez, C., Arteaga-Velázquez, J. C., Arunbabu, K. P., Rojas, D. Avila, Solares, H. A. Ayala, Belmont-Moreno, E., BenZvi, S. Y., Brisbois, C., Caballero-Mora, K. S., Capistrán, T., Carramiñana, A., Casanova, S., Cotti, U., Cotzomi, J., de León, S. Coutiño, De la Fuente, E., de León, C., Dichiara, S., Dingus, B. L., DuVernois, M. A., Engel, K., Espinoza, C., Fleischhack, H., Fraija, N., Galván-Gámez, A., García-Aguilar, D., García-González, J. A., Garfias, F., González, M. M., Goodman, J. A., Harding, J. P., Hernandez, S., Hona, B., Huang, D., Hueyotl-Zahuantitla, F., Hüntemeyer, P., Iriarte, A., Jardin-Blicq, A., Joshi, V., Kieda, D., Lee, W. H., Vargas, H. León, Longinotti, A. L., Luis-Raya, G., Malone, K., Marinelli, S. S., Martinez, O., Martinez-Castellanos, I., Martínez-Castro, J., Matthews, J. A., Miranda-Romagnoli, P., Morales-Soto, J. A., Moreno, E., Mostafá, M., Nayerhoda, A., Nellen, L., Newbold, M., Noriega-Papaqui, R., Peisker, A., Pérez-Pérez, E. G., Ren, Z., Rho, C. D., Rosa-González, D., Rosenberg, M., Rubenzahl, R., Salazar, H., Greus, F. Salesa, Sandoval, A., Schneider, M., Sinnis, G., Smith, A. J., Springer, R. W., Surajbali, P., Tabachnick, E., Tibolla, O., Tollefson, K., Torres, I., Villaseñor, L., Wood, J., Yapici, T., Zepeda, A., and Zhou, H.

Subjects
Astrophysics - High Energy Astrophysical Phenomena
Abstract

Cosmic rays, along with stellar radiation and magnetic fields, are known to make up a significant fraction of the energy density of galaxies such as the Milky Way. When cosmic rays interact in the interstellar medium, they produce gamma-ray emission which provides an important indication of how the cosmic rays propagate. Gamma rays from the Andromeda Galaxy (M31), located 785 kpc away, provide a unique opportunity to study cosmic-ray acceleration and diffusion in a galaxy with a structure and evolution very similar to the Milky Way. Using 33 months of data from the High Altitude Water Cherenkov Observatory, we search for TeV gamma rays from the galactic plane of M31. We also investigate past and present evidence of galactic activity in M31 by searching for Fermi Bubble-like structures above and below the galactic nucleus. No significant gamma-ray emission is observed, so we use the null result to compute upper limits on the energy density of cosmic rays $>10$ TeV in M31. The computed upper limits are approximately ten times higher than expected from the extrapolation of the Fermi LAT results., Comment: Accepted for publication in ApJ

Published
2020
Full Text
View/download PDF

6. Radial velocity confirmation of a hot super-Neptune discovered by TESS with a warm Saturn–mass companion

Author

Knudstrup, E, Gandolfi, D, Nowak, G, Persson, C M, Furlan, E, Livingston, J, Matthews, E, Lundkvist, M S, Winther, M L, Rørsted, J L, Albrecht, S H, Goffo, E, Carleo, I, Deeg, H J, Collins, K A, Narita, N, Isaacson, H, Redfield, S, Dai, F, Hirano, T, Akana Murphy, J M, Beard, C, Buchhave, L A, Cary, S, Chontos, A, Crossfield, I, Cochran, W D, Conti, D, Dalba, P A, Esposito, M, Fajardo-Acosta, S, Giacalone, S, Grunblatt, S K, Guerra, P, Hatzes, A P, Holcomb, R, Horta, F G, Howard, A W, Huber, D, Jenkins, J M, Kabáth, P, Kane, S, Korth, J, Lam, K W F, Lester, K V, Matson, R, McLeod, K K, Orell-Miquel, J, Murgas, F, Palle, E, Polanski, A S, Ricker, G, Robertson, P, Rubenzahl, R, Schlieder, J E, Seager, S, Smith, A M S, Tenenbaum, P, Turtelboom, E, Vanderspek, R, Weiss, L, Winn, J, Knudstrup, E, Gandolfi, D, Nowak, G, Persson, C M, Furlan, E, Livingston, J, Matthews, E, Lundkvist, M S, Winther, M L, Rørsted, J L, Albrecht, S H, Goffo, E, Carleo, I, Deeg, H J, Collins, K A, Narita, N, Isaacson, H, Redfield, S, Dai, F, Hirano, T, Akana Murphy, J M, Beard, C, Buchhave, L A, Cary, S, Chontos, A, Crossfield, I, Cochran, W D, Conti, D, Dalba, P A, Esposito, M, Fajardo-Acosta, S, Giacalone, S, Grunblatt, S K, Guerra, P, Hatzes, A P, Holcomb, R, Horta, F G, Howard, A W, Huber, D, Jenkins, J M, Kabáth, P, Kane, S, Korth, J, Lam, K W F, Lester, K V, Matson, R, McLeod, K K, Orell-Miquel, J, Murgas, F, Palle, E, Polanski, A S, Ricker, G, Robertson, P, Rubenzahl, R, Schlieder, J E, Seager, S, Smith, A M S, Tenenbaum, P, Turtelboom, E, Vanderspek, R, Weiss, L, and Winn, J

