共 48 条
[21]
Energy conditions bounds on f(T) gravity
[J].
Liu, Di
;
Reboucas, M. J.
.
PHYSICAL REVIEW D,
2012, 86 (08)

Liu, Di
论文数: 0 引用数: 0
h-index: 0
机构:
Ningbo Univ, Ctr Nonlinear Sci, Ningbo 315211, Zhejiang, Peoples R China
Ningbo Univ, Dept Phys, Ningbo 315211, Zhejiang, Peoples R China Ningbo Univ, Ctr Nonlinear Sci, Ningbo 315211, Zhejiang, Peoples R China

Reboucas, M. J.
论文数: 0 引用数: 0
h-index: 0
机构:
Ctr Brasileiro Pesquisas Fis, BR-22290180 Rio De Janeiro, RJ, Brazil Ningbo Univ, Ctr Nonlinear Sci, Ningbo 315211, Zhejiang, Peoples R China
[22]
Energy conditions in f(Q) gravity
[J].
Mandal, Sanjay
;
Sahoo, P. K.
;
Santos, J. R. L.
.
PHYSICAL REVIEW D,
2020, 102 (02)

Mandal, Sanjay
论文数: 0 引用数: 0
h-index: 0
机构:
Birla Inst Technol & Sci Pilani, Dept Math, Hyderabad Campus, Hyderabad 500078, India Birla Inst Technol & Sci Pilani, Dept Math, Hyderabad Campus, Hyderabad 500078, India

Sahoo, P. K.
论文数: 0 引用数: 0
h-index: 0
机构:
Birla Inst Technol & Sci Pilani, Dept Math, Hyderabad Campus, Hyderabad 500078, India Birla Inst Technol & Sci Pilani, Dept Math, Hyderabad Campus, Hyderabad 500078, India

Santos, J. R. L.
论文数: 0 引用数: 0
h-index: 0
机构:
UFCG Univ Fed Campina Grande, Unidade Acad Fis, BR-58429900 Campina Grande, PB, Brazil Birla Inst Technol & Sci Pilani, Dept Math, Hyderabad Campus, Hyderabad 500078, India
[23]
ISOTROPY OF UNIVERSE
[J].
MISNER, CW
.
ASTROPHYSICAL JOURNAL,
1968, 151 (2P1)
:431-&

MISNER, CW
论文数: 0 引用数: 0
h-index: 0
[24]
Modified gravity with ln R terms and cosmic acceleration
[J].
Nojiri, S
;
Odintsov, SD
.
GENERAL RELATIVITY AND GRAVITATION,
2004, 36 (08)
:1765-1780

Nojiri, S
论文数: 0 引用数: 0
h-index: 0
机构:
Natl Def Acad, Dept Appl Phys, Yokosuka, Kanagawa 2398686, Japan Natl Def Acad, Dept Appl Phys, Yokosuka, Kanagawa 2398686, Japan

Odintsov, SD
论文数: 0 引用数: 0
h-index: 0
机构: Natl Def Acad, Dept Appl Phys, Yokosuka, Kanagawa 2398686, Japan
[25]
VISCOUS UNIVERSES
[J].
PADMANABHAN, T
;
CHITRE, SM
.
PHYSICS LETTERS A,
1987, 120 (09)
:433-436

PADMANABHAN, T
论文数: 0 引用数: 0
h-index: 0

CHITRE, SM
论文数: 0 引用数: 0
h-index: 0
[26]
Constraining f(R) theories with the energy conditions
[J].
Perez Bergliaffa, S. E.
.
PHYSICS LETTERS B,
2006, 642 (04)
:311-314

Perez Bergliaffa, S. E.
论文数: 0 引用数: 0
h-index: 0
机构:
ICRANET, I-65100 Pescara, Italy ICRANET, I-65100 Pescara, Italy
[27]
Measurements of the cosmological parameters Omega and Lambda from the first seven supernovae at z>=0.35
[J].
Perlmutter, S
;
Gabi, S
;
Goldhaber, G
;
Goobar, A
;
Groom, DE
;
Hook, IM
;
Kim, AG
;
Kim, MY
;
Lee, JC
;
Pain, R
;
Pennypacker, CR
;
Small, IA
;
Ellis, RS
;
McMahon, RG
;
Boyle, BJ
;
Bunclark, PS
;
Carter, D
;
Irwin, MJ
;
Glazebrook, K
;
Newberg, HJM
;
Filippenko, AV
;
Matheson, T
;
Dopita, M
;
Couch, WJ
.
ASTROPHYSICAL JOURNAL,
1997, 483 (02)
:565-581

