搜索结果: 1-15 共查到“天体物理学 spectroscopic”相关记录27条 . 查询时间(0.062 秒)
Spectroscopic analysis of interaction between an EIT wave and a coronal upflow region
Spectroscopic analysis of interaction between an EIT wave and a coronal upflow region
2011/10/20
We report a spectroscopic analysis of an EIT wave event that occurred in active region 11081 on 2010 June 12 and was associated with an M2.0 class flare. The wave propagated near circularly. The south...
Spectroscopic evidence for helicity in explosive events
Sun: UV radiation—Sun: transition region— Sun: chromosphere
2011/9/30
We report spectroscopic observations in support of a novel view of transition region explosive events, observations that lend empirical evidence that at least in some cases explosive events may be not...
The Galactic O-Star Spectroscopic Survey
The Galactic O-Star Spectroscopic Survey Solar and Stellar Astrophysics
2011/1/11
We present a massive spectroscopic survey of Galactic O stars, GOSSS, based on new, high signal-to-noise ratio, R~2500 blue-violet digital observations from both hemispheres. The sample size and selec...
Spectroscopic observations of a sample of dwarf spirals galaxies. I.Oxygen abundances
Spectroscopic observations dwarf spirals galaxies
2011/1/13
The oxygen abundances for four dwarf spiral galaxies have been determined using long-slit spectroscopy. The abundances of these galaxies have not previously reported in the literature. Several HII reg...
Spectroscopic observations of a sample of dwarf spiral galaxies. II- Abundance gradients
dwarf spiral galaxies Abundance gradients
2010/11/10
The oxygen gradient of four dS galaxies has been determined using abundances for several
Hii regions determined with four different methods. The gradient slopes of the three non-barred
galaxies in t...
An Ultraviolet Spectroscopic Atlas of Local Starbursts and Star-Forming Galaxies: The Legacy of FOS and GHRS
line profiles atlases ultraviolet galaxies galaxies high-redshift galaxies
2010/11/9
We present 46 rest-frame ultraviolet (UV) spectra of 28 local starburst and star-forming galaxies which were observed with the Faint Object Spectrograph (FOS) and the Goddard High Resolution Spectrogr...
Orbital Solutions for Two Young, Low-Mass Spectroscopic Binaries in Ophiuchus
binaries spectroscopic — starslT Tauri — techniqueslradial velocities
2010/11/9
We report the orbital parameters for ROXR1 14 and RX J1622.7-2325Nw, two young, low-mass, and double-lined spectroscopic binaries recently discovered in the Ophiuchus star forming region.
High-resolution spectroscopic view of planet formation sites
planetary systems protoplanetary disks hydrodynamics line pro les
2010/11/15
Theories of planet formation predict the birth of giant planets in the inner, dense, and
gas-rich regions of the circumstellar disks around young stars. These are the regions from which strong CO emi...
Spectroscopic [CI] mapping of the infrared dark cloud G48.65-0.29
Galaxy Astrophysics (astro-ph.GA)
2011/1/7
We report the first spectroscopic mapping of an atomic carbon line in an infrared dark cloud (IRDC).
The Type Ib SN 1999dn: One Year of Photometric and Spectroscopic Monitoring
Solar and Stellar Astrophysics (astro-ph.SR)
2011/1/6
Extensive optical and near-infrared (NIR) observations of the type Ib supernova 1999dn are presented, covering the first year after explosion. These new data turn this object, already considered a pro...
Revisiting the Hubble sequence in the SDSS DR7 spectroscopic sample: a publicly available bayesian automated classification
Cosmology and Extragalactic Astrophysics (astro-ph.CO) Instrumentation and Methods for Astrophysics (astro-ph.IM)
2011/1/5
We present an automated morphological classification in 4 types (E,S0,Sab,Scd) of ~700.000 galaxies from the SDSS DR7 spectroscopic sample based on support vector machines. The main new property of th...
An optical spectroscopic survey of the 3CR sample of radio galaxies with z<0.3. III. Completing the sample
Cosmology and Extragalactic Astrophysics (astro-ph.CO)
2010/12/27
We present optical nuclear spectra for nine 3CR radio sources obtained with the Telescopio Nazionale Galileo, that complete our spectroscopic observations of the sample up to redshifts $<$ 0.3. We mea...
The Gaia Spectroscopic Instrument (RVS): A Technical Challenge
Instrumentation and Methods for Astrophysics (astro-ph.IM)
2010/12/23
The lack of radial velocity data in the Hipparcos catalogue was considered a significant deficiency, so when Gaia was conceived, a spectrometer was a core constituent of its payload. The Gaia Radial V...
Constraints of a pulsation frequency on stellar parameters in the eclipsing spectroscopic binary system: V577 Oph
binaries: eclipsing — binaries spectroscopic — stars fundamental parameters — stars
2010/11/15
We present a preliminary spectroscopic analysis of the binary system V577Oph, observed during the summer of 2007 on the 2.6m NOT telescope on La Palma. We have obtained time series spectroscopic obser...
Spectroscopic Study of ‘CO’ and its Isotopic mm/Submillimeter Lines from Dark Cloud Lynds 183
Radiative transfer—molecular spectral lines—temperature gradient
2010/9/15
We have made spectral line analysis of CO and its isotopic lines from dark cloud Lynds 183 (L183). Our dataset incorporates 12CO(1–– – 0), 13CO(1–– – 0) and 13CO(2–– – 1) lines using NRAO-12m and 12CO...