Search Publications
Survey of Ices toward Massive Young Stellar Objects. I. OCS, CO, OCN-, and CH3OH
Boogert, A. C. A.; Brewer, K.; Brittain, A. +1 more
An important tracer of the origin and evolution of cometary ices is the comparison with ices found in dense clouds and toward young stellar objects (YSOs). We present a survey of ices in the 2-5 µm spectra of 23 massive YSOs, taken with the NASA InfraRed Telescope Facility SpeX spectrometer. The 4.90 µm absorption band of OCS ice is de…
Bridging Optical and Far-infrared Emission-line Diagrams of Galaxies from Local to the Epoch of Reionization: Characteristic High [O III] 88 µm/SFR at z > 6
Harikane, Yuichi; Inoue, Akio K.; Hashimoto, Takuya +3 more
We present photoionization modeling of galaxy populations at z ∼ 0, 2, and >6 to bridge optical and far-infrared (FIR) emission-line diagrams. We collect galaxies with measurements of optical and/or FIR ([O III] 88 µm and [C II] 158 µm) emission-line fluxes and plot them on the [O III]λ5007/Hβ-[N II]λ6585/Hα (BPT) and L([O III]…
SOFIA Observations of Far-IR Fine-structure Lines in Galaxies to Measure Metallicity
Spinoglio, Luigi; Fernández-Ontiveros, Juan Antonio; Malkan, Matthew A. +8 more
We present new and archival SOFIA FIFI-LS far-IR spectroscopic observations of the [O III] 52 µm and/or the [N III] 57 µm lines of 25 local galaxies. Including 31 other galaxies from Herschel-PACS, we discuss a local sample of 47 galaxies, including the H II galaxies, luminous IR galaxies, low-metallicity dwarfs, and Seyfert nuclei. An…
[C II] Map of the Molecular Ring and Arms of the Spiral Galaxy NGC 7331
Fadda, Dario; Sutter, Jessica
We present the [C II] 157.7 µm map of galaxy NGC 7331 obtained with the Field-Imaging Far-Infrared Line Spectrometer on board the Stratospheric Observatory for Infrared Astronomy (SOFIA). This map extends an existent Herschel/Photodetector Array Camera and Spectrometer observation of the central strip of the galaxy to encompass the entire mo…
The Extremely Buried Nucleus of IRAS 17208-0014 Observed at Submillimeter and Near-infrared Wavelengths
Onishi, Shusuke; Nakagawa, Takao; Baba, Shunsuke +6 more
The ultraluminous infrared galaxy IRAS 17208-0014 is a late-stage merger that hosts a buried active galactic nucleus (AGN). To investigate its nuclear structure, we performed high-spatial-resolution ( ~ 0.″04 ~ 32 pc) Atacama Large Millimeter/submillimeter Array (ALMA) observations in Band 9 (~450 µm or ~660 GHz), along with near-infrared AK…
Detection of the S(1) Rotational Line of H2 toward IRC+10216: A Simultaneous Measurement of the Mass-loss Rate and CO Abundance
Cernicharo, J.; Fonfría, J. P.; Richter, M. J. +2 more
We report the first detection of the S(1) pure rotational line of ortho-H2 at 17.04 µm in an asymptotic giant branch star, using observations of IRC+10216 with the Echelon-cross-echelle Spectrograph (EXES) mounted on the Stratospheric Observatory for Infrared Astronomy. This line, which was observed in a very high-sensitivity spec…
Detection of a Broad 8 µm UIR Feature in the Mid-infrared Spectrum of WR 125 Observed with Subaru/COMICS
Onaka, Takashi; Sakon, Itsuki; Williams, Peredur M. +3 more
We present the detection of a broad 8 µm feature in newly formed dust around the carbon-rich Wolf-Rayet (WC) binary WR 125 from N-band low-resolution (NL; R ~ 250) spectroscopy between 7.3 and 13.6 µm and N-band (11.7 µm) and Q-band (18.8 µm) imaging with Subaru/COMICS in 2019 October. WR 125 is a colliding-wind binary (WC7…
H1821+643: The Most X-Ray and Infrared Luminous Active Galactic Nucleus (AGN) in the Swift/BAT Survey in the Process of Rapid Stellar and Supermassive Black Hole Mass Assembly
Hashimoto, Takuya; Ricci, Claudio; Izumi, Takuma +6 more
H1821+643 is the most X-ray luminous nonbeamed active galactic nucleus (AGN) of L 14-150 keV = 5.2 × 1045 erg s-1 in the Swift/Burst Alert Telescope (BAT) ultrahard X-ray survey, and it is also a hyperluminous infrared (IR) galaxy L IR = 1013.2 L ⊙ residing in the center of a massiv…
Toward Understanding the B[e] Phenomenon. VIII. Nature and Variability of IRAS 07080+0605
Miroshnichenko, A. S.; Manset, N.; Zharikov, S. V. +13 more
We report the results of spectroscopic and photometric observations of the emission-line object IRAS 07080+0605 carried out in 2004-2021. We found that the object is significantly underluminous for its spectroscopic properties (T eff = 8500 ± 500 K, $\mathrm{log}$ g = 2.0 ± 0.5), if a strong visual attenuation by a factor of ~43 found t…
SOFIA/FORCAST Monitoring of the Dust Emission from R Aqr: Start of the Eclipse
Gorti, Uma; Whitelock, Patricia A.; Wagner, R. Mark +3 more
We present mid-infrared (mid-IR) spectra from our continued monitoring of R Aquarii, the nearest symbiotic Mira, using the Stratospheric Observatory for Infrared Astronomy (SOFIA). New photometric and spectroscipic data were obtained with the Faint Object infraRed CAmera for the SOFIA Telescope in 2018 and 2019 after the system had started its "ec…