Perlmutter, S
论文数: 0 引用数: 0
h-index: 0
机构: UNIV CALIF BERKELEY, CTR PARTICLE ASTROPHYS, BERKELEY, CA 94720 USA

Gabi, S
论文数: 0 引用数: 0
h-index: 0
机构: UNIV CALIF BERKELEY, CTR PARTICLE ASTROPHYS, BERKELEY, CA 94720 USA

Goldhaber, G
论文数: 0 引用数: 0
h-index: 0
机构: UNIV CALIF BERKELEY, CTR PARTICLE ASTROPHYS, BERKELEY, CA 94720 USA

Goobar, A
论文数: 0 引用数: 0
h-index: 0
机构: UNIV CALIF BERKELEY, CTR PARTICLE ASTROPHYS, BERKELEY, CA 94720 USA

Groom, DE
论文数: 0 引用数: 0
h-index: 0
机构: UNIV CALIF BERKELEY, CTR PARTICLE ASTROPHYS, BERKELEY, CA 94720 USA

Hook, IM
论文数: 0 引用数: 0
h-index: 0
机构: UNIV CALIF BERKELEY, CTR PARTICLE ASTROPHYS, BERKELEY, CA 94720 USA

Kim, AG
论文数: 0 引用数: 0
h-index: 0
机构: UNIV CALIF BERKELEY, CTR PARTICLE ASTROPHYS, BERKELEY, CA 94720 USA

Kim, MY
论文数: 0 引用数: 0
h-index: 0
机构: UNIV CALIF BERKELEY, CTR PARTICLE ASTROPHYS, BERKELEY, CA 94720 USA

Lee, JC
论文数: 0 引用数: 0
h-index: 0
机构: UNIV CALIF BERKELEY, CTR PARTICLE ASTROPHYS, BERKELEY, CA 94720 USA

Pain, R
论文数: 0 引用数: 0
h-index: 0
机构: UNIV CALIF BERKELEY, CTR PARTICLE ASTROPHYS, BERKELEY, CA 94720 USA

Pennypacker, CR
论文数: 0 引用数: 0
h-index: 0
机构: UNIV CALIF BERKELEY, CTR PARTICLE ASTROPHYS, BERKELEY, CA 94720 USA

Small, IA
论文数: 0 引用数: 0
h-index: 0
机构: UNIV CALIF BERKELEY, CTR PARTICLE ASTROPHYS, BERKELEY, CA 94720 USA

Ellis, RS
论文数: 0 引用数: 0
h-index: 0
机构: UNIV CALIF BERKELEY, CTR PARTICLE ASTROPHYS, BERKELEY, CA 94720 USA

McMahon, RG
论文数: 0 引用数: 0
h-index: 0
机构: UNIV CALIF BERKELEY, CTR PARTICLE ASTROPHYS, BERKELEY, CA 94720 USA

Boyle, BJ
论文数: 0 引用数: 0
h-index: 0
机构: UNIV CALIF BERKELEY, CTR PARTICLE ASTROPHYS, BERKELEY, CA 94720 USA

Bunclark, PS
论文数: 0 引用数: 0
h-index: 0
机构: UNIV CALIF BERKELEY, CTR PARTICLE ASTROPHYS, BERKELEY, CA 94720 USA

Carter, D
论文数: 0 引用数: 0
h-index: 0
机构: UNIV CALIF BERKELEY, CTR PARTICLE ASTROPHYS, BERKELEY, CA 94720 USA

Irwin, MJ
论文数: 0 引用数: 0
h-index: 0
机构: UNIV CALIF BERKELEY, CTR PARTICLE ASTROPHYS, BERKELEY, CA 94720 USA

Glazebrook, K
论文数: 0 引用数: 0
h-index: 0
机构: UNIV CALIF BERKELEY, CTR PARTICLE ASTROPHYS, BERKELEY, CA 94720 USA

Newberg, HJM
论文数: 0 引用数: 0
h-index: 0
机构: UNIV CALIF BERKELEY, CTR PARTICLE ASTROPHYS, BERKELEY, CA 94720 USA

