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Aided by microbes found in the subarctic conditions of Canada’s Hudson Bay, an international team – including researchers from Portugal’s Instituto Superior de Agronomia and Técnico, Canada’s Universi...
Interpreting the relationship between galaxy luminosity, color, and environment
galaxy luminosity color environment
2014/12/24
We study the relationship between galaxy luminosity, color, and environment in a cosmological simulation of galaxy formation. Using a simple prescription to assign colors and luminosities to simulated...
The 2Mass Color-magnitude Diagram of the Center of the Sagittarius Dwarf Galaxy: Photometric Measurements of a Surprisingly High Mean Metallicity
abundances stellar
2014/12/23
We present the Two Micron All Sky Survey (2MASS) (J−K, K) color-magnitude diagram for the region within 1◦ of the center of the Sagittarius dwarf spheroidal galaxy. Using the slope of the ...
COLOR-MAGNITUDE RELATION AND MORPHOLOGY OF LOW-REDSHIFT ULIRGs IN SLOAN DIGITAL SKY SURVEY
color-magnitude morphological analysis
2014/12/20
We present color-magnitude and morphological analysis of 54 low-redshift ultraluminous infrared galaxies (ULIRGs; 0.018 < z < 0.265 with z median = 0.151), a subset of the Infrared Astronomical Satell...
Velocity Evolution and the Intrinsic Color of Type Ia Supernovae
Velocity Evolution Intrinsic Colo Type Ia Supernovae
2011/10/11
To understand how best to use observations of Type Ia supernovae (SNe Ia) to obtain precise and accurate distances, we investigate the relations between spectra of SNe Ia and their intrinsic colors. U...
PRIMUS: The dependence of AGN accretion on host stellar mass and color
PRIMUS:dependence accretion stellar mass color
2011/10/13
We present evidence that the incidence of active galactic nuclei (AGN) and the distribution of their accretion rates do not depend on the stellar masses of their host galaxies, contrary to previous st...
Galactic S Stars: Investigations of Color, Motion, and Spectral Features
Galactic S Stars: Investigations Motion Spectral Features
2011/10/12
Known bright S stars, recognized as such by their enhanced s-process abundances and C/O ratio, are typically members of the asymptotic giant branch (AGB) or the red giant branch (RGB). Few modern digi...
Lunar Eclipse of June, 15, 2011: Three-color umbra surface photometry
Lunar Eclipse Three-color umbra
2011/9/29
The paper contains the preliminary result description of the photometric observations of the Moon surface during the total lunar eclipse of June, 15, 2011 conducted in southern Russia and Ukraine in t...
Studies of Diffuse Interstellar Bands. V. Pairwise Correlations of Eight Strong DIBs and Neutral Hydrogen, Molecular Hydrogen, and Color Excess
ISM lines and bands − ISM molecules
2010/11/15
We establish correlations between equivalent widths of eight diffuse interstel-lar bands (DIBs), and examine their correlations with atomic hydrogen, molec-ular hydrogen, and EB−V . The DIBs are...
Brightness and color of the integrated starlight at celestial, ecliptic and galactic poles
Brightness color integrated starlight celestial ecliptic galactic poles
2010/11/15
From photoelectric observations of night sky brightness carried out at Abu-Simbel, Asaad et al. (1979) have obtained values of integrated starlight brightness at different Galactic latitudes. These da...
The Deepest HST Color-Magnitude Diagram of M32: Evidence for Intermediate-Age Populations
Local Group—galaxies individual M32 M31—galaxies elliptical and lenticular
2010/11/10
We present the deepest optical color-magnitude diagram (CMD) to date of the local elliptical galaxy M32.We have obtained F435W and F555W photometry based on Hubble Space Telescope ACS/HRC images for a...
Mass loss rates inferred from mid-IR color excesses of LMC and SMC O stars
Solar and Stellar Astrophysics (astro-ph.SR) Galaxy Astrophysics (astro-ph.GA)
2011/1/6
We use a combination of VJHK and Spitzer} [3.6], [5.8] and [8.0] photometry, to determine IR excesses in a sample of LMC and SMC O stars.
Magnetohydrostatic equilibrium in starspots: dependences on color (T_{eff}) and surface gravity (g)
Solar and Stellar Astrophysics (astro-ph.SR)
2010/12/23
Temperature contrasts and magnetic field strengths of sunspot umbrae broadly follow the thermal-magnetic relationship obtained from magnetohydrostatic equilibrium.
Color Magnitude Relation and Morphology of Low-Redshift ULIRGs in SDSS
Color Magnitude Relation Low-Redshift ULIRGs
2010/3/8
We present color-magnitude and morphological analysis of 54 low-redshift ULIRGs, a subset of the IRAS 1Jy sample (Kim & Sanders, 1998), in the SDSS. The ULIRGs are on average 1 magnitude brighter in M...
Comparison of Solar Motion relative to Stars of Different Color Index in the Solar Neighborhood
Solar Motion Solar Different Color Index
2009/6/26
Comparison of Solar Motion relative to Stars of Different Color Index in the Solar
Neighborhood。