The 6dF galaxy survey: fundamental plane data

We report the 6dFGS Fundamental Plane (6dFGSv) catalogue that is used to estimate distances and peculiar velocities for nearly 9000 early-type galaxies in the local (z < 0.055) universe. Velocity dispersions are derived by cross-correlation from 6dF V-band spectra with typical S/N of 12.9 Å−1 for a sample of 11 315 galaxies; the median velocity dispersion is 163 km s−1 and the median measurement error is 12.9 per cent. The photometric Fundamental Plane (FP) parameters (effective radii and surface brightnesses) are determined from the JHK 2MASS images for 11 102 galaxies. Comparison of the independent J- and K-band measurements implies that the average uncertainty in XFP, the combined photometric parameter that enters the FP, is 0.013 dex (3 per cent) for each band. Visual classification of morphologies was used to select a sample of nearly 9000 early-type galaxies that form 6dFGSv. This catalogue has been used to study the effects of stellar populations on galaxy scaling relations, to investigate the variation of the FP with environment and galaxy morphology, to explore trends in stellar populations through, along and across the FP, and to map and analyse the local peculiar velocity field

PENGARUH TERPAAN BERITA PERKOSAAN DI TRIBUNNEWS.COM TERHADAP SIKAP WASPADA MAHASISWI

The research problem in this research includes whether there is the influence of rape news of UGM female student in Tribunnews.com towards female students vigilant attitude in interact and how the influence imposed. Variable X in this research is rape news, while vigilant attitude of female students in interact is variable Y. Quantitative research is implemented by means of associative type. In addition, the basic research is survey method. The population in this study is female students second period of KKN 2018/2019 University of Muhammadiyah Malang and 36 of them become the research sample. Questionnaires and documentation are implemented as data collection techniques. Validity and reliability test are also implemented as the research instrument test. Furthermore, the researcher conducts simple linear regression and hypothesis testing using the t test as data analysis techniques. The coefficient of variable X is 0.716 (positive). From the analysis results obtained that R square result (the coefficient of determination) is 0.130. R value (the correlation coefficient) is 0.361, it shows the correlation between news rape of UGM female student in Tribunnews.com towards female students vigilant attitude in interact (Y) are included in a weak category. On the other hand, t table (α = 0.05; df residual = 34) is 1.690. Since t arithmetic > t table is 2.255 > 1.690 or sig. t value (0.031) < α = 0.05, the influence of X (rape news of UGM female student in Tribunnews.com) towards Y (female students vigilant attitude in interact) is significant. In accordance with the analysis above, it can be concluded that 13% of female students vigilant attitude in interact variable (Y) is influenced by independent variable, namely rape news of UGM female student in Tribunnews.com, and yet 87% of female students vigilant attitude in interact variable is influenced by other variables

A Statistical Study of Galactic SNRs using the PMN Survey

The Parkes-MIT-NRAO (PMN) radio survey has been used to generate a quasi all-sky study of Galactic Supernova Remnants (SNRs) at a common frequency of 4.85 GHz. We present flux densities estimated for the sample of 110 Southern Galactic SNRs (up to Dec = - 65 deg.) observed with the Parkes 64-m radio telescope and an additional sample of 54 from the Northern PMN (up to Dec = +64 deg.) survey undertaken with the Green Bank 43-m (20 SNRs) and 91-m (34 SNRs) radio telescopes. Out of this total sample of 164 selected SNRs (representing 71% of the 231 known SNRs in the Green catalogue) we consider 138 to provide reliable estimates of flux density and surface brightness distribution. This sub-sample represents those SNRs which fall within carefully chosen selection criteria which minimises the effects of the known problems in establishing reliable fluxes from the PMN survey data. Our selection criteria are based on a judicious restriction of source angular size and telescope beam together with careful evaluation of fluxes on a case by case basis. This gives confidence in the newly derived PMN fluxes when the selection criteria are respected. We find a sharp drop off in the flux densities for Galactic SNRs beyond 4 Jy and then a fairly flat distribution from 5-9 Jy, a slight decline and a further flat distribution from 9-20 Jy though the numbers of SNR in each Jy bin are low. We also re-visit the contentious Sigma-D relation to determine a new power law index for a sub-sample of shell type SNRs which yields beta= -2.2 +/- 0.6. This new evaluation of the Sigma-D relation, applied to the restricted sample, provides new distance estimates and their Galactic scale height distribution. We find a peak in the SNR distribution between 7-11 kpc with most restricted to +/- 100 pc Galactic scale height.Comment: 14 pages, 7 figures. Accepted for publishing in Astrophysics and Space Scienc

The WHAM Northern Sky Survey and the Nature of the Warm Ionized Medium in the Galaxy

The Wisconsin H-Alpha Mapper (WHAM) has completed a velocity-resolved map of diffuse H-alpha emission of the entire northern sky, providing the first comprehensive picture of both the distribution and kinematics of diffuse ionized gas in the Galaxy. WHAM continues to advance our understanding of the physical conditions of the warm ionized medium through observations of other optical emission lines throughout the Galactic disk and halo. We discuss some highlights from the survey, including an optical window into the inner Galaxy and the relationship between HI and HII in the diffuse ISM.Comment: 9 pages, 3 figures. To be published in "How does the Galaxy work?", eds. E.J. Alfaro, E. Perez & J. Franco, Kluwer, held 23-27 June 2003 in Granada, Spain. Higher resolution version available at http://www.astro.wisc.edu/~madsen/prof/pubs.htm

Author Correction: The messy death of a multiple star system and the resulting planetary nebula as observed by JWST

Stars and planetary system

Discovering interacting binaries with Halpha surveys

otherPeer reviewe

Five WC9 stars discovered in the AAO/UKST Ha survey

Peer reviewe

New Galactic Planetary nebulae selected by radio and multiwavelength characteristics

We have used the Cornish radio catalogue combined with the use of multiwavelength data to identify 62 new Planetary Nebula (PN) candidates close to the Galactic mid-plane. Of this sample 11 have weak optical counterparts in deep narrow band Ha imaging that allows their spectroscopic follow-up. We have observed eight of these candidates spectroscopically, leading to the confirmation of seven out of eight as PNe. All but one of our sample of newly detected PNe appear to be of Type I chemistry with very large [NII]/Ha ratios. This indicates that our selection method heavily favours detection of this kind of PN. Cornish is a low- Galactic latitude survey where young objects and Type I PNe (thought to derive from higher mass progenitors) are more plentiful, but where optical extinction is large. The very high success rate in correctly identifying PNe in this zone proves the efficacy of our radio and multiple multiwavelength diagnostic tools used to successfully predict and then confirm their PN nature, at least in the cases where an optical counterpart is found and has been observed. The study reinforces the effective use of a combination of multiwavelength and optical data in the identification of new Galactic PNe and especially those of Type I chemistries whose dusty environments often prevents their easy detection in the optical regime alone. © 2018 The Author(s).University of Hong Kong 16BRTT150-1064This research made use of data from SuperCOSMOS H? Survey (AAO/UKST) and the HASH research platform. We are grateful to the South African Astronomical Observatory for generous awards of telescope time for the follow-up optical spectroscopy. The first author thanks the University of Hong Kong for the provisions of a PhD scholarship. We thank the Scientific and Technological Research Council of Turkey (TUBITAK) for partial support in using the RTT 150 (Russian-Turkish 1.5-m telescope in Antalya) under project number 16BRTT150-1064