Filippenko, AV
论文数: 0 引用数: 0
h-index: 0
机构: UNIV CALIF BERKELEY, CTR PARTICLE ASTROPHYS, BERKELEY, CA 94720 USA

Matheson, T
论文数: 0 引用数: 0
h-index: 0
机构: UNIV CALIF BERKELEY, CTR PARTICLE ASTROPHYS, BERKELEY, CA 94720 USA

Dopita, M
论文数: 0 引用数: 0
h-index: 0
机构: UNIV CALIF BERKELEY, CTR PARTICLE ASTROPHYS, BERKELEY, CA 94720 USA

Couch, WJ
论文数: 0 引用数: 0
h-index: 0
机构: UNIV CALIF BERKELEY, CTR PARTICLE ASTROPHYS, BERKELEY, CA 94720 USA
[28]
Discovery of a supernova explosion at half the age of the Universe
[J].
Perlmutter, S
;
Aldering, G
;
Della Valle, M
;
Deustua, S
;
Ellis, RS
;
Fabbro, S
;
Fruchter, A
;
Goldhaber, G
;
Groom, DE
;
Hook, IM
;
Kim, AG
;
Kim, MY
;
Knop, RA
;
Lidman, C
;
McMahon, RG
;
Nugent, P
;
Pain, R
;
Panagia, N
;
Pennypacker, CR
;
Ruiz-Lapuente, P
;
Schaefer, B
;
Walton, N
.
NATURE,
1998, 391 (6662)
:51-54

Perlmutter, S
论文数: 0 引用数: 0
h-index: 0
机构: Univ Calif Berkeley, Lawrence Berkeley Lab, Berkeley, CA 94720 USA

Aldering, G
论文数: 0 引用数: 0
h-index: 0
机构: Univ Calif Berkeley, Lawrence Berkeley Lab, Berkeley, CA 94720 USA

Della Valle, M
论文数: 0 引用数: 0
h-index: 0
机构: Univ Calif Berkeley, Lawrence Berkeley Lab, Berkeley, CA 94720 USA

Deustua, S
论文数: 0 引用数: 0
h-index: 0
机构: Univ Calif Berkeley, Lawrence Berkeley Lab, Berkeley, CA 94720 USA

Ellis, RS
论文数: 0 引用数: 0
h-index: 0
机构: Univ Calif Berkeley, Lawrence Berkeley Lab, Berkeley, CA 94720 USA

Fabbro, S
论文数: 0 引用数: 0
h-index: 0
机构: Univ Calif Berkeley, Lawrence Berkeley Lab, Berkeley, CA 94720 USA

Fruchter, A
论文数: 0 引用数: 0
h-index: 0
机构: Univ Calif Berkeley, Lawrence Berkeley Lab, Berkeley, CA 94720 USA

Goldhaber, G
论文数: 0 引用数: 0
h-index: 0
机构: Univ Calif Berkeley, Lawrence Berkeley Lab, Berkeley, CA 94720 USA

Groom, DE
论文数: 0 引用数: 0
h-index: 0
机构: Univ Calif Berkeley, Lawrence Berkeley Lab, Berkeley, CA 94720 USA

Hook, IM
论文数: 0 引用数: 0
h-index: 0
机构: Univ Calif Berkeley, Lawrence Berkeley Lab, Berkeley, CA 94720 USA

Kim, AG
论文数: 0 引用数: 0
h-index: 0
机构: Univ Calif Berkeley, Lawrence Berkeley Lab, Berkeley, CA 94720 USA

Kim, MY
论文数: 0 引用数: 0
h-index: 0
机构: Univ Calif Berkeley, Lawrence Berkeley Lab, Berkeley, CA 94720 USA

Knop, RA
论文数: 0 引用数: 0
h-index: 0
机构: Univ Calif Berkeley, Lawrence Berkeley Lab, Berkeley, CA 94720 USA

Lidman, C
论文数: 0 引用数: 0
h-index: 0
机构: Univ Calif Berkeley, Lawrence Berkeley Lab, Berkeley, CA 94720 USA

McMahon, RG
论文数: 0 引用数: 0
h-index: 0
机构: Univ Calif Berkeley, Lawrence Berkeley Lab, Berkeley, CA 94720 USA

