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Related papers: Molecular Hydrogen and [FeII] in Active Galactic N…

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We report high spatial (0.5 arcsec) and high spectral (9 km/s) resolution spectro-imaging of the 2.12 micron H2 1-0 S(1) line in the proto-planetary nebula AFGL 618 using BEAR at the CFHT. The observations reveal the presence of multiple,…

Astrophysics · Physics 2009-11-07 P. Cox , P. J. Huggins , J. -P. Maillard , C. Muthu , R. Bachiller , T. Forveille

We report near-infrared spectroscopic data for the Seyfert 2 galaxy Mrk 78, taken with the LIRIS near-infrared camera/spectrometer at the William Herschel Telescope (WHT). The long-slit spectra clearly show extended emission. The resolution…

We have mapped the stellar and gaseous kinematics, as well as the emission-line flux distributions and ratios, from the inner 450pc radius of Mrk1157, using 2D near-IR spectra obtained with the Gemini NIFS at a spatial resolution of 35pc.…

Cosmology and Nongalactic Astrophysics · Physics 2015-05-28 Rogemar A. Riffel , Thaisa Storchi-Bergmann

We present results from a survey searching for spatially resolved near-infrared line emission from molecular hydrogen gas in the circumstellar environments of nine young stars: AA Tau, AB Aur, DoAr 21, GG Tau, GM Aur, LkCa 15, LkH$\alpha$…

Solar and Stellar Astrophysics · Physics 2019-11-06 Tracy L. Beck , Jeffrey S. Bary

We present long-slit H- and K-band spectroscopy of the low-mass outflow source SVS 13, obtained with the adaptive-optics assisted imager-spectrometer NACO on the VLT. With a spatial resolution of < 0.25 arcsec and a pixel scale of 0.027…

Astrophysics · Physics 2009-11-13 C. J. Davis , B. Nisini , M. Takami , T. -S. Pyo , M. D. Smith , E. Whelan , T. P. Ray , A. Chrysostomou

We present near-infrared and optical emission-line and stellar kinematics of the Seyfert 2 galaxy Mrk 573 using the Near-Infrared Field Spectrograph (NIFS) at Gemini North and Dual Imaging Spectrograph (DIS) at Apache Point Observatory,…

We explore the influence of optical Fe II quasi-continuum on the measured spectral parameters in the 4150-5500 A range for the spectra of Type 1 active galactic nuclei (AGNs). We assume that the broad line region is composed of two…

Astrophysics of Galaxies · Physics 2023-11-01 Luka Č. Popović , Jelena Kovačević-Dojčinović , Ivan Dojčinović , Maša Lakićević

The physical origin of the large-scale conformity in the colours and specific star formation rates of isolated low mass central galaxies and their neighbours on scales in excess of 1 Mpc is still under debate. One possible scenario is that…

Astrophysics of Galaxies · Physics 2018-02-14 Guinevere Kauffmann

We detect near-infrared H2 emission in DG Tau using the Infrared Camera and Spectrograph (IRCS) on the 8.2-m SUBARU telescope. The spectra obtained along the jet axis show that the centroidal position of the 1-0 S(1) emission is offset by…

Astrophysics · Physics 2009-11-10 M. Takami , A. Chrysostomou , T. P. Ray , C. Davis , W. R. F. Dent , J. Bailey , M. Tamura , H. Terada

We have observed near-IR H$_2$ line emission on large scales in the Galactic center. Paper I discussed our 400 pc long strip map and 50 pc map of the H_2 v=1-0 S(1) line. In this paper, we present observations of the higher vibrational…

Astrophysics · Physics 2007-05-23 Soojong Pak , D. T. Jaffe , L. D. Keller

We present the results of high-resolution near-IR spectroscopy toward the multiple outflows around the Herbig Be star Lk{\Ha} 234 using the Immersion Grating Infrared Spectrograph (IGRINS). Previous studies indicate that the region around…

We present near-infrared and millimeter investigations of the nucleus of the infrared luminous galaxy NGC 4418, which previous observations suggest possesses a powerful buried AGN. We found the following main results: (1) The infrared…

Astrophysics · Physics 2009-11-10 Masatoshi Imanishi , Kouichiro Nakanishi , Nario Kuno , Kotaro Kohno

H2 is the most abundant molecule in the interstellar medium and is a useful tool to study photodissociation regions, where radiative feedback from massive stars on molecular clouds is dominant. The James Webb Space Telescope, with its high…

We present a two-dimensional mapping of the gas flux distributions, as well as of the gas and stellar kinematics in the inner 220 pc of the Seyfert galaxy NGC 2110, using K-band integral field spectroscopy obtained with the Gemini NIFS at a…

Astrophysics of Galaxies · Physics 2015-09-09 Marlon R. Diniz , Rogemar A. Riffel , Thaisa Storchi-Bergmann , Claudia Winge

Near-infrared imaging of the emission from molecular hydrogen is a powerful method for discovering outflows in star-forming regions. We present new near-infrared images, long slit and integral field spectroscopy of the ultra-compact HII…

Astrophysics · Physics 2009-11-13 S. P. Todd , S. K. Ramsay Howat

We have systematically investigated ultraviolet (UV) emission from molecular hydrogen (H$_{2}$) using the Interface Region Imaging Spectrometer (IRIS), during three X-ray flares of C5.1, C9.7 and X1.0 classes on Oct. 25, 2014. Significant…

Solar and Stellar Astrophysics · Physics 2023-09-15 Sargam M. Mulay , Lyndsay Fletcher , Hugh Hudson , Nicolas Labrosse

The star formation rate (SFR) is one of the most fundamental parameters of galaxies, but nearly all of the standard SFR diagnostics are difficult to measure in active galaxies because of contamination from the active galactic nucleus (AGN).…

Astrophysics of Galaxies · Physics 2023-08-21 Ming-Yang Zhuang , Luis C. Ho , Jinyi Shangguan

Nitric oxide is an open-shell molecule abundantly detected in the interstellar medium. A precise modeling of its radiative and collisional processes opens the path to a precise estimate of its abundance. We present here the first rate…

Astrophysics of Galaxies · Physics 2022-05-11 M. Ben Khalifa , J. Loreau

H_2O submillimeter emission is a powerful diagnostic of the molecular interstellar medium in a variety of sources, including low- and high-mass star forming regions of the Milky Way, and from local to high redshift galaxies. However, the…

A sensitive broadband molecular line survey of the Sagittarius B2(N) star-forming region has been obtained with the HIFI instrument on the Herschel Space Observatory, offering the first high-spectral resolution look at this well-studied…

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