Results 81 to 90 of about 476,629 (275)
DEEP OPTICAL PHOTOMETRY OF SIX FIELDS IN THE ANDROMEDA GALAXY [PDF]
The Astrophysical Journal Supplement Series, 2009 Using the Advanced Camera for Surveys on the Hubble Space Telescope, we have obtained deep optical images reaching well below the oldest main sequence turnoff in six fields of the Andromeda Galaxy. The fields fall at four positions on the southeast minor axis, one position in the giant stellar stream, and one position on the northeast major axis. These
Vandenberg, Don +9 more
openaire +3 more sources
Cosmology with Galaxy Photometry Alone [PDF]
arXiv, 2023 We present the first cosmological constraints using only the observed photometry of galaxies. Villaescusa-Navarro et al. (2022; arXiv:2201.02202) recently demonstrated that the internal physical properties of a single simulated galaxy contain a significant amount of cosmological information.
arxiv
Advanced Science, EarlyView.This study examines the effects of Shank3 mutation on the mesoaccumbens pathway using a Shank3‐deficient rat model. The findings reveal altered social reward processing in these rats, accompanied by changes in dopaminergic and GABAergic neural activity within the ventral tegmental area (VTA) and dopamine release in the nucleus accumbense (NAc ...
Marie Barbier +4 more
wiley +1 more source
Optical spectroscopy and photometry of SAX J1808.4−3658 in outburst [PDF]
Monthly Notices of the Royal Astronomical Society, 2009 We present phase resolved optical spectroscopy and photometry of V4580 Sagittarii, the optical counterpart to the accretion powered millisecond pulsar SAX J1808.4-3658, obtained during the 2008 September/October outburst. Doppler tomography of the N III 4640.64 Bowen blend emission line reveals a focused spot of emission at a location consistent with ...
Mark Reynolds +12 more
openaire +7 more sources
LGS AO Science Impact: Present and Future Perspectives
, 2008 The recent advent of laser guide star adaptive optics (LGS AO) on the largest ground-based telescopes has enabled a wide range of high angular resolution science, previously infeasible from ground-based and/or space-based observatories.
Liu, Michael C.
core +1 more source
Discovery of a 66 mas Ultracool Binary with Laser Guide Star Adaptive Optics [PDF]
, 2007 We present the discovery of 2MASS J21321145+1341584AB as a closely separated (0.066") very low-mass field dwarf binary resolved in the near-infrared by the Keck II Telescope using laser guide star adaptive optics. Physical association is deduced from the
Adam J. Burgasser +8 more
core +2 more sources
Regulation of PVT‐CeA Circuit in Deoxynivalenol‐Induced Anorexia and Aversive‐Like Emotions
Advanced Science, EarlyView.The study investigates Deoxynivalenol (DON) effects on feeding and emotions, focusing on the central amygdala (CeA). Acute DON exposure reduces food intake and alters behavior, linked to CeAGABA neuron activity and PVT‐CeA connectivity. Manipulating CeAGABA neurons and using SCN10A antagonist A‐803467 alleviate DON's effects, offering potential ...
Liu‐Nan Yang +4 more
wiley +1 more source
Optical and infrared photometry of Arakelian 120 [PDF]
Publications of the Astronomical Society of the Pacific, 1978 Optical and IR photometry of the Seyfert class 1 galaxy Arakelian 120 covering the wavelength range from 0.36 to 3.5 microns is reported. The observed fluxes are found to consist of contributions of starlight from the surrounding galaxy, emission lines, thermal gas continuum, nonthermal radiation, and possible IR emission from dust.
openaire +2 more sources
Deep Impact: Optical spectroscopy and photometry obtained at MIRA [PDF]
Icarus, 2007 11 pages, 16 figures, 2 Appendices; original ...
Russell G. Walker +3 more
openaire +3 more sources
Optical photometry of the eclipsing Large Magellanic Cloud supersoft source CAL 87 [PDF]
, 1997 We present optical photometry of the eclipsing supersoft source, CAL87. These observations comprise long term data accumulated as a by-product of the MACHO Project, and high speed white light photometry of a single eclipse. We (i) derive an improved ephemeris of To = HJD 2450111.5144(3) + 0.44267714(6)E for the time of minimum light, (ii) find the ...
arxiv +1 more source