Folatelli, Gaston, Phillips, M. M., Burns, Christopher R., Contreras, Carlos, Hamuy, Mario, Freedman, W. L., ...
We present the analysis of the first set of low-redshift Type Ia supernovae (SNe Ia) by the Carnegie Supernova Project. Well-sampled, high-precision optical (ugriBV) and near-infrared (NIR; YJHKs)...
Krisciunas, Kevin, Marion, G. H., Suntzeff, Nicholas B., Blanc, Guillaume, Bufano, Filomena, Candia, Pablo, ...
We obtained optical photometry of SN 2003gs on 49 nights, from 2 to 494 days after T(B_max). We also obtained near-IR photometry on 21 nights. SN 2003gs was the first fast declining Type Ia SN that...
SN 2003bg: The First Type IIb Hypernova (2009)
Hamuy, Mario, Deng, Jinsong, Mazzali, Paolo A., Morrell, Nidia I., Phillips, Mark M., Roth, Miguel, ...
Optical and near-infrared photometry and optical spectroscopy are reported for SN 2003bg, starting a few days after explosion and extending for a period of more than 300 days. Our early-time spectra...
Supernova 2003bg: the first type IIb hypernova (2009)
Hamuy, Mario, Deng, Jinsong, Mazzali, Paolo A., Morrell, Nidia I., Phillips, Mark M., Roth, Miguel, ...
Krisciunas, Kevin, Hamuy, Mario, Suntzeff, Nicholas B., Espinoza, Juan, Gonzalez, David, Gonzalez, Luis, ...
We present infrared photometry of SN 1999em, plus optical photometry, infrared photometry, and optical spectroscopy of SN 2003hn. Both objects were Type II-P supernovae. The V-[RIJHK] color curves of...
The ESSENCE project was a six year supernova search carried out with the CTIO 4-m telescope. We also obtained spectra with many of the world's largest ground-based telescopes and observed some of our...
Wang, Xiaofeng, Li, Weidong, Filippenko, Alexei V., Krisciunas, Kevin, Suntzeff, Nicholas B., Li, Junzheng, ...
We present extensive optical (UBVRI), near-infrared (JK) light curves and optical spectroscopy of the Type Ia supernova (SN) 2006X in the nearby galaxy NGC 4321 (M100). Our observations suggest that...
Optical Sky Brightness at Cerro Tololo Inter-American Observatory from 1992 to 2006 (2007)
Krisciunas, Kevin, Semler, Dylan R., Richards, Joseph, Schwarz, Hugo E., Suntzeff, Nicholas B., Vera, Sergio, ...
We present optical UBVRI sky brightness measures from 1992 through 2006. The data are based on CCD imagery obtained with the CTIO 0.9-m, 1.3-m, and 1.5-m telescopes. The B- and V-band data are in...
The peculiar SN 2005hk: Do some type Ia supernovae explode as deflagrations? (2007)
Phillips, M. M., Li, Weidong, Frieman, Joshua A., Blinnikov, S. I., DePoy, Darren, Prieto, José L., ...
The peculiar SN 2005hk: Do some type ia supernovae explode as deflagrations? (2007)
Phillips, M. M., Li, Weidong, Frieman, Joshua A., Blinnikov, S. I., DePoy, Darren, Prietro, Jose L., ...
Publicación ISI
The peculiar SN 2005hk: Do some type ia supernovae explode as deflagrations? (2007)
Phillips, M. M., Li, Weidong, Frieman, Joshua A., Blinnikov, S. I., DePoy, Darren, Prietro, Jose L., ...
Publicación ISI
Krisciunas, Kevin, Garnavich, Peter M., Stanishev, Vallery, Suntzeff, Nicholas B., Prieto, Jose Luis, Espinoza, Juan, ...
We present optical (UBVRI) and near-infrared (YJHK) photometry of the normal Type Ia supernova 2004S. We also present eight optical spectra and one near-IR spectrum of SN 2004S. The light curves and...
