268 citations · 631 across the 16 of their papers we have counts for
17 papers
ALMA2040: Submillimeter-wave Limb Sounding of Venus and Mars
Hideo Sagawa, Arianna Piccialli, Miriam Rengel +5
Venus and Mars are unique laboratories for understanding the evolution and diversity of terrestrial planets. Despite their broadly similar rocky compositions, their atmospheres, cl…
GREX-PLUS Science Book
PLUS Science Team, Akio K. Inoue, Yuichi Harikane +28
GREX-PLUS (Galaxy Reionization EXplorer and PLanetary Universe Spectrometer) is a mission candidate for a JAXA's strategic L-class mission to be launched in the 2030s. Its primary…
Revealing the dynamics of magnetosphere, atmosphere, and interior of solar system objects with the Square Kilometre Array
Tomoki Kimura, Yuka Fujii, Hajime Kita +3
Bodies such as planets, moons, and asteroids in our solar system are the brightest objects in the low-frequency radio astronomy at 10 GHz. The low-frequency radio emissi…
Ground-based HCN submillimetre measurements in Titan's atmosphere: an intercomparison with Herschel observations
M. Rengel, D. Shulyak, P. Hartogh +4
The aim of this study is to measure the vertical distribution of HCN on Titan's stratosphere using ground-based submm observations acquired quasi-simultaneously with the Herschel o…
C isotopic ratios of HCN on Titan measured with ALMA
Takahiro Iino, Kotomi Taniguchi, Hideo Sagawa +1
We present the first determination of the abundance ratios of C substitutions of cyanoacetylene (HCN), [HCCCN]:[HCCCN]:[HCCCN] in Titan's atmosphe…
A stringent upper limit of the PH abundance at the cloud top of Venus
T. Encrenaz, T. K. Greathouse, E. Marcq +7
Following the announcement of the detection of phosphine (PH) in the cloud deck of Venus at millimeter wavelengths, we have searched for other possible signatures of this molec…
A belt-like distribution of gaseous hydrogen cyanide on Neptune's equatorial stratosphere detected by ALMA
Takahiro Iino, Hideo Sagawa, Takashi Tsukagoshi +1
We present a spatially resolved map of integrated-intensity and abundance of Neptune's stratospheric hydrogen cyanide (HCN). The analyzed data were obtained from the archived 2016…
Phosphine Gas in the Cloud Decks of Venus
Jane S. Greaves, Anita M. S. Richards, William Bains +16
Measurements of trace-gases in planetary atmospheres help us explore chemical conditions different to those on Earth. Our nearest neighbor, Venus, has cloud decks that are temperat…
N/N isotopic ratio in CHCN of Titan's atmosphere measured with ALMA
Takahiro Iino, Hideo Sagawa, Takashi Tsukagoshi
Each of the nitriles present in the atmosphere of Titan can be expected to exhibit different \ce{^{14}N/^{15}N} values depending on their production processes, primarily because of…
Stationary waves and slowly moving features in the night upper clouds of Venus
J. Peralta, R. Hueso, A. Sánchez-Lavega +9
At the cloud top level of Venus (65-70 km altitude) the atmosphere rotates 60 times faster than the underlying surface, a phenomenon known as superrotation. Whereas on Venus's days…
Herschel/PACS spectroscopy of trace gases of the stratosphere of Titan
Miriam Rengel, Hideo Sagawa, Paul Hartogh +7
Aims: We investigate the composition of Titan's stratosphere from new medium-resolution far-infrared observations performed with the full range of Herschel's Photodetector Array Ca…
Wind mapping in Venus' upper mesosphere with the IRAM-Plateau de Bure interferometer
A. Moullet, E. Lellouch, R. Moreno +2
The dynamics of the upper mesosphere of Venus (~85-115 km) have been characterized as a combination of a retrograde superrotating zonal wind (RSZ) with a subsolar-to-antisolar flow…
Herschel/HIFI observations of Mars: first detection of O_2 at submillimetre wavelengths and upper limits on HCl and H_2O_2
P. Hartogh, C. Jarchow, E. Lellouch +47
We report on an initial analysis of Herschel/HIFI observations of hydrogen chloride (HCl), hydrogen peroxide (H_2O_2), and molecular oxygen (O_2) in the Martian atmosphere performe…
Preparation for the Solar system observations with Herschel: Simulation of Jupiter observations with PACS
H. Sagawa, P. Hartogh, M. Rengel +2
Observations of the water inventory as well as other chemically important species on Jupiter will be performed in the frame of the guaranteed time key project of the Herschel Space…
First results of Herschel/PACS observations of Neptune
E. Lellouch, P. Hartogh, H. Feuchtgruber +51
We report on the initial analysis of a Herschel/PACS full range spectrum of Neptune, covering the 51-220 micrometer range with a mean resolving power of ~ 3000, and complemented by…
The Herschel-SPIRE submillimetre spectrum of Mars
B. M. Swinyard, P. Hartogh, S. Sidher +44
We have obtained the first continuous disk averaged spectrum of Mars from 450 to 1550 Ghz using the Herschel-SPIRE Fourier Transform Spectrometer. The spectrum was obtained at a co…
New sub-millimeter heterodyne observations of CO and HCN in Titan's atmosphere with the APEX Swedish Heterodyne Facility Instrument
M. Rengel, H. Sagawa, P. Hartogh
The origin of the atmosphere of the largest moon of Saturn, Titan, is poorly understood and its chemistry is rather complicated. Ground-based millimeter/sub-millimeter heterodyne s…