Zobrazeno 1 - 10
of 41
pro vyhledávání: '"Sarah E. Dodson-Robinson"'
If Doppler searches for earth-mass, habitable planets are to succeed, observers must be able to identify and model out stellar activity signals. Here we demonstrate how to diagnose activity signals by calculating the magnitude-squared coherence $\hat
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::b4b30e365ca8189b556da3565e282146
http://arxiv.org/abs/2201.13342
http://arxiv.org/abs/2201.13342
Autor:
Hallie Fausey, Victor Ramirez Delgado, Anna Bortle, John E. Gizis, Jinbiao Ji, Sarah E. Dodson-Robinson
Radial-velocity (RV) planet searches are often polluted by signals caused by gas motion at the star's surface. Stellar activity can mimic or mask changes in the RVs caused by orbiting planets, resulting in false positives or missed detections. Here w
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::8ed462d06f28e6cf010f9c27c4ff39bf
http://arxiv.org/abs/2103.02709
http://arxiv.org/abs/2103.02709
Publikováno v:
Research Notes of the AAS. 4:153
γ Draconis, a K5III star, showed radial velocity (RV) variations consistent with a 10.7 Jupiter mass planet from 2003 to 2011. After 2011, the periodic signal decayed, then reappeared with a phase shift. Hatzes et al. suggested that γ Dra’s RV va
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::c6286fff8b8afbe609630f0aee75281b
https://doi.org/10.3847/2515-5172/abb6ee
https://doi.org/10.3847/2515-5172/abb6ee
Based on the interstellar CO/H2 ratio, carbon monoxide-based censuses of protoplanetary disks in Lupus, sigma Orionis, and Chamaeleon I found no disks more massive than the minimum-mass solar nebula, which is inconsistent with the existence of exopla
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::613a0ea3bb5cc769f0c6402458164827
http://arxiv.org/abs/1811.05934
http://arxiv.org/abs/1811.05934
Starspots, plages, and activity cycles cause radial velocity variations that can either mimic planets or hide their existence. To verify the authenticity of newly discovered planets, observers may search for periodicity in spectroscopic activity indi
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::587e3bf7e770f00475eaffe141cbfcd6
http://arxiv.org/abs/1808.09009
http://arxiv.org/abs/1808.09009
A pileup near 1~AU in the semimajor axis distribution of giant exoplanets has been visually identified using log-spaced distribution plots. Here we propose that looking for features in a log-spaced semimajor axis distribution of giant planets is prob
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::b938a667d3068981ea563d9418eac879
http://arxiv.org/abs/1802.06044
http://arxiv.org/abs/1802.06044
Publikováno v:
The Astronomical Journal. 158:210
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::afa7466bcfc37c47c2e754097c7f8e21
https://doi.org/10.3847/1538-3881/ab441c
https://doi.org/10.3847/1538-3881/ab441c
Publikováno v:
The Astrophysical Journal. 874:26
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::038d17245ca5606ffcc2951cdfc3a224
https://doi.org/10.3847/1538-4357/aafc36
https://doi.org/10.3847/1538-4357/aafc36
Observations from the Herschel Space Observatory have more than doubled the number of wide debris disks orbiting Sunlike stars to include over 30 systems with R > 100 AU. Here we present new Herschel PACS and re-analyzed Spitzer MIPS photometry of fi
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::f3a00d7b881282a428a2c0874947002f
Publikováno v:
The Astrophysical Journal. 855:145
The semimajor axis distribution of giant exoplanets appears to have a pileup near 1 AU. Photoevaporation opens a gap in the inner few AU of gaseous disks before dissipating them. Here we investigate whether photoevaporation can significantly affect t
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::df419c58d9b0e9641ac79fbb7c847091
https://doi.org/10.3847/1538-4357/aaaae5
https://doi.org/10.3847/1538-4357/aaaae5