Results 21 to 30 of about 1,819 (116)

Free-floating Planet Mass Function from MOA-II 9 yr Survey toward the Galactic Bulge

The Astronomical Journal, 2023
We present the first measurement of the mass function of free-floating planets (FFPs), or very wide orbit planets down to an Earth mass, from the MOA-II microlensing survey in 2006–2014.
Takahiro Sumi, Naoki Koshimoto, David P. Bennett, Nicholas J. Rattenbury, Fumio Abe, Richard Barry, Aparna Bhattacharya, Ian A. Bond, Hirosane Fujii, Akihiko Fukui, Ryusei Hamada, Yuki Hirao, Stela Ishitani Silva, Yoshitaka Itow, Rintaro Kirikawa, Iona Kondo, Yutaka Matsubara, Shota Miyazaki, Yasushi Muraki, Greg Olmschenk, Clément Ranc, Yuki Satoh, Daisuke Suzuki, Mio Tomoyoshi, Paul . J. Tristram, Aikaterini Vandorou, Hibiki Yama, Kansuke Yamashita, MOA Collaboration   +28 more
doaj   +1 more source

Exoplanets - search methods, discoveries, and prospects for astrobiology [PDF]

, 2008
Whereas the Solar System has Mars and Europa as the best candidates for finding fossil/extant life as we know it - based on complex carbon compounds and liquid water - the 263 (non-pulsar) planetary systems around other stars as known at 15 September ...
Jones, Barrie W
core   +2 more sources

Using graphical and pictorial representations to teach introductory astronomy students about the detection of extrasolar planets via gravitational microlensing [PDF]

, 2016
The detection and study of extrasolar planets is an exciting and thriving field in modern astrophysics, and an increasingly popular topic in introductory astronomy courses.
Bransford J. D., Colin S. Wallace, Committe on Undergraduate Physics Education Research and Implementation, Edward E. Prather, Einstein A., Gina Brissenden, Hartle J. B., Linder C., McDermott L. C., Prather E. E., Singer S. R., Timothy G. Chambers   +11 more
core   +3 more sources

Ogle-2018-blg-0677lb: A super earth near the galactic bulge [PDF]

, 2020
We report the analysis of the microlensing event OGLE-2018-BLG-0677. A small feature in the light curve of the event leads to the discovery that the lens is a star-planet system. Although there are two degenerate solutions that could not be distinguished
Albrow, M. D., Cha, S. -M., Chung, S. -J., Gould, A., Han, C., Herrera-Martín, Antonio, Hwang, K. -H., Iwanek, P., Jung, Y. K., Kim, D. -J., Kim, H. -W., Kim, S. -L., Kozłowski, S., Lee, C. -U., Lee, D. -J., Lee, Y., Mróz, P., Park, B. -G., Pietrukowicz, P., Pogge, R. W., Poleski, R., Rybicki, K., Ryu, Y. -H., Shin, I. -G., Shvartzvald, Y., Skowron, J., Soszyński, I., Szymański, M. K., Udalski, A., Ulaczyk, K., Wrona, M., Yee, J. C., Zang, W.   +32 more
core   +2 more sources

Confirmation of Color-dependent Centroid Shift Measured After 1.8 Years with HST

The Astronomical Journal, 2023
We measured the precise masses of the host and planet in the OGLE-2003-BLG-235 system, when the lens and source were resolving, with 2018 Keck high resolution images.
Aparna Bhattacharya, David P. Bennett, Jean Philippe Beaulieu, Ian A. Bond, Naoki Koshimoto, Jessica R. Lu, Joshua W. Blackman, Clément Ranc, Aikaterini Vandorou, Sean K. Terry, Jean Baptiste Marquette, Andrew A. Cole, Akihiko Fukui   +12 more
doaj   +1 more source

Planetary mass function and planetary systems [PDF]

, 2010
With planets orbiting stars, a planetary mass function should not be seen as a low-mass extension of the stellar mass function, but a proper formalism needs to take care of the fact that the statistical properties of planet populations are linked to the ...
Agresti, Albrow, Albrow, Barnes, Beaulieu, Bennett, Catala, Cohen, Collier Cameron, Dominik, Dominik, Dominik, Dominik, Dominik, Dominik, Dong, Gaudi, Gaudi, Gould, Gould, Griest, Ida, Kroupa, Kubas, Lo Curto, M. Dominik, Maciejewski, Marcy, Marcy, Marois, Mayor, O'Toole, O'Toole, Pollacco, Salpeter, Scalo, Snodgrass, Sumi, Tsapras, Tsapras, Udalski, Udry, Wright   +42 more
core   +1 more source

Possibility of Detection of Exomoons with Inclined Orbits Orbiting Pulsar Planets Using the Time‐of‐Arrival Analysis

Advances in Astronomy, Volume 2014, Issue 1, 2014., 2014
The perturbation caused by planet‐moon binarity on the time‐of‐arrival (TOA) signal of a pulsar with an orbiting planet is derived for the case of the orbit of the planet‐moon system inclined of an angle α with respect to the plane of the orbit of the planet‐moon barycenter around the pulsar.
Antonio Pasqua, Khudhair A. Assaf, Gary Wegner   +2 more
wiley   +1 more source

Robotic Astronomy with the Faulkes Telescopes and Las Cumbres Observatory Global Telescope

Advances in Astronomy, Volume 2010, Issue 1, 2010., 2010
We present results from ongoing science projects conducted by members of the Faulkes Telescope (FT) team and Las Cumbres Observatory Global Telescope (LCOGT). Many of these projects incorporate observations carried out and analysed by FT users, comprising amateur astronomers and schools.
Fraser Lewis, Rachel Street, Paul Roche, Vanessa Stroud, David M. Russell, Alberto J. Castro-Tirado   +5 more
wiley   +1 more source

ExELS: an exoplanet legacy science proposal for the ESA Euclid mission. II. Hot exoplanets and sub-stellar systems [PDF]

, 2006
The Exoplanet Euclid Legacy Survey (ExELS) proposes to determine the frequency of cold exoplanets down to Earth mass from host separations of ~1 AU out to the free-floating regime by detecting microlensing events in Galactic Bulge. We show that ExELS can
McDonald, I., Kerins, E., Penny, M., Beaulieu, J. -P., Batista, V., Novati, S. Calchi, Cassan, A., Fouque, P., Mao, S., Marquette, J. B., Rattenbury, N., Robin, A. C., Tisserand, P., Osorio, M. R. Zapatero   +13 more
core   +6 more sources

KMT-2022-BLG-2397: Brown Dwarf at the Upper Shore of the Einstein Desert

The Astronomical Journal, 2023
We measure the Einstein radius of the single-lens microlensing event KMT-2022-BLG-2397 to be θ _E = 24.8 ± 3.6 μ as, placing it at the upper shore of the Einstein Desert, 9 ≲ θ _E / μ as ≲ 25, between free-floating planets (FFPs) and bulge brown dwarfs ...
Andrew Gould, Yoon-Hyun Ryu, Jennifer C. Yee, Michael D. Albrow, Sun-Ju Chung, Cheongho Han, Kyu-Ha Hwang, Youn Kil Jung, In-Gu Shin, Yossi Shvartzvald, Hongjing Yang, Weicheng Zang, Sang-Mok Cha, Dong-Jin Kim, Seung-Lee Kim, Chung-Uk Lee, Dong-Joo Lee, Yongseok Lee, Byeong-Gon Park, Richard W. Pogge, The KMTNet Collaboration   +20 more
doaj   +1 more source