Abstract

We report the discovery and confirmation of the planetary system TOI-1288. This late G dwarf harbours two planets: TOI-1288 b and TOI-1288 c. We combine TESS space-borne and ground-based transit photometry with HARPS-N and HIRES high-precision Doppler measurements, which we use to constrain the masses of both planets in the system and the radius of planet b. TOI-1288 b has a period of \2.699835^\+0.000004\\-0.000003\\ d, a radius of 5.24 ± 0.09 R⊕, and a mass of 42 ± 3 M⊕, making this planet a hot transiting super-Neptune situated right in the Neptunian desert. This desert refers to a paucity of Neptune-sized planets on short period orbits. Our 2.4-yr-long Doppler monitoring of TOI-1288 revealed the presence of a Saturn–mass planet on a moderately eccentric orbit (\0.13^\+0.07\\-0.09\\) with a minimum mass of 84 ± 7 M⊕ and a period of \443^\+11\\-13\\ d. The five sectors worth of TESS data do not cover our expected mid-transit time for TOI-1288 c, and we do not detect a transit for this planet in these sectors.

Published
2023

7. Radial velocity confirmation of a hot super-Neptune discovered by TESS with a warm Saturn–mass companion

Author

Knudstrup, E, primary, Gandolfi, D, additional, Nowak, G, additional, Persson, C M, additional, Furlan, E, additional, Livingston, J, additional, Matthews, E, additional, Lundkvist, M S, additional, Winther, M L, additional, Rørsted, J L, additional, Albrecht, S H, additional, Goffo, E, additional, Carleo, I, additional, Deeg, H J, additional, Collins, K A, additional, Narita, N, additional, Isaacson, H, additional, Redfield, S, additional, Dai, F, additional, Hirano, T, additional, Akana Murphy, J M, additional, Beard, C, additional, Buchhave, L A, additional, Cary, S, additional, Chontos, A, additional, Crossfield, I, additional, Cochran, W D, additional, Conti, D, additional, Dalba, P A, additional, Esposito, M, additional, Fajardo-Acosta, S, additional, Giacalone, S, additional, Grunblatt, S K, additional, Guerra, P, additional, Hatzes, A P, additional, Holcomb, R, additional, Horta, F G, additional, Howard, A W, additional, Huber, D, additional, Jenkins, J M, additional, Kabáth, P, additional, Kane, S, additional, Korth, J, additional, Lam, K W F, additional, Lester, K V, additional, Matson, R, additional, McLeod, K K, additional, Orell-Miquel, J, additional, Murgas, F, additional, Palle, E, additional, Polanski, A S, additional, Ricker, G, additional, Robertson, P, additional, Rubenzahl, R, additional, Schlieder, J E, additional, Seager, S, additional, Smith, A M S, additional, Tenenbaum, P, additional, Turtelboom, E, additional, Vanderspek, R, additional, Weiss, L, additional, and Winn, J, additional

