Science Archives Publication System

Relation of internal attenuation, dust emission, and the size of spiral galaxies. Calibration at low-z and how to use it as a cosmological test at high-z

DOI: 10.1051/0004-6361/202140851 Bibcode: 2021A&A...652A..83L

López-Corredoira, M.; Gutiérrez, C. M.

Aims: Dust in spiral galaxies produces emission in the far-infrared (FIR) and internal absorption in visible wavelengths. However, the relation of the two amounts is not trivial because optical absorption may saturate, but the FIR emission does not. Moreover, the volume concentration of dust plays a role in the relation of absorption and emis…

2021 • Astronomy and Astrophysics

AKARI 0

Relationship between magnetic field properties and statistical flow using numerical simulation and magnetic feature tracking on solar photosphere

DOI: 10.1093/mnras/stab710 Bibcode: 2021MNRAS.503.3610T

Oba, T.; Iida, Y.; Hotta, H. +1 more

We perform radiative magnetohydrodynamic calculations for the solar-quiet region to investigate the dependence of statistical flow on magnetic properties and the three-dimensional structure of magnetic patches in the presence of large-scale flow that mimics differential rotation. It has been confirmed that strong magnetic field patches move faster…

2021 • Monthly Notices of the Royal Astronomical Society

Hinode 0

Erratum: "Cassini Composite Infrared Spectrometer (CIRS) Observations of Titan 2004-2017" (2019, ApJS, 244, 14)

DOI: 10.3847/1538-4365/ac324b Bibcode: 2021ApJS..257...70N

Bézard, Bruno; Vinatier, Sandrine; Lellouch, Emmanuel +16 more

2021 • The Astrophysical Journal Supplement Series

Cassini 0

Simulating re-impacts from craters at the deepest location of Phobos to generate its blue spectral units

DOI: 10.1016/j.icarus.2020.113997 Bibcode: 2021Icar..35413997K

Kikuchi, Hiroshi

The spatial distribution pattern of ejecta from an impact crater on the surface of a body in space holds clues to understanding the ejecta launch conditions, the crater excavation process, and the dynamical environment. In particular, focusing on re-impact sites from larger or deeper craters on the surface is important, as they tend to preserve mu…

2021 • Icarus

MEx 0

The Thermal Reprocessing of Reflected Radiation in the AGN Accretion Disk

DOI: 10.3847/1538-4357/abec7f Bibcode: 2021ApJ...912..113Z

Wang, Jiancheng; Zhong, Xiaogu

We present a reflected reprocessing model to study the thermal lag-wavelength relationship in the AGN accretion disk. The main radiation produced from the corona assumed with the lamppost geometry on the axis of the black hole irradiates the accretion disk to affect the temperature structure via reflection processes. Considering the thermal emissi…

2021 • The Astrophysical Journal

XMM-Newton 0

Contribution of Binary Stars to the Velocity Dispersion inside OB Associations with Gaia DR2 Data

DOI: 10.1134/S106377292033001X Bibcode: 2021ARep...65...71M

Melnik, A. M.; Dambis, A. K.

We estimated the contribution of binary systems to the velocity dispersion inside OB-associations derived from Gaia DR2 proper motions. The maximum contribution to the velocity dispersion is given by the systems with the period of revolution of $P = 5.9$ yr whose components shift by a distance of about the diameter of the system during the base-li…

2021 • Astronomy Reports

Gaia 0

M dwarf spectral indices at moderate resolution: accurate T_eff and [Fe/H] for 178 southern stars

DOI: 10.1093/mnras/stab2831 Bibcode: 2021MNRAS.508.5148C

Lorenzo-Oliveira, Diego; Costa-Almeida, Ellen; Porto de Mello, Gustavo F. +2 more

We present a spectroscopic and photometric calibration to derive effective temperatures T_eff and metallicities [Fe/H] for M dwarfs, based on a principal component analysis (PCA) of 147 spectral indices measured off moderate resolution (R~11 000), high S/N (>100) spectra in the λλ 8390-8834 region, plus the J-H colour. Internal uncert…

2021 • Monthly Notices of the Royal Astronomical Society

Gaia 0

Étude des signatures aqueuses martiennes par spectroscopie infrarouge : des nuages à l'altération des régions polaires

Bibcode: 2021PhDT........51S

Stcherbinine, Aurélien

Study of Martian aqueous signature through infrared spectroscopy: from clouds to polar regions alteration

On Mars, the major infrared signature of the surface consists of a broad absorption band at 3 µm. It is mainly associated with the presence of H2O molecules or –OH groups and provides insight about the presence of water ice and the hydrat…

2021 • Ph.D. Thesis

ExoMars-16 MEx 0

Machine Learning applied to Lunar Data to Characterize Potential Sites for Future Science, Mobile Exploration, Utilization, lunar Bases and Moon Villages.

DOI: 10.5194/egusphere-egu21-16141 Bibcode: 2021EGUGA..2316141D

Foing, Bernard; den Heijer, Daniël

The lunar south pole is of particular interest to researchers because of its unique geographical features. It contains craters where the near-constant sunlight does not reach the interior. These craters are of enormous importance in the process of human exploration of the moon.This research aims to develop an identification algorithm applied to LR…

2021 • EGU General Assembly Conference Abstracts

SMART-1 0

Analytical study of the newly discovered open cluster Gulliver 1

DOI: 10.1080/20909977.2020.1860610 Bibcode: 2021JAsGe..10...35E

Tadross, A. L.; Ismail, M. N.; Elhosseiny, Eslam G. +3 more

2021 • NRIAG Journal of Astronomy and Geophysics

Gaia 0