8 results on '"Antoniciello, Giuliano"'
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2. The discovery and mass measurement of a new ultra-short-period planet: EPIC~228732031b
- Author
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Dai, Fei, Winn, Joshua N., Gandolfi, Davide, Wang, Sharon X., Teske, Johanna K., Burt, Jennifer, Albrecht, Simon, BarragÁn, Oscar, Cochran, William D., Endl, Michael, Fridlund, Malcolm, Hatzes, Artie P., Hirano, Teruyuki, Hirsch, Lea A., Johnson, Marshall C., Justesen, Anders Bo, Livingston, John, Persson, Carina M., Prieto-arranz, Jorge, Vanderburg, Andrew, Alonso, Roi, Antoniciello, Giuliano, Arriagada, Pamela, Butler, R. p., Cabrera, Juan, Crane, Jeffrey D., Cusano, Felice, Csizmadia, SzilÁrd, Deeg, Hans, Dieterich, Sergio B., EigmÜller, Philipp, Erikson, Anders, Everett, Mark E., Fukui, Akihiko, Grziwa, Sascha, Guenther, Eike W., Henry, Gregory W., Howell, Steve B., Johnson, John Asher, Korth, Judith, Kuzuhara, Masayuki, Narita, Norio, Nespral, David, Nowak, Grzegorz, Palle, Enric, PÄtzold, Martin, Rauer, Heike, RodrÍguez, Pilar MontaÑÉs, Shectman, Stephen A., Smith, Alexis M. s., Thompson, Ian B., Van Eylen, Vincent, Williamson, Michael W., and Wittenmyer, Robert A.
- Subjects
Astrophysics - Earth and Planetary Astrophysics - Abstract
We report the discovery of a new ultra-short-period planet and summarize the properties of all such planets for which the mass and radius have been measured. The new planet, EPIC~228732031b, was discovered in {\it K2} Campaign 10. It has a radius of 1.81$^{+0.16}_{-0.12}~R_{\oplus}$ and orbits a G dwarf with a period of 8.9 hours. Radial velocities obtained with Magellan/PFS and TNG/HARPS-N show evidence for stellar activity along with orbital motion. We determined the planetary mass using two different methods: (1) the "floating chunk offset" method, based only on changes in velocity observed on the same night, and (2) a Gaussian process regression based on both the radial-velocity and photometric time series. The results are consistent and lead to a mass measurement of $6.5 \pm 1.6~M_{\oplus}$, and a mean density of $6.0^{+3.0}_{-2.7}$~g~cm$^{-3}$., Comment: 24 pages, 14 figures, accepted to AJ
- Published
- 2017
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3. The transiting multi-planet system HD3167: a 5.7 MEarth Super-Earth and a 8.3 MEarth mini-Neptune
- Author
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Gandolfi, Davide, Barragán, Oscar, Hatzes, Artie P., Fridlund, Malcolm, Fossati, Luca, Donati, Paolo, Johnson, Marshall C., Nowak, Grzegorz, Prieto-Arranz, Jorge, Albrecht, Simon, Dai, Fei, Deeg, Hans, Endl, Michael, Grziwa, Sascha, Hjorth, Maria, Korth, Judith, Nespral, David, Saario, Joonas, Smith, Alexis M. S., Antoniciello, Giuliano, Alarcon, Javier, Bedell, Megan, Blay, Pere, Brems, Stefan S., Cabrera, Juan, Csizmadia, Szilard, Cusano, Felice, Cochran, William D., Eigmüller, Philipp, Erikson, Anders, Hernández, Jonay I. González, Guenther, Eike W., Hirano, Teruyuki, Mascareño, Alejandro S., Narita, Norio, Palle, Enric, Parviainen, Hannu, Pätzold, Martin, Persson, Carina M., Rauer, Heike, Saviane, Ivo, Schmidtobreick, Linda, Van Eylen, Vincent, Winn, Joshua N., and Zakhozhay, Olga V.