Nugent, P
论文数: 0 引用数: 0
h-index: 0
机构: Univ Calif Berkeley, Lawrence Berkeley Lab, Berkeley, CA 94720 USA

Pain, R
论文数: 0 引用数: 0
h-index: 0
机构: Univ Calif Berkeley, Lawrence Berkeley Lab, Berkeley, CA 94720 USA

Panagia, N
论文数: 0 引用数: 0
h-index: 0
机构: Univ Calif Berkeley, Lawrence Berkeley Lab, Berkeley, CA 94720 USA

Pennypacker, CR
论文数: 0 引用数: 0
h-index: 0
机构: Univ Calif Berkeley, Lawrence Berkeley Lab, Berkeley, CA 94720 USA

Ruiz-Lapuente, P
论文数: 0 引用数: 0
h-index: 0
机构: Univ Calif Berkeley, Lawrence Berkeley Lab, Berkeley, CA 94720 USA

Schaefer, B
论文数: 0 引用数: 0
h-index: 0
机构: Univ Calif Berkeley, Lawrence Berkeley Lab, Berkeley, CA 94720 USA

Walton, N
论文数: 0 引用数: 0
h-index: 0
机构: Univ Calif Berkeley, Lawrence Berkeley Lab, Berkeley, CA 94720 USA
[29]
Measurements of Ω and Λ from 42 high-redshift supernovae
[J].
Perlmutter, S
;
Aldering, G
;
Goldhaber, G
;
Knop, RA
;
Nugent, P
;
Castro, PG
;
Deustua, S
;
Fabbro, S
;
Goobar, A
;
Groom, DE
;
Hook, IM
;
Kim, AG
;
Kim, MY
;
Lee, JC
;
Nunes, NJ
;
Pain, R
;
Pennypacker, CR
;
Quimby, R
;
Lidman, C
;
Ellis, RS
;
Irwin, M
;
McMahon, RG
;
Ruiz-Lapuente, P
;
Walton, N
;
Schaefer, B
;
Boyle, BJ
;
Filippenko, AV
;
Matheson, T
;
Fruchter, AS
;
Panagia, N
;
Newberg, HJM
;
Couch, WJ
.
ASTROPHYSICAL JOURNAL,
1999, 517 (02)
:565-586

Perlmutter, S
论文数: 0 引用数: 0
h-index: 0
机构: EO Lawrence Berkeley Natl Lab, Inst Nucl & Particle Astrophys, Berkeley, CA 94720 USA

Aldering, G
论文数: 0 引用数: 0
h-index: 0
机构: EO Lawrence Berkeley Natl Lab, Inst Nucl & Particle Astrophys, Berkeley, CA 94720 USA

Goldhaber, G
论文数: 0 引用数: 0
h-index: 0
机构: EO Lawrence Berkeley Natl Lab, Inst Nucl & Particle Astrophys, Berkeley, CA 94720 USA

Knop, RA
论文数: 0 引用数: 0
h-index: 0
机构: EO Lawrence Berkeley Natl Lab, Inst Nucl & Particle Astrophys, Berkeley, CA 94720 USA

Nugent, P
论文数: 0 引用数: 0
h-index: 0
机构: EO Lawrence Berkeley Natl Lab, Inst Nucl & Particle Astrophys, Berkeley, CA 94720 USA

Castro, PG
论文数: 0 引用数: 0
h-index: 0
机构: EO Lawrence Berkeley Natl Lab, Inst Nucl & Particle Astrophys, Berkeley, CA 94720 USA

Deustua, S
论文数: 0 引用数: 0
h-index: 0
机构: EO Lawrence Berkeley Natl Lab, Inst Nucl & Particle Astrophys, Berkeley, CA 94720 USA

Fabbro, S
论文数: 0 引用数: 0
h-index: 0
机构: EO Lawrence Berkeley Natl Lab, Inst Nucl & Particle Astrophys, Berkeley, CA 94720 USA

Goobar, A
论文数: 0 引用数: 0
h-index: 0
机构: EO Lawrence Berkeley Natl Lab, Inst Nucl & Particle Astrophys, Berkeley, CA 94720 USA

Groom, DE
论文数: 0 引用数: 0
h-index: 0
机构: EO Lawrence Berkeley Natl Lab, Inst Nucl & Particle Astrophys, Berkeley, CA 94720 USA

