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SN 2009bb: a Peculiar Broad-Lined Type Ic Supernova
Giuliano Pignata, Maximilian Stritzinger, Alicia Soderberg +23
Ultraviolet, optical, and near-infrared photometry and optical spectroscopy of the broad-lined Type Ic supernova (SN) 2009bb are presented, following the flux evolution from -10 to…
Internal kinematic and physical properties in a BCD galaxy: Haro 15 in detail
V. Firpo, G. Bosch, G. F. Hagele +2
We present a detailed study of the kinematic and physical properties of the ionized gas in multiple knots of the blue compact dwarf galaxy Haro 15. Using echelle and long slit spec…
Supernova 2008bk and Its Red Supergiant Progenitor
Schuyler D. Van Dyk, Tim J. Davidge, Nancy Elias-Rosa +8
We have obtained limited photometric and spectroscopic data for Supernova (SN) 2008bk in NGC 7793, primarily at >~ 150 d after explosion. We find that it is a Type II-Plateau (II-P…
The Galactic O-Star Spectroscopic Survey (GOSSS)
J. Maíz Apellániz, A. Sota, N. R. Walborn +6
We present a massive spectroscopic survey of Galactic O stars, GOSSS, based on new, high signal-to-noise ratio, R~2500 blue-violet digital observations from both hemispheres. The s…
The Carnegie Supernova Project: Light Curve Fitting with SNooPy
Christopher R. Burns, Maximilian Stritzinger, M. M. Phillips +13
In providing an independent measure of the expansion history of the Universe, the Carnegie Supernova Project (CSP) has observed 71 high-z Type Ia supernovae (SNe Ia) in the near-in…
The Distance to NGC 1316 (Fornax A) From Observations of Four Type Ia Supernovae
Maximilian Stritzinger, Chris Burns, Mark Phillips +13
The giant elliptical galaxy NGC 1316 (Fornax A) is a well-studied member of the Fornax Cluster and a prolific producer of Type Ia supernovae, having hosted four observed events sin…
On the Progenitor and Supernova of the SN 2002cx-like Supernova 2008ge
Ryan J. Foley, Armin Rest, Maximilian Stritzinger +6
We present observations of supernova (SN) 2008ge, which is spectroscopically similar to the peculiar SN 2002cx, and its pre-explosion site that indicate that its progenitor was pro…
Optical discovery of probable stellar tidal disruption flares
Sjoert van Velzen, Glennys R. Farrar, Suvi Gezari +6
Using archival SDSS multi-epoch imaging data (Stripe 82), we have searched for the tidal disruption of stars by super-massive black holes in non-active galaxies. Two candidate tida…
Early Results from the Galactic O-Star Spectroscopic Survey: C III Emission Lines in Of Spectra
Nolan R. Walborn, Alfredo Sota, Jesus Maiz Apellaniz +5
On the basis of an extensive new spectroscopic survey of Galactic O stars, we introduce the Ofc category, which consists of normal spectra with C III λ\lambda4647-4650-4652 emissio…
The Onfp Class in the Magellanic Clouds
Nolan R. Walborn, Ian D. Howarth, Christopher J. Evans +8
The Onfp class of rotationally broadened, hot spectra was defined some time ago in the Galaxy, where its membership to date numbers only eight. The principal defining characteristi…
On the multiplicity of the zero-age main-sequence O star Herschel 36
Julia I. Arias, Rodolfo H. Barba, Roberto C. Gamen +6
We present the analysis of high-resolution optical spectroscopic observations of the zero-age main-sequence O star Herschel 36 spanning six years. This star is definitely a multipl…