Search Publications
TOI-150b and TOI-163b: two transiting hot Jupiters, one eccentric and one inflated, revealed by TESS near and at the edge of the JWST CVZ
Henning, Thomas; Kürster, Martin; Jordán, Andrés +51 more
We present the discovery of TYC9191-519-1b (TOI-150b, TIC 271893367) and HD271181b (TOI-163b, TIC 179317684), two hot Jupiters initially detected using 30-min cadence Transiting Exoplanet Survey Satellite (TESS) photometry from Sector 1 and thoroughly characterized through follow-up photometry (CHAT, Hazelwood, LCO/CTIO, El Sauce, TRAPPIST-S), hig…
Mass loss via solar wind and coronal mass ejections during solar cycles 23 and 24
Wang, Yuming; Liu, Rui; Srivastava, Nandita +3 more
Similar to the Sun, other stars shed mass and magnetic flux via ubiquitous quasi-steady wind and episodic stellar coronal mass ejections (CMEs). We investigate the mass loss rate via solar wind and CMEs as a function of solar magnetic variability represented in terms of sunspot number and solar X-ray background luminosity. We estimate the contribu…
Properties of central stars of planetary nebulae with distances in Gaia DR2
Dafonte, C.; González-Santamaría, I.; Manteiga, M. +2 more
Context. We have compiled a catalogue of central stars of planetary nebulae (CSPN) with reliable distances and positions obtained from Gaia Data Release 2 (DR2) astrometry. Distances derived from parallaxes allow us to analyse the galactic distribution and estimate other parameters such as sizes, kinematical ages, bolometric magnitudes, and lumino…
Early science with the Large Millimetre Telescope: An LMT/AzTEC 1.1 mm Survey of dense cores in the Monoceros R2 giant molecular cloud
Wilson, G. W.; Schloerb, F. P.; Luna, A. +7 more
We present a 1.1 mm census of dense cores in the Mon R2 giant molecular cloud with the AzTEC instrument on the Large Millimetre Telescope. We detect 295 cores (209 starless and 86 with protostars) in a two square degree shallow survey. We also carry out a deep follow-up survey of nine regions with low to intermediate (3 < AV < 7) …
Value-added Catalogs of M-type Stars in LAMOST DR5
Chen, Li; Zhong, Jing; Li, Jing +3 more
We present new catalogs of M giant and M dwarf stars from the Large Sky Area Multi-Object Fibre Spectroscopic Telescope (LAMOST) data release 5 (DR5). In total, 39,796 M giants and 501,152 M dwarfs are identified from the classification pipeline. The template-fitting results contain M giants with 7 temperature subtypes from M0 to M6, M dwarfs with…
Nonparametric Dark Energy Reconstruction Using the Tomographic Alcock-Paczynski Test
Sabiu, Cristiano G.; Park, Hyunbae; Li, Yun-He +7 more
The tomographic Alcock-Paczynski (AP) method can result in tight cosmological constraints by using small and intermediate clustering scales of the large-scale structure of the galaxy distribution. By focusing on the redshift dependence, the AP distortion can be distinguished from the distortions produced by the redshift space distortions. In this …
Revisiting Kepler-444. I. Seismic modeling and inversions of stellar structure
Buldgen, G.; Farnir, M.; Khan, S. +10 more
Context. The CoRoT and Kepler missions have paved the way for synergies between exoplanetology and asteroseismology. The use of seismic data helps providing stringent constraints on the stellar properties which directly impact the results of planetary studies. Amongst the most interesting planetary systems discovered by Kepler, Kepler-444 is uniqu…
Extraction of globular clusters members with Gaia DR2 astrometry
Bustos Fierro, Iván H.; Calderón, J. H.
In this work, we present a method to identify possible members of globular clusters using data from Gaia DR2. The method consists of two stages: the first one based on a clustering algorithm, and the second one based on the analysis of the projected spatial distribution of stars with different proper motions. In order to confirm that the clusters …
The core of the massive cluster merger MACS J0417.5-1154 as seen by VLT/MUSE
Mahler, Guillaume; Richard, Johan; Massey, Richard +11 more
We present a multiwavelength analysis of the core of the massive galaxy cluster MACS J0417.5-1154 (z = 0.441). Our analysis takes advantage of Very Large Telescope/Multi-Unit Spectroscopic Explorer observations which allow the spectroscopic confirmation of three strongly lensed systems. System #1, nicknamed The Doughnut, consists of three images o…
Deriving the Hubble constant using Planck and XMM-Newton observations of galaxy clusters
Mazzotta, Pasquale; Sereno, Mauro; Rasia, Elena +2 more
The possibility of determining the value of the Hubble constant using observations of galaxy clusters in X-ray and microwave wavelengths through the Sunyaev Zel'dovich (SZ) effect has long been known. Previous measurements have been plagued by relatively large errors in the observational data and severe biases induced, for example, by cluster tria…