We present the serendipitous discovery of a physical pair of quasars with estimated cosmological redshift z = 1.76. Long-slit spectroscopic observations of the...
Double-lined Spectroscopic Binaries in the APOGEE DR16 and DR17 Data
APOGEE spectra offer ≲1 km s -1 precision in the measurement of stellar radial velocities. This holds even when multiple stars are captured in the same spectrum...
easyspec: An Open-source Python Package for Long-slit Spectroscopy
In modern-day astronomy, near-infrared, optical, and ultraviolet spectroscopy are indispensable for studying a wide range of phenomena, from measuring black...
EMIR: the GTC NIR multi-object imager-spectrograph
We present the final global design and performances of EMIR, the NIR multiobject spectrograph of the GTC, as well as the plan for its early scientific...
Emission lines in EX Lup optical spectrum (Sipos+, 2009)
A high-resolution optical spectrum of EX Lupi was obtained on 2007 July 30 with FEROS at the 2.2m MPG/ESO telescope in ESO La Silla, Chile. The spectrum shows...
Empirical calibration of the near-IR Ca triplet (Cenarro+ 2001)
File table contains details of the new near-IR stellar library observed to calibrate the Ca II triplet. It includes the indices CaT*, CaT and PaT measured over...
Empirical calibration of the near-IR Ca triplet (Cenarro+ 2001)
File table contains details of the new near-IR stellar library observed to calibrate the Ca II triplet. It includes the indices CaT*, CaT and PaT measured over...
Evaluation of a Magnetic Field Inversion Method Using Only Stokes I
We compare a method for inferring the photospheric vector magnetic field using only spectroscopy to a conventional method based on polarimetry. The magnetic...