Optical and Near-Infrared Observations of the Peculiar Type Ia Supernova 1999ac (2006)
Phillips, Mark M., Krisciunas, Kevin, Suntzeff, Nicholas B., Abraham, R. G., Beckett, M. G., Bonati, M., ...
We present 39 nights of optical photometry, 34 nights of infrared photometry, and 4 nights of optical spectroscopy of the Type Ia SN 1999ac. This supernova was discovered two weeks before maximum...
Using Line Profiles to Test the Fraternity of Type Ia Supernovae at High and Low Redshifts (2006)
Blondin, Stéphane, Dessart, Luc, Leibundgut, Bruno, Branch, David, Höflich, Peter, Tonry, John L., ...
Using archival data of low-redshift (z < 0.01; Center for Astrophysics and SUSPECT databases) Type Ia supernovae (SNe Ia) and recent observations of high-redshift (0.16 < z < 0.64) SNe Ia, we study...
Using Line Profiles to Test the Fraternity of Type Ia Supernovae at High and Low Redshifts (2006)
Blondin, Stéphane, Dessart, Luc, Leibundgut, Bruno, Branch, David, Höflich, Peter, Tonry, John L., ...
Using archival data of low-redshift (z < 0.01; Center for Astrophysics and SUSPECT databases) Type Ia supernovae (SNe Ia) and recent observations of high-redshift (0.16 < z < 0.64) SNe Ia, we study...
Optical and near-infrared observations of the peculiar Type la supernova 1999ac (2006)
Phillips, Mark M., Krisciunas, Kevin, Suntzeff, Nicholas B., Abraham, R. G., Beckett, M. G., Bonati, Marco, ...
We present 39 nights of optical photometry, 34 nights of IR photometry, and 4 nights of optical spectroscopy of the Type la supernova 1999ac. This supernova was discovered 2 weeks before maximum...
Optical and near-infrared observations of the peculiar Type la supernova 1999ac (2006)
Phillips, Mark M., Krisciunas, Kevin, Suntzeff, Nicholas B., Abraham, R. G., Beckett, M. G., Bonati, Marco, ...
We present 39 nights of optical photometry, 34 nights of IR photometry, and 4 nights of optical spectroscopy of the Type la supernova 1999ac. This supernova was discovered 2 weeks before maximum...
Photometry of the Type Ia Supernovae 1999cc, 1999cl, and 2000cf (2005)
Krisciunas, Kevin, Prieto, Jose Luis, Garnavich, Peter M., Riley, Jessica-Lynn G., Rest, Armin, Stubbs, Christopher, ...
We present previously unpublished BVRI photometry of the Type Ia supernovae 1999cc and 2000cf along with revised photometry of SN 1999cl. We confirm that SN 1999cl is reddened by highly non-standard...
Supernova Cosmology and the ESSENCE project (2005)
Sollerman, Jesper, Aguilera, Claudio, Becker, Andy, Blondin, Stephane, Challis, Pete, Clocchiatti, Alejandro, ...
The proper usage of Type Ia supernovae (SNe Ia) as distance indicators has revolutionized cosmology, and added a new dominant component to the energy density of the Universe, dark energy. Following...
Hubble Space Telescope Observations of Nine High-Redshift ESSENCE Supernovae (2005)
Krisciunas, Kevin, Garnavich, Peter M., Challis, Peter, Prieto, Jose Luis, Riess, A. G., Barris, B., ...
We present broad-band light curves of nine supernovae ranging in redshift from 0.5 to 0.8. The supernovae were discovered as part of the ESSENCE project, and the light curves are a combination of...
Krisciunas, Kevin, Suntzeff, Nicholas B., Phillips, Mark M., Candia, Pablo, Prieto, Jose Luis, Antezana, R., ...
We present optical and/or infrared photometry of the Type Ia supernovae SN 1991T, SN 1991bg, SN 1999ek, SN 2001bt, SN 2001cn, SN 2001cz, and SN 2002bo. All but one of these supernovae have decline...
Krisciunas, Kevin, Phillips, Mark M., Suntzeef, Nicholas B., Persson, S. E., Hamuy, Mario, Antezana, Roberto, ...
