CfA3: 185 TYPE Ia SUPERNOVA LIGHT CURVES FROM THE CfA

被引：392

作者：

Hicken, Malcolm ^{[1
,2
]}

Challis, Peter ^{[1
]}

Jha, Saurabh ^{[3
]}

Kirshner, Robert P. ^{[1
]}

Matheson, Tom ^{[4
]}

Modjaz, Maryam ^{[5
]}

Rest, Armin ^{[2
]}

Wood-Vasey, W. Michael ^{[6
]}

Bakos, Gaspar ^{[1
]}

Barton, Elizabeth J. ^{[7
]}

Berlind, Perry ^{[1
]}

Bragg, Ann ^{[8
]}

Briceno, Cesar ^{[9
]}

Brown, Warren R. ^{[1
]}

Caldwell, Nelson ^{[1
]}

Calkins, Mike ^{[1
]}

Cho, Richard ^{[1
]}

Ciupik, Larry ^{[10
]}

Contreras, Maria ^{[1
]}

Dendy, Kristi-Concannon ^{[11
]}

Dosaj, Anil ^{[1
]}

Durham, Nick ^{[1
]}

Eriksen, Kris ^{[12
]}

Esquerdo, Gil ^{[13
]}

Everett, Mark ^{[13
]}

Falco, Emilio ^{[1
]}

Fernandez, Jose ^{[1
]}

Gaba, Alejandro ^{[11
]}

Garnavich, Peter ^{[14
]}

Graves, Genevieve ^{[15
]}

Green, Paul ^{[1
]}

Groner, Ted ^{[1
]}

Hergenrother, Carl ^{[12
]}

Holman, Matthew J. ^{[1
]}

Hradecky, Vit ^{[1
]}

Huchra, John ^{[1
]}

Hutchison, Bob ^{[1
]}

Jerius, Diab ^{[1
]}

Jordan, Andres ^{[1
]}

Kilgard, Roy ^{[1
]}

Krauss, Miriam ^{[16
]}

Luhman, Kevin ^{[17
]}

Macri, Lucas ^{[18
]}

Marrone, Daniel ^{[1
]}

McDowell, Jonathan ^{[1
]}

McIntosh, Daniel ^{[19
]}

McNamara, Brian ^{[20
]}

Megeath, Tom ^{[1
]}

Mochejska, Barbara ^{[21
]}

Munoz, Diego ^{[1
]}

机构：

[1] Harvard Smithsonian Ctr Astrophys, Cambridge, MA 02138 USA

[2] Harvard Univ, Dept Phys, Cambridge, MA 02138 USA

[3] Rutgers State Univ, Dept Phys & Astron, Piscataway, NJ 08854 USA

[4] NOAO Gemini Sci Ctr, Natl Opt Astron Observ, Tucson, AZ 85719 USA

[5] Univ Calif Berkeley, Dept Astron, Berkeley, CA 94720 USA

[6] Univ Pittsburgh, Dept Phys & Astron, Pittsburgh, PA 15260 USA

[7] Univ Calif Irvine, Dept Phys & Astron, Irvine, CA 92697 USA

[8] Marietta Coll, Dept Phys, Marietta, OH 45750 USA

[9] Ctr Invest Astron CIDA, Merida 5101A, Venezuela

[10] Adler Planetarium & Astron Museum, Chicago, IL 60605 USA

[11] Univ N Carolina, Dept Phys & Astron, Chapel Hill, NC 27599 USA

[12] Univ Arizona, Tucson, AZ 85721 USA

[13] Planetary Sci Inst, Tucson, AZ 85719 USA

[14] Univ Notre Dame, Notre Dame, IN 46556 USA

[15] Univ Calif Santa Cruz, Santa Cruz, CA 95064 USA

[16] MIT, Cambridge, MA 02139 USA

[17] Penn State Univ, Dept Astron & Astrophys, University Pk, PA 16802 USA

[18] Texas A&M Univ, Dept Phys, George P & Cynthia W Mitchell Inst Fundamental Ph, College Stn, TX 77843 USA

[19] Univ Massachusetts, Dept Astron, Amherst, MA 01003 USA

[20] Univ Waterloo, Dept Phys & Astron, W Waterloo, ON N2L 3G1, Canada

[21] Copernicus Astron Ctr Warsaw, PL-00716 Warsaw, Poland

[22] Ohio State Univ, Dept Astron, McPherson Lab, Columbus, OH 43210 USA

[23] Univ Western Ontario, Dept Phys & Astron, London, ON N6A 3K7, Canada

[24] European So Observ, D-85748 Garching, Germany

来源：

ASTROPHYSICAL JOURNAL | 2009年 / 700卷 / 01期

关键词：

supernovae:; general; INFRARED PHOTOMETRY; ABSOLUTE MAGNITUDES; IMAGE SUBTRACTION; REDSHIFT; SHAPES; TIMESCALE; GALAXIES; UNIVERSE; CATALOG; MOTION;

D O I：

10.1088/0004-637X/700/1/331

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We present multiband photometry of 185 type-Ia supernovae (SNe Ia), with over 11,500 observations. These were acquired between 2001 and 2008 at the F. L. Whipple Observatory of the Harvard-Smithsonian Center for Astrophysics (CfA). This sample contains the largest number of homogeneously observed and reduced nearby SNe Ia (z less than or similar to 0.08) published to date. It more than doubles the nearby sample, bringing SN Ia cosmology to the point where systematic uncertainties dominate. Our natural system photometry has a precision of less than or similar to 0.02 mag in BV RIr'i' and less than or similar to 0.04 mag in U for points brighter than 17.5 mag. We also estimate a systematic uncertainty of 0.03 mag in our SN Ia standard system BV RIr'i' photometry and 0.07 mag for U. Comparisons of our standard system photometry with published SN Ia light curves and comparison stars, where available for the same SN, reveal agreement at the level of a few hundredths mag in most cases. We find that 1991bg-like SNe Ia are sufficiently distinct from other SNe Ia in their color and light-curve-shape/luminosity relation that they should be treated separately in light-curve/distance fitter training samples. The CfA3 sample will contribute to the development of better light-curve/distance fitters, particularly in the few dozen cases where near-infrared photometry has been obtained and, together, can help disentangle host-galaxy reddening from intrinsic supernova color, reducing the systematic uncertainty in SN Ia distances due to dust.

引用

页码：331 / 357

页数：27

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