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Water observed in the atmosphere of τ Boötis Ab with CARMENES/CAHA
Zhang, Yapeng; Gandhi, Siddharth; Brogi, Matteo +4 more
Characterizing the atmospheres of hot Jupiters is important in understanding the formation and migration of these exotic planets. However, there are still many open questions about the chemical and physical properties of these atmospheres. Here, we confirm the detection of water vapour in thermal emission from the non-transiting hot Jupiter τ Boöt…
Carbon Dioxide Ice Glaciers at the South Pole of Mars
Smith, I. B.; Putzig, N. E.; Schlegel, N. -J. +4 more
Massive, kilometer thick deposits of carbon dioxide (CO2) ice have been detected at the south polar cap of Mars by radar investigations. These deposits are divided into several units that are separated by thin water ice bounding layers. Recent studies investigated the accumulation history of CO2 ice and found that the deposit…
TESS Observations of Kepler Systems with Transit Timing Variations
Dalba, Paul A.; Livingston, John H.; Jontof-Hutter, Daniel
We identify targets in the Kepler field that may be characterized by transit timing variations and are detectable by the Transiting Exoplanet Survey Satellite (TESS). Despite the reduced signal-to-noise ratio of TESS transits compared to Kepler, we recover 48 transits from 13 systems in Sectors 14, 15, 26, 40 and 41. We find strong evidence of a n…
A deep 1.4 GHz survey of the J1030 equatorial field: A new window on radio source populations across cosmic time
Prandoni, I.; Massardi, M.; Vignali, C. +12 more
We present deep L-Band observations of the equatorial field centered on the z = 6.3 Sloan Digital Sky Survey (SDSS) quasar (QSO). This field is rich of multiwavelength photometry and spectroscopy data, making it an ideal laboratory for galaxy evolution studies. Our observations reach a 1σ sensitivity of ~2.5 µJy at the center of the field. We extr…
Ultracool dwarfs identified using spectra in LAMOST DR7
Luo, A. -Li; Li, Yin-Bi; Zhang, Shuo +7 more
In this work, we identify 734 ultracool dwarfs with a spectral type of M6 or later, including one L0. Of this sample, 625 were studied spectroscopically for the first time. All of these ultracool dwarfs are within 360 pc, with a Gaia G magnitude brighter than ∼19.2 mag. By studying the spectra and checking their stellar parameters (Teff…
Multiwavelength observations of Swift J0243.6+6124 from 2017 to 2022
Liu, Wei; Wang, Xiaofeng; Sai, Hanna +8 more
Context.Swift J0243.6+6124 is a high-mass X-ray binary that went into a giant X-ray outburst in 2017. During this event, the X-ray luminosity reached the highest value ever measured in a galactic Be/X-ray binary.
Aims: Our aim is to study the long-term variability of Swift J0243.6+6124 after the 2017 major X-ray outburst.
Methods: We hav…
The ionised and molecular mass of post-common-envelope planetary nebulae. The missing mass problem
Alcolea, J.; Santander-García, M.; Bujarrabal, V. +2 more
Context. Most planetary nebulae (PNe) show beautiful, axisymmetric morphologies despite their progenitor stars being essentially spherical. Close binarity is widely invoked to help eject an axisymmetric nebula, after a brief phase of engulfment of the secondary within the envelope of the asymptotic giant branch (AGB) star, known as the common enve…
Searching for the connection between ionizing-photon escape and the surface density of star formation at z 3
Steidel, Charles C.; Reddy, Naveen A.; Shapley, Alice +2 more
The connection between the escape fraction of ionizing photons (fesc) and star formation rate surface density (ΣSFR) is a key input for reionization models, but remains untested at high redshift. We analyse 35 z ~ 3 galaxies from the Keck Lyman Continuum Survey (KLCS) covered by deep, rest far-UV spectra of the Lyman continuu…
The Relative Orientation between Local Magnetic Field and Galactic Plane in Low Latitude Dark Clouds
Wolf, S.; Pandey, J. C.; Choudhury, Gulafsha B. +4 more
In this work, we study the magnetic field morphology of selected star-forming clouds spread over the galactic latitude (b) range -10° to 10°. The polarimetric observations of clouds CB24, CB27 and CB188 are conducted to study the magnetic field geometry of those clouds using the 104 cm Sampurnanand Telescope (ST) located at ARIES, Manora Peak, Nai…
Cloud-scale radio surveys of star formation and feedback in Triangulum Galaxy M 33: VLA observations
Menten, K. M.; Braine, J.; Beck, R. +11 more
Studying the interplay between massive star formation and the interstellar medium (ISM) is paramount to understand the evolution of galaxies. Radio continuum (RC) emission serves as an extinction-free tracer of both massive star formation and the energetic components of the ISM. We present a multiband RC survey of the Local Group galaxy M 33 down …