中文
相关论文

相关论文: The Extragalactic Distance Database: All Digital H…

200 篇论文

Archival data have been combined with recent observations of the Galactic plane using the Very Large Array to create new catalogs of compact centimetric radio sources. The 20 cm source catalog covers a longitude range of -20 deg < l < 120…

天体物理学 · 物理学 2008-11-26 Richard L. White , Robert H. Becker , David J. Helfand

We introduce the NASA/IPAC Extragalactic Database (NED) Local Volume Sample (NED-LVS), a subset of $\sim$1.9 million objects with distances out to 1000~Mpc. We use UV and IR fluxes available in NED from all-sky surveys to derive physical…

Using the newly available infrared images of the Hubble Deep Field in the J, H, and K bands and an optimal photometric method, we have refined a technique to estimate the redshifts of 1067 galaxies. A detailed comparison of our results with…

天体物理学 · 物理学 2009-10-30 A. Fernandez-Soto , K. M. Lanzetta , A. Yahil

This is the third in a series of papers in which we assemble and analyze a homogeneous catalog of peculiar velocity data. In Papers I and II, we described the Tully-Fisher (TF) redshift-distance samples that constitute the bulk of the…

Studies of the Diffuse Ionized Gas (DIG) have progressed without providing so far any strict criterion to distinguish DIGs from HII regions. In this work, we compile the emission line measurements of 29 galaxies that are available in the…

星系天体物理 · 物理学 2009-10-14 N. Flores-Fajardo , C. Morisset , L. Binette

From May to July 2004, the central radian of the Galactic Plane was scanned by the H.E.S.S. (High Energy Stereoscopic System) telescopes at energies above 200 GeV. This survey was performed from -$3^o$ to +$3^o$ in latitude, for a total of…

天体物理学 · 物理学 2016-08-15 A. Lemiere , R. Terrier , A. Djannati-Ataï

Within the "Cosmic Flows" project, I-band photometry of 524 relatively nearby galaxies has been carried out over the course of several years with the University of Hawaii 2.2m telescope and a camera with a 7.5 arcmin field of view. The…

宇宙学与河外天体物理 · 物理学 2015-05-27 Helene M. Courtois , R. Brent Tully , Philippe Heraudeau

A new database from the NASA/IPAC Extragalactic Database (NED) of galaxy Distances (NED-D), normally the source for the newest precision-based estimates, provides access to the oldest redshift-independent extragalactic distances in the…

天体物理仪器与方法 · 物理学 2011-02-01 Ian Steer

We model the distribution of the observed profiles of 21 cm line emission from neutral hydrogen (HI) in central galaxies selected from a statistically representative mock catalog of the local Universe in the Lambda-cold dark matter…

星系天体物理 · 物理学 2021-05-12 Aseem Paranjape , R. Srianand , Tirthankar Roy Choudhury , Ravi K. Sheth

The 64-m Parkes telescope, equipped with the 21-cm multibeam receiver, has completed a sensitive survey (typically 6 mJy per beam rms) for HI galaxies in the Zone of Avoidance accessible to the telescope, 196 < l < 52 deg, and |b| < 5 deg.…

天体物理学 · 物理学 2007-05-23 Patricia A. Henning , Renee C. Kraan-Korteweg , Lister Staveley-Smith

We present narrowband H-alpha imaging data of a small survey of nearby edge-on spiral galaxies, aiming at the detection of `extraplanar' diffuse ionized gas (DIG). A few of our studied edge-on spirals show signs of disk-halo interaction…

天体物理学 · 物理学 2007-05-23 J. Rossa , R. -J. Dettmar

From the Lyon-Meudon Extragalactic Database LEDA, we constructed a sample of 27,000 galaxies with radial velocities smaller than 15,000 km s$^{-1}$. From this first sample we selected the 5,683 largest galaxies which constitute a sample…

天体物理学 · 物理学 2016-08-30 Helene Di Nella , Georges Paturel

We present a catalog of spectroscopically measured redshifts over $0 < z < 2$ and emission line fluxes for 1440 galaxies. The majority ($\sim$65\%) of the galaxies come from the HALO7D survey, with the remainder from the DEEPwinds program.…

A high latitude HI 21 cm-line absorption survey toward extragalactic sources was recently completed using the Giant Meterwave Radio Telescope (GMRT). A total of 104 sources with mod(b) > 15 deg. and with a 21 cm flux density greater than 1…

天体物理学 · 物理学 2007-05-23 K. S. Dwarakanath

Galactic HI emission profiles in an area where several large-scale filaments at velocities ranging from -46 km/s to 0 km/s overlap were decomposed into Gaussian components. Eighteen families of components defined by similarities of center…

星系天体物理 · 物理学 2015-06-15 Gerrit L Verschuur

The application of artificial neural networks (ANNs) for the estimation of HI gas mass fraction (\fgas) is investigated, based on a sample of 13,674 galaxies in the Sloan Digital Sky Survey (SDSS) with HI detections or upper limits from the…

星系天体物理 · 物理学 2016-12-07 Hossen Teimoorinia , Sara L. Ellison , David R. Patton

The NASA/IPAC Extragalactic Database (NED) is an impressive tool for finding near-exhaustive information on millions of astrophysical objects. Here, we outline a small systematic error that occurs in NED because a low-redshift approximation…

宇宙学与河外天体物理 · 物理学 2023-01-30 Anthony Carr , Tamara Davis

An all-sky catalog of 18020 disc-like galaxies is presented. The galaxies are selected from the Extended Source Catalog of the Two Micron All-Sky Survey (XSC 2MASS) basing on their 2MASS axial ratio a/b >= 3. The Catalog contains data on…

天体物理学 · 物理学 2007-05-23 S. N. Mitronova , I. D. Karachentsev , V. E. Karachentseva , T. H. Jarrett , Yu. N. Kudrya

The Herschel Extragalactic Legacy Project (HELP) focuses to publish an astronomical multiwavelength catalogue of millions of objects over 1300~deg$^2$ of the Herschel Space Observatory survey fields. Millions of galaxies with…

星系天体物理 · 物理学 2020-06-17 Katarzyna Malek , Veronique Buat , Denis Burgarella , Yannick Roehlly , Raphael Shirley , the HELP team