NASA/IPAC EXTRAGALACTIC DATABASE
Date and Time of the Query: 2019-06-17 T16:47:58 PDT
Help | Comment | NED Home

For refcode 2008ApJ...686L..17C:
Retrieve 8 NED objects in this reference.
Please click here for ADS abstract

NED Abstract

Copyright by American Astronomical Society. Reproduced by permission
2008ApJ...686L..17C The Hidden H I-Massive Luminous Infrared Galaxy HIZOA J0836-43: Inside-Out Galaxy Formation Cluver, M. E.; Jarrett, T. H.; Appleton, P. N.; Kraan-Korteweg, R. C.; Woudt, P. A.; Koribalski, B. S.; Donley, J. L.; Wakamatsu, K.; Nagayama, T. Abstract. HIZOA J0836-43 is an extreme gas-rich (M_HI_ = 7.5 x 10^10^ M_sun_) disk galaxy which lies hidden behind the strongly obscuring Vela region of the Milky Way. Utilizing observations from the Spitzer Space Telescope, we have found it to be a luminous infrared starburst galaxy with a star formation rate of ~21 M_sun_ yr^-1^, arising from exceptionally strong molecular PAH emission (L_7.7 micron_=1.50x10^9^ L_sun_) and far-infrared emission from cold dust. The galaxy exhibits a weak mid-infrared continuum compared to other star-forming galaxies and U/LIRGs. This relative lack of emission from small grains suggests atypical interstellar medium conditions compared to other starbursts. We do not detect significant [Ne V] or [O IV], which implies an absent or very weak AGN. The galaxy possesses a prominent bulge of evolved stars and a stellar mass of 4.4(+/-1.4) x 10^10^ M_sun_. With its plentiful gas supply and current star formation rate, a doubling of stellar mass would occur on a timescale of ~2 Gyr. Compared to local galaxies, HIZOA J0836-43 appears to be a "scaled up" spiral undergoing inside-out formation, possibly resembling stellar disk building processes at intermediate redshifts. Key words: galaxies: individual (HIZOA J0836-43), Galaxies: Starburst, Infrared: Galaxies
Retrieve 8 NED objects in this reference.
Please click here for ADS abstract

Back to NED Home