We present near-infrared photometry of the Type la supernova (SN) 1999ee; also, optical and infrared photometry of the Type la SNe 2000bh, 2000ca, and 2001ba. For SNe 1999ee and 2000bh, we present...
Krisciunas, Kevin, Phillips, Mark M., Suntzeef, Nicholas B., Persson, S. E., Hamuy, Mario, Antezana, Roberto, ...
We present near-infrared photometry of the Type la supernova (SN) 1999ee; also, optical and infrared photometry of the Type la SNe 2000bh, 2000ca, and 2001ba. For SNe 1999ee and 2000bh, we present...
Hubble Diagrams of Type Ia Supernovae in the Near Infrared (2003)
Krisciunas, Kevin, Phillips, Mark M., Suntzeff, Nicholas B.
From observations of 7 Type Ia supernovae obtained during the last four years at the Las Campanas and Cerro Tololo Inter-American Observatories, along with previous published data for 9 supernovae,...
Krisciunas, Kevin, Phillips, Mark M., Suntzeff, Nicholas B., Persson, S. E., Hamuy, Mario, Antezana, Roberto, ...
We present near infrared photometry of the Type Ia supernova 1999ee; also, optical and infrared photometry of the Type Ia SNe 2000bh, 2000ca, and 2001ba. For SNe 1999ee and 2000bh we present the...
23 High Redshift Supernovae from the IfA Deep Survey: Doubling the SN Sample at z>0.7 (2003)
Barris, Brian J., Tonry, John, Blondin, Stephane, Challis, Peter, Chornock, Ryan, Clocchiatti, Alejandro, ...
We present photometric and spectroscopic observations of 23 high redshift supernovae spanning a range of z=0.34-1.03, 9 of which are unambiguously classified as Type Ia. These supernovae were...
Imaging and Demography of the Host Galaxies of High-Redshift Type Ia Supernovae (2003)
Williams, Benjamin F., Hogan, Craig J., Barris, Brian, Candia, Pablo, Challis, Peter, Clocchiatti, Alejandro, ...
We present the results of a study of the host galaxies of high redshift Type Ia supernovae (SNe Ia). We provide a catalog of 18 hosts of SNe Ia observed with the Hubble Space Telescope (HST) by the...
Evidence for an asymptotic giant branch star in the progenitor system of a type Ia supernova (2003)
Hamuy, Mario, Phillips, M. M., Suntzeff, Nicholas B., Maza, Jose, Gonzalez, L. E., Roth, Miguel, ...
A type Ia supernova (SN Ia), one of the two main classes of exploding stars, is recognized by the absence of hydrogen and the presence of elements such as silicon and sulphur in its spectra. These...
Cosmological Results from High-z Supernovae (2003)
Tonry, John L., Schmidt, Brian P., Barris, Brian, Candia, Pablo, Challis, Peter, Clocchiatti, Alejandro, ...
The High-z Supernova Search Team has discovered and observed 8 new supernovae in the redshift interval z=0.3-1.2. These independent observations, confirm the result of Riess et al. (1998a) and...
Optical and Infrared Photometry of the Nearby Type Ia Supernova 2001el (2002)
Krisciunas, Kevin, Suntzeff, Nicholas B., Candia, Pablo, Arenas, Jose, Espinoza, Juan, Gonzalez, David, ...
We present well sampled optical (UBVRI) and infrared (JHK) light curves of the nearby (~18.0 Mpc) Type Ia supernova SN 2001el, from 11 days before to 142 days after the time of B-band maximum. The...
A Brief History of Astronomical Brightness Determination Methods at Optical Wavelengths (2001)
In this brief article I review the history of astronomical photometry, touching on observations made by the ancient Chinese, Hipparchus and Ptolemy, the development of the concept (and definition) of...
Krisciunas, Kevin, Phillips, Mark M., Stubbs, Christopher, Rest, Armin, Miknaitis, Gajus, Riess, Adam G., ...
