Spectroscopy of High-Redshift Supernovae from the ESSENCE Project: The First 2 Years | Zendy

T. Matheson | Zendy; S. Blondin | Zendy; R. J. Foley | Zendy; R. Chornock | Zendy; A. V. Filippenko | Zendy; B. Leibundgut | Zendy; R. Chris Smith | Zendy; J. Sollerman | Zendy; J. Spyromilio | Zendy; R. Kirshner | Zendy; A. Clocchiatti | Zendy; Claudio Aguilera | Zendy; B. Barris | Zendy; A. C. Becker | Zendy; Peter Challis | Zendy; R. Covarrubias | Zendy; P. Garnavich | Zendy; M. Hicken | Zendy; Saurabh W. Jha | Zendy; K. Krisciunas | Zendy; Weidong Li | Zendy; Anthony Miceli | Zendy; G. Miknaitis | Zendy; J. L. Prieto | Zendy; A. Rest | Zendy; Adam G. Riess | Zendy; M. Salvo | Zendy; B. Schmidt | Zendy; C. W. Stubbs | Zendy; N. B. Suntzeff | Zendy; J. Tonry | Zendy

AI Assistant Blog Pricing

Home ZAIA Blog

Open Access

Spectroscopy of High-Redshift Supernovae from the ESSENCE Project: The First 2 Years

Author(s) -

T. Matheson,

S. Blondin,

R. J. Foley,

R. Chornock,

A. V. Filippenko,

B. Leibundgut,

R. Chris Smith,

J. Sollerman,

J. Spyromilio,

R. Kirshner,

A. Clocchiatti,

Claudio Aguilera,

B. Barris,

A. C. Becker,

Peter Challis,

R. Covarrubias,

P. Garnavich,

M. Hicken,

Saurabh W. Jha,

K. Krisciunas,

Weidong Li,

Anthony Miceli,

G. Miknaitis,

J. L. Prieto,

A. Rest,

Adam G. Riess,

M. Salvo,

B. Schmidt,

C. W. Stubbs,

N. B. Suntzeff,

J. Tonry

Publication year - 2005

Publication title -

the astronomical journal

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 2.61

H-Index - 271

eISSN - 1538-3881

pISSN - 0004-6256

DOI - 10.1086/429679

Subject(s) - redshift , physics , astrophysics , galaxy , supernova , astronomy , luminosity , stars

We present the results of spectroscopic observations of targets discoveredduring the first two years of the ESSENCE project. The goal of ESSENCE is touse a sample of ~200 Type Ia supernovae (SNe Ia) at moderate redshifts (0.2 < z< 0.8) to place constraints on the equation of state of the Universe.Spectroscopy not only provides the redshifts of the objects, but also confirmsthat some of the discoveries are indeed SNe Ia. This confirmation is criticalto the project, as techniques developed to determine luminosity distances toSNe Ia depend upon the knowledge that the objects at high redshift are the sameas the ones at low redshift. We describe the methods of target selection andprioritization, the telescopes and detectors, and the software used to identifyobjects. The redshifts deduced from spectral matching of high-redshift SNe Iawith low-redshift SNe Ia are consistent with those determined from host-galaxyspectra. We show that the high-redshift SNe Ia match well with low-redshifttemplates. We include all spectra obtained by the ESSENCE project, including 52SNe Ia, 5 core-collapse SNe, 12 active galactic nuclei, 19 galaxies, 4 possiblyvariable stars, and 16 objects with uncertain identifications.Comment: 38 pages, 9 figures (many with multiple parts), submitted to A

The content you want is available to Zendy users.

Already have an account? Click here to sign in.

Having issues? You can contact us here

Accelerating Research