Published
2022
Full Text
View/download PDF

8. HD 207897 b:A dense sub-Neptune transiting a nearby and bright K-type star

Author

Heidari, N., Boisse, I., Orell-Miquel, J., Hébrard, G., Acuña, L., Hara, N. C., Lillo-Box, J., Eastman, J. D., Arnold, L., Astudillo-Defru, N., Adibekyan, V., Bieryla, A., Bonfils, X., Bouchy, F., Barclay, T., Brasseur, C. E., Borgniet, S., Bourrier, V., Buchhave, L., Behmard, A., Beard, C., Batalha, N. M., Courcol, B., Cortés-Zuleta, P., Collins, K., Carmona, A., Crossfield, I. J.M., Chontos, A., Delfosse, X., Dalal, S., Deleuil, M., Demangeon, O. D.S., Diáz, R. F., Dumusque, X., Daylan, T., Dragomir, D., Delgado Mena, E., Dressing, C., Dai, F., Dalba, P. A., Ehrenreich, D., Forveille, T., Fulton, B., Fetherolf, T., Gaisné, G., Giacalone, S., Riazi, N., Hoyer, S., Hobson, M. J., Howard, A. W., Huber, D., Hill, M. L., Hirsch, L. A., Isaacson, H., Jenkins, J., Kane, S. R., Kiefer, F., Luque, R., Latham, D. W., Lubin, J., Lopez, T., Mousis, O., Moutou, C., Montagnier, G., Mignon, L., Mayo, A., Močnik, T., Murphy, J. M.A., Palle, E., Pepe, F., Petigura, E. A., Rey, J., Ricker, G., Robertson, P., Roy, A., Rubenzahl, R. A., Rosenthal, L. J., Santerne, A., Santos, N. C., Sousa, S. G., Stassun, K. G., Stalport, M., Scarsdale, N., Strøm, P. A., Seager, S., Segransan, D., Tenenbaum, P., Tronsgaard, R., Udry, S., Vanderspek, R., Vakili, F., Winn, J., Weiss, L. M., Heidari, N., Boisse, I., Orell-Miquel, J., Hébrard, G., Acuña, L., Hara, N. C., Lillo-Box, J., Eastman, J. D., Arnold, L., Astudillo-Defru, N., Adibekyan, V., Bieryla, A., Bonfils, X., Bouchy, F., Barclay, T., Brasseur, C. E., Borgniet, S., Bourrier, V., Buchhave, L., Behmard, A., Beard, C., Batalha, N. M., Courcol, B., Cortés-Zuleta, P., Collins, K., Carmona, A., Crossfield, I. J.M., Chontos, A., Delfosse, X., Dalal, S., Deleuil, M., Demangeon, O. D.S., Diáz, R. F., Dumusque, X., Daylan, T., Dragomir, D., Delgado Mena, E., Dressing, C., Dai, F., Dalba, P. A., Ehrenreich, D., Forveille, T., Fulton, B., Fetherolf, T., Gaisné, G., Giacalone, S., Riazi, N., Hoyer, S., Hobson, M. J., Howard, A. W., Huber, D., Hill, M. L., Hirsch, L. A., Isaacson, H., Jenkins, J., Kane, S. R., Kiefer, F., Luque, R., Latham, D. W., Lubin, J., Lopez, T., Mousis, O., Moutou, C., Montagnier, G., Mignon, L., Mayo, A., Močnik, T., Murphy, J. M.A., Palle, E., Pepe, F., Petigura, E. A., Rey, J., Ricker, G., Robertson, P., Roy, A., Rubenzahl, R. A., Rosenthal, L. J., Santerne, A., Santos, N. C., Sousa, S. G., Stassun, K. G., Stalport, M., Scarsdale, N., Strøm, P. A., Seager, S., Segransan, D., Tenenbaum, P., Tronsgaard, R., Udry, S., Vanderspek, R., Vakili, F., Winn, J., and Weiss, L. M.

Abstract

We present the discovery and characterization of a transiting sub-Neptune that orbits the nearby (28 pc) and bright (V = 8.37) K0V star HD 207897 (TOI-1611) with a 16.20-day period. This discovery is based on photometric measurements from the Transiting Exoplanet Survey Satellite mission and radial velocity (RV) observations from the SOPHIE, Automated Planet Finder, and HIRES high-precision spectrographs. We used EXOFASTv2 to model the parameters of the planet and its host star simultaneously, combining photometric and RV data to determine the planetary system parameters. We show that the planet has a radius of 2.50 ± 0.08 RE and a mass of either 14.4 ± 1.6 ME or 15.9 ± 1.6 ME with nearly equal probability. The two solutions correspond to two possibilities for the stellar activity period. The density accordingly is either 5.1 ± 0.7 g cm3 or 5.50.7+0.8 g cm3, making it one of the relatively rare dense sub-Neptunes. The existence of this dense planet at only 0.12 AU from its host star is unusual in the currently observed sub-Neptune (2 < RE < 4) population. The most likely scenario is that this planet has migrated to its current position.

