Red and Reddened: Ultraviolet through Near-infrared Observations of Type Ia Supernova 2017erp
Brown, Peter J.1,2; Hosseinzadeh, Griffin3; Jha, Saurabh W.4; Sand, David5; Vieira, Ethan6; Wang, Xiaofeng7; Dai, Mi4; Dettman, Kyle G.4; Mould, Jeremy8,9; Uddin, Syed10; Wang, Lifan1,2,11; Arcavi, Iair12; Bento, Joao13; Burns, Chris R.10; Diamond, Tiara14; Hiramatsu, Daichi15,16; Howell, D. Andrew15,16; Hsiao, E. Y.17; Marion, G. H.18; McCully, Curtis15,16; Milne, Peter A.5; Mirzaqulov, Davron19; Ruiter, Ashley J.13,20; Valenti, Stefano21; Xiang, Danfeng7

We present space-based ultraviolet/optical photometry and spectroscopy with the Swift Ultra-Violet/Optical Telescope and Hubble Space Telescope (HST), respectively, along with ground-based optical photometry and spectroscopy and near-infrared spectroscopy of supernova SN 2017erp. The optical light curves and spectra are consistent with a normal SN Ia. Compared to previous photometric samples in the near-ultraviolet (NUV), SN 2017erp has UV colors that are redder than NUV-blue SNe Ia corrected to similar optical colors. The chromatic difference between SNe 2011fe and 2017erp is dominated by the intrinsic differences in the UV rather than the expected dust reddening. This chromatic difference is similar to the SALT2 color law, derived from rest-frame ultraviolet photometry of higher redshift SNe Ia. Differentiating between intrinsic UV diversity and dust reddening can have important consequences for determining cosmological distances with rest-frame ultraviolet photometry. This ultraviolet spectroscopic series is the first from HST of a normal, albeit reddened, NUV-red SN Ia and is important for analyzing SNe Ia with intrinsically redder NUV colors. We show model comparisons suggesting that metallicity could be the physical difference between NUV-blue and NUV-red SNe Ia, with emission peaks from reverse fluorescence near 3000 angstrom implying a factor of similar to 10 higher metallicity in the upper layers of SN 2017erp compared to SN 2011fe. Metallicity estimates are very model dependent, however, and there are multiple effects in the UV. Further models and UV spectra of SNe Ia are needed to explore the diversity of SNe Ia, which show seemingly independent differences in the near-UV peaks and mid-UV flux levels.

Keyworddust, extinction supernovae: general supernovae: individual (SN2017erp, SN2011fe, SN2011by)
Indexed BySCI
WOS Research AreaAstronomy & Astrophysics
WOS SubjectAstronomy & Astrophysics
WOS IDWOS:000470807700013
Citation statistics
Document Type期刊论文
Corresponding AuthorBrown, Peter J.
Affiliation1.Texas A&M Univ, Dept Phys & Astron, 4242 TAMU, College Stn, TX 77843 USA
2.Texas A&M Univ, George P & Cynthia Woods Mitchell Inst Fundamenta, College Stn, TX 77843 USA
3.Ctr Astrophys Harvard & Smithsonian, 60 Garden St, Cambridge, MA 02138 USA
4.Rutgers State Univ, Dept Phys & Astron, 136 Frelinghuysen Rd, Piscataway, NJ 08854 USA
5.Univ Arizona, Steward Observ, 933 North Cherry Ave, Tucson, AZ 85721 USA
6.Texas A&M Univ, Dept Aerosp Engn, 4242 TAMU, College Stn, TX 77843 USA
7.Tsinghua Univ, Tsinghua Ctr Astrophys, Phys Dept, Beijing 100084, Peoples R China
8.ARC Ctr Excellence All Sky Astrophys CAASTRO, Sydney, NSW, Australia
9.Swinburne Univ Technol, Ctr Astrophys & Supercomp, Melbourne, Vic, Australia
10.Observ Carnegie Inst Sci, 813 Santa Barbara St, Pasadena, CA 91101 USA
11.Chinese Acad Sci, Purple Mt Observ, Nanjing, Jiangsu, Peoples R China
12.Tel Aviv Univ, Sch Phys & Astron, IL-69978 Tel Aviv, Israel
13.Australian Natl Univ, Res Sch Astron & Astrophys, Mt Stromlo Observ, Cotter Rd, Creek, ACT 2611, Australia
14.Goddard Space Flight Ctr, 8800 Greenbelt Rd, Greenbelt, MD 20771 USA
15.Las Cumbres Observ, 6740 Cortona Dr,Suite 102, Goleta, CA 93117 USA
16.Univ Calif Santa Barbara, Dept Phys, Santa Barbara, CA USA
17.Florida State Univ, Dept Phys, Tallahassee, FL 32306 USA
18.Univ Texas Austin, 1 Univ Stn C1400, Austin, TX 78712 USA
19.Uzbek Acad Sci, Ulugh Beg Astron Inst, Tashkent 100052, Uzbekistan
20.Univ New South Wales, Australian Def Force Acad, Sch Sci, Canberra, ACT 2600, Australia
21.Univ Calif Davis, Dept Phys, 1 Shields Ave, Davis, CA 95616 USA
Recommended Citation
GB/T 7714
Brown, Peter J.,Hosseinzadeh, Griffin,Jha, Saurabh W.,et al. Red and Reddened: Ultraviolet through Near-infrared Observations of Type Ia Supernova 2017erp[J]. ASTROPHYSICAL JOURNAL,2019,877(2):13.
APA Brown, Peter J..,Hosseinzadeh, Griffin.,Jha, Saurabh W..,Sand, David.,Vieira, Ethan.,...&Xiang, Danfeng.(2019).Red and Reddened: Ultraviolet through Near-infrared Observations of Type Ia Supernova 2017erp.ASTROPHYSICAL JOURNAL,877(2),13.
MLA Brown, Peter J.,et al."Red and Reddened: Ultraviolet through Near-infrared Observations of Type Ia Supernova 2017erp".ASTROPHYSICAL JOURNAL 877.2(2019):13.
Files in This Item:
File Name/Size DocType Version Access License
2019-069.pdf(3560KB)期刊论文作者接受稿限制开放CC BY-NC-SAView Application Full Text
Related Services
Recommend this item
Usage statistics
Export to Endnote
Google Scholar
Similar articles in Google Scholar
[Brown, Peter J.]'s Articles
[Hosseinzadeh, Griffin]'s Articles
[Jha, Saurabh W.]'s Articles
Baidu academic
Similar articles in Baidu academic
[Brown, Peter J.]'s Articles
[Hosseinzadeh, Griffin]'s Articles
[Jha, Saurabh W.]'s Articles
Bing Scholar
Similar articles in Bing Scholar
[Brown, Peter J.]'s Articles
[Hosseinzadeh, Griffin]'s Articles
[Jha, Saurabh W.]'s Articles
Terms of Use
No data!
Social Bookmark/Share
File name: 2019-069.pdf
Format: Adobe PDF
All comments (0)
No comment.

Items in the repository are protected by copyright, with all rights reserved, unless otherwise indicated.