Search Results - "Kassis, Marc"
-
1
Episodic mass loss in binary evolution to the Wolf-Rayet phase: Keck and HST proper motions of RY Scuti's nebula
Published in Monthly notices of the Royal Astronomical Society (01-12-2011)“…Binary mass transfer via -Roche lobe overflow (RLOF) is a key channel for producing stripped-envelope Wolf-Rayet (WR) stars and may be critical to account for…”
Get full text
Journal Article -
2
MIRSI, A Mid-Infrared Spectrometer and Imager: Performance Results from the IRTF
Published in Publications of the Astronomical Society of the Pacific (01-12-2008)“…The Mid-Infrared Spectrometer and Imager (MIRSI) is a mid-infrared camera system built at Boston University for ground-based observing. MIRSI offers complete…”
Get full text
Journal Article -
3
DISTRIBUTED LOW-MASS STAR FORMATION IN THE IRDC G34.43+00.24
Published in The Astrophysical journal (04-08-2014)Get full text
Journal Article -
4
Keck-I MOSFIRE spectroscopy of compact star-forming galaxies at z ≳ 2: high velocity dispersions in progenitors of compact quiescent galaxies
Published in The Astrophysical journal (10-11-2014)“…We present Keck-I MOSFIRE near-infrared spectroscopy for a sample of 13 compact star-forming galaxies (SFGs) at redshift 2 ≤ z ≤ 2.5 with star formation rates…”
Get full text
Journal Article -
5
Asteroseismology of the Nearby K Dwarf σ Draconis Using the Keck Planet Finder and TESS
Published in The Astrophysical journal (01-11-2024)“…Abstract Asteroseismology of dwarf stars cooler than the Sun is very challenging owing to the low amplitudes and rapid timescales of oscillations. Here we…”
Get full text
Journal Article -
6
Upgrades to W. M. Keck observatory detector systems
Published in Astronomische Nachrichten (01-10-2023)“…We report on our plans to upgrade the detector systems in the 2022–2024 time frame for three of the workhorse instruments (NIRC2, DEIMOS, and NIRES) operated…”
Get full text
Journal Article -
7
DISTRIBUTED LOW-MASS STAR FORMATION IN THE IRDC G34.43+00.24
Published in The Astrophysical journal (20-08-2014)“…We have used deep near-infrared observations with adaptive optics to discover a distributed population of low-mass protostars within the filamentary Infrared…”
Get full text
Journal Article -
8
W. M. Keck observatory instrumentation status and future direction
Published in Astronomische Nachrichten (01-10-2023)“…Since the start of science operations in 1993, the twin 10‐m W. M. Keck Observatory (WMKO) telescopes have continued to maximize their scientific impact and to…”
Get full text
Journal Article -
9
Semi-annual oscillations in Saturn's low-latitude stratospheric temperatures
Published in Nature (08-05-2008)“…Observations of oscillations of temperature and wind in planetary atmospheres provide a means of generalizing models for atmospheric dynamics in a diverse set…”
Get full text
Journal Article -
10
-
11
Diverse Protostellar Evolutionary States in the Young Cluster AFGL961
Published in The Astrophysical journal (10-07-2009)Get full text
Journal Article -
12
DIVERSE PROTOSTELLAR EVOLUTIONARY STATES IN THE YOUNG CLUSTER AFGL961
Published in The Astrophysical journal (10-07-2009)“…We present arcsecond resolution mid-infrared and millimeter observations of the center of the young stellar cluster AFGL961 in the Rosette molecular cloud…”
Get full text
Journal Article -
13
Silicate Emission Profiles from Low-Mass Protostellar Disks in the Orion Nebula: Evidence for Growth and Thermal Processing of Grains
Published in The Astrophysical journal (10-06-2006)“…We present 8-13 km low-resolution spectra (R k 100) of eight low-mass protostellar objects ("proplyds") in the Orion Nebula using the Long Wavelength…”
Get full text
Journal Article -
14
Mid-Infrared Emission at Photodissociation Regions in the Orion Nebula
Published in The Astrophysical journal (01-02-2006)“…The mid-infrared emission from a photodissociation region (PDR) viewed edge-on in the Orion Nebula is examined through 8.7-20.6 km images and 8-13 km spectra…”
Get full text
Journal Article -
15
Liger at W.M. Keck Observatory: imager structural analysis, fabrication, and characterization plan
Published 24-09-2024“…Proc. SPIE 13096, Ground-based and Airborne Instrumentation for Astronomy X, 130967B (18 July 2024) Liger is an adaptive optics (AO) fed imager and integral…”
Get full text
Journal Article -
16
-
17
Calibration Unit Design for High-Resolution Infrared Spectrograph for Exoplanet Characterization (HISPEC)
Published 16-11-2023“…The latest generation of high-resolution spectrograph instruments on 10m-class telescopes continue to pursue challenging science cases. Consequently, ever more…”
Get full text
Journal Article -
18
Staring at the Sun with the Keck Planet Finder: An Autonomous Solar Calibrator for High Signal-to-Noise Sun-as-a-Star Spectra
Published 08-11-2023“…Extreme precision radial velocity (EPRV) measurements contend with internal noise (instrumental systematics) and external noise (intrinsic stellar variability)…”
Get full text
Journal Article -
19
Liger at Keck Observatory: Imager Detector and IFS Pick-off Mirror Assembly
Published 16-08-2022“…Proc. SPIE 12184, Ground-based and Airborne Instrumentation for Astronomy IX, 12184-224 (July 2022) Liger is a next-generation near-infrared imager and…”
Get full text
Journal Article -
20
Liger at Keck Observatory: Design of Imager Optical Assembly and Spectrograph Re-Imaging Optics
Published 16-08-2022“…Proc. SPIE 12184, Ground-based and Airborne Instrumentation for Astronomy IX, 12184-230 (July 2022) Liger is an adaptive optics (AO) fed imager and integral…”
Get full text
Journal Article