- Subjects
Astrophysics - Earth and Planetary Astrophysics ,Astrophysics - Solar and Stellar Astrophysics - Abstract
HD3167 is a bright (V=8.9 mag) K0V star observed by the NASA's K2 space mission during its Campaign 8. It has been recently found to host two small transiting planets, namely, HD3167b, an ultra short period (0.96 d) super-Earth, and HD3167c, a mini-Neptune on a relatively long-period orbit (29.85 d). Here we present an intensive radial velocity follow-up of HD3167 performed with the FIES@NOT, HARPS@ESO-3.6m, and HARPS-N@TNG spectrographs. We revise the system parameters and determine radii, masses, and densities of the two transiting planets by combining the K2 photometry with our spectroscopic data. With a mass of 5.69+/-0.44 MEarth, radius of 1.574+/-0.054 REarth, and mean density of 8.00(+1.0)(-0.98) g/cm^3, HD3167b joins the small group of ultra-short period planets known to have a rocky terrestrial composition. HD3167c has a mass of 8.33 (+1.79)(-1.85) MEarth and a radius of 2.740(+0.106)(-0.100) REarth, yielding a mean density of 2.21(+0.56)(-0.53) g/cm^3, indicative of a planet with a composition comprising a solid core surrounded by a thick atmospheric envelope. The rather large pressure scale height (about 350 km) and the brightness of the host star make HD3167c an ideal target for atmospheric characterization via transmission spectroscopy across a broad range of wavelengths. We found evidence of additional signals in the radial velocity measurements but the currently available data set does not allow us to draw any firm conclusion on the origin of the observed variation., Comment: 18 pages, 11 figures, 5 tables
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- 2017
- Full Text
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4. The Discovery and Mass Measurement of a New Ultra-short-period Planet: K2-131b
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Dai, Fei, primary, Winn, Joshua N., additional, Gandolfi, Davide, additional, Wang, Sharon X., additional, Teske, Johanna K., additional, Burt, Jennifer, additional, Albrecht, Simon, additional, Barragán, Oscar, additional, Cochran, William D., additional, Endl, Michael, additional, Fridlund, Malcolm, additional, Hatzes, Artie P., additional, Hirano, Teruyuki, additional, Hirsch, Lea A., additional, Johnson, Marshall C., additional, Bo Justesen, Anders, additional, Livingston, John, additional, Persson, Carina M., additional, Prieto-Arranz, Jorge, additional, Vanderburg, Andrew, additional, Alonso, Roi, additional, Antoniciello, Giuliano, additional, Arriagada, Pamela, additional, Butler, R. P., additional, Cabrera, Juan, additional, Crane, Jeffrey D., additional, Cusano, Felice, additional, Csizmadia, Szilárd, additional, Deeg, Hans, additional, Dieterich, Sergio B., additional, Eigmüller, Philipp, additional, Erikson, Anders, additional, Everett, Mark E., additional, Fukui, Akihiko, additional, Grziwa, Sascha, additional, Guenther, Eike W., additional, Henry, Gregory W., additional, Howell, Steve B., additional, Johnson, John Asher, additional, Korth, Judith, additional, Kuzuhara, Masayuki, additional, Narita, Norio, additional, Nespral, David, additional, Nowak, Grzegorz, additional, Palle, Enric, additional, Pätzold, Martin, additional, Rauer, Heike, additional, Rodríguez, Pilar Montañés, additional, Shectman, Stephen A., additional, Smith, Alexis M. S., additional, Thompson, Ian B., additional, Eylen, Vincent Van, additional, Williamson, Michael W., additional, and Wittenmyer, Robert A., additional