Hook, IM
论文数: 0 引用数: 0
h-index: 0
机构: EO Lawrence Berkeley Natl Lab, Inst Nucl & Particle Astrophys, Berkeley, CA 94720 USA

Kim, AG
论文数: 0 引用数: 0
h-index: 0
机构: EO Lawrence Berkeley Natl Lab, Inst Nucl & Particle Astrophys, Berkeley, CA 94720 USA

Kim, MY
论文数: 0 引用数: 0
h-index: 0
机构: EO Lawrence Berkeley Natl Lab, Inst Nucl & Particle Astrophys, Berkeley, CA 94720 USA

Lee, JC
论文数: 0 引用数: 0
h-index: 0
机构: EO Lawrence Berkeley Natl Lab, Inst Nucl & Particle Astrophys, Berkeley, CA 94720 USA

Nunes, NJ
论文数: 0 引用数: 0
h-index: 0
机构: EO Lawrence Berkeley Natl Lab, Inst Nucl & Particle Astrophys, Berkeley, CA 94720 USA

Pain, R
论文数: 0 引用数: 0
h-index: 0
机构: EO Lawrence Berkeley Natl Lab, Inst Nucl & Particle Astrophys, Berkeley, CA 94720 USA

Pennypacker, CR
论文数: 0 引用数: 0
h-index: 0
机构: EO Lawrence Berkeley Natl Lab, Inst Nucl & Particle Astrophys, Berkeley, CA 94720 USA

Quimby, R
论文数: 0 引用数: 0
h-index: 0
机构: EO Lawrence Berkeley Natl Lab, Inst Nucl & Particle Astrophys, Berkeley, CA 94720 USA

Lidman, C
论文数: 0 引用数: 0
h-index: 0
机构: EO Lawrence Berkeley Natl Lab, Inst Nucl & Particle Astrophys, Berkeley, CA 94720 USA

Ellis, RS
论文数: 0 引用数: 0
h-index: 0
机构: EO Lawrence Berkeley Natl Lab, Inst Nucl & Particle Astrophys, Berkeley, CA 94720 USA

Irwin, M
论文数: 0 引用数: 0
h-index: 0
机构: EO Lawrence Berkeley Natl Lab, Inst Nucl & Particle Astrophys, Berkeley, CA 94720 USA

McMahon, RG
论文数: 0 引用数: 0
h-index: 0
机构: EO Lawrence Berkeley Natl Lab, Inst Nucl & Particle Astrophys, Berkeley, CA 94720 USA

Ruiz-Lapuente, P
论文数: 0 引用数: 0
h-index: 0
机构: EO Lawrence Berkeley Natl Lab, Inst Nucl & Particle Astrophys, Berkeley, CA 94720 USA

Walton, N
论文数: 0 引用数: 0
h-index: 0
机构: EO Lawrence Berkeley Natl Lab, Inst Nucl & Particle Astrophys, Berkeley, CA 94720 USA

Schaefer, B
论文数: 0 引用数: 0
h-index: 0
机构: EO Lawrence Berkeley Natl Lab, Inst Nucl & Particle Astrophys, Berkeley, CA 94720 USA

Boyle, BJ
论文数: 0 引用数: 0
h-index: 0
机构: EO Lawrence Berkeley Natl Lab, Inst Nucl & Particle Astrophys, Berkeley, CA 94720 USA

Filippenko, AV
论文数: 0 引用数: 0
h-index: 0
机构: EO Lawrence Berkeley Natl Lab, Inst Nucl & Particle Astrophys, Berkeley, CA 94720 USA

Matheson, T
论文数: 0 引用数: 0
h-index: 0
机构: EO Lawrence Berkeley Natl Lab, Inst Nucl & Particle Astrophys, Berkeley, CA 94720 USA

Fruchter, AS
论文数: 0 引用数: 0
h-index: 0
机构: EO Lawrence Berkeley Natl Lab, Inst Nucl & Particle Astrophys, Berkeley, CA 94720 USA

Panagia, N
论文数: 0 引用数: 0
h-index: 0
机构: EO Lawrence Berkeley Natl Lab, Inst Nucl & Particle Astrophys, Berkeley, CA 94720 USA

Newberg, HJM
论文数: 0 引用数: 0
h-index: 0
机构: EO Lawrence Berkeley Natl Lab, Inst Nucl & Particle Astrophys, Berkeley, CA 94720 USA

