Results 141 to 150 of about 121,582 (238)

A Near-infrared Search for Helium in the Superluminous Supernova SN 2024ahr

The Astrophysical Journal
We present a detailed study of SN 2024ahr, a hydrogen-poor superluminous supernova (SLSN-I), for which we determine a redshift of z = 0.0861. SN 2024ahr has a peak absolute magnitude of M _g ≈ M _r ≈ −21 mag, rest-frame rise and decline times (50% of ...
Harsh Kumar, Edo Berger, Peter K. Blanchard, Sebastian Gomez, Daichi Hiramatsu, Moira Andrews, K. Azalee Bostroem, Yize Dong, Joseph Farah, Estefania Padilla Gonzalez, D. Andrew Howell, Curtis McCully, Darshana Mehta, Megan Newsome, Aravind P. Ravi, Giacomo Terreran   +15 more
doaj   +1 more source

A Detection of Helium in the Bright Superluminous Supernova SN 2024rmj

The Astrophysical Journal
We present extensive ultraviolet, optical, and near-infrared (NIR) photometric and spectroscopic observations of the nearby hydrogen-poor superluminous supernova (SLSN-I) SN 2024rmj at z = 0.1189.
Harsh Kumar, Edo Berger, Peter K. Blanchard, Daichi Hiramatsu, Sebastian Gomez, Alex Gagliano, Moira Andrews, K. Azalee Bostroem, Joseph Farah, D. Andrew Howell, Curtis McCully   +10 more
doaj   +1 more source

A Formally Motivated Retrieval Framework Applied to the High-resolution Transmission Spectrum of HD 189733 b

The Astronomical Journal
Ground-based high-resolution spectra provide a powerful tool for characterizing exoplanet atmospheres. However, they are greatly hampered by the dominating telluric and stellar lines, which need to be removed prior to any analysis.
Doriann Blain, Alejandro Sánchez-López, Paul Mollière   +2 more
doaj   +1 more source

Surveying the Giant H ii Regions of the Milky Way with SOFIA. VIII. W43 Main

The Astrophysical Journal
In this eighth paper of the Stratospheric Observatory For Infrared Astronomy-FORCAST series on Milky Way GH ii regions, we present an analysis of the massive star-forming complex W43 Main.
James M. De Buizer, Wanggi Lim, James T. Radomski, Nicole Karnath   +3 more
doaj   +1 more source

Development of near infrared and visible MKIDs (Microwave Kinetic Inductance Detectors) for astronomy.

, 2019
KIDs (Microwave Kinetic Inductance Detectors) by their ability to count photons, to measure their individual energies and to acquire images at very high rates are likely to allow an observational revolution in the visible and near infrared. A MKID detector is basically an LC superconducting resonator whose intrinsic resonance frequency is fixed by the ...
openaire   +1 more source

NEAR-INFRARED SPECTROSCOPY OF METHANOL AT THE 10−13 LEVEL FOR RADIO ASTRONOMY

This poster showcases the application of Noise-Immune Cavity-Enhanced Optical Heterodyne Molecular Spectroscopy (NICE-OHMS) for precision spectroscopy of methanol. This approach, invented almost thirty years ago1 and further developed as an optical precision tool, allows the measurement as Lamb-dips (see Figure 1 right panel) of extremely weak ...
Altman, Arthémise, Cozijn, F.M.J., Bogomolov, Alexandr, Libert, Alexis, Ubachs, Wim, Lauzin, Clément, High-Resolution Molecular Spectroscopy   +6 more
openaire   +1 more source

Galaxy Evolution with Manifold Learning. [PDF]

Entropy (Basel)
Takeuchi TT, Cooray S, Kano RR.
europepmc   +1 more source

<title>Wide-field near-infrared all-reflecting camera with Fabry-Perot for astronomy</title> [PDF]

SPIE Proceedings, 1995
Yinsheng Sun, Michael C. B. Ashley, John W. V. Storey   +2 more
openaire   +1 more source

Large-amplitude variability driven by giant dust storms on a planetary-mass companion. [PDF]

Sci Adv
Tan X, Zhang X, Marley MS, Zhou Y, Lew BWP, Miles BE, Batalha NE, Biller BA, Chauvin G, Hinkley S, Hoch KKW, Manjavacas E, Metchev S, Petrus S, Rickman E, Skemer A, Suárez G, Sutlieff BJ, Vos JM, Whiteford N.   +19 more
europepmc   +1 more source

Using wavelet decomposition to determine the dimension of structures from projected images. [PDF]

Proc Natl Acad Sci U S A
Mayboroda S, Spergel DN.
europepmc   +1 more source