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- 2017
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5. The Transiting Multi-planet System HD 3167: A 5.7M⊕Super-Earth and an 8.3M⊕Mini-Neptune
- Author
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Gandolfi, Davide, primary, Barragán, Oscar, additional, Hatzes, Artie P., additional, Fridlund, Malcolm, additional, Fossati, Luca, additional, Donati, Paolo, additional, Johnson, Marshall C., additional, Nowak, Grzegorz, additional, Prieto-Arranz, Jorge, additional, Albrecht, Simon, additional, Dai, Fei, additional, Deeg, Hans, additional, Endl, Michael, additional, Grziwa, Sascha, additional, Hjorth, Maria, additional, Korth, Judith, additional, Nespral, David, additional, Saario, Joonas, additional, Smith, Alexis M. S., additional, Antoniciello, Giuliano, additional, Alarcon, Javier, additional, Bedell, Megan, additional, Blay, Pere, additional, Brems, Stefan S., additional, Cabrera, Juan, additional, Csizmadia, Szilard, additional, Cusano, Felice, additional, Cochran, William D., additional, Eigmüller, Philipp, additional, Erikson, Anders, additional, González Hernández, Jonay I., additional, Guenther, Eike W., additional, Hirano, Teruyuki, additional, Suárez Mascareño, Alejandro, additional, Narita, Norio, additional, Palle, Enric, additional, Parviainen, Hannu, additional, Pätzold, Martin, additional, Persson, Carina M., additional, Rauer, Heike, additional, Saviane, Ivo, additional, Schmidtobreick, Linda, additional, Van Eylen, Vincent, additional, Winn, Joshua N., additional, and Zakhozhay, Olga V., additional
- Published
- 2017
- Full Text
- View/download PDF
6. The Transiting Multi-planet System HD3167: A 5.7M(circle plus) Super-Earth and an 8.3M(circle plus) Mini-Neptune
- Author
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Gandolfi, Davide, Barragan, Oscar, Hatzes, Artie P., Fridlund, Malcolm, Fossati, Luca, Donati, Paolo, Johnson, Marshall C., Nowak, Grzegorz, Prieto-Arranz, Jorge, Albrecht, Simon, Dai, Fei, Deeg, Hans, Endl, Michael, Grziwa, Sascha, Hjorth, Maria, Korth, Judith, Nespral, David, Saario, Joonas, Smith, Alexis M. S., Antoniciello, Giuliano, Alarcon, Javier, Bedell, Megan, Blay, Pere, Brems, Stefan S., Cabrera, Juan, Csizmadia, Szilard, Cusano, Felice, Cochran, William D., Eigmller, Philipp, Erikson, Anders, Gonzalez Hernandez, Jonay I., Guenther, Eike W., Hirano, Teruyuki, Suarez Mascareno, Alejandro, Narita, Norio, Palle, Enric, Parviainen, Hannu, Paetzold, Martin, Persson, Carina M., Rauer, Heike, Saviane, Ivo, Schmidtobreick, Linda, Van Eylen, Vincent, Winn, Joshua N., Zakhozhay, Olga V., Gandolfi, Davide, Barragan, Oscar, Hatzes, Artie P., Fridlund, Malcolm, Fossati, Luca, Donati, Paolo, Johnson, Marshall C., Nowak, Grzegorz, Prieto-Arranz, Jorge, Albrecht, Simon, Dai, Fei, Deeg, Hans, Endl, Michael, Grziwa, Sascha, Hjorth, Maria, Korth, Judith, Nespral, David, Saario, Joonas, Smith, Alexis M. S., Antoniciello, Giuliano, Alarcon, Javier, Bedell, Megan, Blay, Pere, Brems, Stefan S., Cabrera, Juan, Csizmadia, Szilard, Cusano, Felice, Cochran, William D., Eigmller, Philipp, Erikson, Anders, Gonzalez Hernandez, Jonay I., Guenther, Eike W., Hirano, Teruyuki, Suarez Mascareno, Alejandro, Narita, Norio, Palle, Enric, Parviainen, Hannu, Paetzold, Martin, Persson, Carina M., Rauer, Heike, Saviane, Ivo, Schmidtobreick, Linda, Van Eylen, Vincent, Winn, Joshua N., and Zakhozhay, Olga V.