Couch, WJ
论文数: 0 引用数: 0
h-index: 0
机构: EO Lawrence Berkeley Natl Lab, Inst Nucl & Particle Astrophys, Berkeley, CA 94720 USA
[30]
Observational evidence from supernovae for an accelerating universe and a cosmological constant
[J].
Riess, AG
;
Filippenko, AV
;
Challis, P
;
Clocchiatti, A
;
Diercks, A
;
Garnavich, PM
;
Gilliland, RL
;
Hogan, CJ
;
Jha, S
;
Kirshner, RP
;
Leibundgut, B
;
Phillips, MM
;
Reiss, D
;
Schmidt, BP
;
Schommer, RA
;
Smith, RC
;
Spyromilio, J
;
Stubbs, C
;
Suntzeff, NB
;
Tonry, J
.
ASTRONOMICAL JOURNAL,
1998, 116 (03)
:1009-1038

Riess, AG
论文数: 0 引用数: 0
h-index: 0
机构: Univ Calif Berkeley, Dept Astron, Berkeley, CA 94720 USA

Filippenko, AV
论文数: 0 引用数: 0
h-index: 0
机构: Univ Calif Berkeley, Dept Astron, Berkeley, CA 94720 USA

Challis, P
论文数: 0 引用数: 0
h-index: 0
机构: Univ Calif Berkeley, Dept Astron, Berkeley, CA 94720 USA

Clocchiatti, A
论文数: 0 引用数: 0
h-index: 0
机构: Univ Calif Berkeley, Dept Astron, Berkeley, CA 94720 USA

Diercks, A
论文数: 0 引用数: 0
h-index: 0
机构: Univ Calif Berkeley, Dept Astron, Berkeley, CA 94720 USA

Garnavich, PM
论文数: 0 引用数: 0
h-index: 0
机构: Univ Calif Berkeley, Dept Astron, Berkeley, CA 94720 USA

Gilliland, RL
论文数: 0 引用数: 0
h-index: 0
机构: Univ Calif Berkeley, Dept Astron, Berkeley, CA 94720 USA

Hogan, CJ
论文数: 0 引用数: 0
h-index: 0
机构: Univ Calif Berkeley, Dept Astron, Berkeley, CA 94720 USA

Jha, S
论文数: 0 引用数: 0
h-index: 0
机构: Univ Calif Berkeley, Dept Astron, Berkeley, CA 94720 USA

Kirshner, RP
论文数: 0 引用数: 0
h-index: 0
机构: Univ Calif Berkeley, Dept Astron, Berkeley, CA 94720 USA

Leibundgut, B
论文数: 0 引用数: 0
h-index: 0
机构: Univ Calif Berkeley, Dept Astron, Berkeley, CA 94720 USA

Phillips, MM
论文数: 0 引用数: 0
h-index: 0
机构: Univ Calif Berkeley, Dept Astron, Berkeley, CA 94720 USA

Reiss, D
论文数: 0 引用数: 0
h-index: 0
机构: Univ Calif Berkeley, Dept Astron, Berkeley, CA 94720 USA

Schmidt, BP
论文数: 0 引用数: 0
h-index: 0
机构: Univ Calif Berkeley, Dept Astron, Berkeley, CA 94720 USA

Schommer, RA
论文数: 0 引用数: 0
h-index: 0
机构: Univ Calif Berkeley, Dept Astron, Berkeley, CA 94720 USA

Smith, RC
论文数: 0 引用数: 0
h-index: 0
机构: Univ Calif Berkeley, Dept Astron, Berkeley, CA 94720 USA

Spyromilio, J
论文数: 0 引用数: 0
h-index: 0
机构: Univ Calif Berkeley, Dept Astron, Berkeley, CA 94720 USA

Stubbs, C
论文数: 0 引用数: 0
h-index: 0
机构: Univ Calif Berkeley, Dept Astron, Berkeley, CA 94720 USA

Suntzeff, NB
论文数: 0 引用数: 0
h-index: 0
机构: Univ Calif Berkeley, Dept Astron, Berkeley, CA 94720 USA

Tonry, J
论文数: 0 引用数: 0
h-index: 0
机构: Univ Calif Berkeley, Dept Astron, Berkeley, CA 94720 USA