Published
2022

9. The young HD 73583 (TOI-560) planetary system: two 10-M⊕ mini-Neptunes transiting a 500-Myr-old, bright, and active K dwarf

Author

Barragán, O, primary, Armstrong, D J, additional, Gandolfi, D, additional, Carleo, I, additional, Vidotto, A A, additional, Villarreal D’Angelo, C, additional, Oklopčić, A, additional, Isaacson, H, additional, Oddo, D, additional, Collins, K, additional, Fridlund, M, additional, Sousa, S G, additional, Persson, C M, additional, Hellier, C, additional, Howell, S, additional, Howard, A, additional, Redfield, S, additional, Eisner, N, additional, Georgieva, I Y, additional, Dragomir, D, additional, Bayliss, D, additional, Nielsen, L D, additional, Klein, B, additional, Aigrain, S, additional, Zhang, M, additional, Teske, J, additional, Twicken, J D, additional, Jenkins, J, additional, Esposito, M, additional, Van Eylen, V, additional, Rodler, F, additional, Adibekyan, V, additional, Alarcon, J, additional, Anderson, D R, additional, Akana Murphy, J M, additional, Barrado, D, additional, Barros, S C C, additional, Benneke, B, additional, Bouchy, F, additional, Bryant, E M, additional, Butler, R P, additional, Burt, J, additional, Cabrera, J, additional, Casewell, S, additional, Chaturvedi, P, additional, Cloutier, R, additional, Cochran, W D, additional, Crane, J, additional, Crossfield, I, additional, Crouzet, N, additional, Collins, K I, additional, Dai, F, additional, Deeg, H J, additional, Deline, A, additional, Demangeon, O D S, additional, Dumusque, X, additional, Figueira, P, additional, Furlan, E, additional, Gnilka, C, additional, Goad, M R, additional, Goffo, E, additional, Gutiérrez-Canales, F, additional, Hadjigeorghiou, A, additional, Hartman, Z, additional, Hatzes, A P, additional, Harris, M, additional, Henderson, B, additional, Hirano, T, additional, Hojjatpanah, S, additional, Hoyer, S, additional, Kabáth, P, additional, Korth, J, additional, Lillo-Box, J, additional, Luque, R, additional, Marmier, M, additional, Močnik, T, additional, Muresan, A, additional, Murgas, F, additional, Nagel, E, additional, Osborne, H L M, additional, Osborn, A, additional, Osborn, H P, additional, Palle, E, additional, Raimbault, M, additional, Ricker, G R, additional, Rubenzahl, R A, additional, Stockdale, C, additional, Santos, N C, additional, Scott, N, additional, Schwarz, R P, additional, Shectman, S, additional, Seager, S, additional, Ségransan, D, additional, Serrano, L M, additional, Skarka, M, additional, Smith, A M S, additional, Šubjak, J, additional, Tan, T G, additional, Udry, S, additional, Watson, C, additional, Wheatley, P J, additional, West, R, additional, Winn, J N, additional, Wang, S X, additional, Wolfgang, A, additional, and Ziegler, C, additional