- Abstract
HD3167 is a bright (V = 8.9 mag) K0V star observed by the NASA's K2 space mission during its Campaign 8. It has been recently found to host two small transiting planets, namely, HD 3167b, an ultra short period (0.96 days) super-Earth, and HD 3167c, a mini-Neptune on a relatively long-period orbit (29.85 d). Here we present an intensive radial velocity follow-up of HD 3167 performed with the FIES@NOT, HARPS@ESO-3.6m, and HARPS-N@TNG spectrographs. We revise the system parameters and determine radii, masses, and densities of the two transiting planets by combining the K2 photometry with our spectroscopic data. With a mass of 5.69 +/- -0.44 M-circle plus, radius of 1.574 +/- -0.054 R-circle plus, and mean density of 8.00(-0.98)(+1.0) g/cm(-3), HD 3167b joins the small group of ultra-short period planets known to have a rocky terrestrial composition. HD 3167c has a mass of 8.33(-1.85)(+1.79) M-circle plus and a radius of 2.740(-0.100)(+0.106) R-circle plus, yielding a mean density of 2.21(-0.53)(+0.56) g/cm(-3), indicative of a planet with a composition comprising a solid core surrounded by a thick atmospheric envelope. The rather large pressure scale height (similar to 350 km) and the brightness of the host star make HD 3167c an ideal target for atmospheric characterization via transmission spectroscopy across a broad range of wavelengths. We found evidence of additional signals in the radial velocity measurements but the currently available data set does not allow us to draw any firm conclusion on the origin of the observed variation.
- Published
- 2017
7. The Discovery and Mass Measurement of a New Ultra-short-period Planet: EPIC 228732031b
- Author
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Dai, Fei, Winn, Joshua N., Gandolfi, Davide, Wang, Sharon X., Teske, Johanna K., Burt, Jennifer, Albrecht, Simon, Barragan, Oscar, Cochran, William D., Endl, Michael, Fridlund, Malcolm, Hatzes, Artie P., Hirano, Teruyuki, Hirsch, Lea A., Johnson, Marshall C., Justesen, Anders Bo, Livingston, John, Persson, Carina M., Prieto-Arranz, Jorge, Vanderburg, Andrew, Alonso, Roi, Antoniciello, Giuliano, Arriagada, Pamela, Butler, R. P., Cabrera, Juan, Crane, Jeffrey D., Cusano, Felice, Csizmadia, Szilard, Deeg, Hans, Dieterich, Sergio B., Eigmueller, Philipp, Erikson, Anders, Everett, Mark E., Fukui, Akihiko, Grziwa, Sascha, Guenther, Eike W., Henry, Gregory W., Howell, Steve B., Johnson, John Asher, Korth, Judith, Kuzuhara, Masayuki, Narita, Norio, Nespral, David, Nowak, Grzegorz, Palle, Enric, Paetzold, Martin, Rauer, Heike, Montanes Rodriguez, Pilar, Shectman, Stephen A., Smith, Alexis M. S., Thompson, Ian B., Van Eylen, Vincent, Williamson, Michael W., Wittenmyer, Robert A., Dai, Fei, Winn, Joshua N., Gandolfi, Davide, Wang, Sharon X., Teske, Johanna K., Burt, Jennifer, Albrecht, Simon, Barragan, Oscar, Cochran, William D., Endl, Michael, Fridlund, Malcolm, Hatzes, Artie P., Hirano, Teruyuki, Hirsch, Lea A., Johnson, Marshall C., Justesen, Anders Bo, Livingston, John, Persson, Carina M., Prieto-Arranz, Jorge, Vanderburg, Andrew, Alonso, Roi, Antoniciello, Giuliano, Arriagada, Pamela, Butler, R. P., Cabrera, Juan, Crane, Jeffrey D., Cusano, Felice, Csizmadia, Szilard, Deeg, Hans, Dieterich, Sergio B., Eigmueller, Philipp, Erikson, Anders, Everett, Mark E., Fukui, Akihiko, Grziwa, Sascha, Guenther, Eike W., Henry, Gregory W., Howell, Steve B., Johnson, John Asher, Korth, Judith, Kuzuhara, Masayuki, Narita, Norio, Nespral, David, Nowak, Grzegorz, Palle, Enric, Paetzold, Martin, Rauer, Heike, Montanes Rodriguez, Pilar, Shectman, Stephen A., Smith, Alexis M. S., Thompson, Ian B., Van Eylen, Vincent, Williamson, Michael W., and Wittenmyer, Robert A.
