منابع مشابه
The Multiphase Halo of Ngc 891: Wiyn Hα and Bvi Imaging 1
We present new, deep optical images (BVI+Hα) of the interstellar medium (ISM) far above the plane of the edge-on Sb galaxy NGC 891. These sub-arcsecond (0. ′′ 8 − 0. ′′ 9) ground-based images give a direct visual view of two physically distinct " phases " of the thick interstellar disk of this galaxy. A dense, likely cold, phase of the thick disk ISM is observed in our BVI images as highly-stru...
متن کاملIntegral Field Unit Observations of NGC 891: Kinematics of the Diffuse Ionized Gas Halo
We present high and moderate spectral resolution spectroscopy of diffuse ionized gas (DIG) emission in the halo of NGC 891. The data were obtained with the SparsePak integral field unit at the WIYN Observatory. The wavelength coverage includes the [N II]λλ 6548, 6583, Hα, and [S II]λλ 6716, 6731 emission lines. Position-velocity (PV) diagrams, constructed using spectra extracted from four Spars...
متن کاملThe complete submillimetre spectrum of NGC 891
Submillimetre maps of NGC 891 have been obtained with the PRONAOS balloonborne telescope and with the ISOPHOT instrument on board the ISO satellite. In this article, we also gather data from IRAS and SCUBA to present the complete submillimetre spectrum of this nearby edge-on spiral galaxy. We derive submillimetre emission profiles along the major axis. The modified blackbody fits, assuming a si...
متن کاملLopsided galaxies : the case of NGC 891
It has been known for a long time that a large fraction of disc galaxies are lopsided. We simulate three different mechanisms that can induce lopsidedness: flyby interactions, gas accretion from cosmological filaments and ram pressure from the intergalactic medium. Comparing the morphologies, HI spectrum, kinematics and m = 1 Fourier components, we find that all of these mechanisms can induce l...
متن کاملSparsepak Observations of Diffuse Ionized Gas Halo Kinematics in Ngc 891
We present WIYN SparsePak observations of the diffuse ionized gas (DIG) halo of NGC 891. Preliminary results of an analysis of the halo velocity field reveal a clear gradient of the azimuthal velocity with z which agrees with results for the neutral gas. The magnitude of the gradient has been determined, using two independent methods, to be approximately 15 km s kpc. 1. Observations and Data Re...
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ژورنال
عنوان ژورنال: The Astrophysical Journal
سال: 2018
ISSN: 1538-4357
DOI: 10.3847/1538-4357/aae38a