We present BVRI photometry of the Type Ia supernovae 1999da, 1999dk, 1999gp, 2000bk, and 2000ce, plus infrared photometry of three of these. These objects exhibit the full range of decline rates of...
The Luminosity of SN 1999by in NGC 2841 and the Nature of `Peculiar' Type Ia Supernovae (2001)
Garnavich, Peter M., Bonanos, Alceste Z., Krisciunas, Kevin, Jha, Saurabh, Kirshner, Robert P., Schlegel, Eric M., ...
We present UBVRIJHK photometry and optical spectroscopy of the so-called 'peculiar' Type Ia supernova 1999by in NGC 2841. The observations began one week before visual maximum light which is...
Krisciunas, Kevin, Hastings, N. C., Loomis, Karen, McMillan, Russet, Rest, Armin, Riess, Adam G., ...
From an analysis of SNe 1972E, 1980N, 1981B, 1981D, 1983R, 1998bu, 1999cl, and 1999cp we find that the intrinsic V-K colors of Type Ia SNe with multi-color light curve shape (MLCS) parameter -0.4 <...
I give a brief history of astronomical observatories as an institution. This includes: 1) observatories in Islam; 2) China and India; 3) early European observatories; 4) the rise of national...
The Recognition of Unusual Objects in the Sloan Digital Sky Survey Color System (1998)
Krisciunas, Kevin, Margon, Bruce, Szkody, Paula
We present 5 filter photometry of 21 carbon stars, 15 asteroids, 15 cataclysmic variables, 6 metal-poor stars, 5 Cepheids, 1775 field stars, blue horizontal branch (BHB) stars and RR Lyrae stars in...
New Photometry of the Hyades $\delta$ Scuti star V777 Tau (71 Tau) (1995)
Krisciunas, Kevin, Simon, Theodore, Crowe, Richard A., Roberts, Mavourneen
71 Tau was discovered to be a $\delta$ Scuti star by Horan (1979, AJ 84, 1770). To our knowledge no other photometry of this star has been published. 71 Tau is the second brightest X-ray source in...
Mode Identification of the Slowly Pulsating F0V Star V398 Aurigae (9 Aur) (1995)
Aerts, Conny, Krisciunas, Kevin
We have investigated the F0V star V398\,Aurigae (= 9 Aur) under the assumption that it is undergoing non-radial gravity mode oscillations and that the two principal periods given by Krisciunas et al....
A Search for $\gamma$ Doradus-Type Variable Stars in the Hyades (1995)
Krisciunas, Kevin, Crowe, Richard A., Luedeke, Kenneth D., Roberts, Mavourneen
$\gamma$ Doradus stars are photometrically variable early F-type stars on or just above the main sequence in the Hertzsprung-Russell Diagram. They vary by as much as 0.1 mag on time scales an order...
9 Aurigae: Strong Evidence for Non-Radial Pulsations (1994)
Krisciunas, Kevin, Griffin, Roger F., Guinan, Edward F., Luedeke, Kenneth D., McCook, George P.
We present further photometric observations of the unusual F0 V star 9 Aurigae and present evidence that this star's radial velocity, spectroscopic line widths and line depths are also variable with...
Errata in \em {Enclyclopedia of Cosmology} (1993)
I have noted a number of errors, most of them quite minor, in the {\em Encyclopedia of Cosmology} (New York and London: Garland), 1993, Norriss S. Hetherington, ed. The majority occur in my...
The Sign of Four: A new class of cool non-radially pulsating stars? (1993)
In this paper we discuss four early F-type variable stars whose periods are an order of magnitude slower than known pulsators of comparable luminosity. They cannot be stars undergoing simple radial...
Look Back Time, the Age of the Universe, and the Case for a Positive Cosmological Constant (1993)
We present explicit expressions for the calculation of cosmological look back time, for zero cosmological constant and arbitrary density parameter $\Omega$, which, in the limit as redshift becomes...
Strange Cases from the Files of Astronomical Sociology (1993)
What astronomer could not use his own surname because his father was beheaded for sorcery? Who built the only observatory worth $5 billion in today's money? Who had worse luck than YOU travelling...