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VLA ammonia observations of L1287. Analysis of the Guitar core and two filaments
Palau, Aina; Rodríguez, Luis F.; Busquet, Gemma +6 more
Aims: In this paper, we study the dense gas of the molecular cloud LDN 1287 (L1287), which harbors a double FU Ori system, an energetic molecular outflow, and a still-forming cluster of deeply embedded low-mass young stellar objects that show a high level of fragmentation.
Methods: We present optical Hα and [SII], and VLA NH3 …
Reply to: On the signature of a 70-solar-mass black hole in LB-1
Soria, Roberto; Liu, Jifeng; Lu, Youjun +4 more
Radial velocity constraints on the long-period transiting planet Kepler-1625 b with CARMENES
Heller, René; Reiners, Ansgar; Zechmeister, Mathias +1 more
Context. The star Kepler-1625 recently attracted considerable attention when an analysis of the stellar photometric time series from the Kepler mission was interpreted as showing evidence of a large exomoon around the transiting Jupiter-sized planet candidate Kepler-1625 b. However, the mass of Kepler-1625 b has not been determined independently a…
The {}(\mathbf{7}) Be Abundance in Nova V5668 Sgr Is Consistent with the Theory
Chugai, N. N.; Kudryashov, A. D.
By now the resonance lines of the isotope ${}7$Be have been detected in five novae. The known estimates of the relative abundance of this isotope from the equivalent widths of ${}7$Be II and Ca II lines lead to the conclusion that the ${}7$Be abundance is considerably higher than the predictions of thermonuclear bu…
NGC 4104: A shell galaxy in a forming fossil group
Adami, C.; Martinet, N.; Cuillandre, J. -C. +4 more
Context. Groups are the most common association of galaxies in the Universe and they are found in different configuration states, such as loose, compact, and fossil groups.
Aims: We studied the galaxy group MKW 4s, dominated by the giant early-type galaxy NGC 4104 at z = 0.0282, with the aim of understanding the evolutionary stage of this gro…
Comparison of terrestrial and Martian TEC at dawn and dusk during solstices
Witasse, Olivier; Sánchez-Cano, Beatriz; Burrell, Angeline G. +2 more
This paper used the similarities between the ionospheres on Mars and Earth, the most similar of the terrestrial planets, to examine the relative importance of photochemical and transport processes at dawn and dusk. The amount of plasma present in the ionosphere, as measured by the total electron content (TEC), was examined at different locations f…
Schumann resonance on Titan: A critical Re-assessment
Lorenz, Ralph D.; Le Gall, Alice
Extremely Low Frequency (ELF) electric field signals recorded by the Huygens probe have previously been interpreted as indicating a Schumann Resonance (SR) in the ionosphere-ocean cavity. This interpretation required accommodation of a number of anomalous features with respect to the terrestrial SR, namely a lack of observed lightning discharges w…
A Strong-lensing Model for the WMDF JWST/GTO Very Rich Cluster A1489
Finkelstein, Steven L.; Koekemoer, Anton M.; Larson, Rebecca L. +19 more
We present a first strong-lensing model for the galaxy cluster RM J121218.5+273255.1 (z = 0.35; hereafter RMJ1212; also known as A1489). This cluster is among the top 0.1% richest clusters in the redMaPPer catalog; it is significantly detected in X-ray and through the Sunyaev-Zel'dovich effect in ROSAT and Planck data, respectively, and its optica…
NGC 6712: the variable star population of a tidally disrupted globular cluster
Arellano Ferro, A.; Calderón, J. H.; Lázaro, C. +4 more
We present an analysis of {VI} CCD time-series photometry of globular cluster NGC 6712. Our main goal is to study the variable star population as indicators of the cluster mean physical parameters. We employed the Fourier decomposition of RR Lyrae light curves to confirm that {}[Fe/H]_{UVES} = -1.0 ± 0.05 is a solid estimate. We estimated the redd…
Non-interacting coronal mass ejections and solar energetic particles near the quadrature configuration of Solar TErrestrial RElations Observatory
Ravishankar, Anitha; Michałek, Grzegorz
We present our results on the correlation of non-interacting coronal mass ejections (CMEs) and solar energetic particles (SEPs). A statistical analysis was conducted on 25 SEP events and the associated CME and flare during the ascending phase of solar cycle 24, i.e., 2009-2013, which marks the quadrature configuration of Solar TErrestrial RElation…