- Abstract
We report the discovery of a new ultra-short-period planet and summarize the properties of all such planets for which the mass and radius have been measured. The new planet, EPIC. 228732031b, was discovered in K2 Campaign 10. It has a radius of 1.81(-0.12)(+0.16) R-circle plus and orbits a G dwarf with a period of 8.9 hr. Radial velocities obtained with Magellan/PFS and TNG/HARPS-N show evidence for stellar activity along with orbital motion. We determined the planetary mass using two different methods: (1) the floating chunk offset method, based only on changes in velocity observed on the same night; and (2) a Gaussian process regression based on both the radial velocity and photometric time series. The results are consistent and lead to a mass measurement of 6.5. +/- 1.6 M-circle plus and a mean density of 6.0(-2.7)(+3.0) g cm(-3).
- Published
- 2017
8. The Transiting Multi-Planet System HD 3167: A 5.7 M ⊕ Super-Earth and an 8.3 M ⊕ Mini-Neptune
- Author
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Massachusetts Institute of Technology. Department of Physics, MIT Kavli Institute for Astrophysics and Space Research, Dai, Fei, Gandolfi, Davide, Barragán, Oscar, Hatzes, Artie P., Fridlund, Malcolm, Fossati, Luca, Donati, Paolo, Johnson, Marshall C., Nowak, Grzegorz, Prieto-Arranz, Jorge, Albrecht, Simon, Deeg, Hans, Endl, Michael, Grziwa, Sascha, Hjorth, Maria, Korth, Judith, Nespral, David, Saario, Joonas, Smith, Alexis M. S., Antoniciello, Giuliano, Alarcon, Javier, Bedell, Megan, Blay, Pere, Brems, Stefan S., Cabrera, Juan, Csizmadia, Szilard, Cusano, Felice, Cochran, William D., Eigmüller, Philipp, Erikson, Anders, González Hernández, Jonay I., Guenther, Eike W., Hirano, Teruyuki, Suárez Mascareño, Alejandro, Narita, Norio, Palle, Enric, Parviainen, Hannu, Pätzold, Martin, Persson, Carina M., Rauer, Heike, Saviane, Ivo, Schmidtobreick, Linda, Van Eylen, Vincent, Winn, Joshua N., Zakhozhay, Olga V., Massachusetts Institute of Technology. Department of Physics, MIT Kavli Institute for Astrophysics and Space Research, Dai, Fei, Gandolfi, Davide, Barragán, Oscar, Hatzes, Artie P., Fridlund, Malcolm, Fossati, Luca, Donati, Paolo, Johnson, Marshall C., Nowak, Grzegorz, Prieto-Arranz, Jorge, Albrecht, Simon, Deeg, Hans, Endl, Michael, Grziwa, Sascha, Hjorth, Maria, Korth, Judith, Nespral, David, Saario, Joonas, Smith, Alexis M. S., Antoniciello, Giuliano, Alarcon, Javier, Bedell, Megan, Blay, Pere, Brems, Stefan S., Cabrera, Juan, Csizmadia, Szilard, Cusano, Felice, Cochran, William D., Eigmüller, Philipp, Erikson, Anders, González Hernández, Jonay I., Guenther, Eike W., Hirano, Teruyuki, Suárez Mascareño, Alejandro, Narita, Norio, Palle, Enric, Parviainen, Hannu, Pätzold, Martin, Persson, Carina M., Rauer, Heike, Saviane, Ivo, Schmidtobreick, Linda, Van Eylen, Vincent, Winn, Joshua N., and Zakhozhay, Olga V.
- Published
- 2017
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