Published
2022
Full Text
View/download PDF

10. HD 207897 b: A dense sub-Neptune transiting a nearby and bright K-type star

Author

Heidari, N., primary, Boisse, I., additional, Orell-Miquel, J., additional, Hébrard, G., additional, Acuña, L., additional, Hara, N. C., additional, Lillo-Box, J., additional, Eastman, J. D., additional, Arnold, L., additional, Astudillo-Defru, N., additional, Adibekyan, V., additional, Bieryla, A., additional, Bonfils, X., additional, Bouchy, F., additional, Barclay, T., additional, Brasseur, C. E., additional, Borgniet, S., additional, Bourrier, V., additional, Buchhave, L., additional, Behmard, A., additional, Beard, C., additional, Batalha, N. M., additional, Courcol, B., additional, Cortés-Zuleta, P., additional, Collins, K., additional, Carmona, A., additional, Crossfield, I. J. M., additional, Chontos, A., additional, Delfosse, X., additional, Dalal, S., additional, Deleuil, M., additional, Demangeon, O. D. S., additional, Díaz, R. F., additional, Dumusque, X., additional, Daylan, T., additional, Dragomir, D., additional, Delgado Mena, E., additional, Dressing, C., additional, Dai, F., additional, Dalba, P. A., additional, Ehrenreich, D., additional, Forveille, T., additional, Fulton, B., additional, Fetherolf, T., additional, Gaisné, G., additional, Giacalone, S., additional, Riazi, N., additional, Hoyer, S., additional, Hobson, M. J., additional, Howard, A. W., additional, Huber, D., additional, Hill, M. L., additional, Hirsch, L. A., additional, Isaacson, H., additional, Jenkins, J., additional, Kane, S. R., additional, Kiefer, F., additional, Luque, R., additional, Latham, D. W., additional, Lubin, J., additional, Lopez, T., additional, Mousis, O., additional, Moutou, C., additional, Montagnier, G., additional, Mignon, L., additional, Mayo, A., additional, Močnik, T., additional, Murphy, J. M. A., additional, Palle, E., additional, Pepe, F., additional, Petigura, E. A., additional, Rey, J., additional, Ricker, G., additional, Robertson, P., additional, Roy, A., additional, Rubenzahl, R. A., additional, Rosenthal, L. J., additional, Santerne, A., additional, Santos, N. C., additional, Sousa, S. G., additional, Stassun, K. G., additional, Stalport, M., additional, Scarsdale, N., additional, Strøm, P. A., additional, Seager, S., additional, Segransan, D., additional, Tenenbaum, P., additional, Tronsgaard, R., additional, Udry, S., additional, Vanderspek, R., additional, Vakili, F., additional, Winn, J., additional, and Weiss, L. M., additional

Published
2022
Full Text
View/download PDF

11. Constraints on the Emission of Gamma-Rays from M31 with HAWC

Author

Albert, A., primary, Alfaro, R., additional, Alvarez, C., additional, Arteaga-Velázquez, J. C., additional, Arunbabu, K. P., additional, Avila Rojas, D., additional, Ayala Solares, H. A., additional, Belmont-Moreno, E., additional, BenZvi, S. Y., additional, Brisbois, C., additional, Caballero-Mora, K. S., additional, Capistrán, T., additional, Carramiñana, A., additional, Casanova, S., additional, Cotti, U., additional, Cotzomi, J., additional, Coutiño de León, S., additional, De la Fuente, E., additional, de León, C., additional, Dichiara, S., additional, Dingus, B. L., additional, DuVernois, M. A., additional, Engel, K., additional, Espinoza, C., additional, Fleischhack, H., additional, Fraija, N., additional, Galván-Gámez, A., additional, García-Aguilar, D., additional, García-González, J. A., additional, Garfias, F., additional, González, M. M., additional, Goodman, J. A., additional, Harding, J. P., additional, Hernandez, S., additional, Hona, B., additional, Huang, D., additional, Hueyotl-Zahuantitla, F., additional, Hüntemeyer, P., additional, Iriarte, A., additional, Jardin-Blicq, A., additional, Joshi, V., additional, Kieda, D., additional, Lee, W. H., additional, León Vargas, H., additional, Longinotti, A. L., additional, Luis-Raya, G., additional, Malone, K., additional, Marinelli, S. S., additional, Martinez, O., additional, Martinez-Castellanos, I., additional, Martínez-Castro, J., additional, Matthews, J. A., additional, Miranda-Romagnoli, P., additional, Morales-Soto, J. A., additional, Moreno, E., additional, Mostafá, M., additional, Nayerhoda, A., additional, Nellen, L., additional, Newbold, M., additional, Noriega-Papaqui, R., additional, Peisker, A., additional, Pérez-Pérez, E. G., additional, Ren, Z., additional, Rho, C. D., additional, Rosa-González, D., additional, Rosenberg, M., additional, Rubenzahl, R., additional, Salazar, H., additional, Salesa Greus, F., additional, Sandoval, A., additional, Schneider, M., additional, Sinnis, G., additional, Smith, A. J., additional, Springer, R. W., additional, Surajbali, P., additional, Tabachnick, E., additional, Tibolla, O., additional, Tollefson, K., additional, Torres, I., additional, Villaseñor, L., additional, Wood, J., additional, Yapici, T., additional, Zepeda, A., additional, and Zhou, H., additional

Published
2020
Full Text
View/download PDF

Catalog

Books, media, physical & digital resources
See catalog results